A Pharmacokinetics Study of MK-7655A in Pediatric Participants With Gram-negative Infections (MK-7655A-020)

Sponsor
Merck Sharp & Dohme LLC (Industry)
Overall Status
Completed
CT.gov ID
NCT03230916
Collaborator
(none)
47
33
1
33.1
1.4
0

Study Details

Study Description

Brief Summary

This study aims to obtain plasma pharmacokinetic (PK) data and characterize the PK profile of imipenem (IMI), cilastatin (CIL), and relebactam (REL) following administration of a single intravenous (IV) dose of MK-7655A (a fixed ratio combination of imipenem/cilastatin/relebactam), hereafter referred to as IMI/REL.

Condition or Disease Intervention/Treatment Phase
  • Drug: IMI/REL FDC
Phase 1

Study Design

Study Type:
Interventional
Actual Enrollment :
47 participants
Allocation:
N/A
Intervention Model:
Single Group Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
A Phase 1b, Open-label, Single-dose Study to Evaluate the Pharmacokinetics, Safety, and Tolerability of MK-7655A in Pediatric Subjects From Birth to Less Than 18 Years of Age With Confirmed or Suspected Gram-negative Infections
Actual Study Start Date :
Nov 6, 2017
Actual Primary Completion Date :
Jul 28, 2020
Actual Study Completion Date :
Aug 11, 2020

Arms and Interventions

Arm Intervention/Treatment
Experimental: IMI/REL FDC

Imipenem/Cilastatin/Relebactam (IMI/REL) administered as a single fixed 2:1 ratio of imipenem/cilastatin to relebactam, with a maximum dose of 15 mg/kg IMI and 15 mg/kg CIL (up to 500 mg IMI and 500 mg CIL) and 7.5 mg/kg REL (up to 250 mg REL).

Drug: IMI/REL FDC
IMI/REL is supplied as a single fixed dose combination (FDC) vial; which is administered at a maximum dose of 15 mg/kg IMI and 15 mg/kg CIL (up to 500 mg IMI and 500 mg CIL) and 7.5 mg/kg REL (up to 250 mg REL).
Other Names:
  • MK-7655A
  • Outcome Measures

    Primary Outcome Measures

    1. Imipenem (IMI) Area Under the Concentration Time Curve From Time 0 to Infinity (AUC0-∞) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Area under the concentration time curve from time 0 to infinity (AUC0-∞) of plasma imipenem (IMI) was calculated. AUC0-∞ is the area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time.

    2. IMI Maximum Concentration (Cmax) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Maximum plasma concentration (Cmax) of IMI was calculated. Cmax is the peak plasma concentration of study drug after administration.

    3. IMI Central Volume of Distribution (Vc) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Central volume of distribution (Vc) of plasma IMI was calculated.

    4. IMI Clearance (CL) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Systemic clearance (CL) of plasma IMI was calculated.

    5. IMI Percentage of Time Above the Minimum Concentration (%TMIC) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Percentage of time spent above the minimum inhibitory concentration (%TMIC) of plasma IMI was calculated. %TMIC is defined as the percentage of time (in hours) in which the lowest concentration of a study drug, completely inhibits growth of the specific organism being tested.

    6. Relebactam (REL) AUC0-∞ [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Area under the concentration time curve from time 0 to infinity (AUC0-∞) of plasma relebactam (REL) was calculated. AUC0-∞ is the area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time.

    7. REL Maximum Concentration (Cmax) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Maximum plasma concentration (Cmax) of REL was calculated. Cmax is the peak plasma concentration of study drug after administration.

    8. REL Clearance (CL) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Systemic clearance (CL) of plasma REL was calculated.

    9. REL Central Volume of Distribution (Vc) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Central volume of distribution (Vc) of plasma REL was calculated.

    10. Cilastatin (CIL) AUC0-∞ [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Area under the concentration time curve from time 0 to infinity (AUC0-∞) of plasma cilastatin (CIL) was not calculated. AUC0-∞ is the area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time.

    11. CIL Time to Maximum Concentration (Tmax) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Time to maximum plasma concentration (Tmax) of CIL was determined. Tmax is defined as the time after drug administration at which peak drug concentration in plasma occurs.

    12. CIL Concentration at End of Infusion (Ceoi) [30 min after the start of infusion for Cohort 1; 60 min after the start of infusion for Cohorts 2-5]

      Concentration at end of infusion (Ceoi) of plasma CIL was determined.

    13. CIL Terminal Half-Life (t1/2) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Terminal half-life (t1/2) of plasma CIL was not calculated.

    14. CIL Clearance (CL) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5]

      Systemic clearance (CL) of plasma CIL was not calculated.

    15. CIL Volume of Distribution (Vss) [30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to12 hrs after start of DI for Cohort 5]

      Volume of distribution (Vss) of plasma CIL was not calculated.

    Secondary Outcome Measures

    1. Number of Participants Who Experienced an Adverse Event (AE) [Up to 17 days]

      Number of participants with one or more AEs was calculated. An AE is defined as any untoward medical occurrence in a participant administered study drug and which may or may not have a causal relationship to the study drug.

    2. Number of Participants Who Discontinued Study Drug Due to an AE [Day 1]

      Number of participants who discontinued study drug due to an AE was calculated. An AE is defined as any untoward medical occurrence in a participant administered study drug and which may or may not have a causal relationship to the study drug.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    1 Day to 17 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Has a parent or legally acceptable representative (LAR) who provides written informed consent for the trial on the participant's behalf.

    • Aged from birth to <18 years old.

    • Is hospitalized, currently receiving antibacterial treatment for confirmed or suspected Gram-negative bacterial infection, and expected to require hospitalization until at least 24 hours after completion of study drug administration.

    • Is not of reproductive potential; but if of reproductive potential, agrees to avoid becoming pregnant or impregnating a partner from the time of consent through 24 hours after completion of study drug administration.

    • Has clinically stable renal function at the time of screening that is judged to be within acceptable ranges.

    • Has sufficient intravascular access to receive study drug through an existing peripheral or central line.

    Exclusion Criteria:
    • Has a personal history of hypersensitivity to imipenem/cilastatin (IMI) or to any of the following: any carbapenem, cephalosporin, penicillin, or other β-lactam agent; or other β-lactamase inhibitors (BLIs) e.g. tazobactam, sulbactam, clavulanic acid, avibactam.

    • Female is currently pregnant or breast feeding or has a positive serum β-human chorionic gonadotropin (β-hCG) pregnancy test.

    • Has a history of a seizure disorder requiring ongoing treatment with anti-convulsive therapy or prior treatment with anti-convulsive therapy within the last 3 years.

    • Has used or plans to use valproic acid or divalproex sodium within 2 weeks prior to screening or at any point between screening and 24 hours after the completion of study drug infusion.

    • Has received treatment or plans to receive treatment with any carbapenem antibiotic within 48 hours prior to initiation of study drug infusion or at any point between administration of study drug and the last PK sample collection.

    • Has used or plans to use any of the following medications, which are organic anion transporter (OAT) 1 or OAT3 inhibitors, within 1 week prior to screening or at any point between screening and the last PK sample collection: cimetidine, probenecid, indomethacin, mefenamic acid, furosemide or other loop diuretics (eg, bumetanide, torsemide, ethacrynic acid), angiotensin receptor blockers (eg, valsartan), and ketorolac.

    • Is currently participating in or has participated in an interventional clinical trial with an investigational compound or device within 30 days prior to screening.

    • Has enrolled previously in the current trial and been discontinued, or has received REL for any other reason.

    • Has a current diagnosis of cystic fibrosis, meningitis, or severe sepsis.

    • Is expected to survive less than 72 hours after completion of study drug administration.

    • Has a history of clinically significant renal, hepatic, or hemodynamic instability.

    • Plans to use cardiopulmonary bypass, extracorporeal membrane oxygenation, hemodialysis, or peritoneal dialysis during the study.

    • For participants that are 2 to 17 years of age only: weighs outside of the 5th to 95th percentile based on age.

    • Is, at the time of signing informed consent, a user of recreational or illicit drugs or has had a recent history (within the last year) of drug or alcohol abuse or dependence.

    • Has a planned blood transfusion within 24 hours of study drug administration or expected before the end of the PK sampling.

    • Has had significant blood loss (≥5% of total blood volume) within 4 weeks before the screening visit.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Arkansas Children's Hospital ( Site 1311) Little Rock Arkansas United States 72202
    2 Children's Hospital of Orange County ( Site 1301) Orange California United States 92868
    3 Rady Children's Hospital-San Diego ( Site 1305) San Diego California United States 92123
    4 Our Lady of the Lake Hospital ( Site 1304) Baton Rouge Louisiana United States 70808
    5 St. Louis Children's Hospital ( Site 1322) Saint Louis Missouri United States 63110
    6 Duke University Medical Center ( Site 1317) Durham North Carolina United States 27710
    7 The Children's Hospital of Philadelphia ( Site 1318) Philadelphia Pennsylvania United States 19104
    8 Seattle Childrens Hospital ( Site 1321) Seattle Washington United States 98105
    9 MHAT Pazardjik AD ( Site 0208) Pazardjik Pazardzhik Bulgaria 4400
    10 UMHAT Deva Maria. EOOD ( Site 0209) Burgas Bulgaria 8127
    11 UMHAT Dr. Georgi Stranski EAD ( Site 0211) Pleven Bulgaria 5800
    12 UMHAT Kanev AD ( Site 0203) Ruse Bulgaria 7002
    13 UMHAT Kanev AD ( Site 0212) Ruse Bulgaria 7002
    14 Hospital Pablo Tobon Uribe ( Site 0301) Medellin Antioquia Colombia 050034
    15 Hospital General de Medellin Luz Castro de Gutierrez ( Site 0303) Medellin Antioquia Colombia 500515
    16 Fundacion Valle del Lili ( Site 0300) Cali Valle Del Cauca Colombia 760032
    17 General Hospital of Thessaloniki Hippokrateio ( Site 1402) Thessaloniki Greece 546 42
    18 Akershus Universitetssykehus HF ( Site 0903) Loerenskog Akershus Norway 1478
    19 Stavanger Universitetssykehus, Helse Stavanger ( Site 0901) Stavanger Rogaland Norway 4011
    20 St. Olavs Hospital ( Site 0900) Trondheim Sor-Trondelag Norway 7006
    21 Haukeland Universitetssjukehus ( Site 0902) Bergen Vestfold Norway 5021
    22 Wojewodzki Specjalistyczny Szpital im. Bieganskiego w Lodzi ( Site 1000) Lodz Lodzkie Poland 91-347
    23 SPZOZ im. Dzieci Warszawy w Dziekanowie Lesnym ( Site 1002) Lomianki Mazowieckie Poland 05-092
    24 SI Dnipropetrovsk Regional Children Clinical Hospital DOR ( Site 1214) Dnipro Dnipropetrovska Oblast Ukraine 49100
    25 Kharkiv City Children Hospital 16 ( Site 1200) Kharkiv Kharkivska Oblast Ukraine 61075
    26 Institution of Pediatr Obstetr and Gynec NAMS of Ukraine ( Site 1213) Kyiv Kyivska Oblast Ukraine 04050
    27 Odessa Regional Children Clinical Hospital ( Site 1203) Odesa Odeska Oblast Ukraine 65031
    28 Children City Clinical Hospital ( Site 1215) Poltava Poltavska Oblast Ukraine 36004
    29 Zaporizhzhya Regional Clinical Childrens Hospital ( Site 1202) Zaporizhzhya Zaporizka Oblast Ukraine 69063
    30 Bristol Royal Hospital for Children ( Site 1101) Bristol Bristol, City Of United Kingdom BS2 8AF
    31 University Hospital Southampton NHS Foundation Trust ( Site 1100) Southampton Hampshire United Kingdom SO16 6YD
    32 St. Georges University Hospital NHS Foundation Trust ( Site 1103) London London, City Of United Kingdom SW17 0QT
    33 Great Northern Children s Hospital ( Site 1102) Newcastle Newcastle Upon Tyne United Kingdom NE1 4LP

    Sponsors and Collaborators

    • Merck Sharp & Dohme LLC

    Investigators

    • Study Director: Medical Director, Merck Sharp & Dohme LLC

    Study Documents (Full-Text)

    More Information

    Publications

    None provided.
    Responsible Party:
    Merck Sharp & Dohme LLC
    ClinicalTrials.gov Identifier:
    NCT03230916
    Other Study ID Numbers:
    • 7655A-020
    • 2016-004328-43
    • MK-7665A-020
    First Posted:
    Jul 27, 2017
    Last Update Posted:
    Dec 13, 2021
    Last Verified:
    Oct 1, 2021
    Individual Participant Data (IPD) Sharing Statement:
    Yes
    Plan to Share IPD:
    Yes
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Studies a U.S. FDA-regulated Device Product:
    No
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details
    Pre-assignment Detail Note: Participant information is shown by age cohort and drug dosage to provide clinically-similar groups for analysis of participant baseline characteristics and safety data. Participant information in pharmacokinetic (PK) outcome measures is shown by age cohort, drug dose received and infusion time in order to provide appropriate and clinically discrete groups for PK analysis and modeling.
    Arm/Group Title Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single intravenous (IV) 30-minute infusion dose of imipenem/cilastatin/relebactam (IMI/REL) at 15/7.5 mg/kg, up to maximum dose of 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to a maximum dose of 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to <2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute dose of IMI/REL at 10/5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Period Title: Overall Study
    STARTED 7 6 6 4 4 6 3 2 2 3 4
    Treated 7 6 6 4 4 5 3 2 2 3 4
    COMPLETED 7 6 6 4 4 5 3 2 2 3 4
    NOT COMPLETED 0 0 0 0 0 1 0 0 0 0 0

    Baseline Characteristics

    Arm/Group Title Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg Total
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single intravenous (IV) 30-minute infusion dose of imipenem/cilastatin/relebactam (IMI/REL) at 15/7.5 mg/kg, up to maximum dose of 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to a maximum dose of 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to <2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute dose of IMI/REL at 10/5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Total of all reporting groups
    Overall Participants 7 6 6 4 4 6 3 2 2 3 4 47
    Age, Customized (Count of Participants)
    In utero
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    Preterm newborn infants (gestational age < 37 wks)
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    Newborns (0-27 days)
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    3
    100%
    2
    100%
    0
    0%
    3
    100%
    4
    100%
    12
    25.5%
    Infants and toddlers (28 days-23 months)
    0
    0%
    0
    0%
    0
    0%
    4
    100%
    4
    100%
    6
    100%
    0
    0%
    0
    0%
    2
    100%
    0
    0%
    0
    0%
    16
    34%
    Children (2-11 years)
    0
    0%
    6
    100%
    6
    100%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    12
    25.5%
    Adolescents (12-17 years)
    7
    100%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    7
    14.9%
    Adults (18-64 years)
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    From 65-84 years
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    85 years and over
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    Sex: Female, Male (Count of Participants)
    Female
    5
    71.4%
    5
    83.3%
    4
    66.7%
    4
    100%
    2
    50%
    2
    33.3%
    1
    33.3%
    1
    50%
    2
    100%
    1
    33.3%
    1
    25%
    28
    59.6%
    Male
    2
    28.6%
    1
    16.7%
    2
    33.3%
    0
    0%
    2
    50%
    4
    66.7%
    2
    66.7%
    1
    50%
    0
    0%
    2
    66.7%
    3
    75%
    19
    40.4%
    Ethnicity (NIH/OMB) (Count of Participants)
    Hispanic or Latino
    0
    0%
    0
    0%
    2
    33.3%
    1
    25%
    2
    50%
    1
    16.7%
    1
    33.3%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    7
    14.9%
    Not Hispanic or Latino
    7
    100%
    6
    100%
    4
    66.7%
    3
    75%
    2
    50%
    5
    83.3%
    1
    33.3%
    2
    100%
    2
    100%
    3
    100%
    4
    100%
    39
    83%
    Unknown or Not Reported
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    1
    33.3%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    1
    2.1%
    Race (NIH/OMB) (Count of Participants)
    American Indian or Alaska Native
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    Asian
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    1
    25%
    1
    2.1%
    Native Hawaiian or Other Pacific Islander
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    Black or African American
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    1
    25%
    1
    16.7%
    2
    66.7%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    4
    8.5%
    White
    7
    100%
    6
    100%
    4
    66.7%
    3
    75%
    2
    50%
    5
    83.3%
    0
    0%
    2
    100%
    2
    100%
    3
    100%
    3
    75%
    37
    78.7%
    More than one race
    0
    0%
    0
    0%
    1
    16.7%
    1
    25%
    1
    25%
    0
    0%
    1
    33.3%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    4
    8.5%
    Unknown or Not Reported
    0
    0%
    0
    0%
    1
    16.7%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    1
    2.1%

    Outcome Measures

    1. Primary Outcome
    Title Imipenem (IMI) Area Under the Concentration Time Curve From Time 0 to Infinity (AUC0-∞)
    Description Area under the concentration time curve from time 0 to infinity (AUC0-∞) of plasma imipenem (IMI) was calculated. AUC0-∞ is the area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose pharmacokinetic (PK) data point available for IMI AUC0-∞
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [μM*hr]
    134.7
    (19.8)
    153.2
    (NA)
    219.4
    (39.2)
    139.4
    (26.6)
    140
    (NA)
    156
    (18.9)
    163
    (31.2)
    95.4
    (39.3)
    219.2
    (39.6)
    152.5
    (14.1)
    271.3
    (15.4)
    2. Primary Outcome
    Title IMI Maximum Concentration (Cmax)
    Description Maximum plasma concentration (Cmax) of IMI was calculated. Cmax is the peak plasma concentration of study drug after administration.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose pharmacokinetic (PK) data point available for IMI Cmax
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [μM]
    107.6
    (16.4)
    126.0
    (NA)
    123.0
    (20.6)
    114.2
    (9.2)
    110.6
    (NA)
    150.3
    (6.7)
    125.1
    (25.2)
    64.9
    (29.6)
    127.7
    (36.0)
    79.4
    (26.4)
    119.8
    (16.8)
    3. Primary Outcome
    Title IMI Central Volume of Distribution (Vc)
    Description Central volume of distribution (Vc) of plasma IMI was calculated.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for IMI Vc
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to Infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [Liters]
    10.27
    (16.2)
    8.00
    (NA)
    4.33
    (5.2)
    9.60
    (2.4)
    8.70
    (NA)
    3.49
    (19.6)
    2.49
    (34.6)
    2.39
    (53.2)
    1.52
    (35.0)
    1.06
    (29.6)
    0.95
    (34.2)
    4. Primary Outcome
    Title IMI Clearance (CL)
    Description Systemic clearance (CL) of plasma IMI was calculated.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for IMI CL
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [L/hr]
    12.58
    (18.4)
    9.60
    (NA)
    5.25
    (9.2)
    11.67
    (27.6)
    11.74
    (NA)
    5.31
    (29.7)
    4.43
    (45.2)
    3.31
    (60.1)
    1.70
    (48.1)
    1.10
    (26.2)
    0.66
    (20.4)
    5. Primary Outcome
    Title IMI Percentage of Time Above the Minimum Concentration (%TMIC)
    Description Percentage of time spent above the minimum inhibitory concentration (%TMIC) of plasma IMI was calculated. %TMIC is defined as the percentage of time (in hours) in which the lowest concentration of a study drug, completely inhibits growth of the specific organism being tested.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for IMI %TMIC
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [Percentage of time]
    56.5
    (17.1)
    58.3
    (NA)
    80.3
    (26.7)
    61.6
    (25.1)
    56.7
    (NA)
    50.1
    (15.7)
    57.7
    (18.8)
    50.4
    (30.5)
    73.9
    (19.7)
    70.2
    (10.6)
    93.7
    (9.3)
    6. Primary Outcome
    Title Relebactam (REL) AUC0-∞
    Description Area under the concentration time curve from time 0 to infinity (AUC0-∞) of plasma relebactam (REL) was calculated. AUC0-∞ is the area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for REL AUC0-∞
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [μM*hr]
    80.1
    (20.0)
    105.6
    (NA)
    123.8
    (59.5)
    90.3
    (35.1)
    80.2
    (NA)
    85.7
    (32.4)
    81.7
    (42.0)
    52.8
    (33.6)
    126.6
    (53.7)
    91.8
    (18.3)
    220.7
    (34.1)
    7. Primary Outcome
    Title REL Maximum Concentration (Cmax)
    Description Maximum plasma concentration (Cmax) of REL was calculated. Cmax is the peak plasma concentration of study drug after administration.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for REL Cmax
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [μM]
    49.33
    (23.0)
    86.52
    (NA)
    60.32
    (30.7)
    57.44
    (26.1)
    48.73
    (NA)
    59.05
    (9.08)
    48.59
    (22.9)
    32.74
    (15.0)
    59.55
    (17.1)
    34.22
    (17.3)
    61.04
    (21.9)
    8. Primary Outcome
    Title REL Clearance (CL)
    Description Systemic clearance (CL) of plasma REL was calculated.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for REL CL
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [L/hr]
    8.98
    (20.7)
    6.10
    (NA)
    3.96
    (28.9)
    8.03
    (35.7)
    8.65
    (NA)
    4.20
    (40.8)
    3.65
    (54.1)
    2.56
    (54.5)
    1.27
    (62.9)
    0.74
    (27.0)
    0.35
    (30.7)
    9. Primary Outcome
    Title REL Central Volume of Distribution (Vc)
    Description Central volume of distribution (Vc) of plasma REL was calculated.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for REL Vc
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 10/5 mg/kg 60-minute Infusion Cohort 5: IMI/REL 15/7.5 mg/kg 60-minute Infusion
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 6 9
    Geometric Mean (Geometric Coefficient of Variation) [Liters]
    10.58
    (17.2)
    6.76
    (NA)
    4.95
    (1.6)
    9.81
    (6.1)
    9.38
    (NA)
    3.83
    (13.8)
    2.88
    (27.4)
    2.43
    (38.8)
    1.70
    (21.1)
    1.21
    (24.6)
    0.90
    (36.7)
    10. Primary Outcome
    Title Cilastatin (CIL) AUC0-∞
    Description Area under the concentration time curve from time 0 to infinity (AUC0-∞) of plasma cilastatin (CIL) was not calculated. AUC0-∞ is the area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    Due to sparse PK sampling schedule, per participant data could not be calculated.
    Arm/Group Title Cohort 1: IMI/REL 500-250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: IMI/REL 10/5 mg/kg Cohort 5: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Cohort 1: IMI/REL 500/250 mg 30-minute infusion Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 0 0 0 0 0 0 0 0 0 0 0
    11. Primary Outcome
    Title CIL Time to Maximum Concentration (Tmax)
    Description Time to maximum plasma concentration (Tmax) of CIL was determined. Tmax is defined as the time after drug administration at which peak drug concentration in plasma occurs.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for CIL Tmax
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: IMI/REL 10/5 mg/kg Cohort 5: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 4 4 7 9
    Median (Full Range) [Hours]
    0.58
    0.53
    1.1
    0.58
    1.1
    0.58
    1.1
    1.1
    1.2
    1.1
    1.2
    12. Primary Outcome
    Title CIL Concentration at End of Infusion (Ceoi)
    Description Concentration at end of infusion (Ceoi) of plasma CIL was determined.
    Time Frame 30 min after the start of infusion for Cohort 1; 60 min after the start of infusion for Cohorts 2-5

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who were compliant with the protocol and had at least 1 post-dose PK data point available for CIL Ceoi
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: IMI/REL 10/5 mg/kg Cohort 5: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 6 1 2 2 1 3 3 3 4 7 9
    Geometric Mean (Geometric Coefficient of Variation) [μM]
    86.9
    (41.0)
    122
    (NA)
    111
    (51)
    80.5
    (22)
    74.8
    (NA)
    102
    (32)
    80.9
    (62)
    37.0
    (64.0)
    94.5
    (42.0)
    63.6
    (28.0)
    107.0
    (20.0)
    13. Primary Outcome
    Title CIL Terminal Half-Life (t1/2)
    Description Terminal half-life (t1/2) of plasma CIL was not calculated.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    Due to sparse PK sampling schedule, per participant data could not be calculated.
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: IMI/REL 10/5 mg/kg Cohort 5: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 0 0 0 0 0 0 0 0 0 0 0
    14. Primary Outcome
    Title CIL Clearance (CL)
    Description Systemic clearance (CL) of plasma CIL was not calculated.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to 12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    Due to sparse PK sampling schedule, per participant data could not be calculated.
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: IMI/REL 10/5 mg/kg Cohort 5: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 0 0 0 0 0 0 0 0 0 0 0
    15. Primary Outcome
    Title CIL Volume of Distribution (Vss)
    Description Volume of distribution (Vss) of plasma CIL was not calculated.
    Time Frame 30 minutes (min) before start of drug infusion (DI) and 10 min after the end of DI for all cohorts; 1.5 to 2.5 hours (hrs) and 4.5 to 6 hrs after start of DI for Cohorts 1-4; 2 to 5 hrs and 6 to12 hrs after start of DI for Cohort 5

    Outcome Measure Data

    Analysis Population Description
    Due to sparse PK sampling schedule, per participant data could not be calculated.
    Arm/Group Title Cohort 1: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 2: IMI/REL 15/7.5 mg/kg mg 60-minute Infusion Cohort 2: IMI/REL 500/250 mg 30-minute Infusion Cohort 2: IMI/REL 500/250 mg 60-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 30-minute Infusion Cohort 3: IMI/REL 15/7.5 mg/kg 60-minute Infusion Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: IMI/REL 10/5 mg/kg Cohort 5: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older children (6 to <12 years) administered with a single IV 30-minute infusion dose of IMI/REL at 500/250 mg Older children (6 to <12 years) administered with a single IV 60-minute infusion dose of IMI/REL at 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger children (2 to <6 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to 2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Neonates to infants (birth to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 0 0 0 0 0 0 0 0 0 0 0
    16. Secondary Outcome
    Title Number of Participants Who Experienced an Adverse Event (AE)
    Description Number of participants with one or more AEs was calculated. An AE is defined as any untoward medical occurrence in a participant administered study drug and which may or may not have a causal relationship to the study drug.
    Time Frame Up to 17 days

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who received infusion (including partial doses) of study drug
    Arm/Group Title Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to maximum dose of 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to maximum dose of 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to <2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute dose of IMI/REL at 10/5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 7 6 6 4 4 5 3 2 2 3 4
    Count of Participants [Participants]
    1
    14.3%
    0
    0%
    3
    50%
    1
    25%
    2
    50%
    1
    16.7%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    17. Secondary Outcome
    Title Number of Participants Who Discontinued Study Drug Due to an AE
    Description Number of participants who discontinued study drug due to an AE was calculated. An AE is defined as any untoward medical occurrence in a participant administered study drug and which may or may not have a causal relationship to the study drug.
    Time Frame Day 1

    Outcome Measure Data

    Analysis Population Description
    All allocated participants who received infusion (including partial doses) of study drug
    Arm/Group Title Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to maximum dose of 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to maximum dose of 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to <2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute dose of IMI/REL at 10/5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    Measure Participants 7 6 6 4 4 5 3 2 2 3 4
    Count of Participants [Participants]
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%

    Adverse Events

    Time Frame Up to 17 days (AE reporting), up to 19 days (all-cause mortality)
    Adverse Event Reporting Description The analysis population included all allocated participants who received infusion (including partial doses) of study drug. Note: Participant information is shown by age cohort and drug dosage, to provide clinically-similar groups for analysis of safety data.
    Arm/Group Title Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg
    Arm/Group Description Adolescents (age 12 to <18 years) administered with a single IV 30-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to maximum dose of 500/250 mg Older children (6 to <12 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg, up to a maximum dose of 500/250 mg Younger children (2 to <6 years) administered with a single IV 30-minute or 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Infants (3 months to <1 year) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Toddlers (1 to <2 years) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute dose of IMI/REL at 10/5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 10/5 mg/kg Young infants (4 weeks to <3 months of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Older neonates (1 to <4 weeks of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg Younger neonates (<1 week of age) administered with a single IV 60-minute infusion dose of IMI/REL at 15/7.5 mg/kg
    All Cause Mortality
    Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/7 (0%) 0/6 (0%) 0/6 (0%) 0/4 (0%) 0/4 (0%) 0/5 (0%) 0/3 (0%) 0/2 (0%) 0/2 (0%) 0/3 (0%) 0/4 (0%)
    Serious Adverse Events
    Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/7 (0%) 0/6 (0%) 0/6 (0%) 0/4 (0%) 0/4 (0%) 0/5 (0%) 0/3 (0%) 0/2 (0%) 0/2 (0%) 0/3 (0%) 0/4 (0%)
    Other (Not Including Serious) Adverse Events
    Cohort 1: IMI/REL 15/7.5 mg/kg Cohort 2: IMI/REL 15/7.5 mg/kg Cohort 3: IMI/REL 15/7.5 mg/kg Cohort 4: IMI/REL 10/5 mg/kg Cohort 4: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 1: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 2: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 3: IMI/REL 10/5 mg/kg Cohort 5: Subcohort 1: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 2: IMI/REL 15/7.5 mg/kg Cohort 5: Subcohort 3: IMI/REL 15/7.5 mg/kg
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 1/7 (14.3%) 0/6 (0%) 3/6 (50%) 1/4 (25%) 2/4 (50%) 1/5 (20%) 0/3 (0%) 0/2 (0%) 0/2 (0%) 0/3 (0%) 0/4 (0%)
    Blood and lymphatic system disorders
    Anaemia 1/7 (14.3%) 1 0/6 (0%) 0 2/6 (33.3%) 2 0/4 (0%) 0 0/4 (0%) 0 0/5 (0%) 0 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0
    Thrombocytoses 0/7 (0%) 0 0/6 (0%) 0 1/6 (16.7%) 1 0/4 (0%) 0 0/4 (0%) 0 0/5 (0%) 0 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0
    Gastrointestinal disorders
    Diarrhoea 0/7 (0%) 0 0/6 (0%) 0 1/6 (16.7%) 1 1/4 (25%) 1 0/4 (0%) 0 1/5 (20%) 1 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0
    Infections and infestations
    Nasopharyngitis 0/7 (0%) 0 0/6 (0%) 0 0/6 (0%) 0 0/4 (0%) 0 0/4 (0%) 0 1/5 (20%) 1 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0
    Investigations
    Aspartate aminotransferase increased 1/7 (14.3%) 1 0/6 (0%) 0 0/6 (0%) 0 0/4 (0%) 0 0/4 (0%) 0 0/5 (0%) 0 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0
    Alanine aminotransferase increased 1/7 (14.3%) 1 0/6 (0%) 0 0/6 (0%) 0 0/4 (0%) 0 0/4 (0%) 0 0/5 (0%) 0 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0
    Neutrophil count decreased 0/7 (0%) 0 0/6 (0%) 0 0/6 (0%) 0 0/4 (0%) 0 1/4 (25%) 1 0/5 (0%) 0 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0
    Skin and subcutaneous tissue disorders
    Miliaria 0/7 (0%) 0 0/6 (0%) 0 0/6 (0%) 0 0/4 (0%) 0 1/4 (25%) 1 0/5 (0%) 0 0/3 (0%) 0 0/2 (0%) 0 0/2 (0%) 0 0/3 (0%) 0 0/4 (0%) 0

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    The Sponsor must have the opportunity to review all proposed abstracts, manuscripts or presentations regarding this trial 45 days prior to submission for publication/presentation. Any information identified by the Sponsor as confidential must be deleted prior to submission; this confidentiality does not include efficacy and safety results. Sponsor review can be expedited to meet publication timelines.

    Results Point of Contact

    Name/Title Clinical Trials Disclosure
    Organization Merck Sharp & Dohme Corp.
    Phone 1-800-672-6372
    Email ClinicalTrialsDisclosure@merck.com
    Responsible Party:
    Merck Sharp & Dohme LLC
    ClinicalTrials.gov Identifier:
    NCT03230916
    Other Study ID Numbers:
    • 7655A-020
    • 2016-004328-43
    • MK-7665A-020
    First Posted:
    Jul 27, 2017
    Last Update Posted:
    Dec 13, 2021
    Last Verified:
    Oct 1, 2021