Omadacycline Versus Linezolid for the Treatment of ABSSSI (EudraCT #2013-003644-23)

Sponsor
Paratek Pharmaceuticals Inc (Industry)
Overall Status
Completed
CT.gov ID
NCT02378480
Collaborator
(none)
655
78
2
11
8.4
0.8

Study Details

Study Description

Brief Summary

The purpose of this study is to evaluate the safety and efficacy of omadacycline as compared to linezolid in the treatment of adults with acute bacterial skin and skin structure infections.

Study Design

Study Type:
Interventional
Actual Enrollment :
655 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose:
Treatment
Official Title:
A Phase 3 Randomized, Double-blind, Multi-center Study to Compare the Safety and Efficacy of Omadacycline IV/PO to Linezolid IV/PO for Treating Adults With Acute Bacterial Skin and Skin Structure Infections (ABSSSI)
Study Start Date :
Jun 1, 2015
Actual Primary Completion Date :
Apr 1, 2016
Actual Study Completion Date :
May 1, 2016

Arms and Interventions

Arm Intervention/Treatment
Experimental: Omadacycline

Omadacycline IV; Omadacycline tablets

Drug: Omadacycline
Injection for IV dosing; Tablets for oral dosing

Active Comparator: Linezolid

Linezolid IV; Linezolid tablets

Drug: Linezolid
Infusion solution for IV dosing; Tablets for oral dosing
Other Names:
  • Zyvox
  • Outcome Measures

    Primary Outcome Measures

    1. Number of Participants With Early Clinical Response [Screening; 48 to 72 hours after the first dose of test article]

      Early clinical response is defined as clinical success, which is categorized as survival with at least a 20% reduction of acute bacterial skin and skin structure infection (ABSSSI) primary lesion size compared to Screening measurements, without receiving any rescue antibacterial therapy. An indeterminate classification is used for a response that could not be adequately inferred because the participant was not assessed because they withdrew consent, were lost to follow-up, or other specified reason.

    Secondary Outcome Measures

    1. Number of Participants With the Indicated Investigator Assessment of Clinical Response in the mITT Population at the Post Therapy Evaluation (PTE) Visit [Screening; 7 to 14 days after the last day of therapy]

      At the PTE Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the infection was sufficiently resolved such that further antibacterial therapy was not needed. These participants may have had some residual changes related to infection requiring ancillary treatment. Clinical Failure was defined as meeting any of the following criteria: infection required additional treatment with alternative antibacterial therapy; participant received antibacterial therapy between the End-of-Treatment (EOT) Visit and the PTE Visit that may have been effective for the infection under study for a different infection from the one under study; unplanned major surgical intervention for the infection under study between the EOT and PTE Visits; participant died before evaluation. Indeterminate: clinical response to test article could not be adequately inferred.

    2. Number of Participants With the Indicated Investigator Assessment of Clinical Response in the Clinically Evaluable-Post Therapy Evaluation (CE-PTE) Population [Screening; 7 to 14 days after the last day of therapy]

      At the PTE Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the infection was sufficiently resolved such that further antibacterial therapy was not needed. These participants may have had some residual changes related to infection requiring ancillary treatment. Clinical Failure was defined as meeting any of the following criteria: infection required additional treatment with alternative antibacterial therapy; participant received antibacterial therapy between the EOT Visit and the PTE Visit that may have been effective for the infection under study for a different infection from the one under study; unplanned major surgical intervention for the infection under study between the EOT and PTE Visits; participant died before evaluation.

    3. Number of Participants With the Indicated Type of Adverse Event (AE) [0 to 37 days]

      An AE is defined as any untoward, undesired, or unplanned event in the form of signs, symptoms, disease, or laboratory or physiologic observations occurring in a person given a test article or in a clinical study. The event does not need to be causally related to the test article or clinical study. A serious adverse event (SAE) is defined as an event that resulted in death, was life-threatening, required hospitalization or prolongation of an existing hospitalization, resulted in a persistent or significant disability or incapacity, resulted in cancer, or resulted in a congenital anomaly or birth defect. A treatment-emergent AE (TEAE) is defined as any AE that newly appeared, increased in frequency, or worsened in severity on or after the initiation of active test article. Vital sign measurements, electrocardiogram findings, and laboratory values classified as adverse events were included in the analysis. Data are presented as the number of participants with at least 1 of the event.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Patients, ages 18 years or older who have signed the informed consent

    • Has a qualifying skin and skin structure infection

    • Female patients must not be pregnant at the time of enrollment

    • Must agree to a reliable method of birth control during the study and for 30 days following the last dose of study drug

    Exclusion Criteria:
    • Infections where the outcome is strongly influenced by factors other than protocol-defined treatment and procedures, that require antibacterial treatment for greater than 14 days

    • Evidence of significant immunological disease

    • Severe sepsis or septic shock

    • Has a history of hypersensitivity or allergic reaction to any tetracycline or to linezolid

    • Has received an investigational drug within past 30 days

    • Women who are pregnant or nursing

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Site 261 Mobile Alabama United States 36608
    2 Site 262 Chula Vista California United States 91911
    3 Site 254 La Mesa California United States 91942
    4 Site 258 Oceanside California United States 92056
    5 Site 252 Santa Ana California United States 92705
    6 Site 260 Santa Ana California United States 92705
    7 Site 269 Stockton California United States 95204
    8 Site 259 Miami Florida United States 33144
    9 Site 264 West Palm Beach Florida United States 33407
    10 Site 256 Augusta Georgia United States 30909
    11 Site 253 Columbus Georgia United States 31904
    12 Site 257 Springfield Massachusetts United States 01199
    13 Site 268 Detroit Michigan United States 48202
    14 Site 266 Butte Montana United States 59701
    15 Site 263 Las Vegas Nevada United States 89119
    16 Site 270 Somers Point New Jersey United States 08244
    17 Site 273 Buffalo New York United States 14215
    18 Site 255 Rapid City South Dakota United States 57702
    19 Site 104 Pleven Bulgaria
    20 Site 102 Plovdiv Bulgaria
    21 Site 105 Plovdiv Bulgaria
    22 Site 103 Rousse Bulgaria
    23 Site 101 Sofia Bulgaria
    24 Site 205 Slavonski Brod Croatia
    25 Site 201 Zagreb Croatia 10000
    26 Site 203 Zagreb Croatia 10000
    27 Site 202 Zagreb Croatia
    28 Site 204 Zagreb Croatia
    29 Site 207 Athens Greece
    30 Site 211 Athens Greece
    31 Site 208 Thessaloniki Greece
    32 Site 209 Thessaloniki Greece
    33 Site 110 Budapest Hungary
    34 Site 111 Budapest Hungary
    35 Site 114 Miskolc Hungary
    36 Site 113 Szeged Hungary
    37 Site 213 Holon Israel
    38 Site 219 Kfar-Saba Israel
    39 Site 214 Nazareth Israel
    40 Site 216 Safed Israel
    41 Site 122 Daugavpils Latvia
    42 Site 123 Liepaja Latvia
    43 Site 124 Rezekne Latvia
    44 Site 120 Riga Latvia
    45 Site 121 Riga Latvia
    46 Site 234 Cusco Peru
    47 Site 233 Lima Peru
    48 Site 236 Lima Peru
    49 Site 238 Lima Peru
    50 Site 239 Lima Peru
    51 Site 237 Trujillo Peru
    52 Site 130 Bydgoszcz Poland
    53 Site 133 Katowice Poland
    54 Site 131 Lodz Poland
    55 Site 134 Olsztyn Poland
    56 Site 132 Warszawa Poland
    57 Site 141 Bucharest Romania
    58 Site 142 Bucharest Romania
    59 Site 146 Bucharest Romania
    60 Site 144 Cluj-Napoca Romania
    61 Site 140 Craiova Romania
    62 Site 145 Timisoara Romania
    63 Site 143 Târgu-Mureş Romania
    64 Site 241 Benoni Gauteng South Africa
    65 Site 244 Thabazimbi Limpopo South Africa
    66 Site 222 Terrassa Barcelona Spain
    67 Site 221 Barcelona Cataluna Spain
    68 Site 247 Ankara Turkey
    69 Site 246 Trabzon Turkey
    70 Site 172 Dnipropetrovsk Ukraine
    71 Site 173 Dnipropetrovsk Ukraine
    72 Site 179 Kharkiv Ukraine
    73 Site 171 Kyiv Ukraine
    74 Site 170 Lviv Ukraine
    75 Site 174 Odesa Ukraine
    76 Site 175 Uzhhorod Ukraine
    77 Site 178 Vinnytsia Ukraine
    78 Site 176 Zaporizhia Ukraine

    Sponsors and Collaborators

    • Paratek Pharmaceuticals Inc

    Investigators

    None specified.

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    Paratek Pharmaceuticals Inc
    ClinicalTrials.gov Identifier:
    NCT02378480
    Other Study ID Numbers:
    • PTK0796-ABSI-1108
    First Posted:
    Mar 4, 2015
    Last Update Posted:
    Mar 21, 2019
    Last Verified:
    Mar 1, 2019

    Study Results

    Participant Flow

    Recruitment Details The study was designed to enroll adult participants with Acute Bacterial Skin and Skin Structure Infection (ABSSSI) that was known or suspected to be due to a Gram-positive pathogen(s). Randomization was stratified across treatment groups by type of infection (wound infection, cellulitis/erysipelas, and major abscess) and geographic region.
    Pre-assignment Detail Participants who met inclusion criteria and did not meet exclusion criteria were randomly assigned to a treatment group, and received their first dose of test article within 4 hours after randomization. All participants were expected to present with ABSSSI severe enough to require a minimum of at least 3 days of intravenous treatment.
    Arm/Group Title Omadacycline Linezolid
    Arm/Group Description Participants received intravenous (IV) omadacycline 100 milligrams (mg) every 12 hours (q12h) (2 doses), followed by 100 mg IV every 24 hours (q24h) (starting 24 hours after the first dose), with the option to switch to a 300 mg oral administration q24h after a minimum of 3 days (6 doses) of IV treatment (6 overall IV doses because of the blinding). Participants received 4 active doses plus 2 placebo doses to maintain the blind. The total treatment duration was 7 to 14 days. Participants received linezolid 600 mg IV q12h with the option to switch to a 600 mg oral administration q12h after a minimum of 3 days (6 doses) of IV treatment. The total treatment duration was 7 to 14 days.
    Period Title: Overall Study
    STARTED 329 326
    COMPLETED 301 294
    NOT COMPLETED 28 32

    Baseline Characteristics

    Arm/Group Title Omadacycline Linezolid Total
    Arm/Group Description Participants received intravenous (IV) omadacycline 100 milligrams (mg) every 12 hours (q12h) (2 doses), followed by 100 mg IV every 24 hours (q24h) (starting 24 hours after the first dose), with the option to switch to a 300 mg oral administration q24h after a minimum of 3 days (6 doses) of IV treatment (6 overall IV doses because of the blinding). Participants received 4 active doses plus 2 placebo doses to maintain the blind. The total treatment duration was 7 to 14 days. Participants received linezolid 600 mg IV q12h with the option to switch to a 600 mg oral administration q12h after a minimum of 3 days (6 doses) of IV treatment. The total treatment duration was 7 to 14 days. Total of all reporting groups
    Overall Participants 323 322 645
    Age, Customized (Count of Participants)
    18-45 years
    146
    45.2%
    154
    47.8%
    300
    46.5%
    >45-65 years
    141
    43.7%
    136
    42.2%
    277
    42.9%
    >65 years
    36
    11.1%
    32
    9.9%
    68
    10.5%
    Sex: Female, Male (Count of Participants)
    Female
    120
    37.2%
    109
    33.9%
    229
    35.5%
    Male
    203
    62.8%
    213
    66.1%
    416
    64.5%
    Race (NIH/OMB) (Count of Participants)
    American Indian or Alaska Native
    7
    2.2%
    5
    1.6%
    12
    1.9%
    Asian
    1
    0.3%
    2
    0.6%
    3
    0.5%
    Native Hawaiian or Other Pacific Islander
    1
    0.3%
    3
    0.9%
    4
    0.6%
    Black or African American
    16
    5%
    8
    2.5%
    24
    3.7%
    White
    294
    91%
    300
    93.2%
    594
    92.1%
    More than one race
    0
    0%
    0
    0%
    0
    0%
    Unknown or Not Reported
    4
    1.2%
    4
    1.2%
    8
    1.2%

    Outcome Measures

    1. Primary Outcome
    Title Number of Participants With Early Clinical Response
    Description Early clinical response is defined as clinical success, which is categorized as survival with at least a 20% reduction of acute bacterial skin and skin structure infection (ABSSSI) primary lesion size compared to Screening measurements, without receiving any rescue antibacterial therapy. An indeterminate classification is used for a response that could not be adequately inferred because the participant was not assessed because they withdrew consent, were lost to follow-up, or other specified reason.
    Time Frame Screening; 48 to 72 hours after the first dose of test article

    Outcome Measure Data

    Analysis Population Description
    Modified Intent-to-Treat (mITT) Population: all randomized participants without a baseline sole Gram-negative ABSSSI pathogen
    Arm/Group Title Omadacycline Linezolid
    Arm/Group Description Participants received intravenous (IV) omadacycline 100 milligrams (mg) every 12 hours (q12h) (2 doses), followed by 100 mg IV every 24 hours (q24h) (starting 24 hours after the first dose), with the option to switch to a 300 mg oral administration q24h after a minimum of 3 days (6 doses) of IV treatment (6 overall IV doses because of the blinding). Participants received 4 active doses plus 2 placebo doses to maintain the blind. The total treatment duration was 7 to 14 days. Participants received linezolid 600 mg IV q12h with the option to switch to a 600 mg oral administration q12h after a minimum of 3 days (6 doses) of IV treatment. The total treatment duration was 7 to 14 days.
    Measure Participants 316 311
    Clinical success
    268
    83%
    266
    82.6%
    Clinical failure
    23
    7.1%
    19
    5.9%
    Indeterminate
    25
    7.7%
    26
    8.1%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Omadacycline, Linezolid
    Comments
    Type of Statistical Test Non-Inferiority
    Comments A non-inferiority margin of 10% was used for the analysis.
    Statistical Test of Hypothesis p-Value
    Comments
    Method
    Comments
    Method of Estimation Estimation Parameter treatment difference
    Estimated Value -0.7
    Confidence Interval (2-Sided) 95%
    -6.3 to 4.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments The 95% confidence interval was constructed based on the Miettinen and Nurminen method without stratification. Treatment difference for a response of clinical success was calculated as omadacycline minus linezolid.
    2. Secondary Outcome
    Title Number of Participants With the Indicated Investigator Assessment of Clinical Response in the mITT Population at the Post Therapy Evaluation (PTE) Visit
    Description At the PTE Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the infection was sufficiently resolved such that further antibacterial therapy was not needed. These participants may have had some residual changes related to infection requiring ancillary treatment. Clinical Failure was defined as meeting any of the following criteria: infection required additional treatment with alternative antibacterial therapy; participant received antibacterial therapy between the End-of-Treatment (EOT) Visit and the PTE Visit that may have been effective for the infection under study for a different infection from the one under study; unplanned major surgical intervention for the infection under study between the EOT and PTE Visits; participant died before evaluation. Indeterminate: clinical response to test article could not be adequately inferred.
    Time Frame Screening; 7 to 14 days after the last day of therapy

    Outcome Measure Data

    Analysis Population Description
    mITT Population
    Arm/Group Title Omadacycline Linezolid
    Arm/Group Description Participants received intravenous (IV) omadacycline 100 milligrams (mg) every 12 hours (q12h) (2 doses), followed by 100 mg IV every 24 hours (q24h) (starting 24 hours after the first dose), with the option to switch to a 300 mg oral administration q24h after a minimum of 3 days (6 doses) of IV treatment (6 overall IV doses because of the blinding). Participants received 4 active doses plus 2 placebo doses to maintain the blind. The total treatment duration was 7 to 14 days. Participants received linezolid 600 mg IV q12h with the option to switch to a 600 mg oral administration q12h after a minimum of 3 days (6 doses) of IV treatment. The total treatment duration was 7 to 14 days.
    Measure Participants 316 311
    Clinical success
    272
    84.2%
    260
    80.7%
    Clinical failure
    20
    6.2%
    27
    8.4%
    Indeterminate
    24
    7.4%
    24
    7.5%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Omadacycline, Linezolid
    Comments
    Type of Statistical Test Non-Inferiority
    Comments A non-inferiority margin of 10% was used for the analysis.
    Statistical Test of Hypothesis p-Value
    Comments
    Method
    Comments
    Method of Estimation Estimation Parameter treatment difference
    Estimated Value 2.5
    Confidence Interval (2-Sided) 95%
    -3.2 to 8.2
    Parameter Dispersion Type:
    Value:
    Estimation Comments The 95% confidence interval was constructed based on the Miettinen and Nurminen method without stratification. Treatment difference for a response of clinical success was calculated as omadacycline minus linezolid.
    3. Secondary Outcome
    Title Number of Participants With the Indicated Investigator Assessment of Clinical Response in the Clinically Evaluable-Post Therapy Evaluation (CE-PTE) Population
    Description At the PTE Visit the investigator indicated one of the following outcomes relating to the primary infection under study: Clinical Success: participant was alive; the infection was sufficiently resolved such that further antibacterial therapy was not needed. These participants may have had some residual changes related to infection requiring ancillary treatment. Clinical Failure was defined as meeting any of the following criteria: infection required additional treatment with alternative antibacterial therapy; participant received antibacterial therapy between the EOT Visit and the PTE Visit that may have been effective for the infection under study for a different infection from the one under study; unplanned major surgical intervention for the infection under study between the EOT and PTE Visits; participant died before evaluation.
    Time Frame Screening; 7 to 14 days after the last day of therapy

    Outcome Measure Data

    Analysis Population Description
    CE-PTE Population: all participants in the mITT Population meeting additional pre-defined criteria
    Arm/Group Title Omadacycline Linezolid
    Arm/Group Description Participants received intravenous (IV) omadacycline 100 milligrams (mg) every 12 hours (q12h) (2 doses), followed by 100 mg IV every 24 hours (q24h) (starting 24 hours after the first dose), with the option to switch to a 300 mg oral administration q24h after a minimum of 3 days (6 doses) of IV treatment (6 overall IV doses because of the blinding). Participants received 4 active doses plus 2 placebo doses to maintain the blind. The total treatment duration was 7 to 14 days. Participants received linezolid 600 mg IV q12h with the option to switch to a 600 mg oral administration q12h after a minimum of 3 days (6 doses) of IV treatment. The total treatment duration was 7 to 14 days.
    Measure Participants 269 260
    Clinical success
    259
    80.2%
    243
    75.5%
    Clinical failure
    10
    3.1%
    17
    5.3%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Omadacycline, Linezolid
    Comments
    Type of Statistical Test Non-Inferiority
    Comments A non-inferiority margin of 10% was used for the analysis.
    Statistical Test of Hypothesis p-Value
    Comments
    Method
    Comments
    Method of Estimation Estimation Parameter treatment difference
    Estimated Value 2.8
    Confidence Interval (2-Sided) 95%
    -1.0 to 6.9
    Parameter Dispersion Type:
    Value:
    Estimation Comments The 95% confidence interval was constructed based on the Miettinen and Nurminen method without stratification. Treatment difference for a response of clinical success was calculated as omadacycline minus linezolid.
    4. Secondary Outcome
    Title Number of Participants With the Indicated Type of Adverse Event (AE)
    Description An AE is defined as any untoward, undesired, or unplanned event in the form of signs, symptoms, disease, or laboratory or physiologic observations occurring in a person given a test article or in a clinical study. The event does not need to be causally related to the test article or clinical study. A serious adverse event (SAE) is defined as an event that resulted in death, was life-threatening, required hospitalization or prolongation of an existing hospitalization, resulted in a persistent or significant disability or incapacity, resulted in cancer, or resulted in a congenital anomaly or birth defect. A treatment-emergent AE (TEAE) is defined as any AE that newly appeared, increased in frequency, or worsened in severity on or after the initiation of active test article. Vital sign measurements, electrocardiogram findings, and laboratory values classified as adverse events were included in the analysis. Data are presented as the number of participants with at least 1 of the event.
    Time Frame 0 to 37 days

    Outcome Measure Data

    Analysis Population Description
    Safety Population: all randomized participants who received test article
    Arm/Group Title Omadacycline Linezolid
    Arm/Group Description Participants received intravenous (IV) omadacycline 100 milligrams (mg) every 12 hours (q12h) (2 doses), followed by 100 mg IV every 24 hours (q24h) (starting 24 hours after the first dose), with the option to switch to a 300 mg oral administration q24h after a minimum of 3 days (6 doses) of IV treatment (6 overall IV doses because of the blinding). Participants received 4 active doses plus 2 placebo doses to maintain the blind. The total treatment duration was 7 to 14 days. Participants received linezolid 600 mg IV q12h with the option to switch to a 600 mg oral administration q12h after a minimum of 3 days (6 doses) of IV treatment. The total treatment duration was 7 to 14 days.
    Measure Participants 323 322
    AE
    158
    48.9%
    157
    48.8%
    TEAE
    156
    48.3%
    147
    45.7%
    Drug-releated AE
    58
    18%
    59
    18.3%
    Severe TEAE
    6
    1.9%
    10
    3.1%
    Serious TEAE
    12
    3.7%
    8
    2.5%
    Drug-related serious TEAE
    0
    0%
    0
    0%
    Serious TEAE leading to death
    1
    0.3%
    2
    0.6%
    TEAE leading to premature drug discontinuation
    6
    1.9%
    7
    2.2%
    TEAE leading to premature discontinuation of study
    6
    1.9%
    7
    2.2%
    TEAE leading to dose interruption
    2
    0.6%
    0
    0%
    Serious TEAEs leading to drug discontinuation
    3
    0.9%
    3
    0.9%

    Adverse Events

    Time Frame Adverse events were assessed from the signing of Informed Consent Form to the time of the Final Follow-up assessment (up to 30 to 37 days after the start of the first infusion of test article).
    Adverse Event Reporting Description Adverse events are reported for members of the Safety Population, comprised of all randomized participants who received test article. Safety assessments included clinical review of reported adverse events and serious adverse events (SAEs). Treatment-emergent adverse events, defined as events occurring after the first dose of active test article, are reported.
    Arm/Group Title Omadacycline Linezolid
    Arm/Group Description Participants received intravenous (IV) omadacycline 100 milligrams (mg) every 12 hours (q12h) (2 doses), followed by 100 mg IV every 24 hours (q24h) (starting 24 hours after the first dose), with the option to switch to a 300 mg oral administration q24h after a minimum of 3 days (6 doses) of IV treatment (6 overall IV doses because of the blinding). Participants received 4 active doses plus 2 placebo doses to maintain the blind. The total treatment duration was 7 to 14 days. Participants received linezolid 600 mg IV q12h with the option to switch to a 600 mg oral administration q12h after a minimum of 3 days (6 doses) of IV treatment. The total treatment duration was 7 to 14 days.
    All Cause Mortality
    Omadacycline Linezolid
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 1/323 (0.3%) 2/322 (0.6%)
    Serious Adverse Events
    Omadacycline Linezolid
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 12/323 (3.7%) 8/322 (2.5%)
    Cardiac disorders
    Cardiac Arrest 0/323 (0%) 1/322 (0.3%)
    Cardiac Failure 0/323 (0%) 1/322 (0.3%)
    General disorders
    Non-Cardiac Chest Pain 1/323 (0.3%) 0/322 (0%)
    Infections and infestations
    Cellulitis 2/323 (0.6%) 1/322 (0.3%)
    Subcutaneous Abscess 2/323 (0.6%) 0/322 (0%)
    Wound Infection 2/323 (0.6%) 0/322 (0%)
    Bacteraemia 1/323 (0.3%) 0/322 (0%)
    Gastroenteritis Rotavirus 1/323 (0.3%) 0/322 (0%)
    Sepsis 0/323 (0%) 1/322 (0.3%)
    Injury, poisoning and procedural complications
    Joint Dislocation 1/323 (0.3%) 0/322 (0%)
    Overdose 1/323 (0.3%) 1/322 (0.3%)
    Nervous system disorders
    Hemiparesis 1/323 (0.3%) 0/322 (0%)
    Psychiatric disorders
    Drug Abuse 0/323 (0%) 1/322 (0.3%)
    Respiratory, thoracic and mediastinal disorders
    Chronic Obstructive Pulmonary Disease 0/323 (0%) 1/322 (0.3%)
    Pulmonary Embolism 0/323 (0%) 1/322 (0.3%)
    Other (Not Including Serious) Adverse Events
    Omadacycline Linezolid
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 104/323 (32.2%) 101/322 (31.4%)
    Gastrointestinal disorders
    Nausea 40/323 (12.4%) 32/322 (9.9%)
    Vomiting 17/323 (5.3%) 16/322 (5%)
    Diarrhea 7/323 (2.2%) 10/322 (3.1%)
    General disorders
    Infusion site extravasation 28/323 (8.7%) 19/322 (5.9%)
    Infections and infestations
    Subcutaneous abscess 16/323 (5%) 19/322 (5.9%)
    Cellulitis 13/323 (4%) 14/322 (4.3%)
    Wound infection 8/323 (2.5%) 5/322 (1.6%)
    Investigations
    Alanine aminotransferase increased 9/323 (2.8%) 14/322 (4.3%)
    Aspartate aminotransferase increased 8/323 (2.5%) 12/322 (3.7%)
    Nervous system disorders
    Headache 10/323 (3.1%) 13/322 (4%)
    Skin and subcutaneous tissue disorders
    Pruritus 7/323 (2.2%) 0/322 (0%)

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

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

    The only disclosure restriction on the Principal Investigator is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is less than or equal to 60 days from the time submitted to the sponsor for review. The sponsor can request changes to the communication and require the removal of confidential information.

    Results Point of Contact

    Name/Title Dr. Paul McGovern; Vice President, Clinical Affairs
    Organization Paratek Pharmaceuticals, Inc.
    Phone 484-751-4935
    Email Paul.Mcgovern@paratekpharma.com
    Responsible Party:
    Paratek Pharmaceuticals Inc
    ClinicalTrials.gov Identifier:
    NCT02378480
    Other Study ID Numbers:
    • PTK0796-ABSI-1108
    First Posted:
    Mar 4, 2015
    Last Update Posted:
    Mar 21, 2019
    Last Verified:
    Mar 1, 2019