IRIS-7-C&D: Recombinant Interleukin-7 (CYT107) to Restore Absolute Lymphocyte Counts in Sepsis Patients

Sponsor

Revimmune (Industry)

Overall Status

Terminated

CT.gov ID

NCT03821038

Collaborator

Washington University School of Medicine (Other), University Hospital, Limoges (Other), George Clinical Pty Ltd (Industry)

Enrollment

Locations

Arms

28.2

Actual Duration (Months)

2.1

Patients Per Site

0.1

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

This phase II randomized study will assess the effect of receiving IV recombinant human IL-7 (CYT107) versus placebo in lymphopenic sepsis patients

The aim is to confirm the immune cell reconstitution observed in other studies and other patient populations among which the IRIS-7 A&B study which was conducted in the same patient population.

Condition or Disease	Intervention/Treatment	Phase
Sepsis, Severe	Biological: CYT107 Drug: Placebos	Phase 2

Detailed Description

Lymphopenic sepsis Patients will be randomized 3:1 to receive either:

Intravenous (IV) administration of CYT107 at 10 μg/kg twice a week for 3 weeks or b) IV placebo (normal saline).

The effect of CYT107 on Lymphocyte and various T cell populations will be documented with a focus on the first 29 days.

Stopping rules will apply if ALC increases to >2.5 times the upper limit of normal range.

The IRIS-7C & D studies will be conducted at multiple sites in France and the United States. All sites will use the same study design and similar study protocol for a common statistical analysis of 40 evaluable participants.

Study Design

Study Type:

Interventional

Actual Enrollment :

21 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Intervention Model Description:

International, multicenter, randomized, double-blinded placebo- controlledInternational, multicenter, randomized, double-blinded placebo- controlled

Masking:

Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)

Masking Description:

Open-label pharmacist will prepare masked syringes for the ICU

Primary Purpose:

Treatment

Official Title:

International, Multicenter, Randomized, Double-blinded, Placebo-controlled Study of Recombinant Interleukin-7 (CYT107) to Restore Absolute Lymphocyte Counts (ALC) in Patients With Sepsis

Actual Study Start Date :

Jun 1, 2019

Actual Primary Completion Date :

Oct 6, 2021

Actual Study Completion Date :

Oct 6, 2021

Arms and Interventions

Arm	Intervention/Treatment
Experimental: CYT107 Intravenous (IV) administration of CYT107 at 10 μg/kg twice a week for 3 weeks	Biological: CYT107 IV twice a week at 10µg/kg for 3 weeks Other Names: human recombinant glycosylated Interleukin-7
Placebo Comparator: Placebo Intravenous (IV) administration of the same volume of NaCl 0.9% twice a week for 3 weeks	Drug: Placebos IV twice a week at the same volume for 3 weeks Other Names: saline solution

Arm

Intervention/Treatment

Experimental: CYT107

Intravenous (IV) administration of CYT107 at 10 μg/kg twice a week for 3 weeks

Biological: CYT107

IV twice a week at 10µg/kg for 3 weeks

Other Names:

human recombinant glycosylated Interleukin-7

Placebo Comparator: Placebo

Intravenous (IV) administration of the same volume of NaCl 0.9% twice a week for 3 weeks

Drug: Placebos

IV twice a week at the same volume for 3 weeks

Other Names:

saline solution

Outcome Measures

Primary Outcome Measures

Lymphocyte reconstitution [day 29 versus baseline]
Change in absolute lymphocyte count (ALC) of ≥ 50%. If this 50% increase over baseline is reached in the placebo group due to natural immune reconstitution, then the day 29 percent increase of ALC over baseline will be compared between the two groups.

Secondary Outcome Measures

adverse events [90 days after study treatment initiation]
Incidence and scoring of all grade 3-4 adverse events
Secondary Infections [within 90 days after treatment initiation]
Incidence of secondary infections based on pre-specified criteria as adjudicated by the Secondary Infections Committee (SIC)
Days in the ICU [within 90 days after treatment initiation]
Number of days in ICU following study treatment initiation during the index hospitalization
readmissions to the ICU [within 90 days after treatment initiation]
Number of readmissions to ICU following study treatment initiation during index hospitalization
organ support free days [within 90 days after treatment initiation]
Number of organ support free days (OSFDs) following study treatment initiation during the index hospitalization
re-hospitalization [within 90 days following study treatment initiation]
the incidence of re-hospitalization
Mortality rate [90 days after study treatment initiation]
All-cause mortality
T cell reconstitution [through day 90]
Absolute numbers of CD4+ and CD8+T-cell counts
Percentage of patients reaching normal ALC [through day 90]
Percentage of patients reaching absolute lymphocyte counts (ALC) > 1200
Quantification of IL-7 receptor [through day 90]
Effects on soluble and cellular IL-7 receptor (CD127) expression
Quantification of HLA-DR on monocytes [through day 90]
Effects on circulating monocyte HLA-DR expression
Change of IL-6 blood levels [through day 90]
Effects on whole blood circulating cytokines IL-6
Change of IL-10 blood levels [through day 90]
Effects on whole blood circulating IL-10
Change of TNF-α blood levels [through day 90]
Effects on whole blood circulating TNF-α
CYT107 Pharmacokinetic Tmax [Day 1 and Day 15]
determination of Tmax
CYT107 Pharmacokinetic Cmax [Day 1 and Day 15]
determination of Cmax
CYT107 Pharmacokinetic half life [Day 1 and Day 15]
determination of half-life
CYT107 Pharmacokinetic clearance [Day 1 and Day 15]
determination of clearance
CYT107 Pharmacokinetic area under curve [Day 1 and Day 15]
determination of area under curve
anti-CYT107 antibodies [day 1, day 29 or hospital discharge, day 90 and day 180 if previous sample positive]
Quantification of circulating anti-CYT107 antibodies

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years to 85 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

A written, signed informed consent, by the patient or the patient's legally authorized representative
Participants with an absolute lymphocyte count (ALC) ≤ 900 cells/mm3, at two time points at least twelve hours apart, following diagnosis of vasopressor dependent sepsis and,
the second time point should not be performed earlier than 48 hours after sepsis diagnosis,
study drug treatment initiation is required no later than 120 hours (up to 5 days) after the last qualifying ALC ≤ 900 cells/mm3 measure, and
the average value of the two qualifying ALC counts will serve as a baseline to express the percent increase at day 29, or at hospital discharge.
Patients in the ICU with onset of vasopressor dependent sepsis defined as hypotension requiring treatment with any vasopressor(s) for at least 6 hours to maintain a systolic pressure ≥ 90 mmHg or a mean arterial pressure ≥65 mmHg AND at least 1 of the 2 organ dysfunction criteria below:
Acute respiratory failure defined as the need for invasive mechanical ventilation for at least 24 hours to support pulmonary function
Acute kidney injury defined as creatinine > 2.0 mg/dL (based on new abnormal result following onset of sepsis) OR urine output < 0.5 mL/kg/hr for > 4 hours despite adequate fluid resuscitation. In the presence of pre-existing impairment of renal function (defined as a serum creatinine concentration >2 times the upper limit of the normal reference range prior to the onset of sepsis), the patient must meet the other organ dysfunction criteria.
Anticipated hospital duration of up to approx. three weeks after initiating study drug treatment to allow 6 study drug administrations (Days 18 or 19 would be final dose)
This study permits the re-enrollment of a participant who may have been discontinued as a pre-treatment screen failure and/or prior to study drug treatment.
Age and reproductive status:
Women of childbearing potential (WOCBP) must have a negative serum or urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) within 24 hours prior to the start of study treatment
Women must not be breastfeeding
Women of childbearing potential (WOCBP) must agree to follow instructions for method(s) of contraception for the duration of treatment with CYT107 plus 5 half-lives of CYT107 (the terminal half-life of CYT107 is up to 2 days) plus 30 days (duration of ovulatory cycle) for a total of 2 months post-treatment completion.
Males who are sexually active with WOCBP must agree to follow instructions for method(s) of contraception for the duration of treatment with CYT107 plus 5 half-lives of CYT107 plus 90 days (duration of sperm turnover) for a total of 7 months post-treatment completion. In addition, male participants must be willing to refrain from sperm donation during this time.
Azoospermic males are exempt from contraceptive requirements.
WOCBP who are continuously not heterosexually active are also exempt from contraceptive requirements but still must undergo pregnancy testing.

Exclusion Criteria:

Cancer with current chemotherapy or radiotherapy (receipt of chemotherapy or radiotherapy for cancer within the last 6 weeks). All patients with current, or history of, hematologic malignancy (including, but not limited to, ALL, AML, CLL, CML, etc.) or lymphoma will be excluded, regardless of receipt of recent chemotherapy
Patients with minimal chance of survival and life expectancy less than 3-5 days as defined by an APACHE II score of ≥ 35 at time of consideration for study eligibility
Patients with history or current evidence of autoimmune disease including for example: myasthenia gravis, Guillain Barre syndrome, systemic lupus erythematosus, multiple sclerosis, scleroderma, ulcerative colitis, Crohn's disease, autoimmune hepatitis, Wegener's etc.
Patients who have received a solid organ transplant or bone marrow transplant.
Patients with active or a history of acute or chronic lymphocytic leukemia
AIDS-defining illness (category C) diagnosed within the last 12 months prior to study entry
Known history of chronic HBV infection and not on treatment with HBV nucleoside analogues prior to the current hospitalization or HBV DNA > 100 IU/mL
Known history of infection with HCV and currently undergoing treatment for HCV infections or has detectable HCV RNA
Known history of tuberculosis and currently undergoing treatment for tuberculosis
History of splenectomy
Any hematologic disease associated with hypersplenism, such as thalassemia, hereditary spherocytosis, Gaucher's Disease, and autoimmune hemolytic anemia
Participation in another investigational interventional study testing a drug or a medical device within the last 3 months prior to study entry
Patients receiving immunosuppressive drugs, e.g., TNF-alpha inhibitors, for any reason, or systemic corticosteroids other than hydrocortisone at a dose of 300 mg/day
Patients receiving concurrent immunotherapy or biologic agents; including growth factors, cytokines and interleukins other than the study medication : IL-2, Interferons α, β and γ, GM-CSF, G-CSF, HIV vaccines, immunosuppressive drugs, hydroxyurea, immunoglobulins, adoptive cell therapy
Prior exposure to IL 7 or other drugs specifically targeting T cells
Presence of an advanced directive to withhold or withdraw life-sustaining treatment, DNR order or no CPR order, or comfort measures only order
Patients for whom prognosis is poor and source control of septic event is considered unlikely per the clinical and research teams.
Patients under guardianship

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	University of Florida	Gainesville	Florida	United States	32610-0108
2	Washington University School of Medicine	Saint Louis	Missouri	United States	63110
3	CHU Angers	Angers		France	49933
4	Hopital HENRI MONDOR	Créteil		France	94300
5	CHU Dijon Bourgogne	Dijon		France	21000
6	University Hospital of Limoges	Limoges		France	87042
7	Hôpital Edouard Herriot	Lyon		France	69003
8	Chr Orleans	Orleans		France	45067
9	Hopital COCHIN	Paris		France	75014
10	Chru Bretonneau	Tours		France	37044