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Study to Evaluate the Efficacy and Safety of Leronlimab for Patients With Severe or Critical Coronavirus Disease 2019 (COVID-19)

C

CytoDyn

Status and phase

Unknown
Phase 2

Conditions

Coronavirus Disease 2019

Treatments

Drug: Placebos
Drug: Leronlimab (700mg)

Study type

Interventional

Funder types

Industry

Identifiers

NCT04347239
CD12_COVID-19

Details and patient eligibility

About

The purpose of this study is to assess the safety and efficacy of leronlimab (PRO 140) administered as weekly subcutaneous injection in subjects with severe or critical COVID-19 disease.

Full description

This is a Phase 2b/3, two-arm, randomized, double blind, placebo controlled, adaptive design multicenter study to evaluate the safety and efficacy of leronlimab (PRO 140) in patients with severe or critical symptoms of respiratory illness caused by coronavirus 2019 infection. Patients will be randomized to receive weekly doses of 700 mg leronlimab (PRO 140), or placebo. Leronlimab (PRO 140) and placebo will be administered via subcutaneous injection.

A single arm, non-randomized, open-label phase is added to the protocol after completion of enrollment in the Randomized Phase of the study.

The study will have three phases: Screening Period, Treatment Period, and Follow-Up Period.

Enrollment

394 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  1. Male or female adult ≥ 18 years of age at time of screening.

  2. Subjects hospitalized with severe or critical illness caused by coronavirus 2019 infection as defined below:

    A. Severe Illness:

    • Diagnosed with COVID-19 by standard RT-PCR assay or equivalent testing within 5 days of screening

    AND

    Symptoms of severe systemic illness/infection with COVID-19:

    • At least 1 of the following: fever, cough, sore throat, malaise, headache, muscle pain, shortness of breath at rest or with exertion, confusion, or symptoms of severe lower respiratory symptoms including dyspnea at rest or respiratory distress

    AND

    Clinical signs indicative of severe systemic illness/infection with COVID-19, with at least 1 of the following:

    • RR ≥ 30, HR ≥ 125, SaO2 <93% on room air or requires > 2L oxygen by NC in order maintain SaO2 ≥93%, PaO2/FiO2 <300

    AND

    • None of the following: Respiratory failure (defined by endotracheal intubation and mechanical ventilation, oxygen delivered by high-flow nasal cannula, noninvasive positive pressure ventilation, or clinical diagnosis of respiratory failure in setting of resource limitations), Septic shock (defined by SBP < 90 mm Hg, or Diastolic BP < 60 mm Hg), Multiple organ dysfunction/failure

    B. Critical Illness:

    • Diagnosed with COVID-19 by standard RT-PCR assay or equivalent testing within 5 days of screening

    AND

    Evidence of critical illness, defined by at least 1 of the following:

    • Respiratory failure defined based on resource utilization requiring at least 1 of the following: Endotracheal intubation and mechanical ventilation, oxygen delivered by high-flow nasal cannula, noninvasive positive pressure ventilation, ECMO, or clinical diagnosis of respiratory failure (in setting of resource limitation)

    OR

    • Shock (defined by SBP < 90 mm Hg, or Diastolic BP < 60 mm Hg or requiring vasopressors)

    OR

    -Multiple organ dysfunction/failure

  3. Subject, if intubated, positive endexpiratory pressure (PEEP) <15 cmH2O with PaO2/FiO2 >150 mmHg.

  4. Electrocardiogram (ECG) with no clinically significant findings as assessed by the Investigator

  5. Subject (or legally authorized representative) provides written informed consent prior to initiation of any study procedures.

  6. Understands and agrees to comply with planned study procedures.

  7. Women of childbearing potential and their partner must agree to use at least one highly effective method of contraception (e.g., hormonal contraceptives [implants, injectables, combination oral contraceptives, transdermal patches, or contraceptive rings], intrauterine devices, bilateral tubal occlusion, or sexual abstinence) for the duration of the study.

Exclusion criteria

  1. Subjects with do-not-resuscitate (DNR) and/or do-not-intubate (DNI) orders or expected to be made DNR/DNI in setting of resource limitations or family wishes.
  2. Not a candidate for dialysis or continuation of care (or full medical support) in setting of resource limitations.
  3. Subject on continuous vasopressors (at the dose of norepinephrine >20μg/min and/or vasopressin >0.04 units/kg/min) for >48 hours at time of screening.
  4. Subjects who have a history of allergic reactions attributed to compounds of similar chemical or biologic composition to leronlimab (PRO 140) are not eligible.
  5. Inability to provide informed consent or to comply with test requirements
  6. Consideration by the investigator, for safety reasons, that the subject is an unsuitable candidate to receive study treatment
  7. Pregnancy or breast feeding
  8. Subject participating in another study with for an investigational treatment for COVID-19.

Note: Subject who were prescribed (1) hydroxychloroquine or chloroquine with or without azithromycin, (2) Remdesivir, (3) convalescent plasma therapy, or (4) immunomodulatory treatments (including but not limited to sarilumab, clazakizumab, tocilizumab, and anakinra) for the off-label treatment of COVID-19 prior to study enrollment may be included and may continue to receive these agents as part of standard-of-care.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Quadruple Blind

394 participants in 2 patient groups, including a placebo group

Placebo
Placebo Comparator group
Treatment:
Drug: Placebos
700mg Leronlimab
Experimental group
Treatment:
Drug: Leronlimab (700mg)

Trial contacts and locations

18

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Data sourced from clinicaltrials.gov

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