Convalescent Methylene Blue Treated (MBT) Plasma for Early Treatment in Non-hospitalised Mild or Moderate COVID-19 Patients: a Randomized Double Blind Study (COnV-ert)
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 发起方
- 入组人数
- 384
- 试验地点
- 4
- 主要终点
- SARS-CoV-2 viral load (safety and efficacy)
研究概览
简要总结
This is a prospective, randomized (1:1), double blind study of Convalescent anti-SARS-CoV-2 MBT Plasma (also known as convalescent plasma) plus standard medical treatment (SMT) versus placebo plus SMT in mild or moderate COVID-19 patients who are non-hospitalised. Subjects with confirmed infection by SARS-CoV-2 will receive SMT plus a total of 200-300 mL of convalescent plasma that has been pathogen-inactivated using MBT or placebo.
Approximately 474 individuals will be randomized (1:1) with an interim analysis after the first 60 subjects (30 in each arm).
The sample size will be re-assessed upon interim analysis. Approximately 135 individuals from selected study sites will be included in the substudy to assess the immune response and the methods of sampling.
This is a prospective, randomized (1:1), double blind study of Convalescent anti-SARS-CoV-2 MBT Plasma (also known as convalescent plasma) plus standard medical treatment (SMT) versus placebo plus SMT in mild or moderate COVID-19 patients who are non-hospitalised. Subjects with confirmed infection by SARS-CoV-2 will receive SMT plus a total of 200-300 mL of convalescent plasma that has been pathogen-inactivated using MBT or placebo.
Approximately 474 individuals will be randomized (1:1) with an interim analysis after the first 60 subjects (30 in each arm).
The sample size will be re-assessed upon interim analysis. Approximately 135 individuals from selected study sites will be included in the substudy to assess the immune response and the methods of sampling.
The investigational product will be administered by IV infusion at baseline. Participants will continue their standard medical treatment (SMT) for SARS-CoV-2 infection as prescribed by their regular physician. If applicable, SMT may be modified during the study, depending on personal requirements, the severity and progression of the disease, and need for hospitalization.
Subjects' participation (from inclusion/baseline visit to the end-of-study visit) will be up to 60 days.
详细描述
This is a prospective, randomized (1:1), double blind study of Convalescent anti-SARS-CoV-2 MBT Plasma (also known as convalescent plasma) plus standard medical treatment (SMT) versus placebo plus SMT in mild or moderate COVID-19 patients who are non-hospitalised. Subjects with confirmed infection by SARS-CoV-2 will receive SMT plus a total of 200-300 mL of convalescent plasma that has been pathogen-inactivated using MBT or placebo.
Study candidates will voluntarily express their interest in participating in the study through the study website or will be offered to participate at the emergency (ER) and out-patient departments (OPD) of the participating hospitals. Candidates registered on the website will be contacted by study physicians by phone to inform them about the study and check their suitability for the study. Suitable candidates will be scheduled an inclusion/baseline visit in which informed consent will be obtained (i.e., the paper informed consent will be signed), and their eligibility will be confirmed. Candidates identified through ER and OPD departments will undergo an inclusion/baseline visit, where the informed consent will be obtained and eligibility will be checked. A subgroup of eligible candidates from selected study sites will be offered participation in the substudy to assess the immune response and the methods of sampling.
Blood and nasopharyngeal samples will be obtained from all eligible candidates. Eligible candidates will be randomized and administered an intravenous (IV) infusion at baseline (convalescent plasma or placebo). Both the investigator and the participant will be blinded to the study treatment.
Specifically, subjects randomized to combination convalescent anti-SARS-CoV-2 MBT plasma plus SMT will undergo an ABO compatibility test and will receive a single infusion of 200 to 300 ml of ABO-compatible convalescent plasma. Subjects randomized to placebo plus SMT will receive a single infusion of 200 to 300 ml of sterile saline solution 0.9%. Infusion will be administered at baseline, using standard procedures for administration of fresh frozen plasma. Small adults weighing less than 45 kg will receive one infusion of 5 ml of convalescent plasma or placebo per kilogram of body weight.
Participants will be trained on the completion of symptoms diary card and safety diary card.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 50 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •1. Adult male or female individuals of ≥50 years old.
- •2. In women of childbearing potential1, negative pregnancy test at inclusion/baseline.
- •3. Has confirmed SARS-CoV-2 infection as determined by PCR or validated antigen rapid diagnostic test2 from nasopharyngeal swabs ≤5 days prior to inclusion/baseline visit.
- •4. Symptomatic with mild or moderate COVID-19 with symptoms onset date ≤ 7 days prior to inclusion/baseline visit.
- •a. Mild COVID-19: Individuals who have any of the common signs and/or symptoms of COVID-19 (i.e., fever, cough, sore throat, malaise, headache, muscle pain) without shortness of breath, dyspnoea, or abnormal chest imaging.
- •Moderate COVID-19: Individuals who have evidence of lower respiratory disease by clinical assessment or imaging and a saturation of oxygen (SpO2) ≥94% on room air at sea level.
- •5. Willing to comply with the requirements of the protocol and available for follow-up for the planned duration of the study.
- •6. Has understood the information provided and capable of giving informed consent.
- •1 A woman will be considered of childbearing potential if not permanently sterilized nor postmenopausal. Permanent sterilization methods include tubal ligation, hysterectomy and bilateral oophorectomy. Postmenopausal is defined as 12 months with no menses without an alternative medical cause.
- •2 PanbioTM COVID-19 Ag Rapid Test (Abbott), STANDARDTM Q COVID-19 Ag Test (Roche) or any other CE marketed test for SARS-CoV-2 Ag detection.
排除标准
- •If female, pregnant, breastfeeding, or planning a pregnancy during the study.
- •Severe or critical COVID-19:
- •Severe COVID-19: respiratory frequency >30 breaths per minute, SpO2 <94% on room air at sea level, ratio of arterial partial pressure of oxygen to fraction of inspired oxygen (PaO2/FiO2) <300 mmHg, or lung infiltrates >50%.
- •Critical COVID-19: respiratory failure, septic shock, and/or multiple organ dysfunction.
- •Current hospital admission for any cause.
- •History of previous confirmed SARS-CoV-2 infection.
- •History of significantly abnormal liver function (Child Pugh C).
- •History of chronic kidney disease (CKD) ≥ stage 4, or need of dialysis treatment.
- •Any pre-existing condition that increases risk of thrombosis.
- •History of allergic reactions to blood or plasma products or methylene blue.
- •Known IgA deficiency with anti-IgA antibodies.
- •Medical conditions for which 300ml of intravenous fluid is considered dangerous (i.e., decompensated heart failure or renal failure with fluid overload).
- •Inability to consent and/or comply with study requirements, in the opinion of the investigator.
- •Currently participating or planning to participate in any interventional study for the treatment of COVID-19 or SARS-CoV-2 infection until day 60.
研究组 & 干预措施
Experimental group
Subjects randomized to convalescent anti-SARS-CoV-2 MBT plasma plus SMT will receive one infusion of 200 to 300 ml of ABO-compatible convalescent plasma obtained from a convalescent donor.
干预措施: Convalescent anti-SARS-CoV-2 MBT plasma (Biological)
Control Group
Subjects randomized to placebo plus SMT will receive one infusion of 200 to 300 ml of sterile saline solution 0.9%.
干预措施: Control Group (Other)
结局指标
主要结局
SARS-CoV-2 viral load (safety and efficacy)
时间窗: Day 7
Assess the therapeutic potential of early administration of convalescent MBT plasma in reducing SARS-CoV-2 viral load at day 7, measured by quantitative RT-PCR (RT-qPCR) in non-hospitalised mild or moderate COVID-19 patients.
Hospitalization rate (safety and efficacy)
时间窗: Day 28
Assess the therapeutic potential of early administration of convalescent MBT plasma in reducing the rate of hospitalization in non-hospitalised mild or moderate COVID-19 patients.
次要结局
- Death rate (safety and efficacy)(Day 60)
- COVID-19 symptoms severity score (safety and efficacy)(Day 14)
- Resolution of symptoms (safety and efficacy)(Day 28)
- Absolute neutralization titers against SARS-CoV-2 in plasma (safety and efficacy)(Baseline and Day 7)
- Titers of neutralizing antibodies against SARS-CoV-2 in plasma (safety and efficacy)(Baseline and Day 60)
- Adverse events (AE) (safety and efficacy) Adverse events (AE) Adverse events (AE)(Day 28)
- Prealbumin (safety and efficacy)(Baseline and Day 7)
- D-dimer (safety and efficacy)(Baseline and Day 7)
- COVID-19 WHO Clinical progression scale score (safety and efficacy)(Day 60)
- Ferritin (safety and efficacy)(Baseline and Day 7)
- Leukocyte count (safety and efficacy)(Baseline and Day 7)
- Interleukin 6 (IL-6) (safety and efficacy)(Baseline and Day 7)
- C reactive protein (CRP) (safety and efficacy)(Baseline and Day 7)
- Reduction of SARS-CoV-2 viral load (safety and efficacy)(Baseline and Day 28)
- Lymphocyte count (safety and efficacy)(Baseline and Day 7)
- SARS-CoV-2 viral load of self-collected middle turbinate (MT) swab and saliva samples compared to nasopharyngeal swabs collected by a healthcare worker (safety and efficacy)(Baseline and Day 7)