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A phase 2 single center open label randomised control trial for convalescent plasma therapy in patients with severe COVID-19

Ray et al., Nature Communications, doi:10.1038/s41467-022-28064-7 (date from preprint), CTRI/2020/05/025209
Nov 2020  
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Mortality 33% primary Improvement Relative Risk Conv. Plasma  Ray et al.  LATE TREATMENT  RCT Is late treatment with convalescent plasma beneficial for COVID-19? RCT 80 patients in India (May - October 2020) Lower mortality with convalescent plasma (not stat. sig., p=0.34) c19early.org Ray et al., Nature Communications, Nov 2020 Favorsconv. plasma Favorscontrol 0 0.5 1 1.5 2+
RCT 80 severe COVID-19 patients in India showing no significant difference in 30-day mortality with convalescent plasma therapy (CPT). Patients receiving CPT had greater reduction in inflammatory cytokines, but this did not translate to clinical benefit in terms of survival or duration of hospital stay.
risk of death, 33.0% lower, HR 0.67, p = 0.34, treatment 10 of 40 (25.0%), control 14 of 40 (35.0%), NNT 10, adjusted per study, Mantel-Haenszel, primary outcome.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Ray et al., 29 Nov 2020, Randomized Controlled Trial, India, peer-reviewed, mean age 26.0, 38 authors, study period 31 May, 2020 - 12 October, 2020, trial CTRI/2020/05/025209.
This PaperConv. PlasmaAll
A phase 2 single center open label randomised control trial for convalescent plasma therapy in patients with severe COVID-19
Yogiraj Ray, Shekhar Ranjan Paul, Purbita Bandopadhyay, Ranit D’rozario, Jafar Sarif, Deblina Raychaudhuri, Debaleena Bhowmik, Abhishake Lahiri, Janani Srinivasa Vasudevan, Ranjeet Maurya, Akshay Kanakan, Sachin Sharma, Manish Kumar, Praveen Singh, Rammohan Roy, Kausik Chaudhury, Rajsekhar Maiti, Saugata Bagchi, Ayan Maiti, Md. Masoom Perwez, Abhinandan Mondal, Avinash Tewari, Samik Mandal, Arpan Roy, Moumita Saha, Durba Biswas, Chikam Maiti, Ritwik Bhaduri, Sayantan Chakraborty, Biswanath Sharma Sarkar, Anima Haldar, Bibhuti Saha, Shantanu Sengupta, Rajesh Pandey, Shilpak Chatterjee, Prasun Bhattacharya, Sandip Paul, Dipyaman Ganguly
Nature Communications, doi:10.1038/s41467-022-28064-7
A single center open label phase 2 randomised control trial (Clinical Trial Registry of India No. CTRI/2020/05/025209) was done to assess clinical and immunological benefits of passive immunization using convalescent plasma therapy. At the Infectious Diseases and Beleghata General Hospital in Kolkata, India, 80 patients hospitalized with severe COVID-19 disease and fulfilling the inclusion criteria (aged more than 18 years, with either mild ARDS having PaO2/FiO2 200-300 or moderate ARDS having PaO2/FiO2 100-200, not on mechanical ventilation) were recruited and randomized into either standard of care (SOC) arm (N = 40) or the convalescent plasma therapy (CPT) arm (N = 40). Primary outcomes were all-cause mortality by day 30 of enrolment and immunological correlates of response to therapy if any, for which plasma abundance of a large panel of cytokines was quantitated before and after intervention to assess the effect of CPT on the systemic hyper-inflammation encountered in these patients. The secondary outcomes were recovery from ARDS and time taken to negative viral RNA PCR as well as to report any adverse reaction to plasma therapy. Transfused convalescent plasma was characterized in terms of its neutralizing antibody content as well as proteome. The trial was completed and it was found that primary outcome of all-cause mortality was not significantly different among severe COVID-19 patients with ARDS randomized to two treatment arms (Mantel-Haenszel Hazard Ratio 0.6731, 95% confidence interval 0.3010-1.505, with a P value of 0.3424 on Mantel-Cox Log-rank test). No adverse effect was reported with CPT. In severe COVID-19 patients with mild or moderate ARDS no significant clinical benefit was registered in this clinical trial with convalescent plasma therapy in terms of prespecified outcomes.
Reporting summary. Further information on research design is available in the Nature Research Reporting Summary linked to this article. Data availability All information regarding the availability of data and materials can be addressed to the corresponding authors. De-identified clinical data and experimental data are available on request sharing, which may need approval of the institutional ethical committees. The clinical outcome data for individual participants are provided in supplemental Table 4, which can be used for meta-analyses. The trial protocol is available as supplementary note 1 within the supplementary information file. The mass spectrometry proteomics data have been deposited to the ProteomeXchange Consortium via the PRIDE partner repository 46 , with the dataset identifier PXD025453. The SARS-CoV-2 genome sequences have been uploaded on NCBI GenBank (https://www.ncbi.nlm.nih.gov/) with the GenBank accession number(s) OM169294-OM169315 and GISAID (https:// www.gisaid.org/) with IDs between EPI_ISL_1672634-EPI_ISL_1672658. Source data are provided with this paper. Author contributions Competing interests The authors declare no competing interests. Additional information Supplementary information The online version contains supplementary material available at https://doi.org/10.1038/s41467-022-28064-7. Correspondence and requests for materials should be addressed to Yogiraj Ray or Dipyaman Ganguly. Peer review information Nature Communications..
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Late treatment
is less effective
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