Background: Several therapeutic agents have been investigated for treatment of novel coronavirus 2019 (nCOV-2019). We conducted a systematic review and metaanalysis to assess the efficacy of various treatment modalities in nCOV-2019 patients. Methods: A literature search was conducted before 29 June 2020 in PubMed, Google Scholar and Cochrane library databases. A fixed-effect model was applied if I 2 < 50%, else results were combined using random-effect model. Risk ratio (RR) or standardized mean difference (SMD) along with 95% confidence interval (95% CI) was used to pool the results. Between-study heterogeneity was explored using influence and sensitivity analyses, and publication bias was assessed using funnel plots. Entire statistical analysis was conducted in R version 3.6.2. Results: Fifty studies involving 15 in vitro and 35 clinical studies including 9170 nCOV-2019 patients were included. Lopinavir-ritonavir was significantly associated with shorter mean time to clinical recovery (SMD −0.32; 95% CI −0.57 to −0.06), remdesivir was significantly associated with better overall clinical recovery (RR 1.17; 95% CI 1.07 to 1.29), and tocilizumab was associated with less all-cause mortality (RR 0.38; 95% CI 0.16 to 0.93). Hydroxychloroquine was associated with longer time to clinical recovery and less overall clinical recovery. It additionally had higher all-cause mortality and more total adverse events. Conclusion: Our meta-analysis suggests that except in vitro studies, no treatment has shown overall favourable outcomes in nCOV-2019 patients. Lopinavir-ritonavir, remdesivir and tocilizumab may have some benefits, while hydroxychloroquine administration may cause harm in nCOV-2019 patients. Results from upcoming large clinical trials may further clarify role of these drugs. K E Y W O R D S humans, interventions, nCOV-2019, novel coronavirus 2019, treatments 2 of 21 | MISRA et Al. 2 | METHODS 2.1 | Electronic search Electronic databases including, PubMed, EMBASE, Medline, Google Scholar, Cochrane library and clinicaltrials.gov were searched till 29 June 2020. The following MeSH terms or free text terms were used: '2019 novel coronavirus', '2019 nCOV', 'COVID19', 'SARS-CoV-2', 'drug therapy', 'antiviral therapy', 'symptomatic treatment', 'immunotherapy'. The detailed search criteria are given in the Appendix S1. Furthermore, the reference list of all the relevant identified articles was thoroughly searched. Only those articles were included whose full texts were available in English language. Studies published on human subjects after 31 December 2019 since the nCOV-2019 outbreak initiated, were only searched. The protocol for this systematic review and meta-analysis was registered in PROSPERO (ID: CRD42020175792), and there were no major deviations from the published protocol in PROSPERO. 2.2 | Population Subjects diagnosed with pneumonia caused by new coronavirus 2019 infection (nCOV-2019) confirmed positive on highthroughput sequencing or real-time reverse-transcription polymerase chain reaction analysis of thro...