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Remdesivir: A Review of Its Discovery and Development Leading to Emergency Use Authorization for Treatment of COVID-19.

ABSTRACT: The global pandemic of SARS-CoV-2, the causative viral pathogen of COVID-19, has driven the biomedical community to action-to uncover and develop antiviral interventions. One potential therapeutic approach currently being evaluated in numerous clinical trials is the agent remdesivir, which has endured a long and winding developmental path. Remdesivir is a nucleotide analogue prodrug that perturbs viral replication, originally evaluated in clinical trials to thwart the Ebola outbreak in 2014. Subsequent evaluation by numerous virology laboratories demonstrated the ability of remdesivir to inhibit coronavirus replication, including SARS-CoV-2. Here, we provide an overview of remdesivir's discovery, mechanism of action, and the current studies exploring its clinical effectiveness.

SUBMITTER: Eastman RT

PROVIDER: S-EPMC7202249 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Remdesivir: A Review of Its Discovery and Development Leading to Emergency Use Authorization for Treatment of COVID-19.

Eastman Richard T RT Roth Jacob S JS Brimacombe Kyle R KR Simeonov Anton A Shen Min M Patnaik Samarjit S Hall Matthew D MD

ACS central science 20200504 5

The global pandemic of SARS-CoV-2, the causative viral pathogen of COVID-19, has driven the biomedical community to action-to uncover and develop antiviral interventions. One potential therapeutic approach currently being evaluated in numerous clinical trials is the agent remdesivir, which has endured a long and winding developmental path. Remdesivir is a nucleotide analogue prodrug that perturbs viral replication, originally evaluated in clinical trials to thwart the Ebola outbreak in 2014. Sub ...[more]

PMID: 32483554

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Remdesivir use and outcomes during the FDA COVID-19 emergency use authorization period.

Project description:BackgroundRemdesivir (RDV) was approved for treatment of coronavirus disease 2019 (COVID-19), in May 2020 under US Food and Drug Administration emergency use authorization (EUA). Clinical outcomes related to RDV use in hospitalized patients during the EUA period are not well described.MethodsWe conducted a retrospective study of patients who received RDV under EUA. The primary outcome was clinical recovery by day 14 as determined by an eight-category ordinal scale. Secondary outcomes included recovery and survival to day 28, and adverse events. Recovery and survival were calculated using a stratified log-rank Kaplan-Meier estimator and a Cox proportional hazards model.ResultsOverall, 164 patients received RDV between May and October 2020, and 153 (93.3%) had evaluable data. Most (77.1%) were hospitalized within 10 days of symptom onset, and 79.7% started RDV within 48 hours. By days 14 and 28, 96 (62.7%) and 117 patients (76.5%) met the definition of clinical recovery, respectively. Median time to recovery was 6 days [interquartile range (IQR) 4-12]. Mortality rates were 6.5% and 11.8% by days 14 and 28, respectively. Age and time to start of RDV after hospital admission were predictive of recovery and 28-day mortality.ConclusionsIn this real-world experience, outcomes after 5 days of RDV therapy were comparable to those of clinical trials. Disease severity, age, and dexamethasone use influenced clinical outcomes. Time to RDV initiation appeared to affect recovery and 28-day mortality, a finding that should be explored further. Mortality rate decreased over the analysis period, which could be related to dexamethasone use and improved management of COVID-19.

| S-EPMC8474339 | biostudies-literature

Evaluation of safety and effectiveness of remdesivir in treating COVID-19 patients after emergency use authorization study.

Project description:Background: This study aimed to determine the real-world safety and effectiveness of remdesivir in hospitalized adult COVID-19 patients with moderate-to-critical disease in Indonesia. Methods: A multicenter, retrospective cohort study was conducted at four COVID-19 referral hospitals in Jakarta. A total of 587 patients were included, of whom 243 received remdesivir within 72 h of admission. The safety endpoints were the proportions of patients with any adverse event (AE), any grade 3 AE, and AE of each system organ class. The effectiveness endpoints were ICU admission >24 h from baseline, live discharge and mortality at day 14, live discharge and mortality at day 28, and virologic conversion. Patients who received remdesivir within 72 h of admission were considered the treatment group, and those who did not were the control group. Multivariate adjustments were performed using a modified Poisson regression. Results: The study found no significant differences in safety endpoints between the two groups. However, the effectiveness endpoints showed that remdesivir was associated with a decreased risk of ICU admission >24 h from baseline (RR 0.71, 95% CI 0.52-0.96), an increased probability of live discharge at day 14 (RR 1.37, 95% CI 1.08-1.74), and an increased probability of live discharge at day 28 (RR 1.28, 95% CI 1.05-1.57). The rate of virologic conversion was not significantly different between the two groups. Conclusion: The study concludes that remdesivir is safe and effective in the treatment of moderate-to-critical COVID-19 in a real-world setting in Indonesia.

| S-EPMC10347402 | biostudies-literature

Health Care Personnel (HCP) attitudes about COVID-19 vaccination after emergency use authorization.

Project description:BackgroundWe previously reported on COVID-19 vaccination intent among HCP before emergency use authorization. We found widespread hesitancy and a substantial proportion of HCP did not intend to vaccinate.MethodsWe conducted a cross-sectional survey of HCP, including clinical and non-clinical staff, researchers, and trainees between February 21 and March 19, 2021. The survey evaluated vaccine attitudes, beliefs, intent and acceptance.ResultsOverall, 3,981 (87.7%) of respondents had already received a COVID-19 vaccine or planned to get vaccinated. There were significant differences in vaccine acceptance by gender, age, race, and hospital role. Males (93.7%) were more likely than females (89.8%) to report vaccine acceptance (p<0.001). Mean age was higher among those reporting vaccine acceptance (p<0.001). Physicians and scientists showed the highest acceptance rate (97.3%), while staff in ancillary services showed the lowest acceptance rate (79.9%). Unvaccinated respondents were more likely to be females, to have refused vaccines in the past due to reasons other than illness or allergy, to care for COVID-19 patients, or to rely on themselves when making vaccination decision. Vaccine acceptance was more than twice previous intent among Black respondents, an increase from 30.8% to 73.8%, and across all hospital roles with all >80% vaccine acceptance.ConclusionsThe majority of HCP were vaccinated, much higher than reporting intent before vaccine was available. However, many HCP-particularly ancillary services-are still hesitant. Feasible and effective interventions to address the hesitant, including individually-tailored education strategies are needed, or vaccine can be mandated.

| S-EPMC8513411 | biostudies-literature

Authorization of the first COVID-19 emergency vaccines: The matters arising.

Project description: Not available

| S-EPMC8056048 | biostudies-literature

Clinical use of remdesivir in COVID-19 treatment: a retrospective cohort study.

Project description:ObjectivesThis study investigated remdesivir's clinical use to provide direct evidence of effectiveness for a low-middle income Asian setting.DesignA one-to-one propensity score matching retrospective cohort study.SettingA tertiary hospital with COVID-19 treatment facilities in Vietnam.ParticipantsA total of 310 patients in standard of care (SoC) group were matched with 310 patients in SoC+remdesivir (SoC+R) group.Primary and secondary outcome measuresThe primary outcome was time to critical progression, defined as all-cause mortality or critical illness. The secondary outcomes were length of oxygen therapy/ventilation and need for invasive mechanical ventilation. Outcome reports were presented as HR, OR or effect difference with 95% CI.ResultsPatients receiving remdesivir had a lower risk for mortality or critical illness (HR=0.68, 95% CI 0.47 to 0.96, p=0.030). Remdesivir was not associated with a shorter length of oxygen therapy/ventilation (effect difference -0.17 days, 95% CI -1.29 to 0.96, p=0.774). The need for invasive mechanical ventilation was lower in SoC+R group (OR=0.57, 95% CI 0.38 to 0.86, p=0.007).ConclusionsThis study's results showing remdesivir's benefits in non-critical patients with COVID-19 may be extrapolated to other similar low-middle income countries, allowing more regimens for limited resource areas and reducing poor outcomes and equity gap worldwide.

| S-EPMC10276957 | biostudies-literature

Pharmacists' Perceptions and Drivers of Immunization Practices for COVID-19 Vaccines: Results of a Nationwide Survey Prior to COVID-19 Vaccine Emergency Use Authorization.

Project description:Pharmacists play a vital role in recommending and providing vaccines to improve public health and are on the front line of mass immunization efforts. The objective of this study is to evaluate pharmacists' perceptions on COVID-19 vaccines prior to emergency use authorization (EUA) amid a global pandemic. A voluntary, anonymous, cross-sectional survey was conducted between September and November 2020. Survey respondents included a convenience sample of licensed pharmacists in the United States. The primary outcomes were pharmacists' willingness to receive and recommend hypothetical COVID-19 vaccines. Covariates assessed in the survey included COVID-19 exposure or personal experience, primary pharmacy practice setting, background in training, geographic region, and prioritization of clinical data. The data were analyzed using descriptive and inferential statistics. This study surveyed 763 pharmacists and results from 632 participants were included in final analysis. Overall, 67.1% of the pharmacists were willing to receive a COVID-19 vaccine and 63.4% of the pharmacists were willing to recommend a COVID-19 vaccine at ≤1 year from the time of vaccine approval. At >1 year after vaccine approval, 78% of the pharmacists were willing to receive a COVID-19 vaccine and 81.2% of the pharmacists were willing to recommend a COVID-19 vaccine. Survey findings suggest that, while a majority of pharmacists surveyed indicate acceptance of hypothetical COVID-19 vaccines, there remains to be hesitancy among pharmacists to receive or recommend vaccination.

| S-EPMC8396166 | biostudies-literature

Remdesivir for the treatment of COVID-19.

Project description: Not available

| S-EPMC8406992 | biostudies-literature

A review of clinical efficacy data supporting emergency use authorization for COVID-19 therapeutics and lessons for future pandemics.

Project description:Emergency Use Authorization (EUA) allows the US Food and Drug Administration (FDA) to expedite the availability of therapeutics in the context of a public health emergency. To date, an evidentiary standard for clinical efficacy to support an EUA has not yet been established. This review examines the clinical data submitted in support of EUA for antiviral and anti-inflammatory therapeutics for coronavirus disease 2019 (COVID-19) through December of 2021 and the resilience of the authorization as new clinical data arose subsequent to the authorization. In the vast majority of cases, EUA was supported by at least one well-powered randomized controlled trial (RCT) where statistically significant efficacy was demonstrated. This included branded medications already approved for use outside of the context of COVID-19. When used, the standard of a single RCT seemed to provide adequate evidence of clinical efficacy, such that subsequent clinical studies generally supported or expanded the EUA of the therapeutic in question. The lone generic agent that was granted EUA (chloroquine/hydroxychloroquine) was not supported by a well-controlled RCT, and the EUA was withdrawn within 3 months time. This highlighted not only the ambiguity of the EUA standard, but also the need to provide avenues through which high quality clinical evidence for the efficacy of a generic medication could be obtained. Therefore, maintaining the clinical trial networks assembled during the COVID-19 pandemic could be a critical component of our preparation for future pandemics. Consideration could also be given to establishing a single successful RCT as regulatory guidance for obtaining an EUA.

| S-EPMC9538903 | biostudies-literature

Remdesivir: Critical Clinical Appraisal for COVID 19 Treatment.

Project description:Remdesivir is presently been considered as 'molecule of hope' to curb the menace of COVID19. Non-availability of any USFDA approved drug has led to several attempt of drug-repurposing and development of new therapeutic molecules. However, Remdesivir has been found to be effective against a broad range of virus including SARS, MERS and COVID 19 through in-vitro studies. Several clinical research attempt are presently being conducted showing promising result yet not conclusive. This review summarized all such clinical trials to critically appraise the usage of Remdesivir against COVID 19 along with the publications related to the results of the clinical studies. The present regulatory aspect i. e. Emergency Use Authorization (EYA) and information of molecule and plausible mechanism is also dealt.

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