Explained: The Clinical Trials And Working Of DRDO’s Anti-Covid “2-DG” Drug 

COVID-19 drug called “2-DG” which has been developed by DRDO and Dr Reddy’s Laboratories was launched by Defence Minister Rajnath Singh and Health Minister Dr Harsh Vardhan on Monday (17 May), reports Indian Express.

This comes after the Drugs Controller General of India (DGI) Dr VG Somani cleared the formulation (2-deoxy-D-glucose) on 1 May for emergency use as an adjunct therapy in moderate to severe COVID-19 patients.

How it works

Clinical trial results have shown that this molecule helps in faster recovery of hospitalised patients and reduces supplemental oxygen dependence.

A higher proportion of patients treated with 2-DG showed RT-PCR negative conversion in Covid patients. The drug will be of immense benefit to the people suffering from Covid-19.

It accumulates in the virus-infected cells and prevents virus growth by stopping viral synthesis and energy production. Its selective accumulation in virally infected cells makes this drug unique.

In the ongoing second COVID-19 wave, a large number of patients are facing severe oxygen dependency and need hospitalisation.

"The drug is expected to save precious lives due to the mechanism of operation of the drug in infected cells. This also reduces the hospital stay of COVID-19 patients," the government had stated.

Clinical Trials

In April 2020, during the first wave of the pandemic, INMAS-DRDO scientists conducted laboratory experiments with the help of the Centre for Cellular and Molecular Biology (CCMB), Hyderabad and found that this molecule works effectively against the SARS-CoV-2 virus and inhibits viral growth.

Based on these results, the Drugs Controller General of India's (DCGI) Central Drugs Standard Control Organization (CDSCO) permitted the Phase-II clinical trial of 2-DG in COVID-19 patients in May 2020.

The DRDO, along with its industry partner DRL, Hyderabad, started clinical trials to test the safety and efficacy of the drug in COVID-19 patients.

Phase-IIa was conducted in six hospitals and Phase IIb (dose-ranging) clinical trial was conducted at 11 hospitals all over the country. The Phase-II trial was conducted on 110 patients.

In efficacy trends, the patients treated with 2-DG showed faster symptomatic cure than Standard of Care (SoC) on various endpoints.

"A significantly favourable trend (2.5 days difference) was seen in terms of the median time to achieving normalisation of specific vital signs parameters when compared to SoC," the ministry said.

Based on successful results, the DCGI further permitted the Phase-III clinical trials in November 2020.

The Phase-III clinical trial was conducted on 220 patients between December 2020 to March 2021 at 27 Covid hospitals in Delhi, Uttar Pradesh, West Bengal, Gujarat, Rajasthan, Maharashtra, Andhra Pradesh, Telangana, Karnataka and Tamil Nadu. The detailed data of the Phase-III clinical trial was presented to the DCGI.

"In 2-DG arm, significantly higher proportion of patients improved symptomatically and became free from supplemental oxygen dependence (42% vs 31%) by Day-3 in comparison to SoC, indicating an early relief from Oxygen therapy/dependence," the ministry stated.

Similar observations were also made for patients aged more than 65 years.

It should be noted that the anti-Covid-19 therapeutic application of the drug 2-deoxy-D-glucose (2-DG) has been developed by INMAS, a lab of the Defence Research and Development Organisation (DRDO), in collaboration with Dr Reddy's Laboratories (DRL), Hyderabad.

Being a generic molecule and analogue of glucose, it can be easily produced and made available in plenty in the country.

The drug comes in powder form in a sachet, which is taken orally by dissolving it in water.

With IANS Inputs