An antiviral drug, C9H14N5O4P, used in the form of a prodrug (tenofovir disoproxil fumarate) to treat chronic hepatitis B and, in combination with other drugs, to treat HIV infection or to reduce the risk of HIV infection.
[teno-, of unknown origin + fo- (alteration of pho(spho)-) + (anti)vir(al).]
Patients in four cohorts will be administered CRV431 in doses ranging from 75 mg to 375 mg in combination with 300 mg tenofovir disoproxil fumarate antiviral therapy, over a 28-day period.
In a sub-analysis of the DISCOVER trial, Descovy reached intracellular drug concentration levels above the estimated protective threshold significantly more quickly than Truvada (emtricitabine 200 mg and tenofovir disoproxil fumarate 300 mg tablets; F/TDF), and additional pharmacokinetic data confirm that these drug concentration levels persist longer than Truvada.
The victim compensation fund is being arranged for patients harmed after taking the company's TDF (tenofovir disoproxil fumarate) drugs as part of their treatment for HIV or AIDS or taken by uninfected individuals as part of the HIV prevention strategy called pre-exposure prophylaxis.
Tenofovir disoproxil fumarate (TDF) is a prodrug of tenofovir diphosphate, a structural analog of deoxyadenosine triphosphate, which is the natural substrate for the viral enzyme reverse transcriptase.
According to the company, Vemlidy is a novel, targeted prodrug of tenofovir that has demonstrated antiviral efficacy similar to Viread (tenofovir disoproxil fumarate, TDF) 300 mg, with better alanine aminotransferase normalisation and improved bone and renal safety at one-tenth of the dose.
Tenofovir disoproxil fumarate monotherapy for nucleos(t)ide-naive chronic hepatitis B patients in Korea: data from the clinical practice setting in a single-center cohort.
Yuen, Chief of Gastroenterology and Hepatology, University of Hong Kong, and Principal Investigator for the ACHIEVE trial, will show the full 24-week clinical and virological data from the 25mg, 50mg and 100mg cohorts of inarigivir monotherapy, including sequential dosing data following the switch from inarigivir to tenofovir disoproxil fumarate (Viread(r)).
"Long-acting injectable agents have the potential to prevent HIV acquisition without relying on adherence to a daily oral regimen," it notes.Currently, the only licensed pre-exposure drug is a daily oral pill called tenofovir disoproxil fumarate 300 mg plus emtricitabine 200 mg (TDF/FTC), and sold under the brand name Truvada.
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