GSK's long-acting injection beats Truvada in HIV prevention trial
[BENGALURU] GlaxoSmithKline said an injection every other month of its cabotegravir drug was shown to avert an HIV infection more effectively than Gilead's daily Truvada pill, potentially giving its ViiV unit a foothold in HIV prevention.
The drug trial involving men who have sex with men was stopped early by an independent monitoring board after cabotegravir was found to be 69 per cent more effective than the current standard of care, Truvada, the British drugmaker said on Monday.
But the market segment GSK is eyeing is about to become more competitive as cheaper generic versions of Truvada are expected to be launched in the United States in September, as the patent expires.
Gilead, for its part, hopes that Truvada users will opt against the cheaper copies and instead switch to its new daily pill Descovy, approved in October 2019 after it was shown to be less toxic to the kidneys and bones.
Truvada generated US$2.8 billion in sales last year, both from treatment and preventing an HIV infection.
GSK, which is trailing Gilead in the HIV treatment market, will speak to drug regulators about a possible approval of cabotegravir based on the prevention trial, a spokesman said.
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GSK has won approval in Canada for cabotegravir as one of two key ingredients in long-acting HIV treatment combination Cabenuva, whereas in the United States, the company has run into delays seeking the go-ahead for Cabenuva. Cabotegravir as a single agent has currently no approved uses.
An initial readout from the trial, which was started in late 2016, was previously not expected before next year.
Two percent of trial participants on antiviral drug cabotegravir stopped taking the drug due to injection site reactions or injection intolerance.
A similar trial to test the cabotegravir injection to prevent HIV in women, is still ongoing.
Pfizer and Shionogi & Co Ltd hold small stakes in GSK's HIV-focused ViiV Healthcare division.
REUTERS
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