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GlaxoSmithKline has filed its shingles vaccine Shingrix for US regulatory approval, the drugmaker said on Monday, bringing the potential $1 billion-a-year seller a step closer to market.

Shingrix is viewed by analysts as among the British company’s most promising experimental products, since it has shown greater protection among older recipients than Merck & Co’s rival shot Zostavax.

GSK itself highlighted Shingrix as one of its top near-term pipeline hopes last November, during its first research and development day in more than a decade.

The company, which will see Emma Walmsley take over as chief executive in 2017, is seeking to revitalise a drug portfolio hit by falling sales of best-selling inhaled lung treatment Advair.

In clinical trials, GSK’s vaccine remained 90 per cent effective in people over age 70, even four years after injections. Zostavax efficacy, by contrast, varies between 18 and 70 per cent, and it declines noticeably in older people.

People who are 70 years or older are often most at risk from shingles, a painful, itchy rash that results from the reactivation of latent chickenpox virus.

The impressive trial results should put Shingrix in a strong competitive position, analysts believe, even though it requires two doses, against

just one for Zostavax, and it is also linked to more injection site reactions.

Sales of Zostavax, the only shingles vaccine on the market at present, totalled $749 million in 2015. GSK’s vaccine contains a component from US biotech firm Agenus, which is entitled to royalties on future sales.

Vennila Arivoli
Vennila is one of BioTecNika's Online Editors. When she is not posting news articles and jobs on the website, she can be found gardening or running off to far flung places for the next adventure, armed with a good book and mosquito repellant. Stalk her on her social networks to see what she does next.