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Citi stays neutral on GSK despite breakthrough hepatitis B drug due to commercial uncertainties.

Market News
29 May 2026
Proactive Investors - Finance
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Neutral
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Citi maintains a neutral rating on GSK shares despite promising clinical trial results for its experimental hepatitis B drug, bepirovirsen. The drug showed a potential functional cure for 19-26% of patients, a significant improvement over current treatments that rarely eliminate the virus. However, Citi cites unresolved commercial questions such as pricing, market access, and treatment monitoring challenges that may delay shareholder value realization. Hepatitis B affects 300 million globally, and the drug could reach peak sales of £1.6 billion if these issues are addressed.

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