GSK's Bepirovirsen Accepted for Expedited Regulatory Review in Japan for Chronic Hepatitis B
GSK sits 83% above its 52-week low of $32.38.
Summary
Japan's MHLW has accepted GSK's new drug application for bepirovirsen, a potential first-in-class treatment for chronic hepatitis B, for expedited review. This marks the first global regulatory filing for the drug.
Key Events · Product Development and Regulatory · GSK
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Regulatory Review Accepted in Japan
Japan's Ministry of Health, Labour and Welfare (MHLW) has accepted GSK's New Drug Application (NDA) for bepirovirsen.
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Expedited Review Status
Bepirovirsen was granted SENKU designation in Japan in August 2024, enabling an expedited regulatory review process.
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Potential First-in-Class Treatment
The investigational antisense oligonucleotide (ASO) is a potential first-in-class treatment for chronic hepatitis B, a condition affecting nearly one million people in Japan.
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Supported by Positive Phase III Data
The regulatory submission is backed by statistically significant and clinically meaningful functional cure rates demonstrated in pivotal Phase III B-Well trials.
Analysis · GSK · Life Sciences
Japan's Ministry of Health, Labour and Welfare (MHLW) has accepted GSK's New Drug Application for bepirovirsen, a potential first-in-class treatment for chronic hepatitis B. This marks a significant advancement in the drug's development, following positive Phase III B-Well trials. The SENKU designation, granted in August 2024, ensures an expedited review process, potentially accelerating market access in Japan, a country where nearly one million people live with chronic hepatitis B. This is the first global regulatory filing for bepirovirsen, signaling progress towards commercialization for a drug targeting a major public health challenge.
How filings like this one have moved
In the 30 days to Sep 11, 2026, 35.8% of the 1706 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.10%. These are measured outcomes after filings of this importance, not a forecast for this one.
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At the time of this filing, GSK was trading at $59.40 on NYSE in the Life Sciences sector, with a market capitalization of approximately $121B. The 52-week trading range was $32.38 to $61.70. This filing was assessed with positive market sentiment and an importance score of 8 out of 10.