今日上午A股跌幅最大企业，主动撤回乙肝药上市申请

Core Viewpoint - The company has withdrawn its drug registration application for the hepatitis B treatment, leading to a significant drop in its stock price, indicating investor concerns about the future of its drug development pipeline [1][2][3] Group 1: Drug Development and Regulatory Actions - The drug in question, Peginterferon α-2a injection, was the fastest progressing hepatitis B drug in the company's pipeline and had recently reached the application stage for market approval [1] - The company received a termination notice from the National Medical Products Administration, agreeing to the withdrawal of the drug registration application for the hepatitis B indication [1][2] - The company plans to supplement clinical case studies as per regulatory requirements and may resubmit the registration application in the future [2][3] Group 2: Financial Impact and Market Reaction - The withdrawal of the registration application resulted in an 11.78% drop in the company's stock price, making it the largest decline in the A-share market on that day [1] - The company has fully recognized impairment losses related to the development expenses of the Peginterferon α-2a injection project, which will reduce its profit by 111 million yuan in 2025 [3] - This decision has raised concerns among investors about the viability of the drug's development for hepatitis B, although the company maintains that it has not abandoned the project [3] Group 3: Industry Context - Hepatitis B virus infection is a significant global public health issue, with chronic hepatitis B potentially leading to severe complications like cirrhosis and liver cancer if not properly managed [2] - The company has previously achieved a high cure rate for hepatitis C with its all-oral drug series, but faces increasing competition in the hepatitis C market, prompting a shift towards innovative hepatitis B treatments [2]