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Biotech stocks rose Thursday as AbbVie announced plans to buy cancer drug developer ImmunoGen for $10.1 billion. ImmunoGen develops cancer drugs called antibody-drug conjugates, or ADCs, which are designed to directly kill cancer cells and spare healthy ones. Shares of other biotech companies developing ADCs, which are among the hottest areas in the pharmaceutical industry, jumped on the news of the buyout. The SPDR S&P Biotech ETF , which focuses on small and midsize biotech companies, rose 3% Thursday. Under the terms of the deal, AbbVie will pay $31.26 a share in cash for ImmunoGen, a roughly 95% premium to Wednesday's closing price.
Persons: AbbVie, ImmunoGen, Michael Schmidt Organizations: Biotech, Mersana Therapeutics, ADC Therapeutics, P Biotech ETF, Nasdaq Biotechnology, ImmunoGen, Pfizer, Merck, CNBC PRO Locations: ADCs
June 15 (Reuters) - Mersana Therapeutics (MRSN.O) said on Thursday the U.S. Food and Drug Administration (FDA) had paused enrollment in two studies of its ovarian cancer drug after five deaths in bleeding-related events, sending shares of the company tumbling. Mersana said the cause of the bleeding events was under investigation, but patients who are already enrolled in the studies will continue to receive the treatment. Mersana said it expects the FDA to ask for a comprehensive assessment of the safety data of upifitamab rilsodotin (UpRi), the company's lead drug. "Work is now underway to compile further analyses that may inform FDA," Mersana CEO Anna Protopapas said. UpRi is also being tested in another ovarian cancer study, which has already completed enrollment, and data from it is expected in August.
Persons: Mersana, David Nierengarten, Anna Protopapas, UpRi, Khushi, Savio D'Souza, Shinjini Organizations: Mersana Therapeutics, U.S . Food, Drug Administration, Wedbush Securities, FDA, Thomson Locations: Bengaluru
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