08:48 AM EDT, 05/16/2024 (MT Newswires) -- Health care stocks were mixed premarket Thursday, with the iShares Biotechnology ETF (IBB) recently down 0.3% and the Health Care Select Sector SPDR Fund (XLV) inactive.

Arvinas ( ARVN ) was up more than 5% after it and Pfizer ( PFE ) said updated data from a phase 1b study evaluating metastatic breast cancer drug candidate vepdegestrant in combination with palbociclib for the treatment of advanced breast cancer demonstrated encouraging clinical activity.