Healthcare stocks were mixed premarket Tuesday, with the State Street Health Care Select Sector SPDR ETF (XLV) up 0.1% and the iShares Biotechnology ETF (IBB) 0.3% lower.
Relay Therapeutics (RLAY) shares were up more than 11% after the company said early phase 2 data showed its experimental drug zovegalisib reduced lesion volume in patients with rare vascular anomalies linked to PIK3CA mutations.