GSK shares analysts get out the red pens after FDA knock-back wipes £3bn from drug maker's value

  • Shares in GSK PLC (LSE:GSK, NYSE:GSK) fell 6% on Thursday, wiping more than £3bn from its market value, after a US advisory committee delivered a serious blow to the drugmaker's oncology ambitions. The Food and Drug Administration's (FDA) Oncology Drugs Advisory Committee (ODAC) voted against approving GSK's multiple myeloma drug Blenrep in two separate phase III trials.