GSK sees blockbuster potential in targeted cancer therapy after promising early data https://www.reuters.com/business/healthcare-pharmaceuticals/gsk-sees-blockbuster-potential-targeted-cancer-therapy-after-promising-early-2026-04-12/?taid=69dbe4b8b797b60001273ed8 https://www.reuters.com/business/healthcare-pharmaceuticals/gsk-sees-blockbuster-potential-targeted-cancer-therapy-after-promising-early-2026-04-12/?taid=69dbe4b8b797b60001273ed8