GSK licenses HUTCHMED's first-in-class KRAS-EGFR conjugate HMPL-A830 in deal worth up to $1.3B
- HUTCHMED and a GSK subsidiary signed an exclusive development and license agreement for HMPL-A830, described as a first-in-class KRAS-EGFR Antibody-Targeted Therapy Conjugate (ATTC).
- HMPL-A830 pairs a highly selective, potent small-molecule KRAS inhibitor payload with an anti-EGFR antibody, delivering the inhibitor selectively to EGFR-expressing tumor cells while also blocking EGFR signaling.
- GSK gains worldwide development and commercialization rights excluding Mainland China, Hong Kong, Macau and Taiwan, which HUTCHMED retains.
- Deal terms: $110 million upfront, up to $1.295 billion in additional development, regulatory and commercial milestone payments, plus tiered royalties on net sales.
- HUTCHMED will conduct the global Phase 1 program, expected to start in H2 2026, after which GSK takes over subsequent clinical development and commercialization.
- Initial clinical development will focus on colorectal, pancreatic and lung cancers.
Another Western major fills its oncology pipeline via China-origination rather than in-house discovery — GSK joins a fast-growing queue of ADC/conjugate deals mining HUTCHMED's pipeline for de-risked-but-early assets. The math is telling: $110M upfront against a $1.295B ceiling is roughly 8.5% at signing — real conviction, heavily hedged, standard for a preclinical/Phase 1 asset where GSK is paying mostly for optionality until clinical data lands. The ATTC design — a small-molecule KRAS payload riding an EGFR antibody — is a genuinely differentiated angle in an overcrowded KRAS field, avoiding classic cytotoxic-ADC toxicity while adding tumor-selective targeting. And HUTCHMED keeping Greater China rights again signals its now-familiar playbook: license out ex-China, retain commercial control at home.
GSK to license Hutchmed's KRAS-EGFR cancer drug for $110M upfront ↗