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J&J to buy cancer drug technology developer Firefly Bio for $1 billion

By Thomson Reuters Jun 8, 2026 | 7:08 AM

June 8 (Reuters) – Johnson & Johnson said on Monday it will acquire biotech Firefly Bio ​for $1 billion in cash, ‌as it looks to expand its cancer drug pipeline.

Firefly’s Firelink platform uses antibodies to deliver a protein-degrading ‌drug ​directly into cancer ⁠cells, an approach ⁠J&J says could help attack tumors while sparing more healthy tissue than existing treatments.

The platform ​for tumors with a mutation in a gene ⁠known as KRAS “bolsters ⁠Johnson & Johnson’s oncology pipeline ​and ambition to develop targeted medicines ​for the most prevalent and ‌hard-to-treat solid tumors with high unmet need,” said the drugmaker.

“KRAS has notoriously been considered ⁠an undruggable target and patients with KRAS-driven cancers continue to face limited treatment ⁠options ‌with survival measured ⁠in months, not years,” ​said ‌John Reed, executive vice ​president, innovative ⁠medicine, research & development at J&J.

The transaction is expected to close later this year.

(Reporting by Puyaan Singh in Bengaluru; Editing by ​Shinjini Ganguli)