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Mersana Therapeutics

ADC platform company betting on B7-H4: emiltatug ledadotin (Emi-Le) has Breakthrough designation in adenoid cystic carcinoma and activity in TNBC after TOP1 ADCs.

Emi-Le (XMT-1660, B7-H4, Dolasynthen platform) showed 23% ORR in TNBC previously treated with topoisomerase-1 ADCs and confirmed responses in ACC; FDA Breakthrough Therapy for ACC (May 2026) plus Fast Track designations. Mersana also pioneered immunosynthen STING-agonist ADCs (XMT-2056).

Headquarters
Cambridge, MA, US
Type
biotech · MRSN

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