Roche Signs New ADC Deal With Hansoh: $400 Million Upfront and Over $15 Billion in Milestones

Roche and Hansoh Pharmaceutical have signed a new ADC collaboration under which Hansoh will receive a $400 million upfront payment, a $110 million one-year payment, and potential milestone payments exceeding $15 billion, plus tiered royalties on future sales. This is the second deal between the two companies, following their first collaboration in October 2025; the original article says the scale and depth of this round exceed the first.