DUBLIN – Numab Therapeutics AG has moved closer to the front rank of European antibody developers by raising CHF100 million (US$111 million) in a series C financing round to accelerate the development of NM21-1480, a trispecific antibody that acts both as a PD-L1 inhibitor and 4-1BB (CD137) agonist. It also contains a human serum albumin recognition group, to extend its circulatory half-life.