Bispecific antibodies have gotten plenty of press in recent years, but less prominent in headlines are bifunctional ones – i.e., those that boast one binding site for an antigen and another site for a non-antibody molecule such as a toxin or drug, taking aim at a single target and bringing a secondary function for extra oomph.

Ottimo Pharma Ltd. is equipped to file an IND and take its lead bifunctional antibody into phase II development, after closing a $140 million series A. The round will accelerate development of jankistomig, which targets the PD-1 immune checkpoint whilst inhibiting tumor angiogenesis by neutralizing vascular endothelial growth factor (VEGF).

Ottimo Pharma Ltd. has emerged from stealth with a focus on developing innovative cancer therapies for solid tumors. The company’s lead program is jankistomig, a PD-1/VEGFR-2 bifunctional antibody.