Navigator Medicines nabbed $100 million in a series A from RA Capital and Forbion to fund the clinical programme for a bispecific antibody it has in-licensed from South Korean biotech IMBiologics. The candidate, dubbed NAV-240 and formerly known as IMB-101, binds both OX40L and TNFα. According to Navigator, the two targets are “critical in the pathogenesis of several inflammatory diseases.” The firm gained the bispecific, along with OX40L-targeting monoclonal antibody IMB-102, via a tech transfer agreement signed with IMBiologics in June and valued at a total of $944.8 million, including an upfront payment. In August, the South Korean firm granted China's Huadong Pharmaceutical rights to develop the two candidates in Asia outside of South Korea, North Korea and Japan.NAV-240 is currently in a Phase I study of healthy volunteers and patients with active rheumatoid arthritis that’s expected to conclude by the end of 2025, per ClinicalTrials.gov. According to incoming chief medical officer Dana McClintock, Tuesday’s financing will help Navigator – a subsidiary of Sera Medicines – launch additional trials of NAV-240 “in the coming months.McClintock previously spent a nine-year stint at Genentech, where she was head of innovation for the Roche unit’s immunology, infectious disease and ophthalmology portfolio. Most recently, she served as chief medical officer of Alladapt Immunotherapeutics