CStone Pharmaceuticals (HKG:2616) said the first patient was successfully dosed in the global multicenter Phase I clinical trial of its independently developed PD-1/VEGF/CTLA-4 trispecific antibody, CS2009, without infusion reactions or other adverse events, according to a Tuesday filing with the Hong Kong Stock Exchange.
CS2009 is a trispecific antibody targeting PD-1, VEGFA, and CTLA-4 to boost the immune response against tumors. It is designed to reinvigorate exhausted immune cells while neutralizing VEGF, making it a potential breakthrough for various cancers, including lung, liver, and ovarian cancer, the filing added.