Sunshine Lake Pharma (HKG:6887) said China's drug regulator accepted a clinical trial application for HEC-921, its experimental LY6G6D/4-1BB bispecific antibody for advanced solid tumors, according to a Thursday Hong Kong bourse filing.
The company said the phase 1 study is expected to begin in 2026.
HEC-921 is primarily being developed for LY6G6D-positive colorectal cancer, the filing said.