NANJING , China , Sept. 12, 2025 /PRNewswire/ -- Nanjing Leads Biolabs Co., Ltd. ("Leads Biolabs" or the "Company," Stock Code: 9887.HK) today announced the first patient has been successfully dosed in a Phase 1b /II clinical trial (NCT07099430) evaluating Opamtistomig (LBL-024, PD-L1/4-1BB bispecific antibody) as monotherapy or in combination with other agents for the ‌first-line treatment of advanced melanoma ‌‌ .

Opamtistomig‌, a uniquely designed PD-L1/4-1BB bispecific antibody that simultaneously blocks PD-1/L1-mediated immune suppression and enhances 4-1BB-regulated T-cell activation. This dual mechanism has the potential to convert "cold tumors" into "hot tumors", overcoming resistance to immunotherapy and improving response rates in hard-to-treat cancers.

In two pr

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