On March 31, 2026 NextCure, Inc. (Nasdaq: NXTC), a clinical-stage biopharmaceutical company committed to discovering and developing novel, first-in-class, and best-in-class therapies to treat cancer and Simcere Zaiming Pharmaceutical Co., Ltd., (Simcere) an oncology-focused biopharmaceutical company, reported that an abstract for SIM0505 has been accepted for the American Society for Clinical Oncology (ASCO 2026) meeting being held May 29 – June 2 in Chicago, Illinois. SIM0505 is an investigational antibody drug conjugate (ADC) targeting Cadherin-6 (CDH6) with a proprietary topoisomerase 1 inhibitor (TOPOi) payload.

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The ongoing open-label, Phase 1 study (NCT06792552) is evaluating SIM0505 in advanced solid tumors, including ovarian cancer, with an emphasis on platinum resistant ovarian cancer.

About SIM0505

SIM0505 is a novel antibody drug conjugate (ADC) directed to cadherin-6 (CDH6 ADC), featuring a proprietary topoisomerase 1 inhibitor (TOPOi) payload. The ADC is designed for broad anti-tumor activity, fast systemic clearance and an improved potential therapeutic window. SIM0505 is being evaluated in an open-label, Phase 1 study (NCT06792552) for the potential treatment of advanced solid tumors, including ovarian cancer, with an emphasis on platinum resistant ovarian cancer. NextCure holds exclusive global rights for SIM0505, excluding China, Hong Kong, Macau, and Taiwan which are retained by Simcere Zaiming Pharmaceutical Co., Ltd.

(Press release, NextCure, MAR 31, 2026, View Source [SID1234664100])