Mabwell's Novel Nectin-4 ADC Approved for Phase II Clinical Trial in Treating Triple-Negative Breast Cancer

16 July 2024 | Tuesday | News


Innovative Therapy 9MW2821 to Be Tested Alone and in Combination with PD-1 Inhibitor for Efficacy and Safety in Advanced TNBC Patients
Image Source : Public Domain

Image Source : Public Domain

Mabwell (688062.SH), an innovative biopharmaceutical company with entire industry chain, announced its novel Nectin-4 targeting ADC (R&D code: 9MW2821) has been approved by the NMPA to enter Phase II clinical trial as monotherapy or in combination with a PD-1 inhibitor for the treatment of triple-negative breast cancer (TNBC).

The Phase II clinical trial recently approved aims to evaluate the efficacy and safety of 9MW2821 as monotherapy or in combination with a PD-1 inhibitor in patients with locally advanced or metastatic TNBC. The study includes two cohorts: Cohort A will enroll patients with locally advanced or metastatic TNBC who have previously received taxane/anthracycline-based chemotherapy and topoisomerase inhibitor based antibody-drug conjugate treatment, and will receive 9MW2821 monotherapy; Cohort B will enroll patients with locally advanced or metastatic TNBC who have not previously received systemic therapy, and will receive a combination treatment of 9MW2821 and a PD-1 inhibitor.

Clinical results previously presented at the 2024 ASCO Annual Meeting showed that among the 20 patients with locally advanced or metastatic TNBC treated by 9MW2821 and evaluable for efficacy assessment, the objective response rate (ORR) and disease control rate (DCR) were 50.0% and 80.0% respectively. The median progression-free survival (mPFS) was 5.9 months, and the median overall survival (mOS) was not yet reached, with one patient achieved complete response (CR) and had been in CR for 20 months and is currently sustained to be CR. Additionally, 9MW2821 has recently been granted Fast Track Designation (FTD) by the U.S. Food and Drug Administration (FDA) for the treatment of locally advanced or metastatic Nectin-4 positive TNBC.

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