Advanced Gynecological Malignancies

This is an open-label, multicenter, Phase II clinical study to evaluate the efficacy and safety of SKB518 as monotherapy or combination therapy in patients with advanced gynecological malignancies. This study will include 5 cohorts: SKB518 as monotherapy in advanced ovarian cancer; SKB518 as monotherapy in advanced cervical cancer and endometrial cancer; SKB518 in combination with Carboplatin in advanced ovarian cancer; SKB518 in combination with Carboplatin and Bevacizumab in advanced ovarian cancer; and SKB518 in combination with Bevacizumab in advanced ovarian cancer. Study hypothesis: SKB518 will show meaningful clinical activity and a favorable risk benefit profile in gynecological malignancies.

This study is a single-arm, open-label, multicenter Phase IIa trial designed to evaluate the efficacy, safety, and pharmacokinetic profile of BRY812 for Injection in patients with LIV-1-positive advanced gynecological malignancies. The study comprises two cohorts. For Cohort 1 (ovarian cancer), a Simon's two-stage design is adopted. In the first stage, 13 evaluable subjects will be enrolled. If fewer than 3 subjects achieve an objective response among these 13, enrollment in this cohort will be terminated. Otherwise, the cohort will proceed to the second stage, and additional 23 evaluable subjects will be enrolled, bringing the total to 36. If at least 10 out of the 36 evaluable subjects achieve an objective response, the cohort will be considered worthy of further investigation. Cohort 2 (endometrial cancer and ovarian clear cell carcinoma) plans to enroll approximately 20 subjects in a single stage.