A Study of AK117/AK112 in Metastatic Triple-Negative Breast Cancer

A Phase II Study of AK117/AK112 in Combination With Chemotherapy for Patients With Previously Untreated Metastatic Triple-Negative Breast Cancer

This trial is a Phase II study. The purpose of this study is to evaluate the efficacy, safety, and pharmacokinetics of AK117/AK112 administered with chemotherapy in participants with locally advanced or metastatic triple-negative breast cancer (TNBC) who have not received prior systemic therapy for metastatic breast cancer (mBC).

Inclusion Criteria:

• Metastatic or locally advanced, histologically documented TNBC characterized by absence of human epidermal growth factor 2 (HER2), estrogen receptor (ER), and progesterone receptor (PR) expression
• No prior chemotherapy or targeted systemic therapy for inoperable locally advanced or metastatic TNBC
• Eligible for taxane monotherapy
• A representative formalin-fixed, paraffin-embedded tumor specimen in paraffin blocks, or at least 5 unstained slides with an associated pathology report documenting ER, PR, and HER2 negativity.
• Eastern Cooperative Oncology Group performance status of 0 or 1
• Measurable disease as defined by RECIST v1.1
• Adequate hematologic and end-organ function

Exclusion Criteria:

• Known central nervous system (CNS) disease, except for asymptomatic CNS metastases
• Leptomeningeal disease
• Pregnancy or lactation
• History of autoimmune disease
• Prior allogeneic stem cell or solid organ transplantation
• Positive test for human immunodeficiency virus
• Active hepatitis B or hepatitis C
• Receipt of a live, attenuated vaccine within 30 days prior to randomization, during treatment