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).

Study Overview

• Status: Active, not recruiting
• Conditions: Metastatic Triple-negative Breast Cancer; Locally Advanced Triple-negative Breast Cancer
• Intervention / Treatment: Drug: Nab paclitaxel; Drug: paclitaxel; Drug: AK117; Drug: AK112

• Study Type: Interventional
• Enrollment (Estimated): 120
• Phase: Phase 2

Contacts and Locations

Study Locations

• China
  • Changsha, China
    • Hunan Cancer Hospital
  • Xiangyang, China
    • Xiangyang Central Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 75 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

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

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: cohort1(AK117 +AK112 +Nab-Paclitaxel/ Paclitaxel); Subjects receive AK117 and AK112 Plus Nab-Paclitaxel/ Paclitaxel until disease progression or unacceptable toxicity.	Drug: Nab paclitaxel; Nab-Paclitaxel at a starting dose of 100 milligrams per square meter via IV infusion on Days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.; Drug: paclitaxel; Paclitaxel at a starting dose of 90 milligrams per square meter via IV infusion on Days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.; Drug: AK117; Intravenous (IV) infusion; Drug: AK112; Intravenous (IV) infusion
Experimental: cohort2(AK117 +Nab-Paclitaxel/ Paclitaxel); Subjects receive AK117 Plus Nab-Paclitaxel/ Paclitaxel until disease progression or unacceptable toxicity.	Drug: Nab paclitaxel; Nab-Paclitaxel at a starting dose of 100 milligrams per square meter via IV infusion on Days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.; Drug: paclitaxel; Paclitaxel at a starting dose of 90 milligrams per square meter via IV infusion on Days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.; Drug: AK117; Intravenous (IV) infusion
Experimental: cohort3(AK112 +Nab-Paclitaxel/ Paclitaxel); Subjects receive AK112 Plus Nab-Paclitaxel/ Paclitaxel until disease progression or unacceptable toxicity.	Drug: Nab paclitaxel; Nab-Paclitaxel at a starting dose of 100 milligrams per square meter via IV infusion on Days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.; Drug: paclitaxel; Paclitaxel at a starting dose of 90 milligrams per square meter via IV infusion on Days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.; Drug: AK112; Intravenous (IV) infusion

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of participants with adverse events (AEs)	An AE is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment.	Up to approximately 2 years
Objective response rates (ORR)	ORR is the proportion of subjects with complete response(CR) or partial response(PR) , based on RECIST v1.1	Up to approximately 2 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Disease control rate (DCR)	Disease control rate (DCR) is defined as the proportion of subjects with CR, PR, or stable disease(SD) based on RECIST V1.1	Up to approximately 2 years
Time to response (TTR)	TTR is defined for participants who had an objective response as the time from the start of treatment to the first occurrence of a documented unconfirmed response (CR or PR) .	Up to approximately 2 years
Progression-free survival (PFS)	PFS is defined as the time from the start of treatment till the first documentation of disease progression (per RECIST v1.1 criteria) assessed by the investigator or death due to any cause (whichever occurs first).	Up to approximately 2 years
Overall survival (OS)	Overall survival is defined as the time from the start of treatment until death due to any cause.	Up to approximately 2 years
Duration of response (DOR)	DOR is defined for participants who had an objective response as the time from the first occurrence of a documented unconfirmed response (CR or PR) to the date of disease progression per RECIST v1.1 or death from any cause, whichever occurred first	Up to approximately 2 years

Collaborators and Investigators

• Sponsor: Akeso

Study record dates

Study Major Dates

• Study Start (Actual): March 23, 2022
• Primary Completion (Estimated): December 30, 2026
• Study Completion (Estimated): June 30, 2027

Study Registration Dates

• First Submitted: January 27, 2022
• First Submitted That Met QC Criteria: January 27, 2022
• First Posted (Actual): February 7, 2022

Study Record Updates

• Last Update Posted (Actual): March 16, 2026
• Last Update Submitted That Met QC Criteria: March 13, 2026
• Last Verified: March 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Skin Diseases; Breast Diseases; Breast Neoplasms; Skin and Connective Tissue Diseases; Triple Negative Breast Neoplasms; Organic Chemicals; Hydrocarbons; Cycloparaffins; Hydrocarbons, Alicyclic; Hydrocarbons, Cyclic; Terpenes; Taxoids; Cyclodecanes; Diterpenes; Health Care Economics and Organizations; Economics; Paclitaxel; Taxes
• Other Study ID Numbers: AK117-203

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No