An Open, Multicenter Phase Ib/II Clinical Study on the Efficacy and Safety of AK119 and AK112, Either in Combination or Not, With Chemotherapy, and AK112 Monotherapy in pMMR/MSS CRC

Akeso1 个研究点分布在 1 个国家目标入组 170 人开始时间: 2023年5月8日最近更新: 2026年3月4日

适应症

干预措施

试验速览

阶段: 1 期
状态: 进行中（未招募）
发起方
入组人数: 170
试验地点: 1
主要终点: Objective response rate (ORR)

研究概览研究设计入排标准研究组 & 干预措施结局指标研究者研究点记录与标识符相似试验

研究概览

简要总结

This is an open label, multicenter Phase Ib/II clinical study on the efficacy and safety of AK119 and AK112 in combination with or without chemotherapy, and AK112 monotherapy in pMMR/MSS CRC

详细描述

This study is an open, multicenter, Ib/II phase clinical trial conducted in China. The research plan is divided into 5 queues. A total of 130-170 subjects were enrolled. Subjects who meet the research criteria will receive treatment with AK119 and AK112 in combination or without chemotherapy, as well as AK112 monotherapy, every two weeks according to the protocol. The research on the first and second cohorts will be conducted first, and at least two lines of microsatellite stabilized colorectal cancer subjects who have failed standard treatment will be enrolled; Subsequently, a third cohort was conducted, which included microsatellite stabilized colorectal cancer subjects who had failed at least two lines of standard treatment; After preliminary confirmation of the safety and efficacy of AK119 combined with AK112 in the first and second cohorts, and determination of the recommended dose of AK119 for subsequent combination chemotherapy, the study of AK119 and AK112 combined chemotherapy in the fourth and fifth cohorts will be conducted. The fourth and fifth cohorts will include participants with advanced first-line microsatellite stable colorectal cancer who have not received systemic treatment.

研究设计

研究类型: Interventional
分配方式: Non Randomized
干预模型: Sequential
主要目的: Treatment
盲法: None

入排标准

年龄范围: 18 Years 至 —（Adult, Older Adult）
性别: All
接受健康志愿者: 否

入选标准

•Be able to understand and voluntarily sign the written informed consent, which must be signed before the specified research procedure required by the research is implemented.
•Age ≥ 18 when signing the informed consent form (ICF), both male and female。
•Microsatellite stable colorectal cancer confirmed by histopathology; Microsatellite stability was defined as the expression of four common MMR proteins (MLH1, MSH2, MSH6 and PMS2) detected by immunohistochemistry, and all four proteins were positive for pMMR. Or PCR method was used to detect sites (BAT25, BAT26, D5S346, D2S123 and D17S250), and the detection results showed that the stability was microsatellite stability or microsatellite low degree instability.
•The first and second cohorts: recurrent or metastatic colorectal cancer that has failed to undergo at least the second-line standard treatment in the past; The chemotherapy of at least one of the treatment lines is the combination chemotherapy of at least two cytotoxic drugs based on platinum or irinotecan; Definition of treatment failure: disease progression occurs during or after treatment. All patients who change the treatment plan due to drug intolerance are not considered as treatment failure; For subjects who have received induction chemotherapy, concurrent radiotherapy and chemotherapy or adjuvant chemotherapy in the past, if relapse/metastasis occurs within 6 months after the last treatment, the original treatment plan is defined as the first-line treatment plan for the subject.
•The third and fourth cohorts: for patients with advanced colorectal cancer who have not undergone systematic treatment, the recurrence time should be at least 6 months from the end of the last treatment for those who have previously received induction chemotherapy, concurrent radiotherapy and chemotherapy or adjuvant/neoadjuvant chemotherapy.
•Agree to provide archived or freshly obtained tumor tissue samples within 2 years before the first administration (preferably newly obtained tumor tissue samples) About 20 unstained FFPE pathological sections (if the sample size is not enough, only 10 unstained FFPE pathological sections can be provided with the approval of medical inspectors FFPE pathological section).
•According to RECIST v1.1 standard, subjects have at least one measurable target lesion; The focus that has received radiotherapy is not selected as the target lesion, unless the radiotherapy focus is the only measurable focus and the progress is determined according to the imaging, it can be considered as the target lesion.
•The Eastern Cancer Cooperation Organization (ECOG) physical state score is 0 or
•The expected survival period is ≥ 3 months.

排除标准

•Pathological examination confirmed other pathological types, such as squamous cell carcinoma, sarcoma or undifferentiated carcinoma, gastrointestinal stromal tumor, etc.
•Palliative local treatment for non-target lesions within 2 weeks before the first administration; Have received systemic non-specific immunomodulation therapy (such as interleukin, interferon, thymosin, etc.) within 2 weeks before the first administration; Received Chinese herbal medicine or traditional Chinese patent medicines and simple preparations with anti-tumor indications within 2 weeks before the first administration。
•Had been treated with anti-CD73 inhibitors, immune checkpoint inhibitors (such as anti-PD-1 antibody, anti-PD-L1 antibody, anti-CTLA-4 antibody, etc.), immune checkpoint agonists (such as antibodies against ICOS, CD40, CD137, GITR, OX40 targets, etc.), immune cell therapy (such as CAR-T) and other therapies aimed at tumor immune mechanism.
•There is a history of gastrointestinal perforation and fistula within 6 months before the first administration. If the perforation or fistula has been removed or repaired, and the researcher judges that the disease has recovered or alleviated, it can be admitted into the group.
•Active or inactive Inflammatory bowel disease (such as Crohn's disease or ulcerative colitis) previously recorded. Inability to swallow, malabsorption syndrome, or uncontrollable nausea, vomiting, diarrhea or other gastrointestinal diseases that seriously affect the use and absorption of drugs.
•Except for the tumor that the subject had at the time of enrollment, there was active malignant tumor in the previous five years. However, the tumors participating in the study and cured local tumors are excluded, such as skin basal cell carcinoma, skin squamous cell carcinoma, superficial bladder cancer, cervical carcinoma in situ, breast carcinoma in situ, localized prostate cancer, etc.
•At the same time, another interventional clinical study was enrolled.
•Receive the last systemic anti-tumor treatment within 3 weeks before the first administration; Received small molecular TKI treatment within 2 weeks before the first administration

研究组 & 干预措施

AK119 20mg/kg+ AK112 20mg/kg

Experimental

Subjects will receive AK119 plus AK112 via intravenously (IV) Q2W, up to 2 years

干预措施: AK119 (Drug)

AK119 20mg/kg+ AK112 20mg/kg

Experimental

Subjects will receive AK119 plus AK112 via intravenously (IV) Q2W, up to 2 years

干预措施: AK112 (Drug)

AK119 40mg/kg+ AK112 20mg/kg

Experimental

Subjects will receive AK119 plus AK112 via intravenously (IV) Q2W, up to 2 years

干预措施: AK119 (Drug)

AK119 40mg/kg+ AK112 20mg/kg

Experimental

Subjects will receive AK119 plus AK112 via intravenously (IV) Q2W, up to 2 years

干预措施: AK112 (Drug)