About this trial
There're 2 parts in this interventional study:
1. The goal of phase Ib trial is to evaluate the safety and tolerability of AK130 in combination with AK112 therapy for the purpose of observing the incidence of dose limit toxicity (DLT) as well as the confirmation of maximum tolerable dose (MTD) in the treatment of advanced biliary tract cancer (BTC), so as to determine the recommended phase 2 dose (RP2D) in the second part of the trial. 2. The goal of phase II trial is to evaluate the safety and efficacy of AK112 in combination with AK130 therapy or monotherapy in the treatment of advanced BTC.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Be able and willing to provide written informed consent.
Have a life expectancy of at least 3 months.
Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
Subjects with histologically and/or cytologically confirmed advanced or metastatic biliary tract malignancies (including only intrahepatic cholangiocarcinoma, extrahepatic cholangiocarcinoma, and gallbladder carcinoma; excluding ampullary carcinoma), who have experienced treatment failure following prior first-line systemic therapy.
Disqualifiers
Except for BTC, the subjects had other malignant tumors within the 3 years prior to enrollment. Subjects with other malignant tumors that have been cured through local treatment are not excluded, such as basal or cutaneous squamous cell carcinoma, superficial bladder cancer, cervical or breast cancer in situ.
There is central nervous system (CNS) metastasis, spinal cord compression, or meningeal metastasis.
There are pleural effusion, pericardial effusion, or ascites with clinical symptoms or requiring repeated drainage.
Prior administration of any immunotherapy targeting immune mechanisms other than PD-1/PD-L1 inhibitors.
Trial design
Parallel
Treatments tested in this trial
AK112
DrugFollowing a predefined dose and date.
AK130
DrugFollowing a predefined dose and date.
Treatment groups
Trial outcomes
Primary outcomes
Number of subjects with dose limiting toxicities (DLTs)
DLTs will be assessed during the first three weeks of treatment. DLTs are defined as toxicities that meet pre-defined severity criteria, and assessed as having a suspected relationship to study drug, and unrelated to disease, disease progression, inter-current illness, or concomitant medications that occurs within the DLT observation period.
Number of subjects with adverse events (AEs)
AE refers to any untoward medical occurrence or deterioration of existing medical event after the subject signed the ICF, whether or not considered related to the study treatment.
Objective Response Rate (ORR) (Phase II)
ORR is defined as the proportion of subjects with BOR response of CR or PR (based on RECIST Version 1.1).
Secondary outcomes
Objective Response Rate (ORR) (Phase Ib)
ORR is defined as the proportion of subjects with BOR response of CR or PR (based on RECIST Version 1.1).
Disease control rate (DCR)
DCR is defined as the proportion of subjects with response of CR, PR and SD (based on RECIST Version 1.1).
Duration of Response (DoR)
The time from first documented evidence of CR or PR until time of first documented disease progression.
Time to response (TTR)
Time between date of start of treatment until first documented response (CR or PR).