Approval Probability
TA Base Rate
Adjusted LOA
ML Risk
Zimberelimab · 5 trials · 7 indications
The primary endpoint is change in the number of intratumoral CD8+ T-cells at time of surgery between treatment arm(s) compared to the SBRT + zimberelimab arm (Control Arm B). To obtain CD8+ T-cell count, simple immunohistochemistry (IHC) will be used to quantitate CD8+ T-cells. A designated gastrointestinal (GI) pathologist will review each hematoxylin and eosin (H\&E) stained serial section and IHC slide to oversee the process. Representative areas within the slide will be used for cell counts.
The proportion of patients with Complete Response (CR) + Partial Response (PR), per RECIST v1.1. Complete Response (CR) is defined as disappearance of all target lesions; disappearance of all non-target lesions and normalization of tumor marker level. Partial Response (PR) is defined as at least a 30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD.
Adverse events will be listed individually by patient and treatment group. The number of patients experiencing each adverse event will be summarized by organ and grade. The number and percentage of patients with adverse events in the different categories will be summarized by treatment group.
| Arm | Type | Description |
|---|---|---|
| Arm A: Safety run-in | EXPERIMENTAL | Prior to resection: SBRT 40 Gy over 5 fractions, zimberelimab (AB122) 240 mg intravenously (IV) every 2 weeks for 7 weeks (4 doses), quemliclustat (AB680) 100 mg IV every 2 weeks for 7 weeks (4 doses) and etrumadenant (AB928) 150 mg PO daily for 7 weeks. After resection: mFOLFIRINOX (4 cycles) |
| Arm B: SBRT with Zimberelimab (AB122) Alone (Control Arm) | ACTIVE_COMPARATOR | Prior to resection: SBRT 40 Gy over 5 fractions, 240 mg IV zimberelimab (AB122) every 2 weeks for 7 weeks (4 doses) prior to surgery. After resection: mFOLFIRINOX (4 cycles) |
| Arm C: SBRT, Zimberelimab with quemliclustat (AB680) | EXPERIMENTAL | Prior to resection: SBRT 40 Gy over 5 fractions, 240 mg IV zimberelimab (AB122) every 2 weeks for 7 weeks (4 doses) prior to surgery in combination with quemliclustat IV at the recommended therapeutic dose (RTD)every 2 weeks for 7 weeks (4 doses) prior to surgery. After resection: mFOLFIRINOX (4 cycles) |
| Arm D: SBRT, Zimberelimab with AB680 and Etrumadenant (AB928) | EXPERIMENTAL | Prior to resection: SBRT 40 Gy over 5 fractions, 240 mg IV zimberelimab (AB122) every 2 weeks for 7 weeks (4 doses) prior to surgery in combination with quemliclustat IV at the RTD every 2 weeks for 7 weeks (4 doses) and etrumadenant (AB928) PO at the RTD daily for 7 weeks prior to surgery. After resection: mFOLFIRINOX (4 cycles) |
| Zimberelimab plus Domvanalimab | EXPERIMENTAL | Treatment Phase 1: Zimberelimab, 360mg, IV, every 3 weeks for 3 cycles. Domvanalimab, 15mg/kg, IV, every 3 weeks for 3 cycles. After 3 cycles, scans will be performed. If it is determined that the cancer is stable or responding patients will continue with Treatment Phase 2. Treatment Phase 2: Zimberelimab, 360mg, IV, every 3 weeks for 3 cycles. Domvanalimab, 15mg/kg, IV, every 3 weeks, for up to 24 months. |
| Cohort A: Zimberelimab + Domvanalimab + Etrumadenant | EXPERIMENTAL | * Patients will be treated on 21-day cycles with 360 mg zimberelimab intravenously on Day 1, 15 mg/kg domvanalimab intravenously on Day 1, and 150 mg etrumadenant orally daily on Days 1 to 21. * Cohort A participants are those that have PD-L1 1-49% |
| Cohort B: Zimberelimab + Domvanalimab + Etrumadenant | EXPERIMENTAL | * Patients will be treated on 21-day cycles with 360 mg zimberelimab intravenously on Day 1, 15 mg/kg domvanalimab intravenously on Day 1, and 150 mg etrumadenant orally daily on Days 1 to 21. * Cohort B participants are those that have PD-L1 ≥ 50%. |
| TMB-H | EXPERIMENTAL | Participants with a tumor biomarker status of TMB-H will receive zimberelimab every 3 weeks. |
| Strata Immune Signature positive | EXPERIMENTAL | Participants with a tumor biomarker status Strata Immune Signature positive will receive zimberelimab every 3 weeks. |
| Zimberelimab (AB 122) + Domvanalimab (AB 154) Safety Cohort (Cohort A) | EXPERIMENTAL | Eligible patients will be sequentially enrolled to receive intravenous domvanalimab (AB 154) combined with zimberelimab (AB 122) (N=6). domvanalimab (AB 154) will be given at a dose of 10 mg/kg and zimberelimab (AB 122) will be given at a dose of 240 mg (flat). |
| Domvanalimab (AB 154) Surgical Cohort (Cohort B1) | EXPERIMENTAL | Candidates for surgical resection will be enrolled and initiate study treatment approximately two weeks prior to the resection. The pre-surgical dose (neoadjuvant treatment) will be double-blinded. B1 (N=10): domvanalimab (AB 154) single agent (10 mg/kg) + placebo Following surgery, all patients will initiate treatment with the combination of domvanalimab (AB 154) and zimberelimab (AB 122). Domvanalimab (AB 154) will be given at a dose of 10 mg/kg and zimberelimab (AB 122) will be given at a dose of 240 mg (flat). |
| Zimberelimab (AB 122) Surgical Cohort (Cohort B2) | EXPERIMENTAL | Candidates for surgical resection will be enrolled and initiate study treatment approximately two weeks prior to the resection. The pre-surgical dose (neoadjuvant treatment) will be double-blinded. B2 (N=10): zimberelimab (AB 122) single agent (240 mg) + placebo Following surgery, all patients will initiate treatment with the combination of domvanalimab (AB 154) and zimberelimab (AB 122). Domvanalimab (AB 154) will be given at a dose of 10 mg/kg and zimberelimab (AB 122) will be given at a dose of 240 mg (flat). |
| Domvanalimab (AB 154) + Zimberelimab (AB 122) Surgical Cohort (Cohort B3) | EXPERIMENTAL | Candidates for surgical resection will be enrolled and initiate study treatment approximately two weeks prior to the resection. The pre-surgical dose (neoadjuvant treatment) will be double-blinded. B3 (N=10): domvanalimab (AB 154, 10 mg/kg) + zimberelimab (AB 122, 240 mg) Following surgery, all patients will initiate treatment with the combination of domvanalimab (AB 154) and zimberelimab (AB 122). Domvanalimab (AB 154) will be given at a dose of 10 mg/kg and zimberelimab (AB 122) will be given at a dose of 240 mg (flat). |
| Placebo Surgical Cohort (Cohort B4) | EXPERIMENTAL | Candidates for surgical resection will be enrolled and initiate study treatment approximately two weeks prior to the resection. The pre-surgical dose (neoadjuvant treatment) will be double-blinded. B4 (N=10): Two placebo infusions Following surgery, all patients will initiate treatment with the combination of domvanalimab (AB 154) and zimberelimab (AB 122). Domvanalimab (AB 154) will be given at a dose of 10 mg/kg and zimberelimab (AB 122) will be given at a dose of 240 mg (flat). |
| Name | Type | Description |
|---|---|---|
| Stereotactic body radiotherapy (SBRT) | RADIATION | SBRT 40 gray (Gy) over 5 fractions |
| Zimberelimab | DRUG | 240 mg intravenously (IV) |
| Quemliclustat | DRUG | 100 mg IV |
| Etrumadenant | DRUG | 150 mg orally |
| Modified FOLFIRINOX | DRUG | * Oxaliplatin 85 mg per square meter IV * Irinotecan 150 mg per square meter IV * Leucovorin 400 mg per square meter IV * Fluorouracil 2400 mg per square meter IV * Pegfilgrastim injector kit (6mg subcutaneous) |
| Domvanalimab | DRUG | Domvanalimab is a humanized immunoglobulin G1 (IgG1) mAb that targets immune checkpoint TIGIT. |
| Placebo | DRUG | Saline placebo comparator for pre-surgery treatment in cohort B4 |
Inclusion Criteria: * Histological or pathological confirmation of pancreatic adenocarcinoma Cytologic or histologic proof of pancreatic ductal adenocarcinoma (PDAC) needs to be verified by the treating institution pathologist. A pathological report from non-treating institutions is sufficient to c...
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Zimberelimab is an investigational antibody being studied for advanced solid tumors, glioblastoma, melanoma, non-small cell lung cancer, and pancreatic ductal adenocarcinoma. It is in clinical development for these oncology indications.
Zimberelimab is a monoclonal antibody, indicated by its -mab suffix. Its specific molecular target is not disclosed in available information.
Zimberelimab is developed by Arcus Biosciences, Inc., a biopharmaceutical company traded on the NYSE under the ticker RCUS.
Zimberelimab is in Phase 1 clinical development, with additional early Phase 1 and Phase 2 trials ongoing. It is investigational and not yet approved by regulatory authorities.
Zimberelimab is being studied in several trials, including NCT04087018 for advanced solid tumors, NCT04656535 for glioblastoma, NCT05130177 for melanoma, and NCT06048484 for pancreatic ductal adenocarcinoma.
Yes, Zimberelimab is also known as AB122. Clinical trial titles refer to it as AB122, and it is being evaluated in combination with other agents like domvanalimab.