Investigational Drug
Zimberelimab (also known as AB122, GLS-010, WBP-3055) is a fully human IgG4 monoclonal antibody targeting PD-1, developed using the OmniRat transgenic platform. It has been evaluated as monotherapy and in combinations across multiple solid tumors and hematologic malignancies. In China, zimberelimab is approved for relapsed/refractory classical Hodgkin lymphoma (r/r cHL; 2021) and for PD-L1–positive recurrent/metastatic cervical cancer (2023); development continues globally where it remains investigational. (pubmed.ncbi.nlm.nih.gov)
Zimberelimab binds PD-1 with high affinity (KD ≈ 1.75×10⁻¹⁰ M), blocking PD‑L1/PD‑L2 interactions and restoring T‑cell activity. Preclinical studies demonstrated effective checkpoint blockade and antitumor activity in PD‑1 humanized mouse models. (pubmed.ncbi.nlm.nih.gov)
Classical Hodgkin lymphoma (r/r cHL; phase II, single arm, n=85): Objective response rate (ORR) 90.6% (95% CI 82.3–95.9); complete response (CR) 32.9%. Twelve‑month PFS and OS were 78% and 99%, respectively. (pubmed.ncbi.nlm.nih.gov)
Cervical cancer (recurrent/metastatic, PD‑L1–positive; phase II, single arm, n=105): ORR 27.6%; disease control rate 55.2%; median PFS 3.7 months; median OS 16.8 months; duration of response not reached at 16.9‑month median follow‑up. Results supported approval in China. (pubmed.ncbi.nlm.nih.gov)
Gastric cancer (AFP‑elevated; phase I, combination with lenvatinib + XELOX; n=9): ORR 33.3%; all patients achieved disease control; median PFS 7.67 months and OS 13.17 months in a small dose‑escalation cohort. (pmc.ncbi.nlm.nih.gov)
Esophageal cancer (first‑line; phase 1a/b, zimberelimab + futibatinib + FP chemotherapy; ASCO 2025 abstract): Confirmed ORR 58.5% (overall ORR 70.7%); disease control rate 92.7%; median PFS 4.9 months; data are preliminary. (ascopubs.org)
Non–small cell lung cancer (NSCLC; PD‑L1‑high): In randomized studies, adding domvanalimab (anti‑TIGIT) to zimberelimab improved outcomes versus zimberelimab alone (e.g., PFS improvement in ARC‑7; OS improvement in ARC‑10 Part 1), though detailed peer‑reviewed data are pending. A phase 3 ARC‑10 design comparing domvanalimab+zimberelimab to pembrolizumab has been described. (investors.gilead.com)
Across studies, zimberelimab’s safety profile is consistent with PD‑1 inhibitors. In r/r cHL, treatment‑related adverse events (TRAEs) occurred in 92.9%; grade ≥3 TRAEs in 28.2% (most common: hepatic lab abnormalities, hyperuricemia, neutropenia); one grade 5 AE (GI infection). (pubmed.ncbi.nlm.nih.gov)
In PD‑L1–positive recurrent/metastatic cervical cancer, any‑grade TRAEs occurred in 78.1% (most common: hypothyroidism 26.7%, anemia 19.0%); grade ≥3 TRAEs in 22.9% in a related analysis. (pubmed.ncbi.nlm.nih.gov)
In combinations, early‑phase studies reported manageable safety without new signals (e.g., lenvatinib+chemotherapy in AFP‑elevated gastric cancer; futibatinib+chemotherapy in esophageal cancer). (pmc.ncbi.nlm.nih.gov)
China approvals: r/r cHL (August 2021) and PD‑L1–positive recurrent/metastatic cervical cancer (September 2023). Outside China, zimberelimab is investigational. (gilead.com)
Partnerships: The antibody (GLS‑010) originated with Gloria Biosciences/WuXi Biologics and was licensed to Arcus Biosciences for development ex‑China. Ongoing programs include combinations with domvanalimab (anti‑TIGIT) and etrumadenant (A2a/A2b antagonist). (wuxibiologics.com)
Notes: Reported combination benefits in NSCLC (ARC‑7/ARC‑10) are from company communications and conference disclosures; peer‑reviewed publications are awaited for full details. (investors.gilead.com)
Last updated: Oct 2025
Found 7 active trials using this drug:
HealthScout AI summary: First-line study for adults with recurrent/metastatic, non-nasopharyngeal HNSCC (ECOG 0–1, measurable disease, no prior PD-1/TIGIT; prior curative-intent platinum allowed if relapse >6 months) comparing zimberelimab (anti–PD-1) plus carboplatin/paclitaxel with or without domvanalimab, an Fc-silent anti-TIGIT antibody that augments T-cell activity. Aims to determine whether adding anti-TIGIT to PD-1 blockade and platinum-taxane chemotherapy improves ORR and PFS.
ClinicalTrials.gov ID: NCT06727565
HealthScout AI summary: Eligible patients are adults with metastatic triple-negative breast cancer and measurable brain metastases who can undergo stereotactic radiosurgery; treatment consists of SRS followed by sacituzumab govitecan (an anti-Trop-2 antibody-drug conjugate) and zimberelimab (a PD-1 inhibitor immunotherapy). Prior taxane/anthracycline or SRS/FSRT therapy (if new lesions) is allowed; key exclusions are leptomeningeal disease, significant comorbidities, active autoimmune disease requiring immunosuppression, and prior topoisomerase I inhibitor use for brain metastases.
ClinicalTrials.gov ID: NCT06238921
HealthScout AI summary: Men with hormone-sensitive oligometastatic prostate adenocarcinoma (1–3 SBRT-amenable lesions; prior definitive therapy; testosterone >125 ng/dL; PSA 0.5–50; PSADT <15 months; ECOG 0–2) receive metastasis-directed SBRT plus adenosine-axis modulation with quemliclustat (CD73 inhibitor) and etrumadenant (A2A/A2B receptor antagonist) followed by PD-1 blockade with zimberelimab. Aims to improve biochemical and radiographic control versus historical SBRT alone while deferring ADT.
ClinicalTrials.gov ID: NCT05915442
HealthScout AI summary: Adults with metastatic pancreatic adenocarcinoma/squamous histology who have at least stable disease after 4–6 months of first‑line FOLFIRINOX are randomized to switch‑maintenance immunotherapy with domvanalimab (anti‑TIGIT) + zimberelimab (anti‑PD‑1) + APX005M/sotigalimab (CD40 agonist) versus continued maintenance FOLFIRI. Key exclusions include progression on FOLFIRINOX, prior checkpoint or CD40 therapy, significant autoimmune disease, active HBV/HCV/HIV, and germline BRCA1/2 mutations; crossover to the immunotherapy arm at progression is allowed.
ClinicalTrials.gov ID: NCT05419479
HealthScout AI summary: Adults with ECOG 0–1: dose escalation enrolls any advanced solid tumor lacking standard options; expansion enrolls histologically confirmed ccRCC. Treatments include the oral HIF-2α inhibitor casdatifan (AB521) as monotherapy or combined with cabozantinib or the anti–PD-1 antibody zimberelimab.
ClinicalTrials.gov ID: NCT05536141
HealthScout AI summary: This trial enrolls adults with newly diagnosed stage IV NSCLC without EGFR, ALK, ROS1, NTRK, BRAF, RET, or other actionable mutations, randomizing them to standard chemotherapy plus either pembrolizumab (PD-1 inhibitor), zimberelimab (PD-1 inhibitor), or zimberelimab combined with domvanalimab (TIGIT inhibitor) as first-line therapy. Eligible patients must have good performance status (ECOG 0-1) and no prior immune checkpoint inhibitor exposure.
ClinicalTrials.gov ID: NCT05502237
HealthScout AI summary: Adults with cutaneous melanoma (non-mucosal/ocular/acral) that has progressed on prior anti–PD-1/L1 therapy receive zimberelimab (anti–PD-1) plus domvanalimab (Fc-silent anti-TIGIT) every 3 weeks, with continuation for disease control up to 24 months. Prior CTLA-4 and, if BRAF-mutant, BRAF/MEK therapy allowed; requires ECOG 0–1, excludes active autoimmune disease, prior TIGIT therapy, and uncontrolled/active CNS disease (treated, stable brain mets allowed).
ClinicalTrials.gov ID: NCT05130177