Zai Lab Limited develops and commercializes therapies to treat oncology, autoimmune disorders, infectious diseases, and neuroscience primarily in Mainland China and Hong Kong.

Its commercial products include Zejula, a once-daily small-molecule poly polymerase 1/2 inhibitor; Optune, a device that delivers tumor treating fields; NUZYRA for acute bacterial skin and skin structure infections, and community acquired bacterial pneumonia; and Qinlock to treat gastrointestinal stromal tumors.

The company also develops Odronextamab to treat follicular lymphoma, diffuse large B-cell lymphoma, and other B-celllymphomas; Repotrectinib, a tyrosine kinase inhibitor (TKI) to target ROS1 and TRK A/B/C in TKI-naïve- or -pretreated cancer patients; Margetuximab for the treatment of breast and gastroesophageal cancers; Tisotumab vedotin, an antibody drug conjugate; Adagrasib for treating KRAS-G12C-mutated NSCLC, colorectal cancer, pancreatic cancer, and other solid tumors; and Bemarituzumab to treat gastric and gastroesophageal junction cancer.

In addition, it develops Zipalertinib for the treatment of patients with EGFR exon 20 insertion NSCLC; Elzovantinib, an orally bioavailable multi-targeted kinase inhibitor; ZL-2313, an investigational oral EGFR inhibitor; ZL-1211, a humanized IgG1 monoclonal antibody that targets CLDN18.2; ZL-1218 is humanized IgG1 monoclonal antibody to induce potent antibody-dependent cellular cytotoxicity activity that enables NK cell-mediated killing of CCR8-expressing T-regs; Efgartigimod to reduce disease-causing immunoglobulin G antibodies; ZL-1102, a human nanobody targeting interleukin- 17A; Sulbactam/durlobactam for the treatment of serious infections caused by Acinetobacter; and KarXT for the treatment of psychiatric and neurological conditions.

The company was incorporated in 2013 and is headquartered in Shanghai, China.