About this episode
In this JCO Article Insights episode, Dr. Ece Cal interviews Dr. Martin Wermke, author of the JCO article, "Phase I Dose-Escalation Results for the Delta-Like Ligand 3/CD3 IgG-Like T-Cell Engager Obrixtamig (BI 764532) in Patients With Delta-Like Ligand 3+ Small Cell Lung Cancer or Neuroendocrine Carcinomas." TRANSCRIPT The disclosures for guests on this podcast can be found in the transcript. Dr. Ece Cali: Welcome to this episode of JCO Article Insights. This is Dr. Ece Cali, JCO editorial fellow, and today I am joined by Dr. Martin Wermke, Professor for Experimental Cancer Therapy at Dresden University of Technology, to discuss the manuscript "Phase 1 Dose-Escalation Results for the Delta-Like Ligand 3/CD3 IgG-like T-Cell Engager Obrixtamig in Patients with DLL3+ Small Cell Lung Cancer or Neuroendocrine Carcinomas." Obrixtamig is a bispecific T-cell engager that binds to DLL3 on tumor cells and CD3 on T-cells. This manuscript presents the phase 1A dose escalation results of Obrixtamig in patients with DLL3+ small cell lung cancer and neuroendocrine carcinomas. In this study, 168 patients were treated with Obrixtamig across four different dosing regimens. 49% of the patients had small cell lung cancer, 42% had extrapulmonary neuroendocrine carcinoma, and 8% had large cell neuroendocrine carcinoma of the lung. Patients received a median of two prior lines of therapy. 33% of the patients had brain metastases at baseline. Of note, this trial did not mandate baseline brain imaging. Maximum tolerated dose was not reached. 88% of the patients experienced a treatment-related adverse event, however, only 3.6% of the patients had to discontinue treatment due to treatment-related AEs, and dose reduction due to treatment-related AEs was documented in 2.4% of the patient population. Similar to the other DLL3-targeted bi-therapies, the most common adverse events included CRS in 57%, dysgeusia in 23%, and pyrexia in 21% of the patients. CRS events were mostly mild. They occurred more frequently in the first two to three doses. 9% of the patients experienced ICANS, of which 3% were graded as Grade 3 or higher. And let's review the efficacy results
