AbbVie and partner RemeGen reported phase 1b data showing a 90.0% objective response rate for ABBV-1480 (RC148), an investigational programmed cell death protein 1 (PD-1)/vascular endothelial growth factor (VEGF) bispecific antibody, combined with platinum-based chemotherapy as a first-line treatment for squamous non-small cell lung cancer (NSCLC), the company announced August 21, 2026 ahead of presentations at the 2026 World Conference on Lung Cancer (WCLC).¹ At the recommended phase 3 dose of 10 mg/kg, the same combination produced a 75.9% objective response rate in non-squamous NSCLC.¹
Key facts
- Drugs: ABBV-1480/RC148, telisotuzumab adizutecan (Temab-A), ABBV-706 (AbbVie)
- Drug classes: PD-1/VEGF bispecific antibody; c-Met-targeted ADC; SEZ6-targeted ADC
- Indications: Non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC)
- Results: ABBV-1480 achieved a 90% response rate in frontline squamous NSCLC; ABBV-706 showed an 82% response rate in relapsed/refractory SCLC
- Safety: No severe bleeding with ABBV-1480; manageable toxicity profile for ABBV-706
- Biomarker insight: SEZ6 is expressed in the large majority of SCLC tumors
- Regulatory status: All 3 therapies remain investigational
- Geography: Global clinical trial programs
"Our strategy in lung cancer is focused on building a complementary pipeline that brings together next-generation immunotherapies and targeted antibody-drug conjugates with the potential to address different aspects of tumor biology," said Daejin Abidoye, MD, vice president and therapeutic area head of oncology, solid tumor and hematology, AbbVie, in a company press release.¹
What did the ABBV-1480 data show?
In the phase 1b trial, ABBV-1480 combined with platinum-based chemotherapy produced an objective response rate of 90.0% in squamous NSCLC (27 of 30 patients) and 75.9% in non-squamous NSCLC (22 of 29 patients) at the 10 mg/kg dose identified as the recommended phase 3 dose.¹,² The most common treatment-related adverse events were decreases in white blood cell, neutrophil, and platelet counts, along with anemia; no grade 3 or higher hemorrhages occurred with the 10 mg/kg combinations.¹ AbbVie said the safety profile supports ongoing phase 3 development, and the company holds exclusive rights from RemeGen to develop, manufacture, and commercialize ABBV-1480 outside Greater China.¹
What updates were shared on telisotuzumab adizutecan (Temab-A)?
AbbVie initiated a phase 1b/2 trial (M24-536; NCT06772623) evaluating a platinum-free combination of Temab-A, an investigational c-Met-directed antibody-drug conjugate paired with a topoisomerase 1 inhibitor payload, and a PD-1 inhibitor as a potential first-line treatment for advanced non-squamous NSCLC, building on earlier activity observed in heavily pretreated patients. The study includes analyses of c-Met and programmed cell death ligand 1 expression intended to identify patients most likely to benefit. Temab-A is also being studied in epidermal growth factor receptor-mutated NSCLC as monotherapy or combined with osimertinib (NCT07155187).¹
What data were revealed about ABBV-706 in SCLC?
ABBV-706, an investigational SEZ6-targeted antibody-drug conjugate, previously demonstrated an objective response rate of 82% in 17 patients with relapsed or refractory small cell lung cancer (SCLC) following platinum-based chemotherapy.¹ In a phase 1 trial, 240 patients received ABBV-706 monotherapy, including 124 with relapsed or refractory SCLC.¹,³ The most common gastrointestinal adverse events were nausea (35.8%), vomiting (17.5%), and diarrhea (10.8%), mostly low grade, while grade 3 or higher treatment-related pneumonitis or interstitial lung disease occurred in 1.7% of patients and serious treatment-related adverse events occurred in 12.5% of patients; hematologic toxicities, including anemia, neutropenia, and thrombocytopenia, were also among the most common treatment-related adverse events.¹ Real-world research found SEZ6 is expressed in 91% of SCLC patients overall and in more than 96% of patients with brain or liver metastases.¹ ABBV-706 is being evaluated in a phase 3 monotherapy study (NCT07365241) and a phase 2 study combined with atezolizumab (NCT07155174).
What are the limitations?
These are early-phase, uncontrolled response-rate data without a comparator arm, and cross-trial comparisons should be interpreted cautiously. Telisotuzumab adizutecan and ABBV-706 remain investigational and are not approved by any health authority.
References
- AbbVie. AbbVie to present new data at WCLC 2026 showcasing innovation across lung cancer pipeline. Press release. Published August 21, 2026. Accessed August 21, 2026. https://news.abbvie.com/2026-08-21-AbbVie-to-Present-New-Data-at-WCLC-2026-Showcasing-Innovation-Across-Lung-Cancer-Pipeline
- Zhang L, Zhao Y, Fan Y, et al. RC148 (ABBV-1480, PD-1/VEGF bispecific antibody) plus chemotherapy in first-line locally advanced or metastatic non-small cell lung cancer. Abstract OA14.01.03. Presented at: World Conference on Lung Cancer; 2026; Seoul, Republic of Korea.
- Byers LA, Cho BC, Cooper AJ, et al. SEZ6-targeting antibody-drug conjugate ABBV-706 in advanced small cell lung cancer and solid tumors: a phase 1 trial. Nat Med. 2026;32(8):2898-2908. doi:10.1038/s41591-026-04452-0