AbbVie announces new data at ASCO 2026 from its Next-Generation Oncology Pipeline in lung cancer, ovarian cancer and multiple myeloma

Collectively, these presentations highlight AbbVie's continued focus on attacking cancer from inside and outside the cell, supported by sustained investment in its expanding antibody‑drug conjugate (ADC) platform, including Topoisomerase I inhibitor (Top1i)–based ADCs and its T‑cell engager (TCE) portfolio.

Key findings presented include:

Data from AbbVie's Top1i ADCs Across Solid Tumors:

• Metastatic castration-resistant prostate cancer (mCRPC): A first-in-human Phase 1 study (NCT06318273) evaluating ABBV-969, a potential first-in-class bispecific ADC targeting PSMA/STEAP1, in heavily pretreated patients with mCRPC, demonstrated a confirmed objective response rate (ORR) of 45% among 29 patients with RECIST-evaluable disease. At active dose levels, 67% of patients achieved at least a 50% reduction in prostate-specific antigen (PSA50), with 28% achieving PSA90 responses. The safety profile was manageable in heavily pretreated patients with mCRPC.¹ Additional findings to be presented at the meeting.

• Small cell lung cancer (SCLC): In Phase 1 data (NCT05599984) of ABBV-706 (SEZ6-directed ADC) in the monotherapy cohort (n=17), SCLC patients receiving ABBV-706 at the recommended Phase 3 dose of 1.8 mg/kg as a second-line therapy achieved an objective response rate (ORR) of 82%— promising data in a disease where prognosis remains poor. The safety profile was comparable with previously reported data.² Additional findings and updated data will be presented at the meeting. The findings support continued evaluation of ABBV-706 in SCLC.

• Platinum-resistant ovarian cancer (PROC) and head and neck squamous cell carcinoma (HNSCC): Data from a Phase 1 basket study of Telisotuzumab adizutecan (Temab-A), a next-generation c-Met–directed ADC, demonstrated antitumor activity of Temab-A monotherapy in biomarker unselected PROC (NCT06084481) and HNSCC (NCT06084481) patients.^3,4
  • Additional observations in c-Met selected patients, to be presented at the meeting, highlight the potential of Temab-A in this population.^3,4
  • These new data support the potential of Temab-A across an expanding range of solid tumors and patient populations, including previously presented data in lung, colorectal and gastric cancers and across patients with MET-amplification and increased c-Met expression.

• Relapsed/refractory multiple myeloma (R/R MM): Data from a Phase 1b study of etentamig (NCT05650632), being investigated as a next-generation B-cell maturation antigen (BCMA) x CD3 T-cell engager, as monotherapy in a cohort of heavily pre-treated BCMA-exposed R/R MM patients will be presented at the meeting.
  • Etentamig is an investigational BCMA and CD3 bispecific antibody T-cell engager composed of bivalent BCMA-binding domains allowing for high BCMA-avidity and a low-affinity CD3 binding domain.
  • The data showed that among patients (n=11) that proceeded to etentamig after BCMA-directed CAR-T in the prior line of therapy, an ORR of 64% was achieved. Minimal residual disease (MRD) negativity was observed in 67% (2/3) of evaluable patients who received BCMA-directed therapy in the prior line of therapy. The median duration of response was 13 months. No new safety signals were observed. Despite no step-up dosing (SUD) in this cohort, all cytokine release syndrome (CRS) reported (57%) were grade 1 and 2.⁵ Additional findings to be presented at the meeting.

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