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Becotatug vedotin shows 20.9% objective response in recurrent head and neck squamous cell carcinoma after prior therapyFor patients with advanced head and neck cancer, a new drug showed a 21% response rate in early testing

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Key Takeaway
Consider becotatug vedotin in R/M SCCHN; Phase IIa data show 20.9% ORR with manageable toxicity.

This multicenter, Phase IIa trial assessed the efficacy and safety of intravenous becotatug vedotin administered at 2 or 2.3 mg/kg every 3 weeks. The study population consisted of 67 patients with recurrent or metastatic squamous cell carcinoma of the head and neck (R/M SCCHN) who had progressed after platinum-based chemotherapy and/or programmed cell death 1 (PD-1)/programmed death ligand 1 (PD-L1) inhibitors, including those with multiple lines of prior therapy. No comparator group was reported.

Primary and secondary outcomes included objective response rate (ORR), median duration of response (DoR), median progression-free survival (PFS), median overall survival (OS), and treatment-related adverse events (TRAE). The ORR was 20.9% (14/67 patients), with a 95% CI of 11.9-32.6. Median DoR was 10.9 months (95% CI, 2.6-15.1). Median PFS was 2.9 months (95% CI, 1.8-3.9), and median OS was 6.7 months (95% CI, 5-8.9). The follow-up duration was 0.7 months.

Treatment-related adverse events occurred in 91% (61/67) of patients. The most common events were rash (26.9%), pruritus (25.4%), constipation (23.9%), and anemia (20.9%). Serious adverse events, discontinuations, and specific funding or conflict information were not reported. The safety profile was described as manageable.

Limitations include the Phase IIa trial design, small sample size, lack of a control group, and short follow-up period. Causality cannot be definitively established. These findings are preliminary and should be interpreted with caution regarding their generalizability to broader clinical practice.

Imagine living with a cancer that has returned or spread after you have already tried the best standard treatments. For patients with recurrent or metastatic squamous cell carcinoma of the head and neck, options are often very limited. This study looked at a new medicine called becotatug vedotin given to 67 people who had already progressed on platinum-based chemotherapy and immune checkpoint inhibitors. These are powerful drugs that stop cancer cells from hiding, but they do not work for everyone.

The main goal was to see if the drug could shrink tumors. About 21% of patients achieved an objective response, meaning their tumors got smaller enough to measure. On average, those who responded saw their tumors stay smaller for nearly 11 months. However, the average time before the cancer started growing again was about 2.9 months, and the average total time lived after starting treatment was 6.7 months.

Safety was a major concern because these patients are already fragile. Most people, 91% of them, experienced side effects. The most common issues included skin rashes, intense itching, constipation, and low red blood cell counts. Despite these side effects, the team described the safety profile as manageable. This early trial suggests the drug might be a future option, but more research is needed to confirm these findings before it becomes a standard choice.

What this means for you:
In early testing, this new drug shrank tumors in 21% of patients with advanced head and neck cancer who had no other options.

Study Details

Study typePhase2
EvidenceLevel 3
Follow-up0.7 mo
PublishedApr 2026
View Original Abstract ↓
PURPOSE: This multicenter, phase IIa trial (NCT04868162) investigated the efficacy and safety of becotatug vedotin, an anti-epidermal growth factor receptor (EGFR) antibody-drug conjugate, in patients with recurrent or metastatic squamous cell carcinoma of the head and neck (R/M SCCHN) who have limited therapeutic options. PATIENTS AND METHODS: Patients with R/M SCCHN who progressed after platinum-based chemotherapy and/or programmed cell death 1 (PD-1)/programmed death ligand 1 (PD-L1) inhibitors, including those with multiple lines of prior therapy, were administered intravenous becotatug vedotin at either 2 or 2.3 mg/kg every 3 weeks. The primary endpoint was the objective response rate (ORR). RESULTS: Sixty-seven patients were enrolled (35 received 2 mg/kg and 32 received 2.3 mg/kg). The ORR was 20.9% [14/67, 95% confidence interval (CI), 11.9-32.6], with a median duration of response (DoR) of 10.9 months (95% CI, 2.6-15.1). The median progression-free survival (PFS) was 2.9 months (95% CI, 1.8-3.9), and the median overall survival (OS) was 6.7 months (95% CI, 5-8.9). Treatment-related adverse events (TRAE) were reported in 91% (61/67) patients, most commonly being rash (26.9%), pruritus (25.4%), constipation (23.9%), and anemia (20.9%). CONCLUSIONS: Becotatug vedotin demonstrated promising antitumor activity with a manageable safety profile in previously heavily treated R/M SCCHN, particularly at the recommended dose of 2.3 mg/kg, among patients who had failed platinum-based chemotherapy and PD-1/PD-L1 inhibitors (≤2 prior lines of therapy).
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