“A retrospective analysis of the phase III OPTiM study found that treatment with talimogene laherparepvec (T-VEC; Imlygic) resulted in complete responses (CR) in 17% of patients seen in all stages of melanoma. Median time to achieve a CR was 8.6 (6.0–13.6) months. A high proportion of response occurred in patients with early-stage disease and lower tumor burden, according to study authors.
“In OPTiM, a phase III trial in 436 patients with unresected stage IIIB to IV melanoma, T-VEC improved durable response rates from 2.1% to 16.3% versus subcutaneous GM-CSF. Overall response rates (ORR) for T-VEC and GM-CSF were 26.4% and 5.7%, respectively. Median overall survival (OS) was 23.3 months with T-VEC and 18.9 months with GM-CSF (HR, 0.79; 95% CI, 0.62–1.00; P = .051).”