ArticleJournal for immunotherapy of cancer2025
Real-world outcomes of talimogene laherparepvec as salvage therapy for advanced melanoma.
Article in Journal for immunotherapy of cancer, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Harnessing the immune system: future directions in cancer immunotherapy.Frontiers in immunology · 2026Review
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11 authors.
Funding
Abstract
backgroundTalimogene laherparepvec (T-VEC) is an oncolytic herpes simplex virus therapy approved for treatment of unresectable and metastatic melanoma. However, real-world use often occurs in heavily pretreated patients, where evidence of effectiveness remains limited. This study evaluates treatment responses and clinical factors influencing T-VEC outcomes in patients with diverse treatment histories.
methodsWe analyzed patients with metastatic melanoma treated with T-VEC between 2015 and 2024. Objective responses (OR), complete response (CR) and partial response were assessed using univariate and multivariate Cox regression models. Durability of responses, progression-free survival (PFS), and overall survival (OS) were evaluated using Kaplan-Meier estimates.
resultsAmong 121 patients, 105 (87%) patients received ≥1 prior lines of systemic therapy; 48 (40%) had a current or prior history of distant metastatic disease, and 42 (35%) had both injectable and non-injectable disease at the T-VEC initiation. Median PFS was 12.2 months (95% CI 6.2 to 20.9), and median OS was 35.5 months (95% CI 25.8 to 63.9). Of 113 evaluable patients, 76 (67%, 95% CI 58% to 76%) achieved an OR, including 39 (35%, 95% CI 26% to 44%) CR. The probability OR by 6 months was 56% (95% CI 46% to 65%). Of the 39 patients achieving CR, 37 (95%) remained alive and progression-free at last follow-up (median 19.1 months). In multivariate analysis, the adjusted HR (aHR) for OR in patients with non-injectable distant metastases at T-VEC initiation relative to those without was 0.43 (95% CI 0.23 to 0.78; p=0.006). The aHR for OR among those immunosuppressed compared with those not immunosuppressed was 0.18 (95% CI 0.04 to 0.69; p=0.013), indicating a reduced likelihood of response for patients who were immunosuppressed. Unadjusted HRs for achieving an OR after 1, 2, and ≥3 prior therapies (vs none) were 1.20 (95% CI 0.57 to 2.52; p=0.627), 1.21 (95% CI 0.52 to 2.80; p=0.653), and 0.77 (95% CI 0.35 to 1.68; p=0.507), respectively.
conclusionsThis study demonstrates T-VEC's potential efficacy in achieving meaningful disease control and response durability in patients with unresectable and/or metastatic melanoma, including those with diverse prior-treatment histories and comorbidities.
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