期刊
ONCOTARGETS AND THERAPY
卷 9, 期 -, 页码 7081-7093出版社
DOVE MEDICAL PRESS LTD
DOI: 10.2147/OTT.S115245
关键词
benefit-risk; clinical trial; durable response rate; immunotherapy; oncolytic virus; talimogene laherparepvec
资金
- Amgen
- National Institute for Health Research [NF-SI-0515-10101] Funding Source: researchfish
- Rosetrees Trust [M236-CD1] Funding Source: researchfish
Objectives: Talimogene laherparepvec is the first oncolytic immunotherapy to receive approval in Europe, the USA and Australia. In the randomized, open-label Phase III OPTiM trial (NCT00769704), talimogene laherparepvec significantly improved durable response rate (DRR) versus granulocyte-macrophage colony-stimulating factor (GM-CSF) in 436 patients with unresectable stage IIIB-IVM1c melanoma. The median overall survival (OS) was longer versus GM-CSF in patients with earlier-stage melanoma (IIIB-IVM1a). Here, we report a detailed subgroup analysis of the OPTiM study in patients with IIIB-IVM1a disease. Patients and methods: The patients were randomized (2:1 ratio) to intralesional talimogene laherparepvec or subcutaneous GM-CSF and were evaluated for DRR, overall response rate (ORR), OS, safety, benefit-risk and numbers needed to treat. Descriptive statistics were used for subgroup comparisons. Results: Among 249 evaluated patients with stage IIIB-IVM1a melanoma, DRR was higher with talimogene laherparepvec compared with GM-CSF (25.2% versus 1.2%; P < 0.0001). ORR was also higher in the talimogene laherparepvec arm (40.5% versus 2.3%; P < 0.0001), and 27 patients in the talimogene laherparepvec arm had a complete response, compared with none in GM-CSF-treated patients. The incidence rates of exposure-adjusted adverse events (AE) and serious AEs were similar with both treatments. Conclusion: The subgroup of patients with stage IIIB, IIIC and IVM1a melanoma (57.1% of the OPTiM intent-to-treat population) derived greater benefit in DRR and ORR from talimogene laherparepvec compared with GM-CSF. Talimogene laherparepvec was well tolerated.
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