Italian nivolumab Expanded Access Programme in melanoma adjuvant setting: patient outcomes and safety profile.

The CheckMate 238 randomised study demonstrated the relevant benefit in terms of recurrence-free survival (RFS) of nivolumab versus ipilimumab in resected stage IIIB-C or IV melanoma patients with a tolerable safety profile. From November 2018 to June 2019, 611 patients with stage III and IV resected melanoma were enroled to receive nivolumab as part of an Italian Expanded Access Programme (EAP). According to stages, 77% were stage III while 141 (23%) were stage IV with no evidence of disease (NED). Among stage III, 121 patients had IIIA (19.8%). After a median follow-up of 23 months, the RFS in the Intention-to-Treat (ITT) population was 76.6% at 1 year and 59.6% at 2 years; 1- and 2-year distant metastasis-free survival were 83.7% and 71.2%, respectively. The overall survival rate in the ITT population was 93.8% at 1 year and 85.5% at 2 years. No significant differences in RFS were observed according to BRAF status. Treatment-related adverse events of grades 3-4 occurred in 11.5% of patients. This paper reports the results of the Italian Nivolumab EAP in the adjuvant setting of stage III and IV NED melanoma patients. Our results confirm in a real-life setting the clinical activity and safety of nivolumab reported in the CheckMate238 registrative/pivotal. The enroled cohort of 611 patients highlights the relevant clinical need in this setting, also confirmed by the very short accrual time, representing one of the largest series reported as adjuvant EAP with the longest follow-up.

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Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.