Real world treatment practice in patients with advanced melanoma in the nivolumab era: five novel Italian case reports and a literature review

R. Depenni, C. De Rossi, M. De Tursi, R. Marconcini, T. Troiani

Department of Oncology and Haematology, Division of Oncology, University Hospital of Modena, Modena, Italy. depenni.roberta@policlinico.mo.it

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• Pharmacology

OBJECTIVE: The approval of the anti-PD1 antibody nivolumab has provided a significant therapeutic opportunity in the landscape of metastatic melanoma. In pivotal clinical trials, nivolumab improved clinical outcomes with a great safety profile. However, in real-world practice, the majority of the population with metastatic melanoma does meet one or more eligibility criteria of pivotal trials, since they have an ECOG-PS ≥ 2 or active/untreated known brain metastases. Waiting for larger real-wold studies that are currently lacking, but would be crucial to confirm the efficacy of nivolumab in challenging patients and to detect rare adverse events that could not be noticed in pivotal trials, this review collects both literature and unpublished case reports on nivolumab treatment in metastatic melanoma.

PATIENTS AND METHODS: Case reports, published from 2016 to February 2018, and five, unpublished case reports, representative of Italian clinical practice, were reported and potential issues that physicians could face with the use of nivolumab in the real world were discussed.

RESULTS: Among Italian cases, one patient had a huge retro-nuchal mass, which significantly decreased with few cycles of nivolumab; two patients were affected by cardiovascular comorbidities and one had brain metastasis; the last had a long history of disease, firstly diagnosed in 1997. A literature review was mainly focused on the experience in the management of rare immune adverse events related to treatment.

CONCLUSIONS: Nivolumab confirmed its efficacy and safety in real-world; the decision-making process on starting and scheduling the treatment, even in the management of adverse events, should consider multiple factors related to both patient (i.e., BRAF status, ECOG PS, comorbidities) and disease (burden, metastasis).

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