Hyperprogression in advanced melanoma is not restricted to immunotherapy

Background: The definition of hyperprogressive disease (HPD) is controversial in the literature and has not been widely described in melanoma. The aim of this study was to determine whether the concept of HPD applies to patients treated for advanced melanoma, using a definition with a simple, reproducible criterion, and to determine whether it is possible to identify predictive factors for HPD.Methods: This was a retrospective analysis on a prospective cohort. The data were extracted from MelBase, a French prospective, multicentre cohort of adult patients with advanced melanoma. The patients, following informed consent, were treated prospectively with antiPD1, ipilimumab+nivolumab, BRAF/MEKi, or chemotherapy, 1st line or thereafter. HPD was defined, within 3 months following the start of the treatment, with the help of a clinical and biological criterion using Response Evaluation Criteria in Solid Tumours, Eastern Cooperative Oncology Group Performance Score, and lactate dehydrogenase.Results: The occurrence of HPD in the 4 groups was as follows (numbers of patients out of the total number): anti-PD1 98/1004 (10%), ipilumumab +nivolumab 19/327 (6%), targeted therapy 31/751 (4%), and chemotherapy 40/397 (10%). In the anti programmed cell death protein 1 (APD1) group, the relevant risk factors for HPD were: more than 3 metastatic sites (p = 0.03) and liver metastasis (p < 0.001).Conclusion: This data, thanks to relevant clinical and biological criteria feasible in daily practice, supports the presence of a subgroup whose disease deteriorates rapidly during mono-immunotherapy. Also observed with other treatments, HPD could be the consequence of a natural and aggressive evolution of the disease, alleviated by strong-acting treatments. (c) 2023 Elsevier Ltd. All rights reserved.