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Ref Type Journal Article
PMID (29973670)
Authors Dupuis F, Lamant L, Gerard E, Torossian N, Chaltiel L, Filleron T, Beylot-Barry M, Dutriaux C, Prey S, Gros A, Jullie ML, Meyer N, Vergier B
Title Clinical, histological and molecular predictors of metastatic melanoma responses to anti-PD-1 immunotherapy.
Journal Vol Issue Date Pages Journal Short Title
British journal of cancer 119 2 2018 Jul 193-199 Br J Cancer
URL
Abstract Text Prescribing anti-programmed death-1 (PD-1) immunotherapy for advanced melanoma is currently not restricted by any biomarker assessment. Determination of programmed death-ligand-1 (PD-L1)-expression status is technically challenging and is not mandatory, because negative tumours also achieve therapeutic responses. However, reproducible biomarkers predictive of a response to anti-PD-1 therapy could contribute to improving therapeutic decision-making.This retrospective study on 70 metastatic melanoma patients was undertaken to evaluate the relationships between clinical, histological, immunohistochemical and/or molecular criteria, and the 6-month objective response rate.Better objective response rates were associated with metachronous metastases (P = 0.04), PD-L1 tumour- and/or immune-cell status (P = 0.01), CD163+ histiocytes at advancing edges (P = 0.009) of primary melanomas and NRAS mutation (P = 0.019). Moreover, CD163+ histiocytes at advancing edges (P = 0.04) were associated with longer progression-free survival (PFS), and metachronous metastases with longer overall survival (P = 0.02) and PFS (P = 0.049).Combining these reproducible biomarkers could help improve therapeutic decision-making for patients with progressive disease.

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