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09.09.2019 | Original Article | Ausgabe 9/2019

Cancer Immunology, Immunotherapy 9/2019

TNFSF4 (OX40L) expression and survival in locally advanced and metastatic melanoma

Zeitschrift:
Cancer Immunology, Immunotherapy > Ausgabe 9/2019
Autoren:
Jason Roszik, Ettai Markovits, Paula Dobosz, Adi Layani, Keren Slabodnik-Kaner, Erez N. Baruch, Guy Ben-Betzalel, Elizabeth Grimm, Raanan Berger, Yehezkel Sidi, Jacob Schachter, Ronnie Shapira-Frommer, Dror Avni, Gal Markel, Raya Leibowitz-Amit
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s00262-019-02382-0) contains supplementary material, which is available to authorized users.
Gal Markel and Raya Leibowitz-Amit are equal corresponding authors.
Jason Roszik and Ettai Markovits contributed equally to this work.

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Abstract

Immunotherapy with checkpoint inhibitors revolutionized melanoma treatment in both the adjuvant and metastatic setting, yet not all metastatic patients respond, and metastatic disease still often recurs among immunotherapy-treated patients with locally advanced disease. TNFSF4 is a co-stimulatory checkpoint protein expressed by several types of immune and non-immune cells, and was shown in the past to enhance the anti-neoplastic activity of T cells. Here, we assessed its expression in melanoma and its association with outcome in locally advanced and metastatic disease. We used publicly available data from The Cancer Genome Atlas (TCGA) and the Cancer Cell Line Encyclopedia (CCLE), and RNA sequencing data from anti-PD1-treated patients at Sheba medical center. TNFSF4 mRNA is expressed in melanoma cell lines and melanoma samples, including those with low lymphocytic infiltrates, and is not associated with the ulceration status of the primary tumor. Low expression of TNFSF4 mRNA is associated with worse prognosis in all melanoma patients and in the cohorts of stage III and stage IIIc–IV patients. Low expression of TNFSF4 mRNAs is also associated with worse prognosis in the subgroup of patients with low lymphocytic infiltrates, suggesting that tumoral TNFSF4 is associated with outcome. TNFSF4 expression was not correlated with the expression of other known checkpoint mRNAs. Last, metastatic patients with TNFSF4 mRNA expression within the lowest quartile have significantly worse outcome on anti-PD1 treatment, and a significantly lower response rate to these agents. Our current work points to TNFSF4 expression in melanoma as a potential determinant of prognosis, and warrants further translational and clinical research.

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