Abstract: T-cell lymphomas are a heterogeneous group of malignancies involving T lymphocytes and generally characterized by a poor prognosis. Among them, cutaneous T-cell lymphomas involve primarily the skin. Mycosis fungoides and Sézary syndrome are the most frequent cutaneous T-cell lymphomas. Now the inventors showed the expression of CD38 by Sézary cells and in CD4+ blood cells of patients with Sezary syndrome. CD38 therefore appears as a useful diagnostic, prognostic and follow-up marker, and as a potential therapeutic target in T-cell lymphomas. Therapeutic depletion of CD38-expressing cancer cells would eliminate tumor cells.

Abstract: T-cell lymphomas are a heterogeneous group of malignancies involving T lymphocytes and generally characterized by a poor prognosis. Among them, cutaneous T-cell lymphomas involve primarily the skin. Mycosis fungoides and Sezary syndrome are the most frequent cutaneous T-cell lymphomas. The inventors studied the regulatory T phenotype of Sezary cells and showed the expression of CCR8 (CD198) by Sezary cells and other T-cell lymphoma cell lines. CCR8 therefore appears as a useful diagnostic, prognostic and follow-up marker, and as a potential therapeutic target in T-cell lymphomas. Therapeutic depletion of CCR8-expressing cancer cells would eliminate tumor cells and also activate the anti-tumor immunity in T-cell lymphomas.

Abstract: The present disclosure relates to methods and pharmaceutical compositions for enhancing NK cell killing activities. In particular, the disclosure relates to a method of enhancing NK cell killing activities in a subject in need thereof comprising administering to the subject a therapeutically effective amount of a compound capable of stimulating CD245 on NK cells.