Early Diagnosis of Mycosis Fungoides

    Not Recruiting
  • participants needed
  • sponsor
    Assistance Publique - Hôpitaux de Paris
Updated on 21 January 2021
skin disorder
skin biopsy
sezary syndrome
cutaneous lymphoma


Mycosis fungoides (MF) is an epidermotropic cutaneous T cell lymphoma characterized by the accumulation of CD4+ T-lymphocytes in the skin. Early MF presents as erythematous patches and/or infiltrated plaques. The diagnosis of early MF is a major diagnostic challenge and the differential diagnosis with inflammatory dermatoses is often very difficult. The histopathological diagnosis is also difficult and delayed. Therefore, it is important to develop biomarkers and/or a combination of biomarkers in order to improve the early diagnostic of MF.

In a previous trial, investigators included 490 patients in a study aiming at identifying skin biomarkers of early MF. Several activating and inhibiting KIRs were found to be interesting for the skin diagnostic of MF, mainly KIR2DL4 and KIR3DL2. Investigators later evaluated blood biomarkers in patients with erythrodermic MF and Sezary Syndrome (SS). This French institutional study demonstrated that the identification by PCR of a combination of 4 blood markers (CD158k/KIR3DL2, PLS3/T-Plastin, Twist and NKp46) allowed a reliable diagnosis of lymphoma in erythrodermic patients. This previously published study interestingly showed that 30% to 50% of patients with early MF expressed at least one of these biomarkers in the blood (unpublished data). Other groups also recently showed that TOX can be a diagnostic tool for MF.

The aim of this study is to establishing an accurate blood diagnosis for early suspected MF by demonstrating that newly identified biomarkers or their combination [5 cutaneous KIR receptor markers (KIR2DS1, KIR2DS3, KIR3DL1, KIR2DL4, KIR3DL2) and 5 blood biomarkers (TOX, Twist-1, PLS3/T-plastin, KIR3DL2, NKp46)] are differentially expressed by patients with MF and patients with inflammatory dermatoses closely resembling MF lesions.

Statistical analysis will establish the best combination of blood biomarkers allowing the differentiation between the two groups of patients, combination that could represent a suitable diagnostic tool for early MF.

Condition cutaneous T-cell lymphoma
Treatment blood sampling
Clinical Study IdentifierNCT02539472
SponsorAssistance Publique - Hôpitaux de Paris
Last Modified on21 January 2021

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