CD7

CD7 (Cluster of Differentiation 7) is a protein that in humans is encoded by the "CD7" gene.
Function.
This gene encodes a transmembrane protein which is a member of the immunoglobulin superfamily. This protein is found on thymocytes and mature T cells. It plays an essential role in T-cell interactions and also in T-cell/B-cell interaction during early lymphoid development.
Interactions.
CD7 has been shown to interact with PIK3R1.
Clinical significance.
CD7 can be aberrantly expressed in refractory anaemia with excess blasts (RAEB) and may confer a worse prognosis. Also, a lack of CD7 expression could insinuate mycosis fungoides (MF) or Sezary syndrome (SS).