Beside MF and SS, increased cutaneous CD39 expression was also detected in subcutaneous panniculitis‐like T cell lymphoma (SPTCL; n = 14), while primary cutaneous CD30‐positive lymphoproliferative disorders (pcCD30LPD; n = 20, including 15 cutaneous anaplastic large‐cell lymphomas and 5 lymphomatoid papulosis) displayed higher PPc than ISD control group, but no difference in H‐score (Figure 1c,d). The gene discussed is ENTPD1; the disease is subcutaneous panniculitis-like T-cell lymphoma.