GLI1 and primary cutaneous T-cell non-Hodgkin lymphoma: Treatment of CTCL cells derived from the blood of patients with either Sézary syndrome (Hut78) or aggressive, extensively pretreated CTCL (HH) (ATCC.org) with NT1721 downregulated GLI1 transcription factor, which was associated with decreased viability, reduced proliferation and increased apoptosis.