FDA ‘Orphan’ Status for TG Therapeutics Leukemia Therapy

FDA has granted TG Therapeutics an orphan drug designation for its next generation PI3K Delta inhibitor, TGR-1202, for treating patients with chronic lymphocytic leukemia (CLL). TGR-1202 is currently being evaluated in the UNITY-CLL Phase 3 trial for patients with both frontline and previously treated CLL. The delta isoform of PI3K is strongly expressed in cells of hematopoietic origin and is believed to be important in the proliferation and survival of B‐lymphocytes, the company says. “Inhibition of PI3K delta signaling with TGR-1202 has demonstrated robust activity in numerous pre-clinical models and primary cells from patients with hematologic malignancies,” it adds.

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