In vitro studies have shown that CUR (10 μ M for 4 days) induces the maturation of lung cancer patient‐isolated regulatory cells (Treg) to T helper (Th)‐1 cells by inhibiting DNA transcription of forkhead protein‐3 (Foxp3) and increasing expression of IFN‐γ. The gene discussed is FOXP3; the disease is lung cancer.