CCR5 and HIV infectious disease: The discovery of the CCR5-Δ32 gene mutation has brought hope for a cure, evidenced by six cases of patients being cured of HIV Five patients (“the Berlin Patient” [50], “the London Patient” [51], “the New York Patient” [52], “the City of Hope Patient” [53], and “the Düsseldorf Patient” [54]) were cured of HIV infection after receiving stem cell transplants with CCR5-Δ32 gene mutations due to fatal malignancies, and another patient showed no viral rebound post-transplant without CCR5 deletion [55].