For patients with ALL, the G7 allele of rs5839828, the C allele of rs36084323, and the G allele of rs2227982 in the PDCD1 gene were also associated with a higher risk for disease relapse (allele model: p = 0.0008, 0.0095, and 0.0018, respectively). This evidence concerns the gene PDCD1 and acute lymphoblastic leukemia.