CYP3A5 and mucositis: Patients who do not express CYP3A5, as well as those with the 3R/3R genotype (rs3832526, ASNS), had a higher risk of developing mucositis (OR = 4.55 [1.01–20.15], p = 0.049 and OR = 6.88 [1.88–25.14], p = 0.004) (Supplementary Table S5).