CYP2B6 and mastocytosis: Five polymorphisms were found to be less frequently detectable in mastocytosis than in controls: rs61735841 in FTCD (OR = 0.026; 95% CI 0.003612–0.1833; p = 4.34 × 10−5), rs10838094 in OR51Q1 (OR = 0.2071; 95% CI 0.1572–0.2728; p = 2.21 × 10−29), rs2279343 in CYP2B6, OR = 0.2795; 95%CI; 0.199–0.3924; p = 2.32 × 10−10), rs76015112 in RPTN (OR = 2.965; 95% CI 0.205–0.4289; p = 2.94 × 10−7) genes and rs9828758 (OR = 0.1467; 95% CI 0.095–0.23; p = 2.94 × 10−7) near RP11 gene (Table 1, Figure 1, Figures S3 and S4).