HMOX1 and cutaneous mastocytosis: We found that the genotype frequencies in 9 out of the 26 SNPs analyzed in the TGFB2 gene and 3 out of 10 SNPs analyzed in HMOX1 gene showed suggestive association to CM (uncorrected P-value<0.05) when comparing CM patients with SnC patients but not in comparison with UM patients and UIF controls (Table 1).