HLA-A and cutaneous mastocytosis: As HLA-A*02:06 and HLA-A*02:07 are very similar peptides—they differ in only a single amino acid residue substitution—it is possible that the expression of HLA-A*02:07 but not of HLA-A*02:06 was associated with CM-related SJS/TEN with SOC in the Han Chinese population (Ma et al., 2021).