The HLA-DRB1*15:01 allele, a major genetic risk factor of MS (Schmidt et al, 2007), is also associated with susceptibility to allergic bronchopulmonary aspergillosis (ABPA) (Chauhan et al, 2000; Nasir et al, 2023). This evidence concerns the gene HLA-DRB1 and allergic bronchopulmonary aspergillosis.