The association of HSP70 gene polymorphisms and MS hasbeen investigated based on the 1267 A/G polymorphism inthe HSP70-2 coding region and the 2437 T/C polymorphismin the HSP70-hom coding region in Canadian MS patients(21) while the promoter region polymorphism of HSP701hasbeen analysed in Italian MS patients (22). Here, HSPA1A is linked to myeloid sarcoma.