C9orf72 and myotonic dystrophy type 1: In agreement with current known epidemiological studies, we observed that pathogenic alleles in FXN (FA), C9orf72 and DMPK (DM1) are more common in Europeans; those in ATN1 (DRPLA), TBP (SCA17) and in NOTCH2NLC are more common in East Asians; and those in JPH3 (HDL2) are more common in Africans.