All the following diseases are associated with triplet and other repeat sequences except
Disease Nucleotide Repeat Gene affected Chromosome Fragile X syndrome CGG FMR1 Sex X chromosome Friedrich ataxia GAA FXN 9 Huntington&;s disease CAG HTT 4 Myotonic dystrophy - type 1 CTG DMPK 19 Reference: GHAI Essential pediatrics, 8th edition
Huntington's disease
Friedreich's ataxia
Myotonic dystrophy
Hereditary motor-sensory neuropathy
Genetic and genetic disorders