Identification of sequence variation in the galactose-1-phosphate uridyl transferase gene by dHPLC

Transferase-deficient galactosaemia is an inherited disorder of carbohydrate metabolism, caused by mutation at the galactose-1-phosphate uridyl transferase ( GALT) locus. A denaturing high performance liquid chromatography (dHPLC) method was developed for variant scanning of the GALT gene. The method unequivocally identified the Duarte D1, D2, Q188R, and K285N GALT alleles and associated polymorphisms. Length polymorphism in an intronic Alu repeat was characterised and a novel Single Nucleotide Polymorphism (IVS10nt-322g → t) associated with the D1 allele was identified.