title: Novel mutations of the MLC1 gene in Turkish patients.
abstract: Megalencephalic Leukoencephalopathy with Subcortical Cysts (MLC) is a rare autosomal recessive disease presenting with increased head circumference at birth or in early infancy. MLC1 (MIM 605908) mutations are responsible for this disorder. In this study, we sequenced the entire coding region of the MLC1 gene in 13 patients and detected five novel nucleotide variations in six of them. Two of the novel variations created a missense amino acid change and the other three were located in the introns and were putative splice mutations. One novel missense variation was observed in two unrelated patients from the central Black Sea region, and the data suggested a founder haplotype for this novel variation. Similarly, three unrelated patients with the previously reported p.Thr118Arg mutation shared a common haplotype. These data suggest an Anatolian origin for these two mutations. As in the previous reports, it is not possible to correlate the clinical phenotype of the patients with the mutation spectra.
authors.affiliation: Department of Medical Biology, Hacettepe University, Faculty of Medicine, 06100 Sihhiye, Ankara, Turkey.
authors.forename: Ayşe
authors.initials: A
authors.lastname: Yüzbaşioğlu
authors.forename: Meral
authors.initials: M
authors.lastname: Topçu
authors.forename: Y
authors.initials: Y
authors.lastname: Cetin Kocaefe
authors.forename: Meral
authors.initials: M
authors.lastname: Ozgüç
mesh_terms: D000293:Adolescent; D002648:Child; D003560:Cysts / Q000235:genetics* / Q000473:pathology; D004252:DNA Mutational Analysis; D005260:Female; D006239:Haplotypes; D020279:Hereditary Central Nervous System Demyelinating Diseases / Q000235:genetics* / Q000473:pathology; D006801:Humans; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D009154:Mutation; D020125:Mutation, Missense; D020641:Polymorphism, Single Nucleotide; D022821:RNA Splice Sites / Q000235:genetics; D014421:Turkey
chemical_list: C425069:MLC1 protein, human; D008565:Membrane Proteins; D022821:RNA Splice Sites