GATA3 abnormalities in six patients with HDR syndrome
Copyright policy )GATA3 abnormalities in six patients with HDR syndrome
GATA3 mutations cause HDR (hypoparathyroidism, sensorineural deafness, and renal dysplasia) syndrome and, consistent with the presence of the second DiGeorge syndrome locus (DGS2) proximal to GATA3, distal 10p deletions often leads to HDR and DiGeorge syndromes. Here, we report on six Japanese patients with GATA3 abnormalities. Cases 1-5 had a normal karyotype, and case 6 had a 46,XX,del(10)(p15) karyotype. Cases 1-6 had two or three of the HDR triad features. Case 6 had no DiGeorge syndrome phenotype except for hypoparathyroidism common to HDR and DiGeorge syndromes. Mutation analysis showed heterozygous GATA3 mutations in cases 1-5, i.e., c.404-405insC (p.P135fsX303) in case 1, c.700T>C & c.708-709insC (p.F234L & p.S237fsX303) on the same allele in case 2, c.737-738insG (p.G246fsX303) in case 3, c.824G>T (p.W275L) in case 4, and IVS5+1G>C (splice error) in case 5. Deletion analysis of chromosome 10p revealed loss of GATA3 and preservation of D10S547 in case 6. The results are consistent with the previous finding that GATA3 mutations are usually identified in patients with two or three of the HDR triad features, and provide supportive data for the mapping of DGS2 in the region proximal to D10S547.
Adult, Male, Heterozygote, Adolescent, Chromosomes, Human, Pair 10, Hypoparathyroidism, HDR syndrome, Hearing Loss, Sensorineural, Mutation, Missense, GATA3 Transcription Factor, Phenotypic spectrum, Child, Preschool, Mutation, DiGeorge Syndrome, <i>GATA3</i>, Humans, Nephrosis, Female, DGS2, Frameshift Mutation, DiGeorge syndrome, Gene Deletion
Adult, Male, Heterozygote, Adolescent, Chromosomes, Human, Pair 10, Hypoparathyroidism, HDR syndrome, Hearing Loss, Sensorineural, Mutation, Missense, GATA3 Transcription Factor, Phenotypic spectrum, Child, Preschool, Mutation, DiGeorge Syndrome, <i>GATA3</i>, Humans, Nephrosis, Female, DGS2, Frameshift Mutation, DiGeorge syndrome, Gene Deletion
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