Two Novel GATA1 Mutations in Transient Abnormal Myelopoiesis of Thai Neonates with Down Syndrome.
JOURNAL OF PEDIATRIC GENETICS(2019)
Abstract
Children with Down syndrome (DS) are 150 times more likely to develop acute myeloid leukemia (ML-DS), compared with those without. One risk factor is transient abnormal myelopoiesis (TAM). Somatic truncating GATA1 mutations are found in most TAM patients and are markers for future ML-DS. We identified two novel frameshift mutations in our seven newborns with DS and TAM: a heterozygous mutation of 17 nucleotide duplication (c.154_170 dup) and a heterozygous 9-nucleotide deletion combined with a 2-nucleotide insertion (c.150_158delins CT). Both mutations introduced a truncated GATA1 protein. Thus, neonates with DS and TAM require frequent ML-DS monitoring.
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Key words
transient abnormal myelopoiesis,Down syndrome,GATA1 mutation
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