Journal
AMERICAN JOURNAL OF MEDICAL GENETICS PART A
Volume 185, Issue 5, Pages 1366-1378Publisher
WILEY
DOI: 10.1002/ajmg.a.62102
Keywords
chromatin remodeling; epilepsy; microcephaly
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NEDDFL is a neurodevelopmental disorder characterized by developmental delay, speech delay, microcephaly, and dysmorphic features caused by variants in the BPTF gene. A study described the clinical features in 25 novel individuals with NEDDFL, revealing additional complications such as mild brain abnormalities, seizures, scoliosis, and various ophthalmologic complications. These findings further support the diverse and multi-faceted consequences of haploinsufficiency of BPTF.
Neurodevelopmental disorder with dysmorphic facies and distal limb anomalies (NEDDFL), defined primarily by developmental delay/intellectual disability, speech delay, postnatal microcephaly, and dysmorphic features, is a syndrome resulting from heterozygous variants in the dosage-sensitive bromodomain PHD finger chromatin remodeler transcription factor BPTF gene. To date, only 11 individuals with NEDDFL due to de novo BPTF variants have been described. To expand the NEDDFL phenotypic spectrum, we describe the clinical features in 25 novel individuals with 20 distinct, clinically relevant variants in BPTF, including four individuals with inherited changes in BPTF. In addition to the previously described features, individuals in this cohort exhibited mild brain abnormalities, seizures, scoliosis, and a variety of ophthalmologic complications. These results further support the broad and multi-faceted complications due to haploinsufficiency of BPTF.
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