Okamoto syndrome has features overlapping with Au-Kline syndrome and is caused by HNRNPK mutation

American Journal of Medical Genetics. Part a
Nobuhiko Okamoto

Abstract

Okamoto syndrome is characterized by severe intellectual disability, generalized hypotonia, stenosis of the ureteropelvic junction with hydronephrosis, cardiac anomalies, and characteristic facial gestalt. Several patients have been reported. The basic mechanism of Okamoto syndrome has not been clarified. Au-Kline syndrome is a new syndrome due to loss-of-function variants in the HNRNPK (heterogeneous nuclear ribonucleoprotein K) gene. A new patient with Okamoto syndrome visited our hospital. We noticed that the patient had features overlapping with Au-Kline syndrome. We studied the HNRNPK gene by Sanger sequencing, and identified a novel splicing variant. We suggest that Okamoto syndrome is identical to Au-Kline syndrome.

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Citations

Mar 30, 2020·American Journal of Medical Genetics. Part a·Isabelle MaystadtDeniz Karadurmus
Dec 15, 2020·Journal of Neuropathology and Experimental Neurology·Motoi YoshimuraToru Iwaki
May 1, 2021·Cancers·Benedetto Daniele GiaimoTilman Borggrefe
Apr 21, 2021·Genome Medicine·Madelyn A GillentineEvan E Eichler

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