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A new variant in PHKA2 is associated with glycogen storage disease type IXa.


ABSTRACT: Glucogenosis type IX is caused by pathogenic variants of the PHKA2 gene. Herein, we report a patient with clinical symptoms compatible with Glycogen Storage Disease type IXa. PYGL, PHKA1, PHKA2, PHKB and PHKG2 genes were analyzed by Next Generation Sequencing (NGS). We identified the previously undescribed hemizygous missense variant NM_000292.2(PHKA2):c.1963G > A, p.(Glu655Lys) in PHKA2 exon 18. In silico analyses showed two possible pathogenic consequences: it affects a highly conserved amino acid and disrupts the exon 18 canonical splice donor site. The variant was found as a "de novo" event.

SUBMITTER: Rodriguez-Jimenez C 

PROVIDER: S-EPMC5233919 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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A new variant in <i>PHKA2</i> is associated with glycogen storage disease type IXa.

Rodríguez-Jiménez Carmen C   Santos-Simarro Fernando F   Campos-Barros Ángel Á   Camarena Carmen C   Lledín Dolores D   Vallespín Elena E   Del Pozo Ángela Á   Mena Rocío R   Lapunzina Pablo P   Rodríguez-Nóvoa Sonia S  

Molecular genetics and metabolism reports 20170112


Glucogenosis type IX is caused by pathogenic variants of the <i>PHKA2</i> gene. Herein, we report a patient with clinical symptoms compatible with Glycogen Storage Disease type IXa. <i>PYGL</i>, <i>PHKA1</i>, <i>PHKA2</i>, <i>PHKB</i> and <i>PHKG2</i> genes were analyzed by Next Generation Sequencing (NGS). We identified the previously undescribed hemizygous missense variant NM_000292.2(PHKA2):c.1963G > A, p.(Glu655Lys) in <i>PHKA2</i> exon 18. <i>In silico</i> analyses showed two possible patho  ...[more]

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