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Homozygous Missense Variation in PNPLA8 Causes Prenatal-Onset Severe Neurodegeneration.


ABSTRACT: The patatin-like protein family plays an important role in various biological functions including lipid homeostasis, cellular growth, and signaling. Conserved across species, the patatin domain is shared by all 9 members of the PNPLA family without redundancy in the coding sequences. The defective function of PNPLA2, PNPLA6, and PNPLA9 are known to cause mitochondrial-related neurodegeneration. Recently, PNPLA8 has been associated with mitochondrial myopathy and poor weight gain with lactic acidosis in 3 unrelated families. Using whole-exome sequencing, we identified a homozygous novel missense variation c.1874A>G in the patatin domain of PNPLA8. The patient had prenatal-onset severe and progressive neurodegeneration with mortality in infancy.

SUBMITTER: Masih S 

PROVIDER: S-EPMC8215966 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Homozygous Missense Variation in <i>PNPLA8</i> Causes Prenatal-Onset Severe Neurodegeneration.

Masih Suzena S   Moirangthem Amita A   Phadke Shubha R SR  

Molecular syndromology 20210319 3


The patatin-like protein family plays an important role in various biological functions including lipid homeostasis, cellular growth, and signaling. Conserved across species, the patatin domain is shared by all 9 members of the PNPLA family without redundancy in the coding sequences. The defective function of <i>PNPLA2</i>, <i>PNPLA6</i>, and <i>PNPLA9</i> are known to cause mitochondrial-related neurodegeneration. Recently, <i>PNPLA8</i> has been associated with mitochondrial myopathy and poor  ...[more]

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