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White matter disorders and cerebral calcification - narrow panel v1.98 POLR3K Ivone Leong Tag watchlist tag was added to gene: POLR3K.
Tag founder-effect tag was added to gene: POLR3K.
White matter disorders and cerebral calcification - narrow panel v1.98 POLR3K Ivone Leong Classified gene: POLR3K as Amber List (moderate evidence)
White matter disorders and cerebral calcification - narrow panel v1.98 POLR3K Ivone Leong Added comment: Comment on list classification: New gene added by Zornitza Stark (Australian Genomics). This gene is associated with a relevant phenotype in OMIM but not in Gene2Phenotype.

PMID: 30584594. 2 affected individuals from 2 consanguineous families from same area in Algeria. Affected indviduals had global developmental delay with loss of motor, speech and cognitive milestones. Individuals also showed signs of nystagmus, ataxia, dystonia and spasticity. Both individuals had feeding difficulties and were tube fed, growth failure and microcephaly (-3 SD), and cryptorchidism. 1 patient had optic atrophy and hypodontia and the other patient had hypogonadotropic hypogonadism. Both individuals have the same variant (may be founder effect).

As other members of the same gene family are linked to similar phenotypes this gene has been given an Amber rating.
White matter disorders and cerebral calcification - narrow panel v1.98 POLR3K Ivone Leong Gene: polr3k has been classified as Amber List (Moderate Evidence).
White matter disorders and cerebral calcification - narrow panel v1.97 POLR3K Ivone Leong Phenotypes for gene: POLR3K were changed from Hypomyelinating leukodystrophy-21, MIM#619310 to Leukodystrophy, hypomyelinating, 21, OMIM:619310
White matter disorders and cerebral calcification - narrow panel v1.72 POLR3K Zornitza Stark gene: POLR3K was added
gene: POLR3K was added to White matter disorders and cerebral calcification - narrow panel. Sources: Literature
Mode of inheritance for gene: POLR3K was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: POLR3K were set to 30584594; 33659930
Phenotypes for gene: POLR3K were set to Hypomyelinating leukodystrophy-21, MIM#619310
Review for gene: POLR3K was set to AMBER
Added comment: Two individuals from same ethnic background reported with a common homozygous missense variant in this gene, suggestive of founder effect. Some functional evidence, and note other gene family members are linked to similar phenotypes.

Neurodegenerative phenotype: global developmental delay apparent from infancy with loss of motor, speech, and cognitive milestones in the first decades of life.
Sources: Literature