ClinVar Miner

Submissions for variant NM_006852.6(TLK2):c.1589T>C (p.Leu530Pro)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard RCV002280349 SCV002568405 likely pathogenic Intellectual disability, autosomal dominant 57 2022-08-25 criteria provided, single submitter curation The heterozygous p.Leu530Pro variant in TLK2 was identified in 1 individual with a neurodevelopmental disorder including intellectual disability, seizure, delayed ability to walk, and short stature via a collaborative study between the Broad Institute's Center for Mendelian Genomics and the Neurodev Study (https://www.neurodevproject.org/). Trio exome analysis showed this variant to be de novo. The p.Leu530Pro variant in TLK2 has not been previously reported in individuals with neurodevelopmental disorders and was absent from large population studies. Computational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. The number of missense variants reported in TLK2 in the general population is lower than expected, suggesting there is little benign variation in this gene and slightly increasing the possibility that a missense variant in this gene may not be tolerated. In summary, although additional studies are required to fully establish its clinical significance, this variant is likely pathogenic for autosomal dominant intellectual disability. ACMG/AMP Criteria applied: PP3_moderate, PS2_moderate, PP2, PM2_supporting (Richards 2015).

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