Table 1.

Molecular Genetic Testing Used in ATP6V0A2-Related Cutis Laxa

Gene 1MethodProportion of Pathogenic Variants 2 Detectable by Method
ATP6V0A2 Sequence analysis 3>95% 4
Gene-targeted deletion/duplication analysis 5Rare 4, 6
1.

See Table A. Genes and Databases for chromosome locus and protein.

2.

See Molecular Genetics for information on variants detected in this gene.

3.

Sequence analysis detects variants that are benign, likely benign, of uncertain significance, likely pathogenic, or pathogenic. Variants may include small intragenic deletions/insertions and missense, nonsense, and splice site variants; typically, exon or whole-gene deletions/duplications are not detected. For issues to consider in interpretation of sequence analysis results, click here.

4.

Data derived from the subscription-based professional view of Human Gene Mutation Database [Stenson et al 2020]

5.

Gene-targeted deletion/duplication analysis detects intragenic deletions or duplications. Methods used may include a range of techniques such as quantitative PCR, long-range PCR, multiplex ligation-dependent probe amplification (MLPA), and a gene-targeted microarray designed to detect single-exon deletions or duplications.

6.

Hucthagowder et al [2009] identified deletion of exon 16 in four unrelated individuals of Middle Eastern origin in their cohort of 17 affected individuals from 16 families. Jones et al [2013] described a deletion of exon 9. A deletion of the whole gene was identified by Gardeitchik et al [2014].

From: ATP6V0A2-Related Cutis Laxa

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