ClinVar Miner

Submissions for variant NM_032119.3(ADGRV1):c.(?_17020)-19_(17856_?)+58dup

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine RCV000219811 SCV000271799 uncertain significance not specified 2015-10-04 criteria provided, single submitter clinical testing Variant classified as Uncertain Significance - Favor Pathogenic. The duplication of exons 79-83 (c.(?_17020-19)_(17856+58_?)dup) in GPR98 has been previously re ported in two individuals with Usher syndrome; one who was reportedly homozygous and one who was compound heterozygous for a truncating variant (Besnard 2012, A parisi 2014). However, for the individual with the homozygous duplication it was not clearly stated if the duplication was presumed homozygous based on parental testing or solely on the NGS and/or array-CGH data (Aparisi 2014), and parental testing for cis/trans analysis was not reported for the second individual (Besn ard 2012). In addition, data showing whether the duplication is in tandem, there by disrupting the normal reading frame of the protein, or was inserted at a diff erent locus which may not impact the protein, was not provided for either indivi dual. Several multi-exonic duplications in GPR98 have been reported in the Datab ase of Genomic Variants (http://.tcag.ca/dgv/app/home); however, the frequency o f this duplication in the general population is unknown. In summary, while there is some suspicion for a pathogenic role given the previous reports, the clinica l significance of this variant is uncertain.

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