rs770829226
Variant summary
Our verdict is Likely pathogenic. The variant received 9 ACMG points: 10P and 1B. PM2PP5_Very_StrongBP4
The NM_000053.4(ATP7B):c.1708-5T>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,938 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Consequence
NM_000053.4 splice_region, intron
Scores
Clinical Significance
Conservation
Publications
- Wilson diseaseInheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Genomics England PanelApp, Orphanet, Labcorp Genetics (formerly Invitae)
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ACMG classification
Our verdict: Likely_pathogenic. The variant received 9 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ATP7B | NM_000053.4 | c.1708-5T>G | splice_region_variant, intron_variant | Intron 4 of 20 | ENST00000242839.10 | NP_000044.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152152Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000802 AC: 2AN: 249466 AF XY: 0.00000739 show subpopulations
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461786Hom.: 0 Cov.: 31 AF XY: 0.00000413 AC XY: 3AN XY: 727202 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152152Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74314 show subpopulations
ClinVar
Submissions by phenotype
Wilson disease Pathogenic:6
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This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
Variant summary: ATP7B c.1708-5T>G alters a conserved nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. Several computational tools predict a significant impact on normal splicing: One predict the variant abolishes the canonical 3' acceptor site. Two predict the variant weakens the canonical 3' acceptor site. One predict the variant no significant impact on splicing. At least one publication reports experimental evidence that this variant affects mRNA splicing by skipping exon 5 (Shimizu_1995). The variant allele was found at a frequency of 8e-06 in 249516 control chromosomes. c.1708-5T>G has been reported in the literature in multiple individuals affected with Wilson Disease (Okada_2000, Shimizu_1995). These data indicate that the variant is very likely to be associated with disease. The following publications have been ascertained in the context of this evaluation (PMID: 10790207, 8526905). ClinVar contains an entry for this variant (Variation ID: 495402). Based on the evidence outlined above, the variant was classified as pathogenic. -
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This sequence change falls in intron 4 of the ATP7B gene. It does not directly change the encoded amino acid sequence of the ATP7B protein. This variant is present in population databases (rs770829226, gnomAD 0.01%). This variant has been observed in individual(s) with Wilson disease (PMID: 8526905, 11721763, 21707886, 28507923). ClinVar contains an entry for this variant (Variation ID: 495402). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at