rs63750759
Variant summary
Our verdict is Pathogenic. The variant received 12 ACMG points: 13P and 1B. PM1PM5PP3PP5_Very_StrongBP4
The NM_001171.6(ABCC6):c.3940C>T(p.Arg1314Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00013 in 1,576,952 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1314Q) has been classified as Likely pathogenic.
Frequency
Consequence
NM_001171.6 missense
Scores
Clinical Significance
Conservation
Publications
- arterial calcification, generalized, of infancy, 2Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
- autosomal recessive inherited pseudoxanthoma elasticumInheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Orphanet, Labcorp Genetics (formerly Invitae), G2P
- arterial calcification of infancyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Pathogenic. The variant received 12 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ABCC6 | NM_001171.6 | c.3940C>T | p.Arg1314Trp | missense_variant | Exon 28 of 31 | ENST00000205557.12 | NP_001162.5 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000598 AC: 91AN: 152108Hom.: 0 Cov.: 31 show subpopulations
GnomAD2 exomes AF: 0.000189 AC: 35AN: 184926 AF XY: 0.0000904 show subpopulations
GnomAD4 exome AF: 0.0000793 AC: 113AN: 1424726Hom.: 0 Cov.: 32 AF XY: 0.0000723 AC XY: 51AN XY: 705360 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000604 AC: 92AN: 152226Hom.: 0 Cov.: 31 AF XY: 0.000564 AC XY: 42AN XY: 74426 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Pathogenic:3
Published functional studies demonstrate a damaging effect with R1314W resulting in abnormal protein trafficking and inappropriate intracellular accumulation (Le Saux et al., 2011); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 16392638, 22209248, 10835642, 30537162, 34205333, 34906475, 21935449, 24008425, 19339160, 24352041, 23483032, 27994049, 28102862, 28416300, 27826008, 32445016, 31589614, 34440381, 33005041, 32873932) -
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 1314 of the ABCC6 protein (p.Arg1314Trp). This variant is present in population databases (rs63750759, gnomAD 0.3%). This missense change has been observed in individuals with pseudoxanthoma elasticum (PMID: 10835642, 16835894, 19339160, 30537162). ClinVar contains an entry for this variant (Variation ID: 6564). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt ABCC6 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects ABCC6 function (PMID: 21935449, 23483032, 27994049). This variant disrupts the p.Arg1314 amino acid residue in ABCC6. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 29722917). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -
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Autosomal recessive inherited pseudoxanthoma elasticum Pathogenic:2
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Arterial calcification, generalized, of infancy, 2 Pathogenic:1
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Autosomal recessive inherited pseudoxanthoma elasticum;C1867450:Pseudoxanthoma elasticum, forme fruste;C3276161:Arterial calcification, generalized, of infancy, 2 Pathogenic:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at