rs28939702
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM1PM5PP3_ModeratePP5_Very_Strong
The NM_001171.6(ABCC6):c.4015C>T(p.Arg1339Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000478 in 1,611,470 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R1339H) has been classified as Pathogenic.
Frequency
Consequence
NM_001171.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ABCC6 | NM_001171.6 | c.4015C>T | p.Arg1339Cys | missense_variant | Exon 28 of 31 | ENST00000205557.12 | NP_001162.5 | |
ABCC6 | NM_001351800.1 | c.3673C>T | p.Arg1225Cys | missense_variant | Exon 28 of 31 | NP_001338729.1 | ||
ABCC6 | NR_147784.1 | n.3677C>T | non_coding_transcript_exon_variant | Exon 26 of 29 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000329 AC: 5AN: 152080Hom.: 0 Cov.: 31
GnomAD3 exomes AF: 0.0000825 AC: 20AN: 242560Hom.: 0 AF XY: 0.0000912 AC XY: 12AN XY: 131512
GnomAD4 exome AF: 0.0000493 AC: 72AN: 1459390Hom.: 0 Cov.: 32 AF XY: 0.0000579 AC XY: 42AN XY: 725804
GnomAD4 genome AF: 0.0000329 AC: 5AN: 152080Hom.: 0 Cov.: 31 AF XY: 0.0000404 AC XY: 3AN XY: 74290
ClinVar
Submissions by phenotype
Autosomal recessive inherited pseudoxanthoma elasticum Pathogenic:4
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PM2_Supporting+PM5_Supporting+PS3_Moderate+PM3_Strong+PP1_Moderate -
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not provided Pathogenic:2
This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 1339 of the ABCC6 protein (p.Arg1339Cys). This variant is present in population databases (rs28939702, gnomAD 0.02%). This missense change has been observed in individuals with pseudoxanthoma elasticum (PMID: 10954200, 12384774). ClinVar contains an entry for this variant (Variation ID: 6576). 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: 24352041, 27994049). This variant disrupts the p.Arg1339 amino acid residue in ABCC6. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 16086317, 18157818). 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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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at