rs148189486
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_014391.3(ANKRD1):c.313C>T(p.Pro105Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000346 in 1,612,126 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 Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_014391.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ANKRD1 | NM_014391.3 | c.313C>T | p.Pro105Ser | missense_variant | Exon 3 of 9 | ENST00000371697.4 | NP_055206.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000344 AC: 52AN: 151194Hom.: 0 Cov.: 31
GnomAD3 exomes AF: 0.000156 AC: 39AN: 250210Hom.: 0 AF XY: 0.000170 AC XY: 23AN XY: 135288
GnomAD4 exome AF: 0.000346 AC: 506AN: 1460932Hom.: 0 Cov.: 32 AF XY: 0.000310 AC XY: 225AN XY: 726756
GnomAD4 genome AF: 0.000344 AC: 52AN: 151194Hom.: 0 Cov.: 31 AF XY: 0.000203 AC XY: 15AN XY: 73778
ClinVar
Submissions by phenotype
not provided Uncertain:2
Reported in association with cardiomyopathy in individuals in published literature (Moulik et al., 2009); Reported in one individual from a cohort of individuals not selected for cardiomyopathy, arrhythmia, or family history of sudden cardiac death, who underwent exome sequencing (Ng et al., 2013); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; In silico analysis is inconclusive as to whether the variant alters gene splicing; however, in the absence of RNA/functional studies, the actual effect of this sequence change is unknown; This variant is associated with the following publications: (PMID: 23299917, 19608030, 26187847, 27896284, 28672880, 30659708, 34426522, 30847666, 23861362) -
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Primary dilated cardiomyopathy Uncertain:1Benign:1
This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -
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ANKRD1-related dilated cardiomyopathy Uncertain:1
This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 105 of the ANKRD1 protein (p.Pro105Ser). This variant is present in population databases (rs148189486, gnomAD 0.03%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with clinical features of ANKRD1-related conditions (PMID: 19608030, 30847666). ClinVar contains an entry for this variant (Variation ID: 192112). 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 not expected to disrupt ANKRD1 protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change affects ANKRD1 function (PMID: 19608030). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Cardiovascular phenotype Uncertain:1
The p.P105S variant (also known as c.313C>T), located in coding exon 3 of the ANKRD1 gene, results from a C to T substitution at nucleotide position 313. The proline at codon 105 is replaced by serine, an amino acid with similar properties. This alteration was described in individuals with dilated cardiomyopathy but no segregation information was available (Moulik M et al. J. Am. Coll. Cardiol., 2009 Jul;54:325-33). This alteration has also been seen in exome cohorts, but cardiovascular history was not provided (Andreasen C et al. Eur. J. Hum. Genet., 2013 Sep;21:918-28; Ng D et al. Circ Cardiovasc Genet, 2013 Aug;6:337-46). This alteration was reported to disrupt Talin-1 binding in a yeast two hybrid system. In addition, the same study also found that during mechanical stretch, this alteration would decrease P53 expression while increasing myogenin expression (Moulik M et al. J. Am. Coll. Cardiol., 2009 Jul;54:325-33). This amino acid position is well conserved in available vertebrate species; however, serine is the reference amino acid in another vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at