rs144616312
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_001048174.2(MUTYH):c.1516C>T(p.Arg506Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000378 in 1,614,096 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R506P) has been classified as Uncertain significance.
Frequency
Consequence
NM_001048174.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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MUTYH | ENST00000456914.7 | c.1516C>T | p.Arg506Trp | missense_variant | Exon 16 of 16 | 1 | NM_001048174.2 | ENSP00000407590.2 | ||
ENSG00000288208 | ENST00000671898.1 | n.*259C>T | non_coding_transcript_exon_variant | Exon 21 of 21 | ENSP00000499896.1 | |||||
ENSG00000288208 | ENST00000671898.1 | n.*259C>T | 3_prime_UTR_variant | Exon 21 of 21 | ENSP00000499896.1 |
Frequencies
GnomAD3 genomes AF: 0.0000394 AC: 6AN: 152206Hom.: 0 Cov.: 31
GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251494Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135922
GnomAD4 exome AF: 0.0000376 AC: 55AN: 1461890Hom.: 0 Cov.: 31 AF XY: 0.0000371 AC XY: 27AN XY: 727244
GnomAD4 genome AF: 0.0000394 AC: 6AN: 152206Hom.: 0 Cov.: 31 AF XY: 0.0000269 AC XY: 2AN XY: 74356
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:4
The p.R534W variant (also known as c.1600C>T), located in coding exon 16 of the MUTYH gene, results from a C to T substitution at nucleotide position 1600. The arginine at codon 534 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is poorly conserved in available vertebrate species, and tryptophan is the reference amino acid in other vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -
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This missense variant replaces arginine with tryptophan at codon 534 of the MUTYH protein. This variant is also known as c.1516C>T (p.Arg506Trp) based on the NM_001048174.2 transcript. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. In a large international case-control study, this variant was reported in 6/60466 breast cancer cases and 5/53461 controls (OR=1.061, 95%CI 0.324 to 3.477, p-value=1; PMID: 33471991). This variant has also been reported in an individual affected with multiform glioblastoma (PMID: 26689913). This variant has been identified in 3/282896 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Familial adenomatous polyposis 2 Uncertain:3
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 534 of the MUTYH protein (p.Arg534Trp). This variant is present in population databases (rs144616312, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with MUTYH-related conditions. ClinVar contains an entry for this variant (Variation ID: 127842). An algorithm developed to predict the effect of missense changes on protein structure and function outputs the following: PolyPhen-2: "Benign". The tryptophan amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -
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This missense variant replaces arginine with tryptophan at codon 534 of the MUTYH protein. This variant is also known as c.1516C>T (p.Arg506Trp) based on the NM_001048174.2 transcript. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. In a large international case-control study, this variant was reported in 6/60466 breast cancer cases and 5/53461 controls (OR=1.061, 95%CI 0.324 to 3.477, p-value=1; PMID: 33471991). This variant has also been reported in an individual affected with multiform glioblastoma (PMID: 26689913). This variant has been identified in 3/282896 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
not provided Uncertain:2
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 25340522, 28166811, 11092888, 23108399, 26689913, 33471991) -
The MUTYH c.1600C>T (p.Arg534Trp) variant has been reported in the published literature in individuals affected with glioblastoma (PMID: 26689913 (2015)) and breast cancer (PMID: 33471991 (2021), see also LOVD (http://databases.lovd.nl/shared/genes/MUTYH)). This variant has also been identified in at least one reportedly healthy individual (PMID: 33471991 (2021), see also LOVD (http://databases.lovd.nl/shared/genes/MUTYH)). The frequency of this variant in the general population, 0.000011 (3/282896 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -
not specified Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at