chr7-5987233-G-A
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The NM_000535.7(PMS2):c.1532C>T(p.Thr511Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00526 in 1,614,052 control chromosomes in the GnomAD database, including 283 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T511A) has been classified as Benign.
Frequency
Consequence
NM_000535.7 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -20 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0236 AC: 3595AN: 152122Hom.: 128 Cov.: 32
GnomAD3 exomes AF: 0.00811 AC: 2037AN: 251308Hom.: 62 AF XY: 0.00660 AC XY: 897AN XY: 135868
GnomAD4 exome AF: 0.00333 AC: 4868AN: 1461812Hom.: 149 Cov.: 43 AF XY: 0.00302 AC XY: 2193AN XY: 727194
GnomAD4 genome AF: 0.0238 AC: 3620AN: 152240Hom.: 134 Cov.: 32 AF XY: 0.0236 AC XY: 1759AN XY: 74420
ClinVar
Submissions by phenotype
not specified Benign:7Other:1
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The p.Thr511Met variant in PMS2 is classified as benign because it has been identified in 8.03% (2002/24922) of African chromosomes, including 81 homozygotes, by gnomAD (http://gnomad.broadinstitute.org). In addition, computational prediction and conservation tools suggest that this variant does not impact the protein. ACMG/AMP Criteria applied: BA1, BP4. -
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Hereditary cancer-predisposing syndrome Benign:6
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This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
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not provided Uncertain:1Benign:3
This variant is associated with the following publications: (PMID: 24728327, 27153395, 27884173, 24027009) -
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Lynch syndrome 4 Benign:4
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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. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Lynch syndrome Benign:2
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MAF >1% -
Breast and/or ovarian cancer Benign:1
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Hereditary nonpolyposis colorectal neoplasms Benign:1
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Malignant tumor of breast Benign:1
The PMS2 p.Thr511Met variant was identified in the literature however the frequency of this variant in an affected population was not provided. The variant was also identified in dbSNP (ID: rs74902811) as With other allele, ClinVar (classified as benign by InSight, Ambry Genetics, Prevention Genetics, Color Genimics, Invitae; classified as likely benign by Vantary genetics, Illumina), Clinvitae (classified with conflicting interpretations of pathogenicity), MutDB , Insight Colon Cancer Gene Variant Database (2X class1), Insight Hereditary Tumors Database (2X class1), databases. The variant was not identified in Cosmic, Zhejiang Colon Cancer Database, Mismatch Repair Genes Variant Database, databases. The variant was identified in control databases in 2670(84 homozygous) of 277088 chromosomes at a frequency of 0.009636 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Consortium Feb 27, 2017). The variant was identified in the following populations at a frequency greater than 1%: African in 1930 of 24008 chromosomes (freq: 0.08), EastAsian in 549 of 18862 chromosomes (freq: 0.029). In cell free assay by Drost (2013) the variant not classified as repair deficient and might be pathogenic with reduced penetrance. Tthe variant classified as benign by ACMG-AMP classification for consensus variants (Amendola 2016). The p.Thr511 residue is not conserved in mammals and four out of five computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; however, this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a difference in splicing. In summary, based on the above information this variant meets our laboratory's criteria to be classified as benign. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at