rs200872702

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_001048174.2(MUTYH):​c.583A>G​(p.Ile195Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000201 in 1,613,986 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 Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. I195I) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

MUTYH
NM_001048174.2 missense

Scores

9
10

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:31

Conservation

PhyloP100: 1.15
Variant links:
Genes affected
MUTYH (HGNC:7527): (mutY DNA glycosylase) This gene encodes a DNA glycosylase involved in oxidative DNA damage repair. The enzyme excises adenine bases from the DNA backbone at sites where adenine is inappropriately paired with guanine, cytosine, or 8-oxo-7,8-dihydroguanine, a major oxidatively damaged DNA lesion. The protein is localized to the nucleus and mitochondria. This gene product is thought to play a role in signaling apoptosis by the introduction of single-strand breaks following oxidative damage. Mutations in this gene result in heritable predisposition to colorectal cancer, termed MUTYH-associated polyposis (MAP). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2017]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1
In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 16 uncertain in NM_001048174.2
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.25944573).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MUTYHNM_001048174.2 linkc.583A>G p.Ile195Val missense_variant Exon 8 of 16 ENST00000456914.7 NP_001041639.1 Q9UIF7-6

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MUTYHENST00000456914.7 linkc.583A>G p.Ile195Val missense_variant Exon 8 of 16 1 NM_001048174.2 ENSP00000407590.2 Q9UIF7-6
ENSG00000288208ENST00000671898.1 linkn.1171A>G non_coding_transcript_exon_variant Exon 12 of 21 ENSP00000499896.1 A0A5F9ZGZ0

Frequencies

GnomAD3 genomes
AF:
0.0000986
AC:
15
AN:
152132
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000724
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000176
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000219
AC:
55
AN:
251390
Hom.:
0
AF XY:
0.000272
AC XY:
37
AN XY:
135888
show subpopulations
Gnomad AFR exome
AF:
0.000123
Gnomad AMR exome
AF:
0.000116
Gnomad ASJ exome
AF:
0.0000992
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000653
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000369
Gnomad OTH exome
AF:
0.000652
GnomAD4 exome
AF:
0.000211
AC:
309
AN:
1461854
Hom.:
0
Cov.:
36
AF XY:
0.000209
AC XY:
152
AN XY:
727236
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000157
Gnomad4 ASJ exome
AF:
0.0000383
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000580
Gnomad4 FIN exome
AF:
0.0000562
Gnomad4 NFE exome
AF:
0.000251
Gnomad4 OTH exome
AF:
0.000232
GnomAD4 genome
AF:
0.0000986
AC:
15
AN:
152132
Hom.:
0
Cov.:
33
AF XY:
0.0000807
AC XY:
6
AN XY:
74322
show subpopulations
Gnomad4 AFR
AF:
0.0000724
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000176
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000353
Hom.:
1
Bravo
AF:
0.000140
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000259
AC:
1
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000233
AC:
2
ExAC
AF:
0.000222
AC:
27
EpiCase
AF:
0.000327
EpiControl
AF:
0.000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:31
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Familial adenomatous polyposis 2 Uncertain:9
Nov 01, 2016
Center for Human Genetics, Inc, Center for Human Genetics, Inc
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 16, 2022
MGZ Medical Genetics Center
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Jun 01, 2018
Molecular Oncology Laboratory, Hospital Clínico San Carlos
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. -

Mar 18, 2024
Baylor Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Aug 06, 2024
All of Us Research Program, National Institutes of Health
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This missense variant replaces isoleucine with valine at codon 223 of the MUTYH protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). Functional studies have shown that this variant causes a mild reduction in MUTYH activity in an enzymatic assay (PMID: 20848659), but could complement the functional deficiency of MutY-null bacteria (PMID: 25820570). This variant has been reported in individuals affected with adenomatous polyposis, colorectal adenomas, colon cancer, breast and/or ovarian cancer, thyroid cancer, or prostate cancer (PMID: 16287072, 12606733, 17949294, 21195604, 20618354, 27705013, 29368341, 30333958, 30680046, 31285513, Oliveira et al. 2021). All reported probands were heterozygous for this variant. This variant has also been identified in 57/282728 chromosomes in the general population by the Genome Aggregation Database (gnomAD) and in a healthy control (PMID: 32980694). 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. -

Feb 02, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 223 of the MUTYH protein (p.Ile223Val). This variant is present in population databases (rs200872702, gnomAD 0.03%). This missense change has been observed in individual(s) with colorectal polyposis, colon cancer, breast cancer, prostate cancer, and individuals undergoing hereditary cancer predisposition testing (PMID: 12606733, 16287072, 17949294, 20618354, 21195604, 23383274, 27705013, 29368341, 31159747, 31214250, 31285513). ClinVar contains an entry for this variant (Variation ID: 127847). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on MUTYH function (PMID: 20848659, 25820570). 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. -

Jul 02, 2018
Mendelics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Dec 29, 2021
St. Jude Molecular Pathology, St. Jude Children's Research Hospital
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The MUTYH c.667A>G (p.Ile223Val) missense change has a maximum subpopulation frequency of 0.05% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/variant/1-45798269-T-C). Both in silico tools and functional assays are not in agreement about the effect of this variant on protein function. A complementation assay evaluating functional deficiency in E.coli demonstrated that glycosylase repair activity was comparable to the wildtype (PMID: 25820570), whereas another study showed a moderate impairment of adenine DNA glycosylase activity (PMID: 20848659). This variant has been reported in individuals with adenomatous polyposis (PMID: 12606733, 16287072, 30680046 ), colorectal cancer (PMID: 21195604, 20618354, 31285513), colorectal adenomas (PMID: 17949294), prostate cancer (PMID: 29368341), breast and/or ovarian cancer (PMID: 30333958), and found to co-occur with a pathogenic BRCA2 mutation (p.Glu2846Glyfs*22) in an individual with breast cancer (PMID: 25186627). This variant has been reported in a 60 year old male with >100 colorectal polyps with colorectal cancer who was compound heterozygous for this variant and the pathogenic p.Tyr179Cys (PM3; PMID: 27705013). This variant is also known as p.Ile195Val and p.Ile209Val in the literature. In summary, this variant meets criteria to be classified as of uncertain significance based on the ACMG/AMP criteria: PM3 -

not provided Uncertain:7
Feb 01, 2025
CeGaT Center for Human Genetics Tuebingen
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Oct 03, 2024
GeneDx
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Published functional studies are inconclusive: partially reduced glycosylase activity, but mutation rates comparable to wild type (PMID: 20848659, 25820570); Observed in individuals with multiple polyps and/or colorectal cancer, including one who also carried a pathogenic MUTYH variant (phase unknown), and also in individuals with breast or pancreatic cancer (PMID: 16287072, 21195604, 27705013, 27829682, 30680046, 31285513, 31214250, 32255556); In silico analysis indicates that this missense variant does not alter protein structure/function; Also known as Ile195Val or Ile209Val; This variant is associated with the following publications: (PMID: 20848659, 17949294, 19725997, 21235684, 27153395, 30333958, 25820570, 21195604, 16287072, 25569433, 12606733, 23507534, 17161978, 20618354, 23383274, 27829682, 27705013, 29368341, 28492532, 17581577, 31159747, 31214250, 31277343, 30680046, 31285513, 32255556, 20725929, 26377631, 25186627, 28199314, 35264596, 34326862, 35534704, 35980532, 27443514, 32980694) -

Nov 03, 2021
Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: not provided

- -

Oct 25, 2023
Quest Diagnostics Nichols Institute San Juan Capistrano
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The MUTYH c.667A>G (p.Ile223Val) variant has been reported in the published literature in individuals with classical or atypical adenomatous polyposis, colorectal cancer, prostate cancer, pancreatic cancer, or breast cancer (PMIDs: 12606733 (2003), 16287072 (2006), 17949294 (2007), 21195604 (2011), 23383274 (2013), 27829682 (2016), 27705013 (2016), 27153395 (2016), 29368341 (2018), and 32255556 (2020)). Experimental studies of this variants effects on MUTYH protein function have reported conflicting results (PMIDs: 20848659 (2010) and 25820570 (2015)). The frequency of this variant in the general population, 0.0019 (5/2670 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 conflicting predictions that this variant is benign or damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -

Hereditary cancer-predisposing syndrome Uncertain:6
Jan 12, 2018
True Health Diagnostics
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Jun 02, 2023
Institute for Biomarker Research, Medical Diagnostic Laboratories, L.L.C.
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 07, 2023
Color Diagnostics, LLC DBA Color Health
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This missense variant replaces isoleucine with valine at codon 223 of the MUTYH protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). Functional studies have shown that this variant causes a mild reduction in MUTYH activity in an enzymatic assay (PMID: 20848659), but could complement the functional deficiency of MutY-null bacteria (PMID: 25820570). This variant has been reported in individuals affected with adenomatous polyposis, colorectal adenomas, colon cancer, breast and/or ovarian cancer, thyroid cancer, or prostate cancer (PMID: 16287072, 12606733, 17949294, 21195604, 20618354, 27705013, 29368341, 30333958, 30680046, 31285513, Oliveira et al. 2021). All reported probands were heterozygous for this variant. This variant has also been identified in 57/282728 chromosomes in the general population by the Genome Aggregation Database (gnomAD) and in a healthy control (PMID: 32980694). 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. -

Feb 19, 2022
Sema4, Sema4
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: curation

- -

Jun 25, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.I223V variant (also known as c.667A>G), located in coding exon 8 of the MUTYH gene, results from an A to G substitution at nucleotide position 667. The isoleucine at codon 223 is replaced by valine, an amino acid with highly similar properties. This alteration has been described as heterozygous in individuals with polyposis but without second MUTYH or APC alterations (Sieber OM et al. N Engl J Med. 2003 Feb;348:791-9; Olschwang S et al. Genet. Test. 2007;11:315-20; Lorca V et al. Sci Rep. 2019 07;9:9814; Morak M et al. Clin Genet. 2010 Oct;78:353-63). A 60-year-old Italian patient with polyposis and colorectal cancer was found to have this variant in conjunction with the p.Tyr179Cys MUTYH founder mutation, although phase was not noted (Marabelli M et al. Genet Test Mol Biomarkers. 2016 12;20:777-785). The MUTYH p.I223V alteration has been reported to exhibit slightly lower glycosylation activity (66.9%) compared to wildtype (100%) and has been described as partially defective (Goto M et al. Hum Mutat. 2010 Nov;31:E1861-74; Komine K et al. Hum Mutat. 2015 Jul;36:704-11). Of note, this alteration is also designated as p.I209V (c.625A>G) and p.I195V in published literature. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -

Aug 01, 2018
GeneKor MSA
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not specified Uncertain:4
Nov 29, 2024
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Variant summary: MUTYH c.667A>G (p.Ile223Val) results in a conservative amino acid change located in the HhH-GPD domain (IPR003265) of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00022 in 252250 control chromosomes, predominantly at a frequency of 0.00037 within the Non-Finnish European subpopulation in the gnomAD database. This frequency is not significantly higher than estimated for a pathogenic variant in MUTYH causing MUTYH-Associated Polyposis (0.00022 vs 0.0046), allowing no conclusion about variant significance. c.667A>G has been widely reported in the literature in individuals affected with breast cancer, APC-negative polyposis, attenuated polyposis, as a non-reportable incidental finding in settings of WES, in compound heterozygosity with another MUTYH variant in a colorectal cancer patient with an autosomal dominant family history, and with a medium penetrance MUTYH variant in a colorectal cancer patient (e.g., Hilbers_2013, Sieber_2003, Russell_2006, Olschwang_2007, Morak_2010, Morak_2011, Jurgens_2015, Marabelli_2016, Tung_2015, Lorca_2019, Henn_2019, Yurgelun_2017, Maxwell_2016, Pereira_2022). These reports do not provide unequivocal conclusions about association of the variant with MUTYH-Associated Polyposis. At-least one co-occurrence with another pathogenic variant has been reported (BRCA2 c.8537_8538del, p. Glu2846Glyfs*22) in a patient with breast cancer, providing supporting evidence for a benign role (Tung_2015). Publications report experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in a moderate impairment of adenine DNA glycosylase activity (Goto_2010) which is contrasted by a normal activity in a functional complementation assay in E. coli (Komine_2015). The following publications have been ascertained in the context of this evaluation (PMID: 16287072, 25820570, 26377631, 17949294, 20725929, 17161978, 20848659, 25186627, 12606733, 20618354, 17581577, 23383274, 25569433, 21195604, 27705013, 27153395, 28135145, 29368341, 31285513, 30680046, 35980532). ClinVar contains an entry for this variant (Variation ID: 127847). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Feb 24, 2021
Genetic Services Laboratory, University of Chicago
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

DNA sequence analysis of the MUTYH gene demonstrated a sequence change, c.667A>G, in exon 8 that results in an amino acid change, p.Ile223Val. This sequence change has been described in the gnomAD database with a low population frequency of 0.02% (dbSNP rs200872702). The p.Ile223Val change affects a highly conserved amino acid residue located in a domain of the MUTYH protein that is known to be functional. In-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL) provide contradictory results for the p.Ile223Val substitution. The c.667A>G (p.Ille223Val) sequence change has been reported in the heterozygous state in individuals affected with familial adenomatous polyposis, colorectal adenomas and colon cancer (PMIDs:16287072, 21195604, 20618354, 27705013, 27829682). Functional studies report contradictory results. In vitro studies showed that the protein with this variant had slightly decreased glycosylase activity; however, it had comparable activity in comparison to wild-type protein in a functional complementation assay in E. coli (PMIDs: 20848659, 25820570). Due to these contrasting evidences, the clinical significance of the p.Ile223Val change remains unknown at this time. -

Jan 25, 2017
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.Ile223Val variant in MUTYH has been reported in 4 individuals with adenoma tous polyposis as well as in 3 affected relatives from 1 family (Sieber 2003, Ru ssell 2006, Morak 2010, Morak 2011). However, no second MUTYH variant was detect ed in any of the affected individuals. This variant has been identified in 43/12 6744 of European chromosomes by the Genome Aggregation Database (gnomAD, http:// gnomad.broadinstitute.org/; dbSNP rs200872702). In vitro functional studies are conflicting with one study suggesting partial impact on protein function and ano ther study suggesting no impact (Goto 2010, Komine 2015). However, these types o f assays may not accurately represent biological function. Additionally, computa tional prediction tools and conservation analysis do not provide strong support for or against an impact to the protein. In summary, the clinical significance o f the p.Ile223Val variant is uncertain. -

Mar 04, 2025
Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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Carcinoma of colon Uncertain:1
-
Department of Pathology and Laboratory Medicine, Sinai Health System
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

The MUTYH p.Ile223Val variant was identified in 3 of 878 proband chromosomes (frequency: 0.003) from individuals or families with colorectal adenomas, FAP, or classic polyposis and was not identified in 214 control chromosomes from healthy individuals (Oliver 2003, Olschwang 2007, Russell 2006). The variant was also identified in dbSNP (ID: rs200872702) as "With Uncertain significance allele", ClinVar (classified as uncertain significance by Invitae, Ambry Genetics, GeneDx and nine other submitters), and in UMD-LSDB (1x as unclassified variant). The variant was identified in control databases in 55 of 277080 chromosomes at a frequency of 0.0003 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: African in 1 of 23992 chromosomes (freq: 0.00004), Other in 4 of 6462 chromosomes (freq: 0.0006), Latino in 4 of 34418 chromosomes (freq: 0.0001), European in 43 of 126640 chromosomes (freq: 0.0003), Ashkenazi Jewish in 1 of 10152 chromosomes (freq: 0.0001), South Asian in 2 of 30782 chromosomes (freq: 0.00007), while the variant was not observed in the East Asian, and Finnish populations. To understand the functional consequences of this variant, 47 MUTYH gene variants were generated via site-directed mutagenesis, expressed in MutY - disrupted Escherichia coli, and assessed for their ability to complement the functional deficiency in the E. coli by monitoring spontaneous mutation rates (Komine, 2015). The p.Ile223Val variant retained function but was only partially active in the glycosylase assay. In addition, Morak et al. describe evidence for digenic inheritance in hereditary colorectal cancer with mutations in the base excision repair genes. In a single case, a germline paternal mutation in OGG1, in combination with a maternal MUTYH p.Ile223Val mutation was identified in a female patient with advanced synchronous colon cancer and adenomas at the age of 36 years. This could point towards digenic inheritance for colorectal cancer (CRC) predisposition (Morak 2011), although this remains a single case. The p.Ile223 residue is conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance. -

Gastric cancer;C3272841:Familial adenomatous polyposis 2 Uncertain:1
Jun 25, 2024
Fulgent Genetics, Fulgent Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Familial adenomatous polyposis 1 Uncertain:1
Dec 11, 2024
Department of Clinical Genetics, Medical University of Lodz
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Inherited polyposis and early onset colorectal cancer - germline testing Uncertain:1
Nov 06, 2024
Genomics and Molecular Medicine Service, East Genomic Laboratory Hub, NHS Genomic Medicine Service
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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Diffuse midline glioma, H3 K27-altered Uncertain:1
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Laboratory of Medical Genetics Unit, Bambino Gesù Children's Hospital
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: research

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Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.078
BayesDel_addAF
Benign
-0.018
T
BayesDel_noAF
Uncertain
0.050
CADD
Benign
19
DANN
Uncertain
1.0
DEOGEN2
Benign
0.11
.;.;.;.;.;T;.;.;.;T;.;T
Eigen
Uncertain
0.33
Eigen_PC
Uncertain
0.38
FATHMM_MKL
Uncertain
0.76
D
LIST_S2
Uncertain
0.90
.;D;.;D;D;D;D;D;D;D;D;D
M_CAP
Benign
0.076
D
MetaRNN
Benign
0.26
T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
0.46
D
MutationAssessor
Benign
0.93
.;.;.;.;.;L;.;.;.;.;.;.
PrimateAI
Uncertain
0.54
T
PROVEAN
Benign
-0.76
N;N;N;N;N;N;N;N;N;N;N;N
REVEL
Uncertain
0.61
Sift
Benign
0.051
T;D;T;T;T;D;T;T;D;T;T;T
Sift4G
Benign
0.15
T;T;T;T;T;T;T;T;T;T;T;T
Polyphen
0.96, 0.95
.;.;.;.;.;D;P;.;D;.;.;.
Vest4
0.40
MVP
0.93
MPC
0.27
ClinPred
0.034
T
GERP RS
5.4
Varity_R
0.16
gMVP
0.39

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs200872702; hg19: chr1-45798269; COSMIC: COSV100587884; COSMIC: COSV100587884; API