rs1553126588

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4BP6

The NM_001128425.2(MUTYH):​c.1094A>T​(p.Lys365Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,746 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K365N) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MUTYH
NM_001128425.2 missense

Scores

6
12

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: -0.349

Publications

0 publications found
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]
MUTYH Gene-Disease associations (from GenCC):
  • familial adenomatous polyposis 2
    Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, ClinGen, G2P
  • colorectal cancer
    Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
  • familial ovarian cancer
    Inheritance: AD, AR Classification: NO_KNOWN Submitted by: ClinGen
  • hereditary breast carcinoma
    Inheritance: AD, AR Classification: NO_KNOWN Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.31916726).
BP6
Variant 1-45331753-T-A is Benign according to our data. Variant chr1-45331753-T-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 491998.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MUTYHNM_001128425.2 linkc.1094A>T p.Lys365Met missense_variant Exon 12 of 16 ENST00000710952.2 NP_001121897.1
MUTYHNM_001048174.2 linkc.1010A>T p.Lys337Met missense_variant Exon 12 of 16 ENST00000456914.7 NP_001041639.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MUTYHENST00000710952.2 linkc.1094A>T p.Lys365Met missense_variant Exon 12 of 16 NM_001128425.2 ENSP00000518552.2
MUTYHENST00000456914.7 linkc.1010A>T p.Lys337Met missense_variant Exon 12 of 16 1 NM_001048174.2 ENSP00000407590.2
ENSG00000288208ENST00000671898.1 linkn.1598A>T non_coding_transcript_exon_variant Exon 16 of 21 ENSP00000499896.1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1461746
Hom.:
0
Cov.:
33
AF XY:
0.00000138
AC XY:
1
AN XY:
727168
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44718
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26128
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.0000232
AC:
2
AN:
86254
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53374
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111942
Other (OTH)
AF:
0.00
AC:
0
AN:
60386
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:3Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
Dec 04, 2023
Color Diagnostics, LLC DBA Color Health
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This missense variant replaces lysine with methionine at codon 365 of the MUTYH protein. 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. This variant has not been reported in individuals affected with MUTYH-related disorders in the literature. This variant has not been identified 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.

Aug 19, 2025
Ambry Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as likely 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.

not specified Uncertain:1
Sep 08, 2022
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Familial adenomatous polyposis 2 Uncertain:1
Apr 24, 2019
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces lysine with methionine at codon 365 of the MUTYH protein (p.Lys365Met). The lysine residue is moderately conserved and there is a moderate physicochemical difference between lysine and methionine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with MUTYH-related conditions. ClinVar contains an entry for this variant (Variation ID: 491998). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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.

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.31
BayesDel_addAF
Uncertain
0.060
T
BayesDel_noAF
Benign
-0.15
CADD
Benign
13
DANN
Benign
0.95
DEOGEN2
Benign
0.0
.;.;.;.;.;T;.;.;.;T;.
Eigen
Benign
-0.85
Eigen_PC
Benign
-1.2
FATHMM_MKL
Benign
0.53
D
LIST_S2
Benign
0.0
.;D;.;D;D;D;D;D;D;D;D
M_CAP
Uncertain
0.12
D
MetaRNN
Benign
0.32
T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
0.59
D
MutationAssessor
Benign
0.0
.;.;.;.;.;H;.;.;.;.;.
PhyloP100
-0.35
PrimateAI
Benign
0.33
T
PROVEAN
Uncertain
-2.9
D;D;D;D;D;D;D;D;D;.;D
REVEL
Uncertain
0.49
Sift
Benign
0.034
D;D;D;D;D;D;D;D;D;.;D
Sift4G
Uncertain
0.041
D;D;D;D;D;D;D;D;D;D;D
Vest4
0.37
ClinPred
0.99
D
GERP RS
-11
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.15
gMVP
0.73
Mutation Taster
=64/36
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs1553126588; hg19: chr1-45797425; API