Genetic Variant NM_001128425.2:c.697G>C (chr1-45332482-C-G) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate

The NM_001128425.2(MUTYH):c.697G>C(p.Gly233Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. G233D) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Consequence

MUTYH
NM_001128425.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:5

Conservation

PhyloP100: 2.98

Publications

1 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: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen, G2P, Orphanet
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: AR, AD Classification: NO_KNOWN Submitted by: ClinGen

MUTYH links:

ENSG00000288208 (HGNC:):

ENSG00000288208 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM1

In a hotspot region, there are 11 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 40 uncertain in NM_001128425.2

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.842

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001128425.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MUTYH	NM_001128425.2	MANE Plus Clinical	c.697G>C	p.Gly233Arg	missense	Exon 9 of 16	NP_001121897.1	E5KP25
MUTYH	NM_001048174.2	MANE Select	c.613G>C	p.Gly205Arg	missense	Exon 9 of 16	NP_001041639.1	Q9UIF7-6
MUTYH	NM_012222.3		c.688G>C	p.Gly230Arg	missense	Exon 9 of 16	NP_036354.1	Q9UIF7-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MUTYH	ENST00000710952.2	MANE Plus Clinical	c.697G>C	p.Gly233Arg	missense	Exon 9 of 16	ENSP00000518552.2	E5KP25
MUTYH	ENST00000456914.7	TSL:1 MANE Select	c.613G>C	p.Gly205Arg	missense	Exon 9 of 16	ENSP00000407590.2	Q9UIF7-6
MUTYH	ENST00000372098.7	TSL:1	c.688G>C	p.Gly230Arg	missense	Exon 9 of 16	ENSP00000361170.3	Q9UIF7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250604

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.0000621

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Familial adenomatous polyposis 2 (2)

Hereditary cancer-predisposing syndrome (2)

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.70

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Pathogenic

0.26

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.54

Eigen

Benign

-0.027

Eigen_PC

Benign

-0.17

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

M_CAP

Pathogenic

0.35

MetaRNN

Pathogenic

0.84

MetaSVM

Uncertain

0.46

MutationAssessor

Uncertain

2.8

PhyloP100

3.0

PrimateAI

Uncertain

0.67

PROVEAN

Uncertain

-4.3

REVEL

Pathogenic

0.72

Sift

Uncertain

0.027

Sift4G

Uncertain

0.054

Polyphen

0.97

Vest4

0.67

MVP

0.88

MPC

0.60

ClinPred

0.82

GERP RS

1.7

PromoterAI

0.0091

Neutral

(source)

Varity_R

0.97

gMVP

0.93

Mutation Taster

=33/67

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over