Genetic Variant MUTYH:p.Gly216Glu (chr1-45332617-C-T) – ACMG Classification: Likely_pathogenic (9 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1PM5PP3_StrongPP5

The NM_001048174.2(MUTYH):c.563G>A(p.Gly188Glu) variant causes a missense change. The variant allele was found at a frequency of 0.0000041 in 1,461,872 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. G188W) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

MUTYH
NM_001048174.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:7U:3

Conservation

PhyloP100: 5.84

Publications

8 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 9 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, 48 uncertain in NM_001048174.2

PM5

Other missense variant is known to change same aminoacid residue: Variant chr1-45332618-C-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 3914937.Status of the report is criteria_provided_single_submitter, 1 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.99

PP5

Variant 1-45332617-C-T is Pathogenic according to our data. Variant chr1-45332617-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 231491.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001048174.2. 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.647G>A	p.Gly216Glu	missense	Exon 8 of 16	NP_001121897.1	E5KP25
MUTYH	NM_001048174.2	MANE Select	c.563G>A	p.Gly188Glu	missense	Exon 8 of 16	NP_001041639.1	Q9UIF7-6
MUTYH	NM_012222.3		c.638G>A	p.Gly213Glu	missense	Exon 8 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.647G>A	p.Gly216Glu	missense	Exon 8 of 16	ENSP00000518552.2	E5KP25
MUTYH	ENST00000456914.7	TSL:1 MANE Select	c.563G>A	p.Gly188Glu	missense	Exon 8 of 16	ENSP00000407590.2	Q9UIF7-6
MUTYH	ENST00000372098.7	TSL:1	c.638G>A	p.Gly213Glu	missense	Exon 8 of 16	ENSP00000361170.3	Q9UIF7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000795

AC:

AN:

251430

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

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

AF:

0.00000410

AC:

AN:

1461872

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000447

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

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 (4)

Hereditary cancer-predisposing syndrome (3)

not provided (3)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.90

BayesDel_addAF

Pathogenic

0.44

BayesDel_noAF

Pathogenic

0.57

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.65

Eigen

Pathogenic

0.96

Eigen_PC

Pathogenic

0.84

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

1.0

M_CAP

Pathogenic

0.45

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.92

MutationAssessor

Pathogenic

4.3

PhyloP100

5.8

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-7.4

REVEL

Pathogenic

0.96

Sift

Benign

0.043

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.96

MutPred

0.97

Loss of methylation at R217 (P = 0.0496)

MVP

0.99

MPC

0.63

ClinPred

1.0

GERP RS

5.4

PromoterAI

0.016

Neutral

(source)

Varity_R

0.97

gMVP

0.97

Mutation Taster

=0/100

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over