rs878853751

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_000179.3(MSH6):​c.98G>A​(p.Arg33His) 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 1,457,610 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R33G) has been classified as Likely benign.

Frequency

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

Consequence

MSH6
NM_000179.3 missense

Scores

3
16

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.08

Publications

4 publications found
Variant links:
Genes affected
MSH6 (HGNC:7329): (mutS homolog 6) This gene encodes a member of the DNA mismatch repair MutS family. In E. coli, the MutS protein helps in the recognition of mismatched nucleotides prior to their repair. A highly conserved region of approximately 150 aa, called the Walker-A adenine nucleotide binding motif, exists in MutS homologs. The encoded protein heterodimerizes with MSH2 to form a mismatch recognition complex that functions as a bidirectional molecular switch that exchanges ADP and ATP as DNA mismatches are bound and dissociated. Mutations in this gene may be associated with hereditary nonpolyposis colon cancer, colorectal cancer, and endometrial cancer. Transcripts variants encoding different isoforms have been described. [provided by RefSeq, Jul 2013]
MSH6 Gene-Disease associations (from GenCC):
  • Lynch syndrome
    Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, ClinGen, Orphanet
  • Lynch syndrome 5
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Genomics England PanelApp
  • mismatch repair cancer syndrome 1
    Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
  • mismatch repair cancer syndrome 3
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), G2P
  • ovarian cancer
    Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
  • malignant pancreatic neoplasm
    Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
  • Muir-Torre syndrome
    Inheritance: AD Classification: MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
  • rhabdomyosarcoma
    Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
  • breast cancer
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
  • prostate cancer
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
  • hereditary breast carcinoma
    Inheritance: AD 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 2 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 13 benign, 16 uncertain in NM_000179.3
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.14273492).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MSH6NM_000179.3 linkc.98G>A p.Arg33His missense_variant Exon 1 of 10 ENST00000234420.11 NP_000170.1 P52701-1Q3SWU9

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MSH6ENST00000234420.11 linkc.98G>A p.Arg33His missense_variant Exon 1 of 10 1 NM_000179.3 ENSP00000234420.5 P52701-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00
AC:
0
AN:
234218
AF XY:
0.00
Gnomad AFR exome
AF:
0.00
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
AF:
0.00000137
AC:
2
AN:
1457610
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
725036
show subpopulations
African (AFR)
AF:
0.0000300
AC:
1
AN:
33292
American (AMR)
AF:
0.00
AC:
0
AN:
44554
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26052
East Asian (EAS)
AF:
0.0000253
AC:
1
AN:
39594
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86006
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51702
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5756
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1110496
Other (OTH)
AF:
0.00
AC:
0
AN:
60158
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.500
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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.:
33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.17
BayesDel_addAF
Benign
-0.095
T
BayesDel_noAF
Benign
-0.37
CADD
Benign
12
DANN
Uncertain
0.99
DEOGEN2
Benign
0.26
.;T;T
Eigen
Benign
-0.85
Eigen_PC
Benign
-0.92
FATHMM_MKL
Benign
0.013
N
LIST_S2
Benign
0.80
T;T;T
M_CAP
Uncertain
0.21
D
MetaRNN
Benign
0.14
T;T;T
MetaSVM
Benign
-0.56
T
MutationAssessor
Benign
0.0
N;N;.
PhyloP100
-1.1
PrimateAI
Uncertain
0.71
T
PROVEAN
Benign
0.14
N;N;.
REVEL
Benign
0.24
Sift
Benign
0.050
D;T;.
Sift4G
Benign
0.15
T;T;T
Polyphen
0.20
.;B;.
Vest4
0.15
MutPred
0.31
Loss of methylation at R33 (P = 0.0027);Loss of methylation at R33 (P = 0.0027);Loss of methylation at R33 (P = 0.0027);
MVP
0.76
ClinPred
0.12
T
GERP RS
1.1
PromoterAI
0.25
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.2
Varity_R
0.036
gMVP
0.34
Mutation Taster
=96/4
polymorphism

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

Other links and lift over

dbSNP: rs878853751; hg19: chr2-48010470; API