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rs775498550

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP6_Moderate

The NM_000179.3(MSH6):c.146C>A(p.Ala49Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000125 in 1,593,788 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A49V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

MSH6
NM_000179.3 missense

Scores

2
4
12

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.145
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP6
Variant 2-47783379-C-A is Benign according to our data. Variant chr2-47783379-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 2996818.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
MSH6NM_000179.3 linkuse as main transcriptc.146C>A p.Ala49Asp missense_variant 1/10 ENST00000234420.11

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
MSH6ENST00000234420.11 linkuse as main transcriptc.146C>A p.Ala49Asp missense_variant 1/101 NM_000179.3 P4P52701-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152174
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000489
AC:
1
AN:
204472
Hom.:
0
AF XY:
0.00000881
AC XY:
1
AN XY:
113484
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000326
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS 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:
6.94e-7
AC:
1
AN:
1441614
Hom.:
0
Cov.:
32
AF XY:
0.00000140
AC XY:
1
AN XY:
715844
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000237
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152174
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
74342
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000654
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
ExAC
AF:
0.0000173
AC:
2

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Hereditary nonpolyposis colorectal neoplasms Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeDec 03, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.14
BayesDel_addAF
Benign
0.0011
T
BayesDel_noAF
Benign
-0.14
Cadd
Benign
21
Dann
Uncertain
0.98
Eigen
Benign
0.091
Eigen_PC
Benign
0.10
FATHMM_MKL
Benign
0.21
N
LIST_S2
Benign
0.75
T;T
M_CAP
Pathogenic
0.99
D
MetaRNN
Uncertain
0.48
T;T
MetaSVM
Uncertain
-0.11
T
MutationAssessor
Benign
0.81
L;L
MutationTaster
Benign
0.89
D;N
PrimateAI
Pathogenic
0.85
D
PROVEAN
Benign
-0.57
N;N
REVEL
Uncertain
0.34
Sift
Benign
0.11
T;D
Sift4G
Benign
0.58
T;T
Polyphen
0.95
.;P
Vest4
0.42
MutPred
0.17
Gain of relative solvent accessibility (P = 0.0215);Gain of relative solvent accessibility (P = 0.0215);
MVP
0.88
ClinPred
0.84
D
GERP RS
3.8
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
2.7
Varity_R
0.18
gMVP
0.49

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: rs775498550; hg19: chr2-48010518; API