rs1553408414

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_000179.3(MSH6):​c.234A>C​(p.Arg78Ser) 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 benign outcome for this variant. 14/20 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. R78G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

MSH6
NM_000179.3 missense

Scores

1
2
16

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.0520
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 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 3 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=0.16528437).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
MSH6NM_000179.3 linkuse as main transcriptc.234A>C p.Arg78Ser missense_variant 1/10 ENST00000234420.11

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
MSH6ENST00000234420.11 linkuse as main transcriptc.234A>C p.Arg78Ser missense_variant 1/101 NM_000179.3 P4P52701-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
34
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.17
BayesDel_addAF
Benign
-0.060
T
BayesDel_noAF
Benign
-0.32
CADD
Benign
18
DANN
Benign
0.95
DEOGEN2
Benign
0.24
.;T;T
Eigen
Benign
-0.92
Eigen_PC
Benign
-0.94
FATHMM_MKL
Benign
0.039
N
LIST_S2
Benign
0.76
T;T;T
M_CAP
Pathogenic
0.86
D
MetaRNN
Benign
0.17
T;T;T
MetaSVM
Benign
-0.73
T
MutationAssessor
Benign
0.20
N;N;.
MutationTaster
Benign
1.0
N;N
PrimateAI
Uncertain
0.77
T
PROVEAN
Benign
-0.42
N;N;.
REVEL
Benign
0.20
Sift
Uncertain
0.012
D;D;.
Sift4G
Benign
0.12
T;T;T
Polyphen
0.0040
.;B;.
Vest4
0.22
MutPred
0.21
Loss of MoRF binding (P = 0.0269);Loss of MoRF binding (P = 0.0269);.;
MVP
0.65
ClinPred
0.049
T
GERP RS
0.39
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.2
Varity_R
0.12
gMVP
0.30

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.14
Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-48010606; API