NM_000251.3:c.1781C>G

Variant names:

• chr2-47475046-C-G
• NM_000251.3:c.1781C>G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1 PM2 BP4_Moderate

The NM_000251.3(MSH2):​c.1781C>G​(p.Thr594Arg) 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. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. T594T) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: MSH2 NM_000251.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.79

Genes affected

MSH2 (HGNC:7325): (mutS homolog 2) This locus is frequently mutated in hereditary nonpolyposis colon cancer (HNPCC). When cloned, it was discovered to be a human homolog of the E. coli mismatch repair gene mutS, consistent with the characteristic alterations in microsatellite sequences (RER+ phenotype) found in HNPCC. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM1: In a helix (size 24) in uniprot entity MSH2_HUMAN there are 10 pathogenic changes around while only 2 benign (83%) in NM_000251.3
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.24813786).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MSH2	NM_000251.3	c.1781C>G	p.Thr594Arg	missense_variant	Exon 12 of 16	ENST00000233146.7	NP_000242.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MSH2	ENST00000233146.7	c.1781C>G	p.Thr594Arg	missense_variant	Exon 12 of 16	1	NM_000251.3	ENSP00000233146.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Uncertain	0.0
CADD	Benign	17
DANN	Benign	0.92
DEOGEN2	Benign	0.39	T;.;.;.
Eigen	Benign	-0.34
Eigen_PC	Benign	-0.13
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.87	D;D;D;D
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.25	T;T;T;T
MetaSVM	Benign	-0.39	T
MutationAssessor	Benign	0.99	L;.;.;.
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-1.4	N;N;.;N
REVEL	Uncertain	0.40
Sift	Benign	0.72	T;T;.;T
Sift4G	Benign	0.57	T;T;.;T
Polyphen		0.0	B;.;.;B
Vest4		0.57
MutPred		0.52		Gain of solvent accessibility (P = 0.1505);.;Gain of solvent accessibility (P = 0.1505);Gain of solvent accessibility (P = 0.1505);
MVP		0.96
MPC		0.0064
ClinPred		0.50	T
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.35
gMVP		0.70

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-47702185;