rs1442557180

Variant names:

• chr2-47403392-G-C
• rs1442557180
• NM_000251.3:c.201G>C
• MSH2 p.Met67Ile

Your query was ambiguous. Multiple possible variants found:

• chr2-47403392-G-C
• chr2-47403392-G-A

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 10P and 1B. PVS1 PM2 BP6

The NM_001258281.1(MSH2):​c.3G>C​(p.Met1?) variant causes a start lost 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. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). The gene MSH2 is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MSH2 NM_001258281.1 start_lost
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: 0.0860
• Publications: 4 publications found

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]

MSH2 Gene-Disease associations (from GenCC):

• Lynch syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet, ClinGen
• Lynch syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Muir-Torre syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Genomics England PanelApp
• mismatch repair cancer syndrome 1

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• mismatch repair cancer syndrome 2

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: 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
• prostate cancer

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• rhabdomyosarcoma

  Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
• breast cancer

  Inheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics
• hereditary breast carcinoma

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Specifications for MSH2 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

• PVS1: Start lost variant, next in-frame start position is after 38 pathogenic variants. Next in-frame start position is after 17 codons. Genomic position: 47408436. Lost 0.019 part of the original CDS.
• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 2-47403392-G-C is Benign according to our data. Variant chr2-47403392-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 525650.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001258281.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSH2	NM_000251.3	MANE Select	c.201G>C	p.Met67Ile	missense	Exon 1 of 16	NP_000242.1	P43246-1
	MSH2	NM_001258281.1		c.3G>C	p.Met1?	start_lost	Exon 2 of 17	NP_001245210.1	P43246-2
	MSH2	NM_001406674.1		c.201G>C	p.Met67Ile	missense	Exon 1 of 18	NP_001393603.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSH2	ENST00000233146.7	TSL:1 MANE Select	c.201G>C	p.Met67Ile	missense	Exon 1 of 16	ENSP00000233146.2	P43246-1
	MSH2	ENST00000406134.5	TSL:1	c.201G>C	p.Met67Ile	missense	Exon 1 of 16	ENSP00000384199.1	E9PHA6
	MSH2	ENST00000543555.6	TSL:2	c.3G>C	p.Met1?	start_lost	Exon 2 of 17	ENSP00000442697.1	P43246-2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000442 AC: 1 AN: 226206 AF XY: 0.00000804

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: 0.00000995

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.91e-7 AC: 1 AN: 1447890 Hom.: 0 Cov.: 31 AF XY: 0.00000139 AC XY: 1 AN XY: 718266

African (AFR) AF: 0.00 AC: 0 AN: 33294

American (AMR) AF: 0.00 AC: 0 AN: 43358

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25742

East Asian (EAS) AF: 0.00 AC: 0 AN: 39194

South Asian (SAS) AF: 0.00 AC: 0 AN: 84588

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51512

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5110

European-Non Finnish (NFE) AF: 9.05e-7 AC: 1 AN: 1105376

Other (OTH) AF: 0.00 AC: 0 AN: 59716

GnomAD4 genome Cov.: 33

Alfa AF: 0.000111 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	1	Hereditary cancer-predisposing syndrome (1)
-	1	-	Hereditary nonpolyposis colorectal neoplasms (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Uncertain	0.046	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	16
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.43	T
Eigen	Benign	-0.62
Eigen_PC	Benign	-0.47
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.77	T
M_CAP	Benign	0.066	D
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.76	T
MutationAssessor	Benign	-0.24	N
PhyloP100		0.086
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-0.35	N
REVEL	Uncertain	0.33
Sift	Benign	0.23	T
Sift4G	Benign	0.21	T
PromoterAI		0.041	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.46
gMVP		0.32
Mutation Taster		=32/168	disease causing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1442557180;

hg19: chr2-47630531;