NM_000179.3:c.260+2214C>T

Variant names:

• chr2-47785707-C-T
• rs3136245
• NM_000179.3:c.260+2214C>T

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_000179.3(MSH6):​c.260+2214C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.182 in 152,050 control chromosomes in the GnomAD database, including 3,569 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).

• Frequency: Genomes: 𝑓 0.18 (3569 hom., cov: 33)
• Consequence: MSH6 NM_000179.3 intron
• Clinical Significance: Benign reviewed by expert panel B:1
• Conservation: PhyloP100: -0.412
• Publications: 14 publications found

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

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant 2-47785707-C-T is Benign according to our data. Variant chr2-47785707-C-T is described in ClinVar as Benign. ClinVar VariationId is 89294.Status of the report is reviewed_by_expert_panel, 3 stars.
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.6 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MSH6	NM_000179.3	c.260+2214C>T		intron_variant	Intron 1 of 9	ENST00000234420.11	NP_000170.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MSH6	ENST00000234420.11	c.260+2214C>T		intron_variant	Intron 1 of 9	1	NM_000179.3	ENSP00000234420.5

Frequencies

GnomAD3 genomes AF: 0.182 AC: 27666 AN: 151932 Hom.: 3566 Cov.: 33

Gnomad AFR AF: 0.0515

Gnomad AMI AF: 0.220

Gnomad AMR AF: 0.251

Gnomad ASJ AF: 0.218

Gnomad EAS AF: 0.617

Gnomad SAS AF: 0.428

Gnomad FIN AF: 0.207

Gnomad MID AF: 0.162

Gnomad NFE AF: 0.190

Gnomad OTH AF: 0.178

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.182 AC: 27664 AN: 152050 Hom.: 3569 Cov.: 33 AF XY: 0.190 AC XY: 14106 AN XY: 74318

African (AFR) AF: 0.0514 AC: 2132 AN: 41488

American (AMR) AF: 0.251 AC: 3831 AN: 15264

Ashkenazi Jewish (ASJ) AF: 0.218 AC: 755 AN: 3468

East Asian (EAS) AF: 0.618 AC: 3192 AN: 5168

South Asian (SAS) AF: 0.427 AC: 2058 AN: 4822

European-Finnish (FIN) AF: 0.207 AC: 2187 AN: 10544

Middle Eastern (MID) AF: 0.171 AC: 50 AN: 292

European-Non Finnish (NFE) AF: 0.190 AC: 12883 AN: 67976

Other (OTH) AF: 0.177 AC: 375 AN: 2116

Alfa AF: 0.193 Hom.: 2406

Bravo AF: 0.179

Asia WGS AF: 0.448 AC: 1555 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: reviewed by expert panel

Submissions by phenotype

Lynch syndrome Benign:1

Sep 05, 2013

International Society for Gastrointestinal Hereditary Tumours (InSiGHT)

Significance: Benign

Review Status: reviewed by expert panel

Collection Method: research

MAF >1% -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	2.3
DANN	Benign	0.85
PhyloP100		-0.41
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs3136245; hg19: chr2-48012846;