2-47806770-A-T

Position:

• chr2-47806770-A-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BP6_Very_Strong

The NM_000179.3(MSH6):​c.4002-9A>T variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00082 (0 hom., cov: 30)
  • Exomes 𝑓: 0.00080 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MSH6 NM_000179.3 splice_polypyrimidine_tract, intron
• Scores: Splicing: ADA: 0.00001722
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.655

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]

FBXO11 (HGNC:13590): (F-box protein 11) This gene encodes a member of the F-box protein family which is characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of ubiquitin protein ligase complex called SCFs (SKP1-cullin-F-box), which function in phosphorylation-dependent ubiquitination. The F-box proteins are divided into 3 classes: Fbws containing WD-40 domains, Fbls containing leucine-rich repeats, and Fbxs containing either different protein-protein interaction modules or no recognizable motifs. The protein encoded by this gene belongs to the Fbxs class. It can function as an arginine methyltransferase that symmetrically dimethylates arginine residues, and it acts as an adaptor protein to mediate the neddylation of p53, which leads to the suppression of p53 function. This gene is known to be down-regulated in melanocytes from patients with vitiligo, a skin disorder that results in depigmentation. Polymorphisms in this gene are associated with chronic otitis media with effusion and recurrent otitis media (COME/ROM), a hearing loss disorder, and the knockout of the homologous mouse gene results in the deaf mouse mutant Jeff (Jf), a single gene model of otitis media. Alternatively spliced transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jun 2010]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 2-47806770-A-T is Benign according to our data. Variant chr2-47806770-A-T is described in ClinVar as [Likely_benign]. Clinvar id is 378173.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MSH6	NM_000179.3	c.4002-9A>T		splice_polypyrimidine_tract_variant, intron_variant		ENST00000234420.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MSH6	ENST00000234420.11	c.4002-9A>T		splice_polypyrimidine_tract_variant, intron_variant		1	NM_000179.3	P4

Frequencies

GnomAD3 genomes AF: 0.00 AC: 108 AN: 131012 Hom.: 0 Cov.: 30 FAILED QC

Gnomad AFR AF: 0.000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000232

Gnomad FIN AF: 0.00526

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000903

Gnomad OTH AF: 0.000555

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.000800 AC: 1073 AN: 1341324 Hom.: 0 Cov.: 31 AF XY: 0.000856 AC XY: 573 AN XY: 669248

Gnomad4 AFR exome AF: 0.00171

Gnomad4 AMR exome AF: 0.00835

Gnomad4 ASJ exome AF: 0.00122

Gnomad4 EAS exome AF: 0.0000789

Gnomad4 SAS exome AF: 0.00337

Gnomad4 FIN exome AF: 0.000476

Gnomad4 NFE exome AF: 0.000350

Gnomad4 OTH exome AF: 0.000822

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.000824 AC: 108 AN: 131012 Hom.: 0 Cov.: 30 AF XY: 0.000833 AC XY: 53 AN XY: 63606

Gnomad4 AFR AF: 0.000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000232

Gnomad4 FIN AF: 0.00526

Gnomad4 NFE AF: 0.000903

Gnomad4 OTH AF: 0.000555

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Aug 24, 2020

- -

Hereditary nonpolyposis colorectal neoplasms Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 12, 2022

- -

Hereditary cancer-predisposing syndrome Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Sep 29, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	3.6
DANN	Benign	0.51

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000017
dbscSNV1_RF	Benign	0.028
SpliceAI score (max)		0.050		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

Other links and lift over

dbSNP: rs755141440; hg19: chr2-48033909; COSMIC: COSV52287586; COSMIC: COSV52287586;