2-47806751-CTTTTTTTTTTTTTTT-CTTTTTTTTTTTTTTTTTT

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_Strong BA1

The NM_000179.3(MSH6):c.4002-12_4002-10dup variant causes a intron change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Benign (★★★).

• Frequency:
  • Genomes: 𝑓 0.018 (68 hom., cov: 0)
  • Exomes 𝑓: 0.0012 (0 hom.)
• Consequence: MSH6 NM_000179.3 intron
• Clinical Significance: Benign reviewed by expert panel B:5
• Conservation: PhyloP100: -1.08

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 -16 ACMG points.

• BP6: Variant 2-47806751-C-CTTT is Benign according to our data. Variant chr2-47806751-C-CTTT is described in ClinVar as [Benign]. Clinvar id is 89511.Status of the report is reviewed_by_expert_panel, 3 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0584 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MSH6	NM_000179.3	c.4002-12_4002-10dup		intron_variant		ENST00000234420.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MSH6	ENST00000234420.11	c.4002-12_4002-10dup		intron_variant		1	NM_000179.3	P4

Frequencies

GnomAD3 genomes AF: 0.0178 AC: 2458 AN: 138350 Hom.: 68 Cov.: 0

Gnomad AFR AF: 0.0605

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00693

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00338

Gnomad NFE AF: 0.000721

Gnomad OTH AF: 0.0117

GnomAD4 exome AF: 0.00121 AC: 1578 AN: 1304908 Hom.: 0 Cov.: 0 AF XY: 0.00112 AC XY: 730 AN XY: 651616

Gnomad4 AFR exome AF: 0.0335

Gnomad4 AMR exome AF: 0.00137

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000658

Gnomad4 FIN exome AF: 0.0000467

Gnomad4 NFE exome AF: 0.000482

Gnomad4 OTH exome AF: 0.00198

GnomAD4 genome AF: 0.0178 AC: 2462 AN: 138404 Hom.: 68 Cov.: 0 AF XY: 0.0175 AC XY: 1169 AN XY: 66832

Gnomad4 AFR AF: 0.0604

Gnomad4 AMR AF: 0.00692

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000721

Gnomad4 OTH AF: 0.0116

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: reviewed by expert panel

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	May 16, 2023	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 13, 2019	- -

Lynch syndrome 5 Benign:1

Benign, criteria provided, single submitter

clinical testing

Mendelics

May 28, 2019

- -

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Aug 15, 2023

- -

Lynch syndrome Benign:1

Benign, reviewed by expert panel

research

International Society for Gastrointestinal Hereditary Tumours (InSiGHT)

Sep 05, 2013

MAF >1% -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs59056100; hg19: chr2-48033890;