chr2-47806768-TTAA-T

Variant names:

• chr2-47806768-TTAA-T
• rs864622105
• NM_000179.3:c.4002-9_4002-7delAAT

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP6

The NM_000179.3(MSH6):​c.4002-9_4002-7delAAT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000399 in 150,302 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.000040 (0 hom., cov: 30)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MSH6 NM_000179.3 splice_region, intron
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: -0.655
• Publications: 1 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]

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]

FBXO11 Gene-Disease associations (from GenCC):

• intellectual developmental disorder with dysmorphic facies and behavioral abnormalities

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• BP6: Variant 2-47806768-TTAA-T is Benign according to our data. Variant chr2-47806768-TTAA-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 219465.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000179.3. 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
	MSH6	NM_000179.3	MANE Select	c.4002-9_4002-7delAAT		splice_region intron	N/A	NP_000170.1	P52701-1
	MSH6	NM_001406795.1		c.4098-9_4098-7delAAT		splice_region intron	N/A	NP_001393724.1
	MSH6	NM_001406813.1		c.4008-9_4008-7delAAT		splice_region intron	N/A	NP_001393742.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSH6	ENST00000234420.11	TSL:1 MANE Select	c.4002-9_4002-7delAAT		splice_region intron	N/A	ENSP00000234420.5	P52701-1
	MSH6	ENST00000445503.5	TSL:1	n.*3349-9_*3349-7delAAT		splice_region intron	N/A	ENSP00000405294.1	F8WAX8
	MSH6	ENST00000936511.1		c.4029-9_4029-7delAAT		splice_region intron	N/A	ENSP00000606570.1

Frequencies

GnomAD3 genomes AF: 0.0000400 AC: 6 AN: 150184 Hom.: 0 Cov.: 30

Gnomad AFR AF: 0.000123

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000661

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000882 AC: 2 AN: 226652 AF XY: 0.00000808

Gnomad AFR exome AF: 0.0000714

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000630

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1428410 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 710886

African (AFR) AF: 0.00 AC: 0 AN: 31052

American (AMR) AF: 0.00 AC: 0 AN: 41896

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25636

East Asian (EAS) AF: 0.00 AC: 0 AN: 38578

South Asian (SAS) AF: 0.00 AC: 0 AN: 82598

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50432

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5634

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1093600

Other (OTH) AF: 0.00 AC: 0 AN: 58984

GnomAD4 genome AF: 0.0000399 AC: 6 AN: 150302 Hom.: 0 Cov.: 30 AF XY: 0.0000544 AC XY: 4 AN XY: 73474

African (AFR) AF: 0.000123 AC: 5 AN: 40626

American (AMR) AF: 0.0000660 AC: 1 AN: 15160

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3454

East Asian (EAS) AF: 0.00 AC: 0 AN: 5154

South Asian (SAS) AF: 0.00 AC: 0 AN: 4790

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10324

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 292

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67508

Other (OTH) AF: 0.00 AC: 0 AN: 2084

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	-	Lynch syndrome (1)
-	-	1	Lynch syndrome 5 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.66

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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: rs864622105; hg19: chr2-48033907;