NM_000179.3:c.4005A>C

Variant names:

• chr2-47806782-A-C
• rs786204130
• NM_000179.3:c.4005A>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM1 BP4_Moderate

The NM_000179.3(MSH6):​c.4005A>C​(p.Glu1335Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000188 in 1,592,790 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E1335A) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000019 (0 hom.)
• Consequence: MSH6 NM_000179.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:11 B:1
• Conservation: PhyloP100: 1.62
• Publications: 3 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: Uncertain_significance. The variant received 0 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 9 benign, 43 uncertain in NM_000179.3
• BP4: Computational evidence support a benign effect (MetaRNN=0.14567557).

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.4005A>C	p.Glu1335Asp	missense	Exon 10 of 10	NP_000170.1	P52701-1
	MSH6	NM_001406795.1		c.4101A>C	p.Glu1367Asp	missense	Exon 11 of 11	NP_001393724.1
	MSH6	NM_001406813.1		c.4011A>C	p.Glu1337Asp	missense	Exon 10 of 10	NP_001393742.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSH6	ENST00000234420.11	TSL:1 MANE Select	c.4005A>C	p.Glu1335Asp	missense	Exon 10 of 10	ENSP00000234420.5	P52701-1
	MSH6	ENST00000445503.5	TSL:1	n.*3352A>C		non_coding_transcript_exon	Exon 9 of 9	ENSP00000405294.1	F8WAX8
	MSH6	ENST00000445503.5	TSL:1	n.*3352A>C		3_prime_UTR	Exon 9 of 9	ENSP00000405294.1	F8WAX8

Frequencies

GnomAD3 genomes AF: 0.0000201 AC: 3 AN: 149438 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000494

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000149

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000412 AC: 1 AN: 242940 AF XY: 0.00

Gnomad AFR exome AF: 0.0000621

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000187 AC: 27 AN: 1443352 Hom.: 0 Cov.: 32 AF XY: 0.0000181 AC XY: 13 AN XY: 718012

African (AFR) AF: 0.0000307 AC: 1 AN: 32586

American (AMR) AF: 0.00 AC: 0 AN: 42860

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25838

East Asian (EAS) AF: 0.00 AC: 0 AN: 39590

South Asian (SAS) AF: 0.00 AC: 0 AN: 83210

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52074

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5696

European-Non Finnish (NFE) AF: 0.0000236 AC: 26 AN: 1101806

Other (OTH) AF: 0.00 AC: 0 AN: 59692

GnomAD4 genome AF: 0.0000201 AC: 3 AN: 149438 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 72890

African (AFR) AF: 0.0000494 AC: 2 AN: 40520

American (AMR) AF: 0.00 AC: 0 AN: 15068

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3452

East Asian (EAS) AF: 0.00 AC: 0 AN: 5166

South Asian (SAS) AF: 0.00 AC: 0 AN: 4784

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9908

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000149 AC: 1 AN: 67254

Other (OTH) AF: 0.00 AC: 0 AN: 2064

Alfa AF: 0.0000267 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	3	-	Hereditary cancer-predisposing syndrome (3)
-	3	-	Lynch syndrome 5 (3)
-	2	-	not provided (2)
-	1	-	Endometrial carcinoma (1)
-	-	1	Hereditary nonpolyposis colorectal neoplasms (1)
-	1	-	Lynch syndrome (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.020
CADD	Benign	19
DANN	Benign	0.86
DEOGEN2	Benign	0.084	T
Eigen	Benign	-0.31
Eigen_PC	Benign	-0.11
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.078	D
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-0.66	T
MutationAssessor	Benign	1.6	L
PhyloP100		1.6
PrimateAI	Uncertain	0.48	T
PROVEAN	Benign	-0.67	N
REVEL	Uncertain	0.39
Sift	Benign	0.46	T
Sift4G	Benign	0.55	T
Polyphen		0.0040	B
Vest4		0.43
MutPred		0.35		Gain of helix (P = 0.062)
MVP		0.81
ClinPred		0.15	T
GERP RS		3.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.076
gMVP		0.44
Mutation Taster		=87/13	polymorphism

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: rs786204130; hg19: chr2-48033921; COSMIC: COSV52282770; COSMIC: COSV52282770;