6-31741261-C-G

Variant names:

• chr6-31741261-C-G
• rs779976920
• NM_172166.4:c.246C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_172166.4(MSH5):​c.246C>G​(p.His82Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000132 in 151,578 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 31)
• Consequence: MSH5 NM_172166.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -3.04
• Publications: 0 publications found

Genes affected

MSH5 (HGNC:7328): (mutS homolog 5) This gene encodes a member of the mutS family of proteins that are involved in DNA mismatch repair and meiotic recombination. This protein is similar to a Saccharomyces cerevisiae protein that participates in segregation fidelity and crossing-over events during meiosis. This protein plays a role in promoting ionizing radiation-induced apoptosis. This protein forms hetero-oligomers with another member of this family, mutS homolog 4. Polymorphisms in this gene have been linked to various human diseases, including IgA deficiency, common variable immunodeficiency, and premature ovarian failure. Alternative splicing results multiple transcript variants. Read-through transcription also exists between this gene and the downstream chromosome 6 open reading frame 26 (C6orf26) gene. [provided by RefSeq, Feb 2011]

MSH5-SAPCD1 (HGNC:41994): (MSH5-SAPCD1 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring mutS homolog 5 (MSH5) and chromosome 6 open reading frame 26 (C6orf26) genes. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.053730816).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_172166.4. 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
	MSH5	NM_172166.4	MANE Select	c.246C>G	p.His82Gln	missense	Exon 3 of 25	NP_751898.1	O43196-1
	MSH5	NM_172165.4		c.246C>G	p.His82Gln	missense	Exon 3 of 25	NP_751897.1	O43196-2
	MSH5	NM_002441.5		c.246C>G	p.His82Gln	missense	Exon 3 of 25	NP_002432.1	A0A024RCM1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSH5	ENST00000375750.9	TSL:1 MANE Select	c.246C>G	p.His82Gln	missense	Exon 3 of 25	ENSP00000364903.3	O43196-1
	MSH5	ENST00000375703.7	TSL:1	c.246C>G	p.His82Gln	missense	Exon 3 of 25	ENSP00000364855.3	O43196-2
	MSH5	ENST00000375755.8	TSL:1	c.246C>G	p.His82Gln	missense	Exon 3 of 25	ENSP00000364908.3	O43196-1

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 151578 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000484

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 151578 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 73994

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000484 AC: 2 AN: 41300

American (AMR) AF: 0.00 AC: 0 AN: 15208

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3460

East Asian (EAS) AF: 0.00 AC: 0 AN: 5138

South Asian (SAS) AF: 0.00 AC: 0 AN: 4782

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10486

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67900

Other (OTH) AF: 0.00 AC: 0 AN: 2080

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.0296732), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.092
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.63
CADD	Benign	0.0080
DANN	Benign	0.75
DEOGEN2	Benign	0.082	T
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.051	N
M_CAP	Benign	0.0033	T
MetaRNN	Benign	0.054	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	L
PhyloP100		-3.0
PROVEAN	Benign	-0.75	N
REVEL	Benign	0.026
Sift	Benign	0.34	T
Sift4G	Benign	0.24	T
Polyphen		0.0010	B
Vest4		0.081
MutPred		0.29		Gain of ubiquitination at K86 (P = 0.0985)
MVP		0.25
MPC		0.45
ClinPred		0.097	T
GERP RS		-9.5
Varity_R		0.040
gMVP		0.21
Mutation Taster		=96/4	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: rs779976920; hg19: chr6-31709038;