rs26779

chr5-80763384-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_002439.5(MSH3):c.1896+1706C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.346 in 151,954 control chromosomes in the GnomAD database, including 9,533 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.35 (9533 hom., cov: 32)
• Consequence: MSH3 NM_002439.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.209

Genes affected

MSH3 (HGNC:7326): (mutS homolog 3) The protein encoded by this gene forms a heterodimer with MSH2 to form MutS beta, part of the post-replicative DNA mismatch repair system. MutS beta initiates mismatch repair by binding to a mismatch and then forming a complex with MutL alpha heterodimer. This gene contains a polymorphic 9 bp tandem repeat sequence in the first exon. The repeat is present 6 times in the reference genome sequence and 3-7 repeats have been reported. Defects in this gene are a cause of susceptibility to endometrial cancer. [provided by RefSeq, Mar 2011]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.448 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MSH3	NM_002439.5	c.1896+1706C>T		intron_variant		ENST00000265081.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MSH3	ENST00000265081.7	c.1896+1706C>T		intron_variant		1	NM_002439.5	P2
MSH3	ENST00000658259.1	c.1728+1706C>T		intron_variant				A2
MSH3	ENST00000667069.1	c.1701+1706C>T		intron_variant
MSH3	ENST00000670357.1	c.1896+1706C>T		intron_variant, NMD_transcript_variant

Frequencies

GnomAD3 genomes AF: 0.346 AC: 52484 AN: 151836 Hom.: 9531 Cov.: 32

Gnomad AFR AF: 0.216

Gnomad AMI AF: 0.452

Gnomad AMR AF: 0.345

Gnomad ASJ AF: 0.334

Gnomad EAS AF: 0.392

Gnomad SAS AF: 0.464

Gnomad FIN AF: 0.448

Gnomad MID AF: 0.307

Gnomad NFE AF: 0.397

Gnomad OTH AF: 0.336

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.346 AC: 52510 AN: 151954 Hom.: 9533 Cov.: 32 AF XY: 0.351 AC XY: 26042 AN XY: 74244

Gnomad4 AFR AF: 0.215

Gnomad4 AMR AF: 0.345

Gnomad4 ASJ AF: 0.334

Gnomad4 EAS AF: 0.391

Gnomad4 SAS AF: 0.464

Gnomad4 FIN AF: 0.448

Gnomad4 NFE AF: 0.397

Gnomad4 OTH AF: 0.336

Alfa AF: 0.367 Hom.: 1748

Bravo AF: 0.326

Asia WGS AF: 0.425 AC: 1479 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
Cadd	Benign	6.4
Dann	Benign	0.34

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

Publications

LitVar

Other links and lift over

dbSNP: rs26779; hg19: chr5-80059203;