rs11195194

chr10-110577935-T-Achr10-110577935-T-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_005445.4(SMC3):c.350+21T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.115 in 1,512,558 control chromosomes in the GnomAD database, including 12,184 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.12 (1246 hom., cov: 32)
  • Exomes 𝑓: 0.11 (10938 hom.)
• Consequence: SMC3 NM_005445.4 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.524

Genes affected

SMC3 (HGNC:2468): (structural maintenance of chromosomes 3) This gene belongs to the SMC3 subfamily of SMC proteins. The encoded protein occurs in certain cell types as either an intracellular, nuclear protein or a secreted protein. The nuclear form, known as structural maintenance of chromosomes 3, is a component of the multimeric cohesin complex that holds together sister chromatids during mitosis, enabling proper chromosome segregation. Post-translational modification of the encoded protein by the addition of chondroitin sulfate chains gives rise to the secreted proteoglycan bamacan, an abundant basement membrane protein. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BP6: Variant 10-110577935-T-A is Benign according to our data. Variant chr10-110577935-T-A is described in ClinVar as [Benign]. Clinvar id is 259770.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.246 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SMC3	NM_005445.4	c.350+21T>A		intron_variant		ENST00000361804.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SMC3	ENST00000361804.5	c.350+21T>A		intron_variant		1	NM_005445.4	P1

Frequencies

GnomAD3 genomes AF: 0.118 AC: 17886 AN: 151888 Hom.: 1242 Cov.: 32

Gnomad AFR AF: 0.0808

Gnomad AMI AF: 0.0537

Gnomad AMR AF: 0.173

Gnomad ASJ AF: 0.113

Gnomad EAS AF: 0.257

Gnomad SAS AF: 0.178

Gnomad FIN AF: 0.163

Gnomad MID AF: 0.152

Gnomad NFE AF: 0.107

Gnomad OTH AF: 0.130

GnomAD3 exomes AF: 0.152 AC: 37968 AN: 249312 Hom.: 3380 AF XY: 0.150 AC XY: 20207 AN XY: 134934

Gnomad AFR exome AF: 0.0809

Gnomad AMR exome AF: 0.262

Gnomad ASJ exome AF: 0.122

Gnomad EAS exome AF: 0.241

Gnomad SAS exome AF: 0.181

Gnomad FIN exome AF: 0.159

Gnomad NFE exome AF: 0.109

Gnomad OTH exome AF: 0.134

GnomAD4 exome AF: 0.114 AC: 155500 AN: 1360552 Hom.: 10938 Cov.: 23 AF XY: 0.116 AC XY: 79543 AN XY: 682800

Gnomad4 AFR exome AF: 0.0771

Gnomad4 AMR exome AF: 0.249

Gnomad4 ASJ exome AF: 0.118

Gnomad4 EAS exome AF: 0.295

Gnomad4 SAS exome AF: 0.178

Gnomad4 FIN exome AF: 0.154

Gnomad4 NFE exome AF: 0.0947

Gnomad4 OTH exome AF: 0.120

GnomAD4 genome AF: 0.118 AC: 17911 AN: 152006 Hom.: 1246 Cov.: 32 AF XY: 0.124 AC XY: 9202 AN XY: 74302

Gnomad4 AFR AF: 0.0809

Gnomad4 AMR AF: 0.174

Gnomad4 ASJ AF: 0.113

Gnomad4 EAS AF: 0.257

Gnomad4 SAS AF: 0.178

Gnomad4 FIN AF: 0.163

Gnomad4 NFE AF: 0.107

Gnomad4 OTH AF: 0.131

Alfa AF: 0.0700 Hom.: 113

Bravo AF: 0.119

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

-

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jul 07, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
Cadd	Benign	0.92
Dann	Benign	0.71

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: rs11195194; hg19: chr10-112337693; COSMIC: COSV62418744;