rs79201718

Variant names:

• chr9-129813011-A-T
• rs79201718
• NM_000113.3:c.*961T>A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_000113.3(TOR1A):​c.*961T>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0408 in 152,298 control chromosomes in the GnomAD database, including 433 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.041 (433 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: TOR1A NM_000113.3 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.942

Genes affected

TOR1A (HGNC:3098): (torsin family 1 member A) The protein encoded by this gene is a member of the AAA family of adenosine triphosphatases (ATPases), is related to the Clp protease/heat shock family and is expressed prominently in the substantia nigra pars compacta. Mutations in this gene result in the autosomal dominant disorder, torsion dystonia 1. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.66).
• BP6: Variant 9-129813011-A-T is Benign according to our data. Variant chr9-129813011-A-T is described in ClinVar as [Benign]. Clinvar id is 365212.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.138 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TOR1A	NM_000113.3	c.*961T>A		3_prime_UTR_variant	Exon 5 of 5	ENST00000351698.5	NP_000104.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TOR1A	ENST00000351698	c.*961T>A		3_prime_UTR_variant	Exon 5 of 5	1	NM_000113.3	ENSP00000345719.4
TOR1A	ENST00000651202	c.*1228T>A		3_prime_UTR_variant	Exon 6 of 6			ENSP00000498222.1

Frequencies

GnomAD3 genomes AF: 0.0408 AC: 6212 AN: 152180 Hom.: 434 Cov.: 33

Gnomad AFR AF: 0.141

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0153

Gnomad ASJ AF: 0.00144

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000621

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000544

Gnomad OTH AF: 0.0335

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 2 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 2

Gnomad4 NFE exome AF: 0.00

GnomAD4 genome AF: 0.0408 AC: 6218 AN: 152298 Hom.: 433 Cov.: 33 AF XY: 0.0387 AC XY: 2882 AN XY: 74476

Gnomad4 AFR AF: 0.141

Gnomad4 AMR AF: 0.0153

Gnomad4 ASJ AF: 0.00144

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.000544

Gnomad4 OTH AF: 0.0331

Alfa AF: 0.0331 Hom.: 27

Bravo AF: 0.0459

Asia WGS AF: 0.00693 AC: 24 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Early-onset generalized limb-onset dystonia Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.66
CADD	Benign	7.7
DANN	Benign	0.90

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: rs79201718; hg19: chr9-132575290;