9-129813558-C-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.*414G>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0921 in 255,204 control chromosomes in the GnomAD database, including 1,089 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.079 (550 hom., cov: 32)
  • Exomes 𝑓: 0.11 (539 hom.)
• Consequence: TOR1A NM_000113.3 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.00400

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=-0.8).
• BP6: Variant 9-129813558-C-A is Benign according to our data. Variant chr9-129813558-C-A is described in ClinVar as [Benign]. Clinvar id is 365225.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.128 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TOR1A	NM_000113.3	c.*414G>T		3_prime_UTR_variant	5/5	ENST00000351698.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TOR1A	ENST00000351698.5	c.*414G>T		3_prime_UTR_variant	5/5	1	NM_000113.3	P1
TOR1A	ENST00000651202.1	c.*681G>T		3_prime_UTR_variant	6/6
TOR1A	ENST00000474192.1			downstream_gene_variant		3

Frequencies

GnomAD3 genomes AF: 0.0793 AC: 11376 AN: 143452 Hom.: 549 Cov.: 32

Gnomad AFR AF: 0.0182

Gnomad AMI AF: 0.107

Gnomad AMR AF: 0.0857

Gnomad ASJ AF: 0.106

Gnomad EAS AF: 0.0665

Gnomad SAS AF: 0.137

Gnomad FIN AF: 0.159

Gnomad MID AF: 0.0690

Gnomad NFE AF: 0.0970

Gnomad OTH AF: 0.0909

GnomAD4 exome AF: 0.109 AC: 12134 AN: 111644 Hom.: 539 Cov.: 0 AF XY: 0.109 AC XY: 6686 AN XY: 61284

Gnomad4 AFR exome AF: 0.0221

Gnomad4 AMR exome AF: 0.0933

Gnomad4 ASJ exome AF: 0.107

Gnomad4 EAS exome AF: 0.0676

Gnomad4 SAS exome AF: 0.126

Gnomad4 FIN exome AF: 0.148

Gnomad4 NFE exome AF: 0.105

Gnomad4 OTH exome AF: 0.115

GnomAD4 genome AF: 0.0793 AC: 11379 AN: 143560 Hom.: 550 Cov.: 32 AF XY: 0.0836 AC XY: 5897 AN XY: 70516

Gnomad4 AFR AF: 0.0182

Gnomad4 AMR AF: 0.0855

Gnomad4 ASJ AF: 0.106

Gnomad4 EAS AF: 0.0668

Gnomad4 SAS AF: 0.136

Gnomad4 FIN AF: 0.159

Gnomad4 NFE AF: 0.0970

Gnomad4 OTH AF: 0.0943

Alfa AF: 0.135 Hom.: 347

Bravo AF: 0.0652

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Early-onset generalized limb-onset dystonia Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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	-0.80
Cadd	Benign	1.7
Dann	Benign	0.70

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: rs199964594; hg19: chr9-132575837;