11-2164224-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000360.4(TH):c.*9C>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 0.000106 in 1,447,758 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00011 (0 hom.)
• Consequence: TH NM_000360.4 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: -1.06

Genes affected

TH (HGNC:11782): (tyrosine hydroxylase) The protein encoded by this gene is involved in the conversion of tyrosine to dopamine. It is the rate-limiting enzyme in the synthesis of catecholamines, hence plays a key role in the physiology of adrenergic neurons. Mutations in this gene have been associated with autosomal recessive Segawa syndrome. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TH	NM_000360.4	c.*9C>T		3_prime_UTR_variant	13/13	ENST00000352909.8
TH	NM_199292.3	c.*9C>T		3_prime_UTR_variant	14/14
TH	NM_199293.3	c.*9C>T		3_prime_UTR_variant	14/14
TH	XM_011520335.3	c.*9C>T		3_prime_UTR_variant	13/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TH	ENST00000352909.8	c.*9C>T		3_prime_UTR_variant	13/13	1	NM_000360.4	P1
TH	ENST00000333684.9	c.*9C>T		3_prime_UTR_variant	11/11	1
TH	ENST00000381175.5	c.*9C>T		3_prime_UTR_variant	14/14	1
TH	ENST00000381178.5	c.*9C>T		3_prime_UTR_variant	14/14	1

Frequencies

GnomAD3 genomes AF: 0.0000657 AC: 10 AN: 152168 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

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: 0.000282

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000882

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000127 AC: 17 AN: 134080 Hom.: 0 AF XY: 0.000207 AC XY: 15 AN XY: 72632

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000202

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000211

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000110 AC: 143 AN: 1295590 Hom.: 0 Cov.: 30 AF XY: 0.000117 AC XY: 74 AN XY: 631744

Gnomad4 AFR exome AF: 0.0000372

Gnomad4 AMR exome AF: 0.0000831

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000299

Gnomad4 SAS exome AF: 0.0000165

Gnomad4 FIN exome AF: 0.000237

Gnomad4 NFE exome AF: 0.000121

Gnomad4 OTH exome AF: 0.0000569

GnomAD4 genome AF: 0.0000657 AC: 10 AN: 152168 Hom.: 0 Cov.: 33 AF XY: 0.000108 AC XY: 8 AN XY: 74332

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000282

Gnomad4 NFE AF: 0.0000882

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000873 Hom.: 0

Bravo AF: 0.0000416

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

Autosomal recessive DOPA responsive dystonia Uncertain:2

Uncertain significance, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Apr 11, 2020	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
Cadd	Benign	0.40
Dann	Benign	0.75

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: rs762091461; hg19: chr11-2185454;