NM_000360.4:c.614T>C
Variant summary
Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong
The NM_000360.4(TH):c.614T>C(p.Leu205Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000435 in 1,610,598 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. L205L) has been classified as Likely benign.
Frequency
Consequence
NM_000360.4 missense
Scores
Clinical Significance
Conservation
Publications
- TH-deficient dopa-responsive dystoniaInheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
- tyrosine hydroxylase deficiencyInheritance: AR Classification: DEFINITIVE Submitted by: ClinGen, Myriad Women’s Health
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ACMG classification
Our verdict: Pathogenic. The variant received 16 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152172Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0000123 AC: 3AN: 244378 AF XY: 0.0000151 show subpopulations
GnomAD4 exome AF: 0.00000343 AC: 5AN: 1458426Hom.: 0 Cov.: 33 AF XY: 0.00000552 AC XY: 4AN XY: 725272 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152172Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74340 show subpopulations
ClinVar
Submissions by phenotype
Autosomal recessive DOPA responsive dystonia Pathogenic:9Other:1
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This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 236 of the TH protein (p.Leu236Pro). This variant is present in population databases (rs121917763, gnomAD 0.003%). This missense change has been observed in individual(s) with tyrosine hydroxylase deficiency (PMID: 2019643, 8817341, 12891655, 19282209, 20430833, 23480488, 24753243; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is also known as c.614T>C (p.Leu205Pro). ClinVar contains an entry for this variant (Variation ID: 12325). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on TH protein function. Experimental studies have shown that this missense change affects TH function (PMID: 8817341). For these reasons, this variant has been classified as Pathogenic. -
Founder variant in Greek population -
This variant was classified as: Pathogenic. The following ACMG criteria were applied in classifying this variant: PS1,PS3,PM2,PP3. This variant was detected in homozygous state. -
The following ACMG criteria were applied in classifying this variant: PS1,PS3,PM2,PP3. This variant was detected in compound heterozygous state with c.605G>A (p.Arg202His). -
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This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
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not provided Pathogenic:2
Published functional studies demonstrate a damaging effect, such that the mutant enzyme shows reduced activity compared to wild-type (PMID: 24753243, 8817341); Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 8817341, 23480488, 34426522, 38084654, 24753243) -
TH: PM2, PM3, PS3:Moderate -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at