rs377729019
Variant summary
Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM1BP4
The NM_000360.4(TH):c.653C>T(p.Pro218Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000269 in 1,561,416 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P218S) has been classified as Uncertain significance.
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: Uncertain_significance. The variant received 1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000460 AC: 7AN: 152176Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0000414 AC: 7AN: 168990 AF XY: 0.0000334 show subpopulations
GnomAD4 exome AF: 0.0000248 AC: 35AN: 1409122Hom.: 0 Cov.: 33 AF XY: 0.0000287 AC XY: 20AN XY: 695938 show subpopulations
GnomAD4 genome AF: 0.0000460 AC: 7AN: 152294Hom.: 0 Cov.: 33 AF XY: 0.0000537 AC XY: 4AN XY: 74466 show subpopulations
ClinVar
Submissions by phenotype
Autosomal recessive DOPA responsive dystonia Uncertain:3
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This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 249 of the TH protein (p.Pro249Leu). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individual(s) with generalized dystonia (PMID: 29801903). ClinVar contains an entry for this variant (Variation ID: 374731). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C15". The leucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
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not specified Uncertain:1
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not provided Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at