Is TH p.Pro192= (c.576G>A) pathogenic?

TH p.Pro192= (c.576G>A) is classified Uncertain significance in TH (ClinVar, Single submitter, 2 submitters; last evaluated 2022-07-07). Very rare (popmax 0.00667%, amr); Associated with TH-deficient dopa-responsive dystonia.

What condition is associated with TH p.Pro192= (c.576G>A)?

TH p.Pro192= (c.576G>A) is associated with TH-deficient dopa-responsive dystonia (ClinVar).

How common is TH p.Pro192= (c.576G>A) in the general population?

TH p.Pro192= (c.576G>A) is very rare (popmax 0.00667%, amr) (gnomAD).

How is Autosomal recessive dopa-responsive dystonia inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

TH p.Pro192=

c.576G>A · rs201809787 · VCV574415

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00667%, amr)

Conditions

TH-deficient dopa-responsive dystonia

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal.
REVEL	0.066	moderately benign-leaning
Splicing
SpliceAI	Δ0.36	donor gain · deltas
Constraint at this position
Conservation	phyloP 0.23	GERP -2.8, phastCons 0.98
Overall
CADD	27.3	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00667% Admixed American · 4/59,996 alleles

Filtering AF 0.00342% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0031%

Overall 0.00397% 64/1,612,940 alleles · very rare exomes 56/1,460,790 · genomes 8/152,150 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00667%	14,999
Remaining individualsnot grpmax-eligible	0.0048%	20,819
European (non-Finnish)	0.00441%	22,686
Ashkenazi Jewishnot grpmax-eligible	0.00338%	29,606
East Asian	0.00223%	44,882
South Asian	0.0022%	45,542
Finnishnot grpmax-eligible	0.00158%	63,352

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: TH
Protein: p.Pro192=
Coding: c.576G>A
MANE Select: NM_000360
dbSNP: rs201809787
Type: single nucleotide variant
Location: chr11:2168091 (GRCh38)
Gene constraint: LOEUF 1.27 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 81.75 · 7 PDB

Full TH gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

TH-deficient dopa-responsive dystonia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Autosomal recessive dopa-responsive dystonia (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal

Similar variants

TH p.Pro192Leu Uncertain significance ★ ⚠ same residue
TH p.Pro192Ser Uncertain significance ★ ⚠ same residue
TH c.1200+2T>C Likely pathogenic ★★ same condition
TH c.1334+1G>A Likely pathogenic ★★ same condition
TH c.312+1G>A Likely pathogenic ★★ same condition
TH c.488-1G>A Pathogenic ★★ same condition
TH c.644+1G>A Likely pathogenic ★★ same condition
TH c.695+1G>C Likely pathogenic ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/th-p-pro192 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown