Is DBH p.Cys269= (c.807C>T) pathogenic?

DBH p.Cys269= (c.807C>T) is classified Conflicting classifications of pathogenicity in DBH (ClinVar, Conflicting submitters, 5 submitters; last evaluated 2025-11-23). Rare (popmax 0.103%, nfe); Associated with orthostatic hypotension 1.

What condition is associated with DBH p.Cys269= (c.807C>T)?

DBH p.Cys269= (c.807C>T) is associated with orthostatic hypotension 1 (ClinVar).

How common is DBH p.Cys269= (c.807C>T) in the general population?

DBH p.Cys269= (c.807C>T) is rare (popmax 0.103%, nfe) (gnomAD).

How is Dopamine beta-hydroxylase deficiency inherited?

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

DBH p.Cys269=

c.807C>T · rs141816448 · VCV365647

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 5 submitters

gnomAD v4.1

Rare

rare (popmax 0.103%, nfe)

Conditions

orthostatic hypotension 1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -11	GERP -2.7
Overall
CADD	5.096	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.103% European (non-Finnish) · 1,220/1,179,794 alleles

Filtering AF 0.0985% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0966%

Overall 0.0843% 1,360/1,613,360 alleles · rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.103%	967
Remaining individualsnot grpmax-eligible	0.0608%	1,645
Admixed American	0.0534%	1,874
South Asian	0.0516%	1,937
African / African-American	0.02%	4,989
Middle Eastern	0.0165%	6,062
Ashkenazi Jewishnot grpmax-eligible	0.0101%	9,865
East Asian	0.00893%	11,203

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: DBH
Protein: p.Cys269=
Coding: c.807C>T
MANE Select: NM_000787
dbSNP: rs141816448
Type: single nucleotide variant
Location: chr9:133643475 (GRCh38)
Gene constraint: LOEUF 0.936 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 90.58 · 1 PDB
Residue 269: a disulfide bond

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

Disease context

orthostatic hypotension 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Dopamine beta-hydroxylase deficiency (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Adult, Childhood, Infancy, Neonatal

Similar variants

DBH c.339+2T>C Pathogenic ★★ same condition
DBH c.1024+6C>T Uncertain significance ★★ same condition
DBH c.486+15C>T Uncertain significance ★★ same condition
DBH c.*393C>T Uncertain significance ★★ same condition
DBH p.Ala113Ser Uncertain significance ★★ ⚠ same condition
DBH p.Ala259Val Uncertain significance ★★ ⚠ same condition
DBH p.Ala383Val Uncertain significance ★★ ⚠ same condition
DBH p.Ala506Thr Uncertain significance ★★ ⚠ 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/dbh-p-cys269 (accessed [today's date]).

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