Is DRD2 p.Leu44= (c.132C>T) pathogenic?

DRD2 p.Leu44= (c.132C>T) is classified Benign in DRD2 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-01-15). Common (popmax 6.44%, afr) — too common for a highly-penetrant pathogenic allele; Associated with dystonic disorder.

What condition is associated with DRD2 p.Leu44= (c.132C>T)?

DRD2 p.Leu44= (c.132C>T) is associated with dystonic disorder (ClinVar).

DRD2 p.Leu44=

Q: How common is DRD2 p.Leu44= (c.132C>T) in the general population?

DRD2 p.Leu44= (c.132C>T) is common (popmax 6.44%, afr) — too common for a highly-penetrant pathogenic allele (gnomAD).

c.132C>T · rs4986918 · VCV416374

Benign Multiple submitters

Classification

Benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Common

common (popmax 6.44%, afr) — too common for a highly-penetrant pathogenic allele

Conditions

dystonic disorder

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 5.8	GERP 1.8, phastCons 1
Overall
CADD	7.846	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 6.44% African / African-American · 4,832/75,058 alleles

Filtering AF 6.29% ClinGen BA1/BS1 input FAF95, joint · FAF99 6.22%

Overall 0.343% 5,542/1,614,256 alleles · common

Ancestry group	Frequency	1 in
African / African-Americangrpmax	6.44%	16
Remaining individualsnot grpmax-eligible	0.382%	262
Admixed American	0.381%	262
Middle Eastern	0.33%	303
South Asian	0.0176%	5,693
European (non-Finnish)	0.0175%	5,728

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: DRD2
Protein: p.Leu44=
Coding: c.132C>T
MANE Select: NM_000795
dbSNP: rs4986918
Type: single nucleotide variant
Location: chr11:113424520 (GRCh38)
Gene constraint: LOEUF 0.372 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 72.49 · 11 PDB
Residue 44: an α-helix

Full DRD2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

dystonic disorder — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

DRD2 p.Arg274Gln Uncertain significance ★★ ⚠ same condition
DRD2 p.Gln366Lys Uncertain significance ★★ ⚠ same condition
DRD2 p.Glu99Lys Uncertain significance ★★ ⚠ same condition
DRD2 p.Gly261Arg Uncertain significance ★★ ⚠ same condition
DRD2 p.His316Pro Uncertain significance ★★ ⚠ same condition
DRD2 p.Ile431Thr Uncertain significance ★★ ⚠ same condition
DRD2 p.Pro300His Uncertain significance ★★ ⚠ same condition
DRD2 c.1139-653A>C Benign ★★ 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/drd2-p-leu44 (accessed [today's date]).

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