Is DRC2 p.His52Pro (c.155A>C) pathogenic?

DRC2 p.His52Pro (c.155A>C) is classified Uncertain significance in DRC2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-08-06). AlphaMissense: ambiguous (0.4688); Absent from gnomAD v4.1; Associated with primary ciliary dyskinesia 27.

What condition is associated with DRC2 p.His52Pro (c.155A>C)?

DRC2 p.His52Pro (c.155A>C) is associated with primary ciliary dyskinesia 27 (ClinVar).

How common is DRC2 p.His52Pro (c.155A>C) in the general population?

DRC2 p.His52Pro (c.155A>C) is absent from gnomAD v4.1 (gnomAD).

How is Primary ciliary dyskinesia inherited?

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

What do computational predictors say about DRC2 p.His52Pro (c.155A>C)?

AlphaMissense predicts ambiguous (score 0.4688) — an in-silico prediction, not a clinical call.

DRC2 p.His52Pro

c.155A>C · rs145274212 · VCV2065694

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4688 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

primary ciliary dyskinesia 27

Computational evidence

Protein change
AlphaMissense	0.4688	ambiguous
REVEL	0.058	moderately benign-leaning
SaProt	LLR -11.90	damaging
⇒ SaProt calls this damaging; REVEL does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.3	GERP 0.26, phastCons 0.98
Regional constraint	o/e 0.94	unconstrained · MANE · 17 kb · p 0.19 · regional, not allelic
Overall
CADD	21.5	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: DRC2
Protein: p.His52Pro
Coding: c.155A>C
MANE Select: NM_033124
dbSNP: rs145274212
Type: single nucleotide variant
Location: chr12:48904968 (GRCh38)
Structure: AlphaFold pLDDT 83.21 · 1 PDB

Full DRC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

primary ciliary dyskinesia 27 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Primary ciliary dyskinesia (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, X-linked recessive
Onset: Neonatal
Prevalence: 1-5 / 10 000 (Pakistan)

Similar variants

DRC2 p.His52Gln Uncertain significance ★ ⚠ same residue
CCDC65 p.Arg70Gln Uncertain significance ★★ ⚠ same condition
CCDC65 p.Glu110Lys Uncertain significance ★★ ⚠ same condition
CCDC65 p.Lys158Asn Uncertain significance ★★ ⚠ same condition
DRC2 p.Ala109Val Uncertain significance ★★ ⚠ same condition
DRC2 p.Ala114Pro Uncertain significance ★★ ⚠ same condition
DRC2 p.Arg118Cys Uncertain significance ★★ ⚠ same condition
DRC2 p.Arg294His 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/drc2-p-his52pro (accessed [today's date]).

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