Is DRC7 p.Arg771Cys (c.2311C>T) pathogenic?

DRC7 p.Arg771Cys (c.2311C>T) is classified Uncertain significance in DRC7 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-05-02). AlphaMissense: likely benign (0.078); Very rare (popmax 0.00334%, amr).

How common is DRC7 p.Arg771Cys (c.2311C>T) in the general population?

DRC7 p.Arg771Cys (c.2311C>T) is very rare (popmax 0.00334%, amr) (gnomAD).

What do computational predictors say about DRC7 p.Arg771Cys (c.2311C>T)?

AlphaMissense predicts likely benign (score 0.078) — an in-silico prediction, not a clinical call.

DRC7 p.Arg771Cys

c.2311C>T · VCV3273745

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.078 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00334%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.078	likely benign
REVEL	0.09	moderately benign-leaning
SaProt	LLR -9.20	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4	GERP 0.62, phastCons 0.26
Regional constraint	o/e 0.91	unconstrained · MANE · 33 kb · p 0.0015 · regional, not allelic
Overall
CADD	18.69	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00334% Admixed American · 2/59,916 alleles

Filtering AF 0.000554% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00026%

Overall 0.000744% 12/1,612,062 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00334%	29,958
East Asian	0.00223%	44,848
European (non-Finnish)	0.000763%	131,079

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: DRC7
Protein: p.Arg771Cys
Coding: c.2311C>T
MANE Select: NM_001289162
Type: single nucleotide variant
Location: chr16:57728504 (GRCh38)
Gene constraint: LOEUF 0.883 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 82.69 · 1 PDB

Full DRC7 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DRC7 p.Arg771His Uncertain significance ★ ⚠ same residue
DRC7 p.Ala510Pro Uncertain significance ★ ⚠ same type
DRC7 p.Ala605Val Uncertain significance ★ ⚠ same type
DRC7 p.Ala629Thr Uncertain significance ★ ⚠ same type
DRC7 p.Ala65Val Uncertain significance ★ ⚠ same type
DRC7 p.Ala709Val Uncertain significance ★ ⚠ same type
DRC7 p.Ala769Val Uncertain significance ★ ⚠ same type
DRC7 p.Arg103His Uncertain significance ★ ⚠ same type

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/drc7-p-arg771cys (accessed [today's date]).

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