Is DCX p.Arg78His (c.233G>A) pathogenic?

DCX p.Arg78His (c.233G>A) is classified Pathogenic in DCX (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-04-07). AlphaMissense: likely pathogenic (0.9671); Absent from gnomAD v4.1.

How common is DCX p.Arg78His (c.233G>A) in the general population?

DCX p.Arg78His (c.233G>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about DCX p.Arg78His (c.233G>A)?

AlphaMissense predicts likely pathogenic (score 0.9671) — an in-silico prediction, not a clinical call.

DCX p.Arg78His

c.233G>A · rs104894784 · VCV11607

Pathogenic Multiple submitters

Classification

Pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely pathogenic

0.9671 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9671	likely pathogenic ✓ concordant with ClinVar
REVEL	0.956	strongly pathogenic-leaning
SaProt	LLR -11.34	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	GERP 2.1, phastCons 1
Regional constraint	o/e 0.31	constrained · MANE · 77 kb · p 4.4e-24 · regional, not allelic
Overall
CADD	31.0	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: DCX
Protein: p.Arg78His
Coding: c.233G>A
MANE Select: NM_001195553
dbSNP: rs104894784
Type: single nucleotide variant
Location: chrX:111410166 (GRCh38)
Structure: AlphaFold pLDDT 67.19 · 14 PDB
Residue 78: the doublecortin 1 domain; a UniProt-annotated variant site (in sbh); a UniProt-annotated variant site (in sbhx); a β-strand

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

Similar variants

DCX p.Arg78Cys Pathogenic ★★ same residue
DCX p.Arg78Leu Pathogenic ★★ same residue
DCX c.364+1G>A Likely pathogenic ★★ same type
DCX c.705+1G>A Pathogenic ★★ same type
DCX c.706-2A>G Pathogenic ★★ same type
DCX c.809-1G>A Pathogenic/Likely pathogenic ★★ same type
DCX p.Ala204Asp Pathogenic ★★ same type
DCX p.Ala251Ser Pathogenic ★★ 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/dcx-p-arg78his (accessed [today's date]).

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