Is DMAP1 p.Arg81His (c.242G>A) pathogenic?

DMAP1 p.Arg81His (c.242G>A) is classified Uncertain significance in DMAP1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-30). AlphaMissense: likely pathogenic (0.7422); Very rare (popmax 0.008%, afr).

How common is DMAP1 p.Arg81His (c.242G>A) in the general population?

DMAP1 p.Arg81His (c.242G>A) is very rare (popmax 0.008%, afr) (gnomAD).

What do computational predictors say about DMAP1 p.Arg81His (c.242G>A)?

AlphaMissense predicts likely pathogenic (score 0.7422) — an in-silico prediction, not a clinical call.

DMAP1 p.Arg81His

c.242G>A · rs151272574 · VCV2535938

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.7422 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.008%, afr)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.7422	likely pathogenic
REVEL	0.358	indeterminate
SaProt	LLR -9.27	tolerated
⇒ AlphaMissense calls this damaging; SaProt does not; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 9.9	GERP 1.7, phastCons 1
Regional constraint	o/e 0.62	unconstrained · MANE · 4,601 bp · p 1.9e-07 · regional, not allelic
Overall
CADD	32.0	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

Grpmax group 0.008% African / African-American · 6/75,032 alleles

Filtering AF 0.00347% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00228%

Overall 0.0031% 50/1,613,978 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.008%	12,505
East Asian	0.00668%	14,961
European (non-Finnish)	0.00331%	30,254
Remaining individualsnot grpmax-eligible	0.0016%	62,502
South Asian	0.0011%	91,070

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: DMAP1
Protein: p.Arg81His
Coding: c.242G>A
MANE Select: NM_019100
dbSNP: rs151272574
Type: single nucleotide variant
Location: chr1:44214747 (GRCh38)
Gene constraint: LOEUF 0.691 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 75.46 · 18 PDB
Residue 81: an α-helix

Full DMAP1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DMAP1 p.Arg224Ter Uncertain significance ★★ same type
DMAP1 p.Arg283His Uncertain significance ★★ ⚠ same type
DMAP1 p.Tyr196Ser Uncertain significance ★★ ⚠ same type
DMAP1 p.Arg226Trp Likely pathogenic ★ same type
DMAP1 c.1344+3A>G Uncertain significance ★ same type
DMAP1 c.394-1G>C Uncertain significance ★ same type
DMAP1 p.Ala207Thr Uncertain significance ★ ⚠ same type
DMAP1 p.Ala2Thr 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/dmap1-p-arg81his (accessed [today's date]).

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