DMAP1

Chr 1

DNA methyltransferase 1 associated protein 1

Also known as: DNMAP1, DNMTAP1, EAF2, MEAF2, SWC4

The protein functions as a transcriptional regulator that both represses and activates gene expression through interactions with histone-modifying complexes, including histone deacetylases and the NuA4 histone acetyltransferase complex. DMAP1 mutations cause autosomal recessive intellectual disability with variable additional features including microcephaly and seizures. The gene shows moderate constraint against loss-of-function variants, suggesting some intolerance to complete protein loss.

OMIMResearchSummary from RefSeq, UniProt
DNmechanismLOEUF 0.55
Clinical SummaryDMAP1
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.29) despite low pLI — interpret in context.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint
0.55LOEUF
pLI 0.041
Z-score 3.22
OE 0.29 (0.170.55)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint
2.29Z-score
OE missense 0.63 (0.550.71)
186 obs / 297.3 exp
Mild constraint

Moderately missense-constrained (top ~2.5%)

Observed / Expected Ratios
LoF OE0.29 (0.170.55)
00.351.4
Missense OE0.63 (0.550.71)
00.61.4
Synonymous OE1.01
01.21.6
LoF obs/exp: 7 / 24.0Missense obs/exp: 186 / 297.3Syn Z: -0.05
DN
0.6552th %ile
GOF
0.4776th %ile
LOF
0.52top 25%

The highest-scoring mechanism for this gene is dominant-negative.

DNprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

DMAP1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
Open Research Assistant →