DSG4

Chr 18AR

desmoglein 4

Also known as: CDGF13, CDHF13, HYPT6, LAH

DSG4 encodes desmoglein-4, a transmembrane component of desmosomes that mediates cell-cell adhesion in epithelial cells and coordinates the transition from proliferation to differentiation in hair follicle keratinocytes. Mutations cause autosomal recessive hypotrichosis characterized by impaired hair growth. The gene shows low constraint to loss-of-function variation (pLI near zero), consistent with its recessive inheritance pattern.

GeneReviewsOMIMResearchSummary from RefSeq, OMIM, UniProt
LOFmechanismARLOEUF 0.821 OMIM phenotype
Clinical SummaryDSG4
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
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ClinVar Variants
59 unique Pathogenic / Likely Pathogenic· 206 VUS of 388 total submissions
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GeneReview available — DSG4
Authoritative clinical overview · Recommended first read
Open GeneReview ↗

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
0.82LOEUF
pLI 0.000
Z-score 2.53
OE 0.60 (0.440.82)
Tolerant

Typical tolerance to LoF variation

Missense Constraint
-1.02Z-score
OE missense 1.12 (1.051.19)
654 obs / 584.8 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.60 (0.440.82)
00.351.4
Missense OE1.12 (1.051.19)
00.61.4
Synonymous OE0.95
01.21.6
LoF obs/exp: 27 / 45.4Missense obs/exp: 654 / 584.8Syn Z: 0.62
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitiveDSG4-related hypotrichosis, localisedLOFAR

Predictions shown for reference only — model trained on dominant genes, not applicable to AR conditions.

DN
0.75top 25%
GOF
0.78top 25%
LOF
0.2874th %ile

The Badonyi & Marsh prediction model was trained exclusively on dominant disease genes. Predictions are not reliable for genes with autosomal recessive inheritance and are shown at reduced opacity for reference only.

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

ClinVar Variant Classifications

388 submitted variants in ClinVar

Classification Summary

Pathogenic51
Likely Pathogenic8
VUS206
Likely Benign55
Benign33
Conflicting33
51
Pathogenic
8
Likely Pathogenic
206
VUS
55
Likely Benign
33
Benign
33
Conflicting

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
9
3
39
0
51
Likely Pathogenic
6
1
1
0
8
VUS
1
176
21
8
206
Likely Benign
0
17
9
29
55
Benign
0
4
21
8
33
Conflicting
33
Total162019145386

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

DSG4 · 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.

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Clinical Literature
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