SMARCD1

Chr 12AD

SWI/SNF related BAF chromatin remodeling complex subunit D1

Also known as: BAF60A, CRACD1, CSS11, Rsc6p

The encoded protein is a component of the SWI/SNF chromatin remodeling complex that uses ATP-dependent mechanisms to alter chromatin structure and regulate gene transcription. Heterozygous loss-of-function mutations cause Coffin-Siris syndrome 11, an autosomal dominant disorder characterized by developmental delay, intellectual disability, and distinctive facial features. The high constraint scores (pLI 0.999, LOEUF 0.206) indicate the gene is highly intolerant to loss-of-function variants, consistent with haploinsufficiency as the disease mechanism.

GeneReviewsOMIMResearchSummary from RefSeq, OMIM, UniProt, Mechanism
LOFmechanismADLOEUF 0.211 OMIM phenotype
Clinical SummarySMARCD1
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 1.00). One damaged copy is likely sufficient to cause disease.
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ClinVar Variants
13 unique Pathogenic / Likely Pathogenic· 89 VUS of 134 total submissions
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GeneReview available — SMARCD1
Authoritative clinical overview · Recommended first read
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Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Dual constrained — LoF & missense intolerant
LoF Constraint
0.21LOEUF
pLI 0.999
Z-score 4.78
OE 0.07 (0.030.21)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint
3.44Z-score
OE missense 0.42 (0.360.49)
117 obs / 278.7 exp
Constrained

Highly missense-constrained (top ~0.1%)

Observed / Expected Ratios
LoF OE0.07 (0.030.21)
00.351.4
Missense OE0.42 (0.360.49)
00.61.4
Synonymous OE0.88
01.21.6
LoF obs/exp: 2 / 30.5Missense obs/exp: 117 / 278.7Syn Z: 0.90
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
moderateSMARCD1-related syndromic intellectual disabilityOTHERAD
DN
0.4090th %ile
GOF
0.2298th %ile
LOF
0.81top 5%

The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).

LOFprediction above median · 23% of P/LP variants are LoF · LOEUF 0.21

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.

ClinVar Variant Classifications

134 submitted variants in ClinVar

Classification Summary

Pathogenic11
Likely Pathogenic2
VUS89
Likely Benign11
Benign9
Conflicting1
11
Pathogenic
2
Likely Pathogenic
89
VUS
11
Likely Benign
9
Benign
1
Conflicting

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
3
4
4
0
11
Likely Pathogenic
0
2
0
0
2
VUS
7
79
3
0
89
Likely Benign
0
4
3
4
11
Benign
0
1
8
0
9
Conflicting
1
Total1090184123

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

View in ClinVar →

Protein Context — Lollipop Plot

SMARCD1 · 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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