SAMD5

Chr 6

sterile alpha motif domain containing 5

Also known as: dJ875H10.1

The SAMD5 protein is predicted to regulate intracellular signal transduction and localizes to the cytoplasm. Mutations cause autosomal recessive developmental and epileptic encephalopathy with onset in infancy, characterized by severe intellectual disability, seizures, and developmental delay. The gene shows tolerance to loss-of-function variants with low constraint scores.

OMIMResearchSummary from RefSeq
MultiplemechanismLOEUF 1.70
Clinical SummarySAMD5
Population Constraint (gnomAD)
Low constraint (pLI 0.01) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.70LOEUF
pLI 0.012
Z-score 0.50
OE 0.74 (0.331.70)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
0.42Z-score
OE missense 0.87 (0.721.06)
74 obs / 85.0 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.74 (0.331.70)
00.351.4
Missense OE0.87 (0.721.06)
00.61.4
Synonymous OE0.80
01.21.6
LoF obs/exp: 3 / 4.1Missense obs/exp: 74 / 85.0Syn Z: 1.00
DN
0.6259th %ile
GOF
0.6736th %ile
LOF
0.4431th %ile

This gene has evidence for multiple mechanisms of pathogenicity (gain-of-function and dominant-negative). Both the Badonyi & Marsh prediction and the broader genomic evidence point to gain-of-function as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.

GOFprediction above median
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

SAMD5 · 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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