STAC3

Chr 12AR

SH3 and cysteine rich domain 3

Also known as: CMYO13, CMYP13, MYPBB, NAM

The protein encoded by this gene is a component of the excitation-contraction coupling machinery of muscles. This protein is a member of the Stac gene family and contains an N-terminal cysteine-rich domain and two SH3 domains. Mutations in this gene are a cause of Native American myopathy. [provided by RefSeq, Nov 2013]

OMIMResearchGenerating clinical summary…
LOFmechanismARLOEUF 0.751 OMIM phenotype
Clinical SummarySTAC3
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Gene-Disease Validity (ClinGen)
Bailey-Bloch congenital myopathy · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — 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?
0.75LOEUF
pLI 0.000
Z-score 2.44
OE 0.44 (0.270.75)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?
0.91Z-score
OE missense 0.83 (0.730.94)
180 obs / 217.6 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.44 (0.270.75)
00.351.4
Missense OE?0.83 (0.730.94)
00.61.4
Synonymous OE?0.82
01.21.6
LoF obs/exp: 10 / 22.5Missense obs/exp: 180 / 217.6Syn Z: 1.26
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitiveSTAC3-related congenital myopathy and malignant hyperthermiaLOFAR

This gene — mechanism propensity

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

DN
0.6260th %ile
GOF
0.6639th %ile
LOF
0.4332th %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

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

STAC3 · protein map & ClinVar variants

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

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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