The protein contains a Storkhead-box winged-helix domain and is differentially expressed in decidual tissue. Mutations in this gene cause autosomal recessive developmental and epileptic encephalopathy with microcephaly and growth restriction, typically with onset in infancy or early childhood. The gene shows high constraint against loss-of-function variants (LOEUF 0.425), suggesting intolerance to protein-disrupting mutations.

Summary from RefSeq
Research Assistant →
0
Active trials
1
Pubs (1 yr)
99
P/LP submissions
0%
P/LP missense
0.42
LOEUF
LOF
Mechanism· predicted
Clinical SummarySTOX2
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.22) despite low pLI — interpret in context.
📋
ClinVar Variants
99 unique Pathogenic / Likely Pathogenic· 129 VUS of 247 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint
0.42LOEUF
pLI 0.484
Z-score 3.84
OE 0.22 (0.120.42)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint
1.33Z-score
OE missense 0.84 (0.770.91)
446 obs / 532.5 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.22 (0.120.42)
00.351.4
Missense OE0.84 (0.770.91)
00.61.4
Synonymous OE1.05
01.21.6
LoF obs/exp: 6 / 27.8Missense obs/exp: 446 / 532.5Syn Z: -0.54
DN
0.4884th %ile
GOF
0.6150th %ile
LOF
0.64top 25%

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

LOFprediction above median · LOEUF 0.42

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

247 submitted variants in ClinVar

Classification Summary

Pathogenic90
Likely Pathogenic9
VUS129
Likely Benign6
90
Pathogenic
9
Likely Pathogenic
129
VUS
6
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
90
0
90
Likely Pathogenic
0
0
9
0
9
VUS
0
119
10
0
129
Likely Benign
0
3
2
1
6
Benign
0
0
0
0
0
Total01221111234

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

View in ClinVar →

Protein Context — Lollipop Plot

STOX2 · 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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Clinical Literature
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