SPSB3

Chr 16

splA/ryanodine receptor domain and SOCS box containing 3

Also known as: C16orf31, SSB3

NCBI Gene: 90864ENSG00000162032UniProt: Q6PJ21

Enables ubiquitin-like ligase-substrate adaptor activity. Involved in several processes, including negative regulation of cGAS/STING signaling pathway; negative regulation of epithelial to mesenchymal transition; and protein K48-linked ubiquitination. Part of Cul5-RING ubiquitin ligase complex. Is active in nucleus. [provided by Alliance of Genome Resources, Jul 2025]

144
ClinVar variants
39
Pathogenic / LP
0.04
pLI score
0
Active trials
Clinical Summary— SPSB3
⚡
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.34) despite low pLI — interpret in context.
📋
ClinVar Variants
39 Pathogenic / Likely Pathogenic· 96 VUS of 144 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
0.71LOEUF
pLI 0.036
Z-score 2.37
OE 0.34 (0.17–0.71)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
0.78Z-score
OE missense 0.86 (0.77–0.96)
219 obs / 254.2 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.34 (0.17–0.71)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.86 (0.77–0.96)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.1.38
0≤1.21.6
LoF obs/exp: 5 / 14.8Missense obs/exp: 219 / 254.2Syn Z: -3.16

ClinVar Variant Classifications

144 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic38
Likely Pathogenic1
VUS96
Likely Benign7
Benign2
38
Pathogenic
1
Likely Pathogenic
96
VUS
7
Likely Benign
2
Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
38
0
38
Likely Pathogenic
0
0
1
0
1
VUS
0
79
17
0
96
Likely Benign
0
5
0
2
7
Benign
0
0
1
1
2
Total084573144

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

View in ClinVar →

Protein Context — Lollipop Plot

SPSB3 · protein map & ClinVar variants

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

OMIM — Genotype-Phenotype Relationships

1 OMIM entry

OMIM
Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →

External Resources

Links to major genomics databases and tools