SEPTIN8

Chr 5

septin 8

Also known as: SEP2, SEPT8, Septin-8

NCBI Gene: 23176ENSG00000164402UniProt: Q92599

This gene is a member of the septin family of nucleotide binding proteins, originally described in yeast as cell division cycle regulatory proteins. Septins are highly conserved in yeast, Drosophila, and mouse, and appear to regulate cytoskeletal organization. Disruption of septin function disturbs cytokinesis and results in large multinucleate or polyploid cells. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2014]

110
ClinVar variants
14
Pathogenic / LP
0.08
pLI score
0
Active trials
Clinical Summary— SEPTIN8
⚡
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.28) despite low pLI — interpret in context.
📋
ClinVar Variants
14 Pathogenic / Likely Pathogenic· 94 VUS of 110 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Moderate LoF intolerance
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.
0.55LOEUF
pLI 0.084
Z-score 3.11
OE 0.28 (0.15–0.55)
Moderately constrained

More LoF-intolerant than ~75% of genes

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.
1.57Z-score
OE missense 0.74 (0.66–0.83)
218 obs / 293.7 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.0.28 (0.15–0.55)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.74 (0.66–0.83)
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.0.87
0≤1.21.6
LoF obs/exp: 6 / 21.6Missense obs/exp: 218 / 293.7Syn Z: 1.15

ClinVar Variant Classifications

110 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic13
Likely Pathogenic1
VUS94
Likely Benign2
13
Pathogenic
1
Likely Pathogenic
94
VUS
2
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
13
0
13
Likely Pathogenic
0
0
1
0
1
VUS
0
92
2
0
94
Likely Benign
0
0
1
1
2
Benign
0
0
0
0
0
Total092171110

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

View in ClinVar →

Protein Context — Lollipop Plot

SEPTIN8 · 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
SEPTIN 8; SEPT8
MIM #608418 · *
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

No open access results found

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