SPMIP3
Chr 1sperm microtubule inner protein 3
Also known as: C1orf100
110
ClinVar variants
93
Pathogenic / LP
0.00
pLI score
0
Active trials
Clinical Summary— SPMIP3
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
93 Pathogenic / Likely Pathogenic· 11 VUS of 110 total submissions
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
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.
1.54LOEUF
pLI 0.000
Z-score 0.20
OE 0.94 (0.59–1.54)
Highly tolerant — LoF variants common in population
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.
-0.18Z-score
OE missense 1.05 (0.89–1.25)
91 obs / 86.4 exp
Tolerant to missense variation
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.0.94 (0.59–1.54)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.1.05 (0.89–1.25)
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.0.96
0≤1.21.6
LoF obs/exp: 11 / 11.8Missense obs/exp: 91 / 86.4Syn Z: 0.19
ClinVar Variant Classifications
110 submitted variants in ClinVar
Classification Summary
Pathogenic86
Likely Pathogenic7
VUS11
Likely Benign1
86
Pathogenic
7
Likely Pathogenic
11
VUS
1
Likely Benign
Curated Variants Distribution
Classified variants from ClinVar · 5 ACMG categories· variant type breakdown unavailable
| Classification | LoF | Missense + Inframe | Non-coding | Synonymous | Total |
|---|---|---|---|---|---|
Pathogenic | — | — | — | — | 86 |
Likely Pathogenic | — | — | — | — | 7 |
VUS | — | — | — | — | 11 |
Likely Benign | — | — | — | — | 1 |
Benign | — | — | — | — | 0 |
| Total | — | 105 | |||
Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
SPMIP3 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
OMIM — Genotype-Phenotype
No OMIM entries found.
External Resources
Links to major genomics databases and tools
Variant Interpretation
Population Databases
Gene Resources
Expert Curation
ClinGen
Expert-curated gene-disease validity
GenCC
Gene Curation Coalition — multi-curator classifications
Orphanet
Rare disease encyclopedia and gene-disease associations
SFARI Gene
Autism-gene association scoring (SFARI)
PanelApp
Gene panels for rare disease diagnostics (Genomics England)
LOVD
Leiden Open Variation Database — variant listings
GeneReviews
Expert-authored summaries of heritable conditions (NCBI)
Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
Normal spermatogenesis and fertility in Spmip8 deficiency male mice.
Zhang Z et al.·Biochem Biophys Rep
2026
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
No open access results found
Top 5 resultsSearch Europe PMC ↗
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →External Resources
Links to major genomics databases and tools
Variant Interpretation
Population Databases
Gene Resources
Expert Curation
ClinGen
Expert-curated gene-disease validity
GenCC
Gene Curation Coalition — multi-curator classifications
Orphanet
Rare disease encyclopedia and gene-disease associations
SFARI Gene
Autism-gene association scoring (SFARI)
PanelApp
Gene panels for rare disease diagnostics (Genomics England)
LOVD
Leiden Open Variation Database — variant listings
GeneReviews
Expert-authored summaries of heritable conditions (NCBI)