SMIM22

Chr 16

small integral membrane protein 22

Also known as: CASIMO1

NCBI Gene: 440335ENSG00000267795UniProt: K7EJ46

Involved in several processes, including lipid droplet formation; positive regulation of cell migration; and regulation of actin cytoskeleton organization. Predicted to be located in late endosome and membrane. [provided by Alliance of Genome Resources, Jul 2025]

38
ClinVar variants
27
Pathogenic / LP
0.00
pLI score
0
Active trials
Clinical Summary— SMIM22
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
27 Pathogenic / Likely Pathogenic· 11 VUS of 38 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.
1.95LOEUF
pLI 0.000
Z-score -1.36
OE 1.90 (0.81–1.95)
Tolerant

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.
-0.96Z-score
OE missense 1.42 (1.15–1.75)
60 obs / 42.4 exp
Tolerant

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.1.90 (0.81–1.95)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.1.42 (1.15–1.75)
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.1.39
0≤1.21.6
LoF obs/exp: 5 / 2.6Missense obs/exp: 60 / 42.4Syn Z: -1.33

ClinVar Variant Classifications

38 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic27
VUS11
27
Pathogenic
11
VUS

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories· variant type breakdown unavailable

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
————27
Likely Pathogenic
————0
VUS
————11
Likely Benign
————0
Benign
————0
Total—38

Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

SMIM22 · protein map & ClinVar variants

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

OMIM — Genotype-Phenotype

OMIM

No OMIM entries found.

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