TBC1D22B

Chr 6

TBC1 domain family member 22B

Also known as: C6orf197

NCBI Gene: 55633ENSG00000065491UniProt: Q9NU19

Enables 14-3-3 protein binding activity. Predicted to be active in Golgi apparatus. [provided by Alliance of Genome Resources, Jul 2025]

66
ClinVar variants
6
Pathogenic / LP
0.03
pLI score
0
Active trials
Clinical Summary— TBC1D22B
⚡
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.29) despite low pLI — interpret in context.
📋
ClinVar Variants
6 Pathogenic / Likely Pathogenic· 59 VUS of 66 total submissions
Some data sources returned errors (1)

clinvar: Error: NCBI fetch failed: 429 https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esummary.fcgi

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.
0.50LOEUF
pLI 0.025
Z-score 3.71
OE 0.29 (0.17–0.50)
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.
2.42Z-score
OE missense 0.61 (0.54–0.69)
181 obs / 298.6 exp
Mild constraint

Moderately missense-constrained (top ~2.5%)

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.0.29 (0.17–0.50)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.61 (0.54–0.69)
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.0.91
0≤1.21.6
LoF obs/exp: 9 / 31.5Missense obs/exp: 181 / 298.6Syn Z: 0.73

ClinVar Variant Classifications

66 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic6
VUS59
Likely Benign1
6
Pathogenic
59
VUS
1
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
6
0
6
Likely Pathogenic
0
0
0
0
0
VUS
0
58
1
0
59
Likely Benign
0
1
0
0
1
Benign
0
0
0
0
0
Total0597066

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

View in ClinVar →

Protein Context — Lollipop Plot

TBC1D22B · 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