FAM81B
Chr 5family with sequence similarity 81 member B
Located in nucleus. [provided by Alliance of Genome Resources, Jul 2025]
0
ClinVar variants
0
Pathogenic / LP
0.00
pLI score
0
Active trials
Clinical Summary— FAM81B
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
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.
1.14LOEUF
pLI 0.000
Z-score 1.01
OE 0.78 (0.55–1.14)
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 0.97 (0.86–1.08)
221 obs / 228.6 exp
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.0.78 (0.55–1.14)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.97 (0.86–1.08)
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.0.95
0≤1.21.6
LoF obs/exp: 20 / 25.5Missense obs/exp: 221 / 228.6Syn Z: 0.35
ClinVar Variant Classifications
0 submitted variants in ClinVar
Protein Context — Lollipop Plot
FAM81B · 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
FAMILY WITH SEQUENCE SIMILARITY 81, MEMBER A; FAM81A
MIM #621329 · *
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
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
Exome sequencing identifies RASSF1 and KLK3 germline variants in an Iranian multiple-case breast cancer family.
Radmanesh H et al.·Eur J Med Genet
2022
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
PanelApp
Gene panels for rare disease diagnostics (Genomics England)
LOVD
Leiden Open Variation Database — variant listings
GeneReviews
Expert-authored summaries of heritable conditions (NCBI)