FAM78B

Chr 1

family with sequence similarity 78 member B

ResearchGenerating clinical summary…
GOFmechanismLOEUF 0.76
Clinical SummaryFAM78B
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.24) despite low pLI — interpret in context.
📋
ClinVar Variants
25 VUS of 25 total submissions
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
0.76LOEUF
pLI 0.311
Z-score 2.03
OE 0.24 (0.100.76)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?
1.55Z-score
OE missense 0.65 (0.550.77)
100 obs / 154.0 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.24 (0.100.76)
00.351.4
Missense OE?0.65 (0.550.77)
00.61.4
Synonymous OE?0.95
01.21.6
LoF obs/exp: 2 / 8.3Missense obs/exp: 100 / 154.0Syn Z: 0.32

This gene — mechanism propensity

DN
0.3793th %ile
GOF
0.6443th %ile
LOF
0.52top 25%

The highest-scoring mechanism for this gene is gain-of-function.

GOFprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

25 submitted variants in ClinVar

Classification Summary

VUS25
25
VUS

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
0
0
0
Likely Pathogenic
0
0
0
0
0
VUS
0
25
0
0
25
Likely Benign
0
0
0
0
0
Benign
0
0
0
0
0
Total0250025

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

View in ClinVar →

19 pathogenic / likely-pathogenic (of 22) ClinVar copy-number / structural variants overlap FAM78B — these span large chromosomal regions, not the gene specifically, and are excluded from the counts above. Explore in CNV tools →

Protein Context — Lollipop Plot

FAM78B · protein map & ClinVar variants

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

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →