FTSJ3

Chr 17

FtsJ RNA 2'-O-methyltransferase 3

Also known as: EPCS3, SPB1

NCBI Gene: 117246ENSG00000108592UniProt: Q8IY81

Although the function of this gene is not known, the existence of this gene is supported by mRNA and EST data. A possible function of the encoded protein can be inferred from amino acid sequence similarity to the E.coli FtsJ protein and to a mouse protein possibly involved in embryogenesis. [provided by RefSeq, Jul 2008]

0
Active trials
9
Pathogenic / LP
75
ClinVar variants
2
Pubs (1 yr)
-0.4
Missense Z
0.41
LOEUF
Clinical Summary— FTSJ3
⚡
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.26) despite low pLI — interpret in context.
📋
ClinVar Variants
9 Pathogenic / Likely Pathogenic· 64 VUS of 75 total submissions

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.
0.41LOEUF
pLI 0.037
Z-score 4.86
OE 0.26 (0.17–0.41)
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.
-0.42Z-score
OE missense 1.05 (0.98–1.13)
518 obs / 491.6 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.0.26 (0.17–0.41)
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 (0.98–1.13)
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.1.13
0≤1.21.6
LoF obs/exp: 13 / 50.2Missense obs/exp: 518 / 491.6Syn Z: -1.41
DN
0.7133th %ile
GOF
0.5170th %ile
LOF
0.3261th %ile

The highest-scoring mechanism for this gene is dominant-negative.

DNprediction 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

75 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic9
VUS64
Likely Benign2
9
Pathogenic
64
VUS
2
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
9
0
9
Likely Pathogenic
0
0
0
0
0
VUS
0
63
1
0
64
Likely Benign
0
2
0
0
2
Benign
0
0
0
0
0
Total06510075

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

View in ClinVar →

Protein Context — Lollipop Plot

FTSJ3 · 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

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
Landmark / reviewRecent case evidence
Full-Text Mentions
NLP-detected gene mentions in article bodies · via PubTator3
PubTator3
Top 5 full-text resultsSearch PubTator3 ↗
Key Publications
Landmark & review papers · by relevance
PubMed
Top 3 results · since 2015Search PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

External Resources

Links to major genomics databases and tools

Franklin by Genoox
AI-powered variant curation and clinical analysis
DECIPHER
Genomic variants and phenotypes in rare disease patients