FANCG

Chr 9

FA complementation group G

Also known as: FAG, XRCC9

NCBI Gene: 2189ENSG00000221829UniProt: O15287

The Fanconi anemia complementation group (FANC) currently includes FANCA, FANCB, FANCC, FANCD1 (also called BRCA2), FANCD2, FANCE, FANCF, FANCG, FANCI, FANCJ (also called BRIP1), FANCL, FANCM and FANCN (also called PALB2). The previously defined group FANCH is the same as FANCA. Fanconi anemia is a genetically heterogeneous recessive disorder characterized by cytogenetic instability, hypersensitivity to DNA crosslinking agents, increased chromosomal breakage, and defective DNA repair. The members of the Fanconi anemia complementation group do not share sequence similarity; they are related by their assembly into a common nuclear protein complex. This gene encodes the protein for complementation group G. [provided by RefSeq, Jul 2008]

GeneReviewsResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtFanconi anemia complementation group G

Clinical highlights

Gene-disease validity (ClinGen)
Fanconi anemia complementation group G · ARDefinitivesufficient evidence for diagnostic panels
Interpreting a novel variant
Loss of function is the curated mechanism (Gene2Phenotype), though the gene is not strongly LoF-constrained in the population — weigh truncating variants against that tolerance.Curated gene-level mechanism — a prior for triage, not a per-variant call.
2
Active trials
16
Pubs (1 yr)
—
P/LP submissions
—
P/LP missense
1.09
LOEUF
LOF
Mechanism· G2P
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GeneReview available — FANCG
Authoritative clinical overview · Recommended first read
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Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
LoF Constraint?
1.09LOEUF
pLI 0.000
Z-score 1.15
OE 0.78 (0.57–1.09)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
0.24Z-score
OE missense 0.96 (0.87–1.06)
301 obs / 313.2 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.78 (0.57–1.09)
0≤0.351.4
Missense OE?0.96 (0.87–1.06)
0≤0.61.4
Synonymous OE?1.00
0≤1.21.6
LoF obs/exp: 25 / 32.0Missense obs/exp: 301 / 313.2Syn Z: 0.01

ClinVar Variant Classifications

0 submitted variants in ClinVar

ClinVar

Protein Context — Lollipop Plot

FANCG · protein map & ClinVar variants

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

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