RFC2
Chr 7replication factor C subunit 2
Also known as: RFC40
This gene encodes the 40 kD subunit of replication factor C (RFC), a protein complex that loads proliferating cell nuclear antigen (PCNA) onto DNA during replication by DNA polymerases delta and epsilon. Biallelic mutations cause severe combined immunodeficiency with microcephaly, growth restriction, and sensitivity to DNA-damaging agents, following autosomal recessive inheritance. The gene shows low constraint against loss-of-function variants, consistent with the recessive inheritance pattern observed clinically.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Typical tolerance to LoF variation
Mild missense constraint
The highest-scoring mechanism for this gene is dominant-negative.
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
0 submitted variants in ClinVar
Protein Context — Lollipop Plot
RFC2 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
3D Protein StructureAlphaFold
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
External Resources
Links to major genomics databases and tools