Protein FRA10AC1 is a protein that in humans is encoded by the C10orf4 gene. The protein encoded by this gene is a nuclear phosphoprotein of unknown function. The 5' UTR of this gene is part of a CpG island and contains a tandem CGG repeat region that normally consists of 8-14 repeats but can expand to over 200 repeats. The expanded allele becomes hypermethylated and is not transcribed; however, an expanded repeat region has not been associated with any disease phenotype. This gene is found within the rare FRA10A folate-sensitive fragile site. [provided by RefSeq]. Sequence Note: This RefSeq record was created from transcript and genomic sequence data to make the sequence consistent with the reference genome assembly. The genomic coordinates used for the transcript record were based on transcript alignments.