Ubiquitously expressed with higher expression in brain, heart, skeletal muscle, kidney and liver. Expansion of a polymorphic CGG repeat within the 5'-UTR of this gene FRA10AC1 may be the cause of folate-sensitive fragile site FRA10A expression which is characterized by chromosomal breakage under specific cell culture conditions. No distinct phenotype has been associated with expression of FRA10A. Nevertheless, some studies have proposed that this fragile site expression might be associated with intellectual disability, tumorigenesis, or neurological disorders. However, these associations can be attributed to ascertainment bias. Chimeric cDNA.