FOXO4 and Calcium oxalate nephrolithiasis: The dual-luciferase reporter gene assay showed that FOXO4 functionally regulates SLC26A6 promoter and regulates its transcriptional activity.<h4>Conclusion</h4>During the formation of experimental calcium oxalate kidney stones in rats, CaSR activation promotes PKA-mediated FOXO4 phosphorylation, leading to upregulation of SLC26A6 expression through transcriptional mechanisms.