Xin-Yu Li, Wen-Kai Yu, Jing-Hao Wu, Wen-Jun He, Yu-Nan Cheng, Kai Gao, Yi-Han Wei, Yu-Sheng Li. "Tryptophan metabolism-related gene CYP1B1 serves as a shared biomarker for both Parkinson’s disease and insomnia." Scientific Reports, 2025. doi:10.1038/s41598-024-84362-8