Genetic variation of promoter sequence modulates XBP1 expression and genetic risk for vitiligo. oleh Yunqing Ren, Sen Yang, Shengxin Xu, Min Gao, Wei Huang, Tianwen Gao, Qiaoyun Fang, Cheng Quan, Chi Zhang, Liangdan Sun, Yanhua Liang, Jianwen Han, Zhimin Wang, Fengyu Zhang, Youwen Zhou, Jianjun Liu, Xuejun Zhang