PPIB and thalassemia: The β‐thalassemia mutations in the order of allele frequency between eight regions of Meizhou, the mutations were IVS‐II‐654(C → T) > CD41‐42(‐TCTT) > ‐28(A → G) > CD17(A → T) in Xingning, Meijiang, Jiaoling and Pingyuan (similar to Jiangxi), IVS‐II‐654(C → T) > CD41‐42(‐TCTT) > CD17(A → T) > ‐28(A → G) in Wuhua and Dabu (similar to Fujian), CD41‐42(‐TCTT) > IVS‐II‐654(C → T) > CD17(A → T) > ‐28(A → G) in Meixian and Fengshun.