High lipoprotein(a) concentration is associated with moyamoya disease.

"Declarations Ethics approval and consent to participateEthics review and approval for this study were obtained from the ethics committees of the Second Affiliated Hospital of Nanchang University, China. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work was financially supported by the following: the National Key R&D Program of China (No. 2022YFE0209900, 2021YFC2500600, and 2021YFC2500602); the National Natural Science Foundation of China (No. 81700792, 82360181); the Natural Science Foundation of Jiangxi Province for Distinguished Young Scholars of China (Grant No. 2018ACB21035); the Natural Science Foundation of Jiangxi Province for Young Scientists of China (Grant No. 20171BAB215004); the Nanchang University Youth Teacher Training Fund (Grant No. PY201821); the Project of Jiangxi Provincial Health and Family Planning Commission (Grant No. 20185208); the Key R&D Program (general projects) of Jiangxi Provincial Department of Science and Technology (Grant No. 20202BBGL73040, and 20202BBEL53005); and the Applied research and cultivation program of Jiangxi Provincial Department of Science and Technology (Grant No. 20212BAG70012)."