What is the relationship between sclerostin and cardiovascular events in hemodialysis patients?

Dear Sir, We have read with great interest the paper entitled 'Association of sclerostin with cardiovascular events and mortality in dialysis patients' by Zou et al. [[1]]. However, in HD patients, the Kaplan-Meier analysis showed that only CVE-free survival rates notably declined in the high serum sclerostin group compared to the low serum sclerostin group( I p i = 0.029). [Extracted from the article]