BGLAP and type 1 diabetes mellitus: Systemic markers, including osteocalcin,(9, 10) RANKL,(11, 12) leptin,(13, 14, 15, 16) PTH,(3, 17) sclerostin,(18, 19, 20) or vitamin D,(21, 22) do not show clear relationships with BMD in children with T1DM.