CYP27A1 and osteoporosis: However, serum bone turnover biomarker levels of ALP and β-CTX were normal in this PLS3E10-16del/0 rats and patients with PLS3 mutations (Balasubramanian et al., 2018; Fahiminiya et al., 2014; Kämpe et al., 2017; Laine et al., 2015), so more in-depth research on pathogenesis of PLS3-related osteoporosis was needed in the future.