CYP27A1 and acromegaly: Acromegaly and control groups, as well as active/controlled acromegaly groupswere compared in terms of alkaline phosphatase (ALP), calcium, magnesium, phosphorus, parathormone (PTH) and 25-OH Vitamin D (25[OH]D), and C-terminal telopeptide of type 1 collagen (CTX).