FGF23 (fibroblast growth factor 23) inhibits phosphate transport in the renal tubule and reduces calcitriol production by the kidney. Tumor production of FGF23, Secreted frizzled-related protein 4 and matrix extracellular phosphoglycoprotein (MEPE) have all been identified as possible causative agents for the hypophosphatemia.
Oncogenic osteomalacia
Metabolic bone disease
Endocrine bone disease
Vitamin D toxicity
Secondary hyperparathyroidism
Steroid-induced osteoporosis
Tertiary hyperparathyroidism
Normophosphatemic familial tumoral calcinosis