Development of Hypocalcemia Due to Targeted Therapies

ABSTRACT

Novel biological agents are available for the treatment of malignancies, and apart from their utility, they may also have several side effects. The effects on the endocrine system are frequently observed, among which thyroid dysfunctions are common and well-characterized, whereas parathyroid dysfunctions are rare and not well characterized. Herein, we describe two of our patients that displayed hypoparathyroidism and were treated with epidermal growth factor receptor (EGFR) inhibitor erlotinib, vascular endothelial growth factor receptor, and EGFR inhibitor vandetanib.