Interaction between ferric carboxymaltose and denosumab causing severe hypocalcaemia and hypophosphataemia in a patient without chronic kidney disease

Intern Med J. 2023 Jul;53(7):1273-1276. doi: 10.1111/imj.16156. Epub 2023 Jun 29.

Abstract

Coadministration of ferric carboxymaltose and denosumab may cause hypocalcaemia and hypophosphataemia; however, this interaction is not well-described in the literature and has typically been described in patients with chronic kidney disease (CKD). We present a case of this interaction in a patient without preexisting CKD. We suggest the use of alternative iron preparations and an interval of at least 4 weeks between administrations.

Keywords: denosumab; ferric carboxymaltose; hypocalcaemia; hypophosphataemia; osteoporosis.

Publication types

  • Case Reports

MeSH terms

  • Anemia, Iron-Deficiency* / drug therapy
  • Denosumab / adverse effects
  • Humans
  • Hypocalcemia* / chemically induced
  • Hypocalcemia* / drug therapy
  • Hypophosphatemia* / chemically induced
  • Renal Insufficiency, Chronic* / complications
  • Renal Insufficiency, Chronic* / drug therapy

Substances

  • ferric carboxymaltose
  • Denosumab