Case Series

Denosumab-Induced Severe Hypocalcaemia in Chronic Kidney Disease

Box 1

Based on the authors’ experience, our recommended practice points while considering denosumab in CKD patients to address potential hypocalcaemia.
Practice points for clinicians:
Prior to denosumab administration:
(1) Consult with the patient’s primary nephrologist prior to commencement of denosumab in
patients with Stage 4–5 CKD. Review the indication for denosumab.
(2) Check baseline calcium level prior to each dose of denosumab.
(3) Correct hypocalcaemia prior to initiating therapy. Review calcium-based phosphate binders
and calcitriol supplementation dosing, or initiate this therapy if hypocalcaemic.
(4) Identify other medications that may predispose to hypocalcaemia such as loop diuretics
(frusemide), calcimimetics (cinacalcet), steroids, bisphosphonates, calcitonin, barbiturates
and ketoconazole.
After denosumab administration:
(1) Clearly notify denosumab administration to all clinicians involved to raise awareness of
potential hypocalcaemia.
(2) Calcium levels should be monitored at least weekly following denosumab administration,
for up to 12 weeks.
(3) Identify declining calcium levels early. Optimize calcium and calcitriol therapy early to
prevent severe hypocalcaemia.
Information for patients:
(1) Patients with Stage 4–5 CKD should be counselled about the increased risk of hypocalcaemia
with denosumab.
(2) Patients should understand the importance of blood tests for detecting hypocalcaemia early.
(3) Patients should be advised about the signs and symptoms of hypocalcaemia.
(4) Patients should be advised to seek immediate medical attention should the following occur:
unusual fatigue, paraesthesia, muscle spasm, twitching, stiffness, confusion and/or seizures.