XTRENBO
Xtrenbo is a RANK ligand inhibitor used to prevent skeletal-related events in patients with multiple myeloma or bone metastases from solid tumors. It is also indicated for the treatment of hypercalcemia of malignancy that has not responded to bisphosphonate therapy. Additionally, the drug is used for adults and skeletally mature adolescents with giant cell tumor of bone that is unresectable or where surgical intervention would result in severe morbidity.
How XTRENBO Works
Xtrenbo binds to RANKL, a protein essential for the formation, function, and survival of osteoclasts, which are the cells responsible for bone resorption. By preventing RANKL from activating the RANK receptor on the surface of osteoclasts and their precursors, the drug inhibits bone breakdown and the subsequent release of calcium. This mechanism modulates bone pathology in solid tumors and reduces osteolysis and tumor growth in giant cell tumors of bone.
Details
- Status
- Prescription
- First Approved
- 2025-09-26
- Routes
- INJECTION
- Dosage Forms
- SOLUTION
XTRENBO Approval History
What XTRENBO Treats
4 indicationsXTRENBO is approved for 4 conditions since its original approval in 2025. These indications span multiple therapeutic areas including oncology, immunology, and more.
- Multiple Myeloma
- Bone Metastasis
- Giant Cell Tumor of Bone
- Hypercalcemia of Malignancy
Pharmacists can substitute XTRENBO for Prolia without calling the prescriber. This is a lower-cost alternative with no clinically meaningful differences.
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Active Pipeline
Ongoing clinical trials by development phase
Key Completed Trials
Completed studies with published results, ranked by significance
Trial Timeline
Full development history with FDA approval milestones
Understanding FDA Approval Types
| Count | Type | What it means |
|---|---|---|
| - | ORIG | Original approval - drug first enters market |
| - | SUPPL - Efficacy | New indication (new disease/condition approved) |
| - | SUPPL - Labeling | Label text changes (warnings, dosing updates) |
| - | SUPPL - Manufacturing | Production changes (new facility) |
| - | SUPPL - Chemistry | Formulation changes (new dosage strength) |
Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.
XTRENBO FDA Label Details
ProIndications & Usage
FDA Label (PDF)Xtrenbo is a RANK ligand (RANKL) inhibitor indicated for: Prevention of skeletal-related events in patients with multiple myeloma and in patients with bone metastases from solid tumors. Treatment of adults and skeletally mature adolescents with giant cell tumor of bone that is unresectable or where surgical resection is likely to result in severe morbidity. Treatment of hypercalcemia of malignancy refractory to bisphosphonate therapy. 1.1 Multiple Myeloma and Bone Metastasis from Solid Tumors Xtrenbo is indicated for the prevention of skeletal-related events in patients with multiple myeloma a...
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Data Sources
Data sourced from official FDA and NIH databases. Click links to verify on original sources.