Guselkumab
| Evidence Level: L5 | Predicted Indications: 8 |
Table of Contents
Guselkumab: Drug-induced osteoporosis
One-Sentence Summary
Guselkumab is an IL-23 p19 inhibitor marketed in Canada as TREMFYA, with psoriasis as an established use. The TxGNN model predicts it may be effective for drug-induced osteoporosis, but this is a model prediction only, with 0 clinical trials and 0 publications currently supporting this direction.
Quick Overview
| Item | Content |
|---|---|
| Original Indication | Not recorded in the local data |
| Predicted New Indication | Drug-induced osteoporosis |
| TxGNN Prediction Score | 0.9984 |
| Evidence Level | L5 (model prediction only) |
| Canada Market Status | Marketed (marketed DINs: 4 of 4) |
| Number of DINs | 4 (marketed: 4) |
| Recommended Decision | Hold |
Why is This Prediction Reasonable?
Guselkumab selectively blocks the p19 subunit of IL-23. This cytokine drives Th17 cell differentiation and the IL-17/IL-22 inflammatory axis, which is central to psoriatic plaque development. IL-23/IL-17 signaling has also been implicated in bone remodeling, which is the only conceptual bridge to osteoporosis.
The data compiled for this report do not support a direct link between IL-23 inhibition and drug-induced osteoporosis. No trials, publications, or similarity analysis to the original indication are available. The high TxGNN score (0.9984) comes from the TxGNN model (deep learning) and may reflect similarities the model learned between related diseases, not biological evidence. At this stage the prediction is a hypothesis only.
Clinical Trial Evidence
Currently no related clinical trials registered.
Literature Evidence
Currently no related literature available.
Canada Market Information
| DIN | Product Name |
|---|---|
| 02559153 | TREMFYA I.V. |
| 02559145 | TREMFYA |
| 02469758 | TREMFYA |
| 02487314 | TREMFYA ONE-PRESS |
All four authorizations are valid single-ingredient products. Dosage form and approved indication details are not available in the data compiled for this report.
Safety Considerations
- Drug Interactions: 100 interactions are recorded. The most notable are listed below.
- Major: adalimumab.
- Moderate: warfarin, apixaban, rivaroxaban, dicoumarol, simvastatin, tacrolimus, theophylline, aminophylline, oxtriphylline, roflumilast, nifedipine, lidocaine, fentanyl, hydrocodone, and the tetanus toxoid vaccine.
- Minor: zinc salts (sulfate, acetate, gluconate, chloride).
For warnings and contraindications, please refer to the package insert.
Conclusion and Next Steps
Decision: Hold
Rationale: The prediction rests on a model score alone, with no clinical trials, no literature, and no clear mechanistic link between IL-23 blockade and drug-induced osteoporosis. Evidence is at the lowest level (L5).
For context, the same analysis found far better-supported predictions for this drug:
- Psoriasis (L1, Proceed with Guardrails): this is already an approved use, so it confirms existing use rather than repurposing.
- Ulcerative colitis (L1, Proceed with Guardrails): supported by Phase 2b/3 (QUASAR) and Phase 3 (ASTRO) trials.
These two are better candidates for further evaluation than drug-induced osteoporosis.
To proceed, the following is needed:
- Preclinical or mechanistic evidence linking IL-23/IL-17 signaling to bone loss in drug-induced osteoporosis
- A literature review for any clinical or observational signal on bone outcomes in patients treated with IL-23 inhibitors
- Package insert warnings and contraindications for the Canadian products
- Detailed mechanism of action data and a similarity analysis against the original indication
- Confirmation of the approved indication text for each DIN
Disclaimer
This content is for research purposes only and does not constitute medical advice. Clinical validation is required before any clinical application.