# Itraconazole Overview

**Itraconazole** is best known as an antifungal medicine, but it is now attracting significant interest as a **repurposed anticancer drug**. It is especially relevant because it appears to target several tumour-survival pathways at once while also having a long-established safety history from routine clinical use.

### At a Glance

* **What it is:** An antifungal medicine being repurposed for oncology
* **Why it matters:** It inhibits Hedgehog signalling, angiogenesis, AKT / mTOR, Wnt / β-catenin, and multidrug-resistance pathways
* **Best-supported use today:** Investigational adjunctive use alongside standard treatment
* **Strongest evidence:** Early clinical signals in prostate cancer, NSCLC, basal cell carcinoma, ovarian cancer, and combination-retrospective settings
* **Main limitation:** Most cancer evidence remains early-stage, retrospective, or non-definitive

### Why itraconazole is studied in oncology

Itraconazole moved into oncology research because it appears to act on several key tumour pathways that are not part of its original antifungal purpose.

Research suggests itraconazole may:

* inhibit the Hedgehog pathway
* reduce tumour angiogenesis
* suppress AKT / mTOR signalling
* modulate Wnt / β-catenin activity
* help reverse multidrug resistance

### Clinical Positioning

Current evidence best supports itraconazole as an **investigational repurposed adjunct**, not as a replacement for standard cancer therapy.

Its strongest practical interest is in the overlap between:

* pathway-driven tumour biology
* repurposed-drug strategies
* combination protocols with chemotherapy
* angiogenesis-focused treatment logic

### Evidence Quality Rating

**3.5/5 — Moderate evidence with meaningful early clinical signals**

This rating reflects broad mechanistic interest, multiple human studies, and real clinical-response signals, but also acknowledges that much of the oncology evidence remains early, small, or retrospective.

### Where to Go Next

* [Evidence Summary](/myhealingcommunity-docs/off-label-drugs-for-cancer/itraconazole-in-oncology/evidence-summary.md)
* [Anticancer Mechanisms](/myhealingcommunity-docs/off-label-drugs-for-cancer/itraconazole-in-oncology/anticancer-mechanisms.md)
* [Evidence by Cancer Type](/myhealingcommunity-docs/off-label-drugs-for-cancer/itraconazole-in-oncology/itraconazole-evidence-by-cancer-type.md)
* [Pharmacokinetics & Dosing](/myhealingcommunity-docs/off-label-drugs-for-cancer/itraconazole-in-oncology/pharmacokinetics-and-dosing.md)
* [Safety & Interactions](/myhealingcommunity-docs/off-label-drugs-for-cancer/itraconazole-in-oncology/safety-and-interactions.md)
* [Sourcing Quality Itraconazole](/myhealingcommunity-docs/off-label-drugs-for-cancer/itraconazole-in-oncology/sourcing-quality-itraconazole.md)

### Key References

Repurposing itraconazole for the treatment of cancer\
<https://pmc.ncbi.nlm.nih.gov/articles/PMC6769799/>

Repurposed itraconazole for use in the treatment of malignancies as a promising therapeutic strategy\
<https://www.sciencedirect.com/science/article/abs/pii/S1043661821003328>

Repurposing itraconazole as an anticancer agent\
<https://pmc.ncbi.nlm.nih.gov/articles/PMC5536437/>

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