# Investigating the Potential Role of a Novel Quadrate Combination Therapy Mifepristone(Antiprogestrone), Tamoxifen, Retinoic Acid and Cannabidiol ( Selective Cyp 26 Inhibitor) for Treating Early Breast Cancer

Source: https://onco.cc/trials/nct05016349/  
OnCo record `nct05016349` (Trial). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

A phase 3 trial of Tretinoin, Mifepristone, Alitretinoin and Tamoxifen in Breast cancer, run by Mahmoud Ramadan mohamed Elkazzaz, with a status the registry has not verified recently.

## Summary

Investigating the Potential Role of a Novel Quadrate Combination Therapy Mifepristone(Antiprogestrone), Tamoxifen, Retinoic Acid and Cannabidiol ( Selective Cyp 26 Inhibitor) for Treating Early Breast Cancer is a phase 3 interventional study registered as NCT05016349 by Mahmoud Ramadan mohamed Elkazzaz, with 160 participants planned, started 2021-08 and due to reach its primary completion in 2021-10. Interventions recorded: All trans-retinoic acid, 13-Cis Retinoic Acid plus Tocopherol, Mifepristone, Cannabidiol, 9 cis retinoic acid, Tamoxifen, Standard therapy. Conditions recorded: Breast Cancer Female.

Linked to the drug Alitretinoin because the registry names it among its interventions and Breast cancer among its conditions. Registry record only: no result has been read by an editor.

## Fields

- Kind: Trial
- Last checked: 2026-09-22
- Tags: pipeline; ctgov-ingest
- Registry id: NCT05016349
- Phase: 3
- Setting: Why Antiprogestrone (Mifepristone) and Cyp 26 Inhibitor Must be Combined With Tamoxifen or ( Tamoxifen and Retinoic Acid) for Treating Early Breast Cancer
- Sponsor: Mahmoud Ramadan mohamed Elkazzaz
- Enrolled: 160

## Sources

- ClinicalTrials.gov NCT05016349: https://clinicaltrials.gov/study/NCT05016349

## Connected records

- cancers: [Breast cancer (all types)](https://onco.cc/cancers/breast-cancer/)
- drugs: [Alitretinoin](https://onco.cc/drugs/alitretinoin/), [Mifepristone](https://onco.cc/drugs/mifepristone/), [Tamoxifen](https://onco.cc/drugs/tamoxifen/), [Tretinoin (all-trans retinoic acid, ATRA)](https://onco.cc/drugs/tretinoin-atra/)

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