Study of LDE225 (Sonidegib) in Combination With Docetaxel in Triple Negative (TN) Advanced Breast Cancer (ABC) Patients

Summary

This is a single-arm, open-label, phase Ib study. In this trial, patients with Triple Negative (TN) Advanced Breast Cancer (ABC) will be treated with increasing doses of LDE225 (sonidegib) and docetaxel to determine the Maximum Tolerated Dose (MTD), Dose Limiting Toxicity (DLT) and Recommended Phase II Dose (RP2D) of the combination. Eligible patients with hormonal receptors negative and Human Epidermal Growth Factor Receptor 2 (HER2) negative ABC will be included and treated with docetaxel intravenously in every three weeks cycles. LDE225 will be administered orally at three dose levels 400, 600 and 800mg one a day (QD) (a -1 dose level is included just in case dose de-escalation is needed). Treatment will be repeated on day 1 of a 21-day cycle until radiographic or symptomatic progression, unacceptable toxicity or withdraws informed consent. The investigators propose to develop a phase Ib trial with the combination of docetaxel with LDE225 in TN ABC patients to define the safety, tolerability and RP2D, as well as to have some information about the efficacy of the combination.

Timeline

Start

2014-05

Primary completion

2016-04

Completion

2016-04

Publications

• Results Ruiz-Borrego M, Jimenez B, Antolin S, Garcia-Saenz JA, Corral J, Jerez Y, Trigo J, Urruticoechea A, Colom H, Gonzalo N, Munoz C, Benito S, Caballero R, Bezares S, Carrasco E, Rojo F, Martin M. A phase Ib study of sonidegib (LDE225), an oral small molecule inhibitor of smoothened or Hedgehog pathway, in combination with docetaxel in triple negative advanced breast cancer patients: GEICAM/2012-12 (EDALINE) study. Invest New Drugs. 2019 Feb;37(1):98-108. doi: 10.1007/s10637-018-0614-9. Epub 2018 Jun 9.
• Results Cazet AS, Hui MN, Elsworth BL, Wu SZ, Roden D, Chan CL, Skhinas JN, Collot R, Yang J, Harvey K, Johan MZ, Cooper C, Nair R, Herrmann D, McFarland A, Deng N, Ruiz-Borrego M, Rojo F, Trigo JM, Bezares S, Caballero R, Lim E, Timpson P, O'Toole S, Watkins DN, Cox TR, Samuel MS, Martin M, Swarbrick A. Targeting stromal remodeling and cancer stem cell plasticity overcomes chemoresistance in triple negative breast cancer. Nat Commun. 2018 Jul 24;9(1):2897. doi: 10.1038/s41467-018-05220-6.

Drugs

Indications