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Clinical Trial Summary

Triple negative breast cancer (TNBC) represents about 15% of breast cancers and is characterized by the lack of expression of estrogen receptor (ER), progesterone receptor (PR), and HER-2 non-amplification. Women with TNBC tend to be younger, African American, and BRCA-1 germline carriers. The hallmark of this subtype is early metastatic recurrences with a peak frequency 1-2 years. Prognosis for metastatic TNBC is especially poor with median survival of about 1 year as compared to about 2-4 years with other types of metastatic breast cancer. The primary objective of the phase I part of this study is to determine the safety, tolerability and maximum tolerated dose of leflunomide in women with previously treated TNBC (or ER+ , HER2-neg MBC in Phase I). The primary objective of the phase 2 part of this study is to determine the efficacy of leflunomide in patients with TNBC. Leflunomide, which will be taken daily by mouth, is an inhibitor of dihydroorotate dehydrogenase (DHODH). This proposal will test if DHODH is a novel target for a particular subset of women with metastatic TNBC.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT03709446
Study type Interventional
Source Icahn School of Medicine at Mount Sinai
Contact Rita Vaccaro, RN
Phone 212-659-5549
Email rita.vaccaro@mssm.edu
Status Recruiting
Phase Phase 1/Phase 2
Start date April 16, 2019
Completion date October 2026

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