Locally Advanced Breast Cancer
Conditions
Keywords
locally advanced breast cancer, hydralazine, magnesium valproate, epigenetic therapy, gene expression
Brief summary
Aberrant DNA methylation and histone deacetylation participate in cancer development and progression, as epigenetic alterations are common to breast cancer, in this phase II study, the demethylating hydralazine plus the HDAC inhibitor magnesium valproate will be added to neoadjuvant doxorubicin and cyclophosphamide in locally advanced breast cancer to assess their safety and biological efficacy.
Detailed description
Eligible patients after signing the informed consent and will undergo study evaluation and then typed for acetylator phenotype before being treated with hydralazine at 182 mg for rapid-, or 83 mg for slow-acetylators, and magnesium valproate at 30 mg/kg, starting from day -7 until chemotherapy ends. Chemotherapy will consists in a regimen of four cycles of doxorubicin 60 mg/m2 and cyclophosphamide 600 mg/m2 every 21 days, followed by surgery to assess the pathological response. Adjuvant radiation and additional treatment will be done in off-protocol basis according to standard institutional policies. Blood samples and core-needle biopsies will be taken from primary breast tumors at diagnosis and at day 8 of treatment with hydralazine and valproate. Global cytosine content (global DNA methylation) and histone deacetylase activity will be assessed in peripheral blood DNA. The transcriptional profile in the primary breast tumor before and after treatment will also be analyzed as well as the plasma levels of hydralazine and valproic acid.
Interventions
DRUGHydralazine and magnesium valproate administration
PROCEDURECore-needle biopsy of the breast
Sponsors
National Council of Science and Technology, Mexico
Psicofarma, S.A. De C.V.
National Institute of Cancerología
Study design
Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
Aged 18 and older; histologically proven invasive T2-3, N0-2, and M0 (stages IIB-IIIA) breast carcinoma; Eastern Cooperative Oncology Group performance status ≤2. Hematological function: Absolute leukocyte count ≥4,000/mm3, platelets ≥100,000/mm3, hemoglobin ≥9.0 g/dL. Hepatic function: total bilirubin, aspartate amino transferase and alanine amino transferase \<1.5 the upper normal limit. Renal function: creatinine ≤1.2 mg/dL or a calculated creatinine clearance of ≥60 mL/min. Written informed consent.
Exclusion criteria
A history of allergy to sulphas, hydralazine, or magnesium valproate. Past or present condition of rheumatic disease, central nervous system disease, heart failure from aortic stenosis and postural hypotension as diagnosed by a physician. Previous use of the experimental drugs. Pregnancy and breast-feeding. Uncontrolled systemic disease or infection.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Global DNA methylation | — |
| Histone Deacetylase Activity | — |
| Global gene expression | — |
Secondary
| Measure | Time frame |
|---|---|
| Pathological response | — |
| Hydralazine plasma levels | — |
| Valproic acid plasma levels | — |
Countries
Mexico
Outcome results
None listed