Ritonavir and Its Effects on Biomarkers in Women Undergoing Surgery for Newly Diagnosed Breast Cancer

2014-08-27 03:18:08 | BioPortfolio


RATIONALE: Ritonavir may stop the growth of tumor cells by blocking some of the enzymes needed for cancer cell growth. Studying samples of blood and tissue from patients with breast cancer in the laboratory may help doctors learn more about the effects of ritonavir on biomarkers involved in breast cancer growth.

PURPOSE: This phase I/II trial is studying the best dose of ritonavir and its effects on biomarkers in women undergoing surgery for newly diagnosed breast cancer.



- Determine the effects of ritonavir on Akt activity, UPR, Ki67 LI, and ROS in a triple-negative breast cancer model.

- Determine the maximum tolerated dose of ritonavir in women with newly diagnosed breast cancer. (Phase I)

OUTLINE: This is a multicenter, phase I dose-escalation study followed by a phase II study. Five patients with triple-negative breast cancer are enrolled into the control group before the start of phase I recruitment.

- Control: Patients do not receive ritonavir.

- Phases I and II: Patients receive oral ritonavir twice daily for 10 days in the absence of disease progression or unacceptable toxicity. Patients then undergo surgery as deemed appropriate by the surgeon and based on patient preference (mastectomy or lumpectomy with sentinel node procedure and/or axillary node dissection).

All patients undergo blood and tissue sample collection periodically for biomarker research studies. Samples from patients enrolled in the control group are compared with the samples from patients enrolled in phase I and II.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic


Breast Cancer


ritonavir, therapeutic conventional surgery


Masonic Cancer Center, University of Minnesota
United States




Masonic Cancer Center, University of Minnesota

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:18:08-0400

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Medical and Biotech [MESH] Definitions

Abnormal accumulation of lymph in the arm, shoulder and breast area associated with surgical or radiation breast cancer treatments (e.g., MASTECTOMY).

Metastatic breast cancer characterized by EDEMA and ERYTHEMA of the affected breast due to LYMPHATIC METASTASIS and eventual obstruction of LYMPHATIC VESSELS by the cancer cells.

Therapeutic practices which are not currently considered an integral part of conventional allopathic medical practice. They may lack biomedical explanations but as they become better researched some (PHYSICAL THERAPY MODALITIES; DIET; ACUPUNCTURE) become widely accepted whereas others (humors, radium therapy) quietly fade away, yet are important historical footnotes. Therapies are termed as Complementary when used in addition to conventional treatments and as Alternative when used instead of conventional treatment.

A infiltrating (invasive) breast cancer, relatively uncommon, accounting for only 5%-10% of breast tumors in most series. It is often an area of ill-defined thickening in the breast, in contrast to the dominant lump characteristic of ductal carcinoma. It is typically composed of small cells in a linear arrangement with a tendency to grow around ducts and lobules. There is likelihood of axillary nodal involvement with metastasis to meningeal and serosal surfaces. (DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1205)

A deoxycytidine derivative and fluorouracil PRODRUG that is used as an ANTINEOPLASTIC ANTIMETABOLITE in the treatment of COLON CANCER; BREAST CANCER and GASTRIC CANCER.

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