Chloroquine as an Anti-Autophagy Drug in Small Cell Lung Cancer (SCLC) Patients
Chloroquine might very well be able to increase overall survival in small cell lung cancer by sensitizing cells resistant to chemotherapy and radiotherapy.
Tumor hypoxia is a well-known factor negatively influencing outcome in many solid tumors, including small cell lung cancer. Hypoxic cells are more radio-resistant, more chemo-resistant and more prone to develop distant metastases than normoxic cells.
One of the mechanisms responsible for survival of these therapy-resistant hypoxic cells is (macro-)autophagy: a phenomenon in which cells provide themselves with energy (ATP) by digesting their own cell-organelles. Chloroquine is a potent blocker of autophagy and has been demonstrated in a lab setting to dramatically enhance tumor response to radiotherapy, chemotherapy and even anti-hormonal therapy.
Thus, chloroquine might very well be able to increase overall survival in small cell lung cancer by sensitizing cells resistant to chemotherapy and radiotherapy.
Allocation: Randomized, Control: Uncontrolled, Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Small Cell Lung Cancer
Chloroquine, A-CQ 100
VU Medical Center
Not yet recruiting
Maastricht Radiation Oncology
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT00969306
- Information obtained from ClinicalTrials.gov on July 15, 2010
Medical and Biotech [MESH] Definitions
Malignant neoplasm arising from the epithelium of the BRONCHI. It represents a large group of epithelial lung malignancies which can be divided into two clinical groups: SMALL CELL LUNG CANCER and NON-SMALL-CELL LUNG CARCINOMA.
Small Cell Lung Carcinoma
A form of highly malignant lung cancer that is composed of small ovoid cells (SMALL CELL CARCINOMA).
Carcinoma, Non-small-cell Lung
A heterogeneous aggregate of at least three distinct histological types of lung cancer, including SQUAMOUS CELL CARCINOMA; ADENOCARCINOMA; and LARGE CELL CARCINOMA. They are dealt with collectively because of their shared treatment strategy.
Tumor Suppressor Protein P53
Nuclear phosphoprotein encoded by the p53 gene (GENES, P53) whose normal function is to control CELL PROLIFERATION and APOPTOSIS. A mutant or absent p53 protein has been found in LEUKEMIA; OSTEOSARCOMA; LUNG CANCER; and COLORECTAL CANCER.
Tumors or cancer of the LUNG.
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