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RATIONALE: Studying samples of blood, tumor tissue, and skin in the laboratory from patients with melanoma receiving hydroxychloroquine may help doctors understand the effect of hydroxychloroquine on biomarkers.
PURPOSE: This early phase I trial is studying hydroxychloroquine in patients with stage III or stage IV melanoma that can be removed by surgery.
- To characterize the effects of hydroxychloroquine (HCQ) on the modulation of markers of autophagy, as measured by p62, Beclin1, LC3, and GRp170 expression, in pre- and post-treatment tumor biopsy samples, skin samples, and peripheral blood mononuclear cell samples from patients with stage III or IV melanoma undergoing palliative or curative surgery.
- To determine whether the steady-state plasma concentration of HCQ correlates with observed trends in induced markers of autophagy.
- To determine the potential mechanisms of antitumor effect of HCQ, as measured by a reduction in tumor cell proliferation (Ki-67 and mitotic rate) or an increase in apoptosis (activated caspase-3 and TUNEL assays) in melanoma specimens.
OUTLINE: Patients receive oral hydroxychloroquine twice daily for 14 days in the absence of disease progression or unacceptable toxicity. Patients then undergo surgery.
Blood, tumor tissue, and skin samples are collected for pharmacokinetic and correlative laboratory studies. Expression of p62, Beclin1, LC3, and GRp170 (autophagy markers) is analyzed.
Masking: Open Label, Primary Purpose: Treatment
hydroxychloroquine, gene expression analysis, laboratory biomarker analysis, pharmacological study
Not yet recruiting
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:19:52-0400
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Despite the potential usefulness, the association analysis of gene expression with interval times of two events has been hampered because the occurrence of events can be censored and the conventional ...
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MOLECULAR BIOLOGY techniques used in the diagnosis of disease. Included are such techniques as IN SITU HYBRIDIZATION of chromosomes for CYTOGENETIC ANALYSIS; OLIGONUCLEOTIDE ARRAY SEQUENCE ANALYSIS of gene expression patterns in disease states; identification of pathogenic organisms by analysis of species specific DNA sequences; and detection of mutations with POLYMERASE CHAIN REACTION.
Body of knowledge related to the use of organisms, cells or cell-derived constituents for the purpose of developing products which are technically, scientifically and clinically useful. Alteration of biologic function at the molecular level (i.e., GENETIC ENGINEERING) is a central focus; laboratory methods used include TRANSFECTION and CLONING technologies, sequence and structure analysis algorithms, computer databases, and gene and protein structure function analysis and prediction.
A method of chemical analysis based on the detection of characteristic radionuclides following a nuclear bombardment. It is also known as radioactivity analysis. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A chemotherapeutic agent that acts against erythrocytic forms of malarial parasites. Hydroxychloroquine appears to concentrate in food vacuoles of affected protozoa. It inhibits plasmodial heme polymerase. (From Gilman et al., Goodman and Gilman's The Pharmacological Basis of Therapeutics, 9th ed, p970)
Hybridization of a nucleic acid sample to a very large set of oligonucleotide probes, which are attached to a solid support, to determine sequence or to detect variations in a gene sequence or expression or for gene mapping.
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In a clinical trial or interventional study, participants receive specific interventions according to the research plan or protocol created by the investigators. These interventions may be medical products, such as drugs or devices; procedures; or change...