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RATIONALE: Studying samples of tumor tissue and blood from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. It may also help doctors predict how patients will respond to treatment.
PURPOSE: This research study is looking at tissue and blood samples from patients with low-grade glioma.
- Evaluate the diagnostic and prognostic relevance of alterations of specific chromosomes and chromosomal regions including 7, 9p, 10p, 10q, 13q, 17p, 17q, 19q, 22q, X, and Y, using PCR analysis of microsatellite repeats and FISH.
- Evaluate the diagnostic and prognostic relevance of DNA ploidy by flow cytometric analysis; compare with ploidy determination by FISH.
- Assess the diagnostic and prognostic relevance of various markers of cellular proliferation and cellular function including flow cytometric determination of %S-phase, %G2M, and immunohistochemical evaluation of PCNA, Ki-67, and p53.
OUTLINE: Previously preserved paraffin-embedded tissue blocks are obtained and used for biomarker studies. Blood samples obtained during treatment are also obtained. Loss of heterozygosity of specific chromosomal regions are performed using PCR analysis of microsatellite repeats (41,118-120) on DNA extracted from the paraffin-embedded archival specimens. FISH and flow cytometry may also be used to assess chromosomal loss of deletion. Immunohistochemistry is also performed.
Brain and Central Nervous System Tumors
fluorescence in situ hybridization, loss of heterozygosity analysis, polymerase chain reaction, flow cytometry, immunohistochemistry staining method
Mayo Clinic Scottsdale
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:18:20-0400
RATIONALE: Studying samples of tissue from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. It ...
RATIONALE: Diagnostic imaging procedures, such as fludeoxyglucose F 18 PET, may be effective in detecting cancer or recurrence of cancer, or premalignant polyps. PURPOSE: This clinical tr...
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RATIONALE: Exposure to formaldehyde in the work place may affect the risk of developing cancer later in life. Learning about the long-term effects of formaldehyde exposure may help the stu...
RATIONALE: Drugs used in chemotherapy, such as cisplatin and temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from di...
Accurate distinction of benign mesothelial proliferations from malignant mesothelioma remains a diagnostic challenge. Sequential use of BAP1 immunohistochemistry and CDKN2A fluorescence in situ hybrid...
Chromosome 3p deletion is a well-established genetic aberration in clear cell renal cell carcinoma (RCC). We aimed to evaluate the clinical utility of 3p fluorescence in situ hybridization (FISH) on f...
We present a novel method for real-time monitoring and kinetic analysis of fluorescence in situ hybridization (FISH). We implement the method using a vertical microfluidic probe containing a microstru...
Immunohistochemistry and Periodic acid-Schiff (PAS) staining have been routinely used for the diagnosis of Whipple's disease (WD). However, these methods present limitations. As a result, the last yea...
Chromosome (G-banding) and fluorescence in situ hybridization (FISH) serve as the primary methodologies utilized for detecting genetic aberrations in hematologic neoplasms. Chromosomal microarray can ...
A type of IN SITU HYBRIDIZATION in which target sequences are stained with fluorescent dye so their location and size can be determined using fluorescence microscopy. This staining is sufficiently distinct that the hybridization signal can be seen both in metaphase spreads and in interphase nuclei.
The simultaneous identification of all chromosomes from a cell by fluorescence in situ hybridization (IN SITU HYBRIDIZATION, FLUORESCENCE) with chromosome-specific florescent probes that are discerned by their different emission spectra.
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.
A technique that labels specific sequences in whole chromosomes by in situ DNA chain elongation or PCR (polymerase chain reaction).
A heat stable DNA-DIRECTED DNA POLYMERASE from the bacteria Thermus aquaticus. It is widely used for the amplification of genes through the process of POLYMERASE CHAIN REACTION. EC 2.7.7.-.
Bladder Cancer Brain Cancer Breast Cancer Cancer Cervical Cancer Colorectal Head & Neck Cancers Hodgkin Lymphoma Leukemia Lung Cancer Melanoma Myeloma Ovarian Cancer Pancreatic Cancer ...
DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule. During DNA sequencing, the bases of a small fragment of DNA are sequentially identified from signals emitted as each fragment is re-synthesized from a ...
Cancer is not just one disease but many diseases. There are more than 100 different types of cancer. Most cancers are named for the organ or type of cell in which they start - for example, cancer that begins in the colon is called colon cancer; cancer th...