Biological Specimen Collection for Laboratory Methods Development and Training Purposes
|First Received Date ICMJE||October 26, 2001|
|Last Updated Date||March 3, 2008|
|Start Date ICMJE||October 2001|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE||Not Provided|
|Original Primary Outcome Measures ICMJE||Not Provided|
|Change History||Complete list of historical versions of study NCT00025831 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE||Not Provided|
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Biological Specimen Collection for Laboratory Methods Development and Training Purposes|
|Official Title ICMJE||Biological Specimen Collection for Laboratory Methods Development and for Training Purposes|
This study will collect biological samples-buccal cells, blood sample, skin sample-to be used in developing and testing laboratory methods for measuring and analyzing genes. Such methods can be used for research on identifying genetic factors that may affect a person's cancer risk.
All individuals age 21 and older may participate in this study. Participants will provide one or more of the following samples:
Most participants will be asked to provide only a buccal sample; blood and/or skin samples will be requested from a few participants. The blood and skin samples may be used to grow cell lines; that is, to make them grow indefinitely for research uses.
We propose two related activities that involve the collection of biological samples. The first involves the collection of mouthwash samples from 200 volunteers, to assess the feasibility of pooling samples for quantitative genotype determinations. For a small number of volunteers, we will also collect a peripheral blood sample and a skin punch biopsy for establishment of lymphoblastoid and fibroblast cell lines. The blood and skin samples will be used to compare the amount and subcellular localization of DNA repair proteins between lymphocytes (cells most commonly collected in epidemiologic studies) and fibroblasts (the cell types commonly used in assay development). In addition, we will conduct hands-on education and training sessions in molecular genetics for members of DCEG and others. The hands-on education sessions will be aimed at non-laboratory scientists and involve 6-9 hours of demonstration and participation in basic molecular genetics techniques. Participants will have the option of collecting their own mouthwash sample, extracting the DNA, and performing a genotyping assay on their sample in the Laboratory of Population Genetics in Building 41. After the education session, the biological samples will be reassigned arbitrary numbers not linked to personally identifying information and will be used for laboratory methods development only.
|Study Type ICMJE||Observational|
|Study Design ICMJE||Not Provided|
|Target Follow-Up Duration||Not Provided|
|Sampling Method||Not Provided|
|Study Population||Not Provided|
|Intervention ICMJE||Not Provided|
|Study Group/Cohort (s)||Not Provided|
|Publications *||Buetow KH, Edmonson M, MacDonald R, Clifford R, Yip P, Kelley J, Little DP, Strausberg R, Koester H, Cantor CR, Braun A. High-throughput development and characterization of a genomewide collection of gene-based single nucleotide polymorphism markers by chip-based matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Proc Natl Acad Sci U S A. 2001 Jan 16;98(2):581-4. Epub 2001 Jan 2.|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Completion Date||September 2005|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
All individuals age 21 and older will be eligible.
Participants who have volunteered for previous DCEG studies within the past three years in which buccal or blood samples were collected will be excluded because the samples collected in the current study may be combined with some previously collected samples and duplication of subjects is to be avoided.
Individuals with known active oral disease will be excluded from the buccal cell collection component, and those known to form keloids will be excluded from the skin biopsy component.
|Ages||21 Years and older|
|Accepts Healthy Volunteers||Yes|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries ICMJE||United States|
|Removed Location Countries|
|NCT Number ICMJE||NCT00025831|
|Other Study ID Numbers ICMJE||020017, 02-C-0017|
|Has Data Monitoring Committee||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||National Cancer Institute (NCI)|
|Collaborators ICMJE||Not Provided|
|Investigators ICMJE||Not Provided|
|Information Provided By||National Institutes of Health Clinical Center (CC)|
|Verification Date||September 2005|
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