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Expression Levels of RISC and Microprocessor Complex Components in Epithelial Skin Cancer

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ClinicalTrials.gov Identifier: NCT01345760
Recruitment Status : Completed
First Posted : May 2, 2011
Last Update Posted : October 16, 2012
Information provided by (Responsible Party):

April 29, 2011
May 2, 2011
October 16, 2012
July 2008
February 2011   (Final data collection date for primary outcome measure)
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Complete list of historical versions of study NCT01345760 on ClinicalTrials.gov Archive Site
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Expression Levels of RISC and Microprocessor Complex Components in Epithelial Skin Cancer
Expression Levels of RNA-induced Silencing Complex (RISC) Components TARBP1, TARBP2, Argonaute-1, Argonaute-2, PACT and Microprocessor Complex Component DGCR8 in Epithelial Skin Cancer
MicroRNAs (miRNAs) are very small endogenous RNA molecules about 22-25 nucleotides in length, capable of post-transcriptional gene regulation. miRNAs bind to their target messenger RNAs (mRNAs), leading to cleavage or suppression of target mRNA translation based on the degree of complementarity. miRNAs have recently been shown to play pivotal roles in diverse developmental and cellular processes and linked to a variety of skin diseases and cancers. In the present study, the investigators examines the expression profiles of the microprocessor complex subunit DGCR8 and the RISC components TARBP1, TARBP2, argonaute-1, argonaute-2 and PACT in epithelial skin cancer and its premalignant stage.
Patients with premalignant actinic keratoses, basal cell carcinomas and squamous cell carcinomas were included in the study. Punch biopsies were harvested from the center of the tumors, from sites of healthy skin and a healthy control group. DGCR8, TARBP1, TARBP2, argonaute-1, argonaute-2 and PACT mRNA expression levels were detected by quantitative real-time reverse transcriptase polymerase chain reaction.
Observational Model: Case-Only
Time Perspective: Retrospective
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Retention:   Samples With DNA
human skin
Non-Probability Sample
Patients with epithelial skin cancer and pre-malignant stages
Skin Cancer
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  • Basal Cell Carcinoma
  • Squamous Cell Carcinoma
  • Actinic Keratosis
  • healthy non-lesional skin
Sand M, Skrygan M, Georgas D, Arenz C, Gambichler T, Sand D, Altmeyer P, Bechara FG. Expression levels of the microRNA maturing microprocessor complex component DGCR8 and the RNA-induced silencing complex (RISC) components argonaute-1, argonaute-2, PACT, TARBP1, and TARBP2 in epithelial skin cancer. Mol Carcinog. 2012 Nov;51(11):916-22. doi: 10.1002/mc.20861. Epub 2011 Oct 24.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
February 2011
February 2011   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • epithelial skin cancer

Exclusion Criteria:

  • other known previous malignancies
Sexes Eligible for Study: All
18 Years and older   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
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Michael Sand, Ruhr University of Bochum
Ruhr University of Bochum
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Study Director: Falk G Bechara, PD Dr. Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum
Ruhr University of Bochum
October 2012