|Grant Number:||5R01CA151947-03 Interpret this number|
|Primary Investigator:||Qin, Li-Xuan|
|Organization:||Sloan-Kettering Inst Can Research|
|Project Title:||Statistical Methods for Normalizing Microarrays in Cancer Biomarker Studies|
DESCRIPTION (provided by applicant): Various array normalization methods have been developed for gene expression microarrays. Most of these methods assume few or symmetric differential expression between sample groups. There has been no systematic study of the properties of these methods in normalizing microRNA expression arrays utilizing heterogeneous samples such as tumors. MicroRNA arrays contain only a few hundred microRNAs, and are likely to have a relatively large proportion being differentially expressed between diverse tumor groups. The assessment of normalization methods in this setting is difficult because of the lack of a benchmark dataset that has no confounding array effects. We propose to design and generate such benchmark datasets, perform a systematic assessment of normalization methods with a particular emphasis on the utility of these models for detecting markers with differential expression, and from the benchmark data design derive statistical models that acknowledge heterogeneities inherent to tumor samples.
An Empirical Evaluation Of Normalization Methods For Microrna Arrays In A Liposarcoma Study
Authors: Qin L.X. , Tuschl T. , Singer S. .
Source: Cancer Informatics, 2013; 12, p. 83-101.
Finding Gene Clusters For A Replicated Time Course Study
Authors: Qin L.X. , Breeden L. , Self S.G. .
Source: Bmc Research Notes, 2014; 7, p. 60.
Blocking And Randomization To Improve Molecular Biomarker Discovery
Authors: Qin L.X. , Zhou Q. , Bogomolniy F. , Villafania L. , Olvera N. , Cavatore M. , Satagopan J.M. , Begg C.B. , Levine D.A. .
Source: Clinical Cancer Research : An Official Journal Of The American Association For Cancer Research, 2014-07-01 00:00:00.0; 20(13), p. 3371-8.
Microrna Array Normalization: An Evaluation Using A Randomized Dataset As The Benchmark
Authors: Qin L.X. , Zhou Q. .
Source: Plos One, 2014; 9(6), p. e98879.
Molecular Subtypes Of Uterine Leiomyosarcoma And Correlation With Clinical Outcome
Authors: Barlin J.N. , Zhou Q.C. , Leitao M.M. , Bisogna M. , Olvera N. , Shih K.K. , Jacobsen A. , Schultz N. , Tap W.D. , Hensley M.L. , et al. .
Source: Neoplasia (new York, N.y.), 2015 Feb; 17(2), p. 183-9.