Comparison of Univariate and Multivariate Gene Set Analysis in Acute Lymphoblastic Leukemia

Soheila, Khodakarim; Hamid, AlaviMajd; Farid, Zayeri; Mostafa, Rezaei-Tavirani; Nasrin, Dehghan-Nayeri; Syyed-Mohammad, Tabatabaee; Vahide, Tajalli

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저자정보: Soheila, Khodakarim (Department of Epidemiology, Faculty of Public Health, Shahid Beheshti University of Medical Sciences) Hamid, AlaviMajd (Department of Biowtatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences) Farid, Zayeri (Department of Biowtatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences) Mostafa, Rezaei-Tavirani (Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran University) Nasrin, Dehghan-Nayeri (Department of Proteomics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences) Syyed-Mohammad, Tabatabaee (Department of Medical Informatics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences) Vahide, Tajalli (Department of Linguistics, Faculty of Literature and Human Sciences, Tehran University)

저널정보: 아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제14권 제3호

발행연도: 2013.1

수록면: 1,629 - 1,633 (5page)

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Background: Gene set analysis (GSA) incorporates biological with statistical knowledge to identify gene sets which are differentially expressed that between two or more phenotypes. Materials and Methods: In this paper gene sets differentially expressed between acute lymphoblastic leukaemia (ALL) with BCR-ABL and those with no observed cytogenetic abnormalities were determined by GSA methods. The BCR-ABL is an abnormal gene found in some people with ALL. Results: The results of two GSAs showed that the Category test identified 30 gene sets differentially expressed between two phenotypes, while the Hotelling's $T^2$ could discover just 19 gene sets. On the other hand, assessment of common genes among significant gene sets showed that there were high agreement between the results of GSA and the findings of biologists. In addition, the performance of these methods was compared by simulated and ALL data. Conclusions: The results on simulated data indicated decrease in the type I error rate and increase the power in multivariate (Hotelling's $T^2$) test as increasing the correlation between gene pairs in contrast to the univariate (Category) test.

#Acute lymphoblastic leukemia #microarray #gene set analysis #category #Hotelling's $T^2$

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Soheila, Khodakarim

소속기관 Department of Epidemiology, Faculty of Public Health, Shahid Beheshti University of Medical Sciences