Torben A. Kruse

A Combinatory Approach for Selecting Prognostic Genes in Microarray Studies of Tumour Survivals (2009)

Qihua Tan, Mads Thomassen, Kirsten M. Jochumsen, Ole Mogensen, Kaare Christensen, Torben A. Kruse

Different from significant gene expression analysis which looks for genes that are differentially regulated, feature selection in the microarray-based prognostic gene expression analysis aims at...

A Combinatory Approach for Selecting Prognostic Genes in Microarray Studies of Tumour Survivals (2009)

Qihua Tan, Mads Thomassen, Kirsten M. Jochumsen, Ole Mogensen, Kaare Christensen, Torben A. Kruse

Different from significant gene expression analysis which looks for genes that are differentially regulated, feature selection in the microarray-based prognostic gene expression analysis aims at...

Gene expression meta-analysis identifies metastatic pathways and transcription factors in breast cancer (2008)

Thomassen, Mads, Tan, Qihua, Kruse, Torben A

Abstract Background Metastasis is believed to progress in several steps including different pathways but the determination and understanding of these mechanisms is still fragmentary. Microarray...

Feature Selection for Predicting Tumor Metastases in Microarray Experiments using Paired Design (2008)

Qihua Tan, Mads Thomassen, Torben A. Kruse

Abstract: Among the major issues in gene expression profi le classifi cation, feature selection is an important and necessary step in achieving and creating good classifi cation rules given the high...

Feature ranking and feature redundancy reduction for prognostic microarray study of tumor clinical outcomes (2008)

Tan, Qihua, Thomassen, Mads, Christensen, Kaare, Kruse, Torben A.

Different from significant gene expression analysis which looks for all genes that are differentially regulated, feature selection in prognostic gene expression analysis aims at finding a subset of...

Feature ranking and feature redundancy reduction for prognostic microarray study of tumor clinical outcomes (2008)

Tan, Qihua, Thomassen, Mads, Christensen, Kaare, Kruse, Torben A.

Different from significant gene expression analysis which looks for all genes that are differentially regulated, feature selection in prognostic gene expression analysis aims at finding a subset of...

Retrospective analysis of main and interaction effects in genetic association studies of human complex traits (2007)

Tan, Qihua, Christiansen, Lene, Brasch-Andersen, Charlotte, Zhao, Jing, Li, Shuxia, Kruse, Torben A, ...

Abstract Background The etiology of multifactorial human diseases involves complex interactions between numerous environmental factors and alleles of many genes. Efficient statistical tools are...

Feature Selection for Predicting Tumor Metastases in Microarray Experiments using Paired Design (2007)

Qihua Tan, Mads Thomassen, Torben A. Kruse

Among the major issues in gene expression profile classification, feature selection is an important and necessary step in achieving and creating good classification rules given the high...

Feature Selection for Predicting Tumor Metastases in Microarray Experiments using Paired Design (2007)

Qihua Tan, Mads Thomassen, Torben A. Kruse

Among the major issues in gene expression profile classification, feature selection is an important and necessary step in achieving and creating good classification rules given the high...

A non-parametric approach for identifying differentially expressed genes in factorial microarray experiments (2005)

Tan, Qihua, Dahlgaard, Jesper, Vach, Werner, Abdallah, Basem M, Kassem, Moustapha, Kruse, Torben A

Abstract We introduce a non-parametric approach using bootstrap-assisted correspondence analysis to identify and validate genes that are differentially expressed in factorial microarray experiments....

Estimating haplotype relative risks on human survival in population-based association studies (2005)

Tan, Qihua, Christiansen, Lene, Bathum, Lise, Zhao, Jing H., Yashin, Anatoli I., Vaupel, James W., ...

Association-based linkage disequilibrium (LD) mapping is an increasingly important tool for localizing genes that show potential influence on human aging and longevity. As haplotypes contain more LD...

Haplotype effects on human survival: logistic regression models applied to unphased genotype data (2005)

Tan, Qihua, Christiansen, Lene, Bathum, Lise, Zhao, Jing H., Vach, Werner, Vaupel, James W., ...

Haplotype based linkage disequilibrium (LD) mapping exhibits higher power than the single locus approach because it makes use of the LD information contained in the flanking markers. New statistical...

Power of non-parametric linkage analysis in mapping genes contributing to human longevity in long-lived sib-pairs (2004)

Tan, Qihua, Zhao, Jing H., Iachine, Ivan A., Hjelmborg, Jacob, Vach, Werner, Vaupel, James W., ...

This report investigates the power issue in applying the non-parametric linkage analysis of affected sib-pairs (ASP) [Kruglyak and Lander, 1995: Am J Hum Genet 57:439-454] to localize genes that...

Multidisciplinary approaches in genetic studies of human aging and longevity (2004)

Tan, Qihua, Yashin, Anatoli I., Christensen, Kaare, Jeune, Bernard, De Benedictis, Giovanna, Kruse, Torben A., ...

The amount of research on human aging and longevity has been growing rapidly in recent years. Multidisciplinary approaches, which integrate classic population genetics methods with the principles of...

Assessing genetic association with human survival at multi-allelic loci (2004)

Tan, Qihua, De Benedictis, Giovanna, Yashin, Anatoli I., Bathum, Lise, Christiansen, Lene, Dahlgaard, Jesper, ...

Genetic variation plays an important role in natural selection and population evolution. However, it also presents geneticists interested in aging research with problems in data analysis because of...

Logistic regression models for polymorphic and antagonistic pleiotropic gene action on human aging and longevity (2003)

Tan, Qihua, Bathum, Lise, Christiansen, Lene, De Benedictis, Giovanna, Dahlgaard, Jesper, Frizner, N, ...

In this paper, we apply logistic regression models to measure genetic association with human survival for highly polymorphic and pleiotropic genes. By modelling genotype frequency as a function of...

α-cardiac actin is a novel disease gene in familial hypertrophic cardiomyopathy

Mogensen, Jens, Klausen, Ib C., Pedersen, Anders K., Egeblad, Henrik, Bross, Peter, Kruse, Torben A., ...

We identified the α-cardiac actin gene (ACTC) as a novel disease gene in a pedigree suffering from familial hypertrophic cardiomyopathy (FHC). Linkage analyses excluded all the previously reported...

Genetic Association Analysis of Human Longevity in Cohort Studies of Elderly Subjects: An Example of the PON1 Gene in the Danish 1905 Birth Cohort

Tan, Qihua, Christiansen, Lene, Bathum, Lise, Li, Shuxia, Kruse, Torben A., Christensen, Kaare

Although the case-control or the cross-sectional design has been popular in genetic association studies of human longevity, such a design is prone to false positive results due to sampling bias and a...

α-cardiac actin is a novel disease gene in familial hypertrophic cardiomyopathy

Mogensen, Jens, Klausen, Ib C., Pedersen, Anders K., Egeblad, Henrik, Bross, Peter, Kruse, Torben A., ...

We identified the α-cardiac actin gene (ACTC) as a novel disease gene in a pedigree suffering from familial hypertrophic cardiomyopathy (FHC). Linkage analyses excluded all the previously reported...

Genome Scan Meta-Analysis of Schizophrenia and Bipolar Disorder, Part III: Bipolar Disorder

Segurado, Ricardo, Detera-Wadleigh, Sevilla D., Levinson, Douglas F., Lewis, Cathryn M., Gill, Michael, ...

Genome scans of bipolar disorder (BPD) have not produced consistent evidence for linkage. The rank-based genome scan meta-analysis (GSMA) method was applied to 18 BPD genome scan data sets in an...

Genetic Association Analysis of Human Longevity in Cohort Studies of Elderly Subjects: An Example of the PON1 Gene in the Danish 1905 Birth Cohort

Tan, Qihua, Christiansen, Lene, Bathum, Lise, Li, Shuxia, Kruse, Torben A., Christensen, Kaare

Although the case-control or the cross-sectional design has been popular in genetic association studies of human longevity, such a design is prone to false positive results due to sampling bias and a...

Pioglitazone Enhances Mitochondrial Biogenesis and Ribosomal Protein Biosynthesis in Skeletal Muscle in Polycystic Ovary Syndrome

Skov, Vibe, Glintborg, Dorte, Knudsen, Steen, Tan, Qihua, Jensen, Thomas, Kruse, Torben A., ...

Insulin resistance is a common metabolic abnormality in women with PCOS and leads to an elevated risk of type 2 diabetes. Studies have shown that thiazolidinediones (TZDs) improve metabolic...

Feature Selection for Predicting Tumor Metastases in Microarray Experiments using Paired Design

Tan, Qihua, Thomassen, Mads, Kruse, Torben A.

Among the major issues in gene expression profile classification, feature selection is an important and necessary step in achieving and creating good classification rules given the high...

Power for Genetic Association Study of Human Longevity Using the Case-Control Design

Tan, Qihua, Zhao, Jing Hua, Zhang, Dongfeng, Kruse, Torben A., Christensen, Kaare

The efficiency of the popular case-control design in gene-longevity association studies needs to be verified because, different from a binary trait, longevity represents only the extreme end of the...