Associations between Catalase Phenotype and Genotype: Modification by Epidemiologic Factors

Replicating genotype–phenotype associations

NCI-NHGRI Working Group on Replication in Association Studies The study of human genetics has recently undergone a dramatic transition with the com­ pletion of both the sequencing of the human genome and the mapping of human haplo­ types of the most common form of genetic variation, the single nucleotide polymorphism (SNP). In concert with this rapid expansion of detailed genomic information, c...

Finding Genotype and Phenotype Associations

Genotype-phenotype associations: modulation by diet and obesity.

Changes in diet are likely to reduce chronic disorders, but after decades of active research and heated discussion, the question still remains: what is the optimal diet to achieve this elusive goal? Is it a low-fat diet, as traditionally recommended by multiple medical societies? Or a high monounsaturated fat (MUFA) diet as predicated by the Mediterranean diet? Perhaps a high polyunsaturated fa...

Associations between breast cancer risk and the catalase genotype, fruit and vegetable consumption, and supplement use.

Observed weak or null associations between fruit and vegetable intake and breast cancer risk could be due to heterogeneity in endogenous antioxidant capabilities. The authors evaluated potential relations between a functional polymorphism in catalase, an antioxidant enzyme, and breast cancer risk, particularly in relation to fruit and vegetable intake and supplement use. Women (1,008 cases and ...

Genotype–phenotype associations: substitution models to detect evolutionary associations between phenotypic variables and genotypic evolutionary rate

MOTIVATION Mapping between genotype and phenotype is one of the primary goals of evolutionary genetics but one that has received little attention at the interspecies level. Recent developments in phylogenetics and statistical modelling have typically been used to examine molecular and phenotypic evolution separately. We have used this background to develop phylogenetic substitution models to te...