potato virus y (pvy) is one of the most important pathogenic agents that reduce the yield and quality of tobacco (nicotiana tabacum l.). dna-based molecular markers are valuable tools for identifying germplasm in gene banks, assessing kinship ties, and doing marker-assisted selection (mas) for resistance to pests, diseases, and some crop traits of interest. this work presents the results of ass...

conclusions rs9364559 in the lpa gene may contribute to the risk of cad in the han chinese population; haplotypes which contain rs9346816-g were all associated with an increased risk of cad in this study. background mutations in the solute carrier family 22 member 3 (slc22a3), lipoprotein (a)-like 2 (lpal2), and the lipoprotein (a) (lpa) gene cluster, which encodes apolipoprotein (a) [apo (a)] ...

conclusions the obtained results confirm some previous studies regardinga gender specific association of maoa gene with the bipolar disorder. results significant associations were observed regarding maoa-ca (p = 0.016) and maoa-vntr (p = 0.004) polymorphisms in the bipolar females. there was no association between maoa-rflp and bipolar disorder. patients and methods this study is a case-control...

Meta-analysis, a statistical tool for combining results across studies, is becoming popular as a method for resolving discrepancies in genetic association studies. Persistent difficulties in obtaining robust, replicable results in genetic association studies are almost certainly because genetic effects are small, requiring studies with many thousands of subjects to be detected. In this article,...

OBJECTIVE The kernel machine (KM) test reportedly performs well in the set-based association test of rare variants. Many studies have been conducted to measure phenotypes at multiple time points, but the standard KM methodology has only been available for phenotypes at a single time point. In addition, family-based designs have been widely used in genetic association studies; therefore, the dat...

Once upon a time, as all the best children’s stories begin, a lot of clever geneticists began a huge hunt for the “asthma gene.” At first they thought they had found it, but then more andmore of the hunters found different “asthma genes,” and sometimes some gene hunters could not find the gene that previous hunters thoughtwas thekeyone. Life becamemore and more confusing, and the root causes, w...

Publication bias may exist when nonsignificant findings remain unpublished, thereby artificially inflating the apparent magnitude of an effect. This concern is not new, but it is particularly current in relation to genetic association studies. Data from a recent meta-analysis of association studies of personality were used to assess the potential of different graphical and statistical methods f...

The case-control study design is popular for genetic association studies of complex human diseases. However, case-control studies may suffer from bias due to population stratification. In this paper, the authors present simple formulas that can set a limit to the havoc population stratification bias can wreak (the lower and upper bounds of the confounding rate ratio and the upper bound of the t...

The Cochran-Armitage trend test is a standard procedure in genetic association studies. It is a directed test with high power to detect genetic effects that follow the gene-dosage model. In this paper, the author proposes optimal trend tests for genetic association studies of heterogeneous diseases. Monte-Carlo simulations show that the power gain of the optimal trend tests over the conventiona...