Two Powerful Tests for Parent-of-Origin Effects at Quantitative Trait Loci on the X Chromosome
| Autor: | Ji-Yuan Zhou, Wing K. Fung, Pui Yin Lau, Kar Fu Yeung |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Chromosomes
Human X Autosome Quantitative Trait Loci Turner Syndrome Expression (computer science) Quantitative trait locus Data set Evolutionary biology Databases Genetic Genetics Linear Models Humans Computer Simulation Nuclear family Genetics (clinical) X chromosome Mathematics Type I and type II errors |
| Zdroj: | Human heredity. 83(5) |
| ISSN: | 1423-0062 |
| Popis: | Parent-of-origin effects, which describe an occurrence where the expression of a gene depends on its parental origin, are an important phenomenon in epigenetics. Statistical methods for detecting parent-of-origin effects on autosomes have been investigated for 20 years, but the development of statistical methods for detecting parent-of-origin effects on the X chromosome is relatively new. In the literature, a class of Q-XPAT-type tests are the only tests for the parent-of-origin effects for quantitative traits on the X chromosome. In this paper, we propose two simple and powerful classes of tests to detect parent-of-origin effects for quantitative trait values on the X chromosome. The proposed tests can accommodate complete and incomplete nuclear families with any number of daughters. The simulation study shows that our proposed tests produce empirical type I error rates that are close to their respective nominal levels, as well as powers that are larger than those of the Q-XPAT-type tests. The proposed tests are applied to a real data set on Turner’s syndrome, and the proposed tests give a more significant finding than the Q-C-XPAT test. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|