Learn R Programming

TRD (version 1.1)

Transmission Ratio Distortion

Description

Transmission Ratio Distortion (TRD) is a genetic phenomenon where the two alleles from either parent are not transmitted to the offspring at the expected 1:1 ratio under Mendelian inheritance, leading to spurious signals in genetic association studies. Functions in this package are developed to account for this phenomenon using loglinear model and Transmission Disequilibrium Test (TDT). Some population information can also be calculated.

Copy Link

Version

Install

install.packages('TRD')

Monthly Downloads

119

Version

1.1

License

GPL (>= 2)

Maintainer

Lam Huang

Last Published

November 10th, 2015

Functions in TRD (1.1)

find.t

Find transmission ratio of minor alleles in mother, father or both parents.
gcount

Calculate genotype counts (additive model) for selected population.
rtrios

Generate simulated popoulation of case- and control-trios
ll

Fit Loglinear model with and without adjustment for TRD.
tdt

Compute TDT and adjusted TDT on case- and/or control-trios
prev

Calculate theoretical prevalence of disease
find.maf

Find minor allele frequency (MAF) in case-trios, control-trios, or the whole sample.
strata.cnt

Count trios for each of the 15/16 strata with mother-father-child genotypes MFC
TRD-package

Transmission Ratio Distortion