Mendelian Randomization

Search for glossary terms (regular expression allowed)
Begin with Contains Exact termSounds like
Term Definition
Mendelian Randomization

the basic idea of the Mendelian randomization is to use genetic variables as instrumental variables, i.e., genes associated with an exposure (in this study, alcohol consumption or alcohol metabolism) but not directly related to outcome (in this study, HDL-cholesterol and other lipid parameters).  Since the genetic pattern is determined before birth, it should not (at least, in theory) be confounded by later lifestyle exposures or outcome variables.  Thus, it allows the investigators to make causal inference.

Mendelian randomization provides an approach to addressing questions of causality without many of the typical biases that impact the validity of traditional epidemiologic approaches. While Mendelian randomization studies can provide important suggestive evidence for causal relations between risk factor (consumption of alcoholic beverages in this case) and disease outcome (blood lipid levels), they are not true experiments and are dependent on several assumptions. Evidence from randomized controlled trials, when possible, should continue to guide clinical decisions.

Hits: 277

Disclaimer

The authors have taken reasonable care in ensuring the accuracy of the information herein at the time of publication and are not responsible for any errors or omissions. Read more on our disclaimer and Privacy Policy.