RT Book, Section A1 Holliday, Elizabeth G. A1 Ioannidis, John P. A. A1 Thakkinstian, Ammarin A1 McEvoy, Mark A1 Scott, Rodney J. A1 Minelli, Cosetta A1 Thompson, John A1 Infante-Rivard, Claire A1 Guyatt, Gordon A1 Attia, John A2 Guyatt, Gordon A2 Rennie, Drummond A2 Meade, Maureen O. A2 Cook, Deborah J. SR Print(0) ID 1183877650 T1 How to Use an Article About Genetic Association T2 Users' Guides to the Medical Literature: A Manual for Evidence-Based Clinical Practice, 3rd ed YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 978-0-07-179071-0 LK jamaevidence.mhmedical.com/content.aspx?aid=1183877650 RD 2024/10/09 AB This chapter is a guide for clinicians using genetic association studies to inform their clinical practice. In this chapter, which is restricted to genetic association studies and does not deal with other types of designs, such as genetic linkage studies, we begin by summarizing the key concepts in genetics that are the necessary basis for understanding genetic association studies. We then introduce the idea of genetic association for both single-candidate gene and genome-wide association studies (GWASs). We use the APOE gene polymorphism and its association with Alzheimer disease as a case study to demonstrate the concepts and introduce the terms used in this field.