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Genetics and celiac disease: the importance of screening. The prevalence of celiac disease (CD) is increasing. Despite an increased awareness and an improvement in diagnostic testing, the majority of individuals with CD remain undiagnosed. Currently, genetic testing in screening for CD is used only to exclude a diagnosis or reinforce a strong clinical suspicion. In this paper, we review the most current literature regarding genetic testing in CD. In response to important data revealing that an individual's HLA haplotype is one of the strongest known predictors of CD, we propose genetic screening for at-risk infants to stratify individuals based on genetic risk to ultimately create genetic specific screening algorithms.