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GENES AND GENE POLYMORPHISMS ASSOCIATED WITH PERIODONTAL DISEASE
D.F. Kinane*
University of Louisville School of Dentistry, Louisville, KY 40292, USA;
T.C. Hart
Center for Craniofacial and Dental Genetics, University of Pittsburgh, Pittsburgh, PA, USA

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Figure 1. The classic relationship among phenotype, environment, and genotype. For the periodontal disease phenotype, environmental risk factors include: smoking status, plaque control, socio-economic status, diabetes, etc. G x E is the interaction between environment and genotype. * includes gene-gene interactions.
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Figure 2. Steps in determining a link between a polymorphism and a disease. (1) Does Polymorphism D influence Gene C functionally? (2) Does Gene C uniquely result in Defect B? (3) Does Defect B have mechanistic plausibility for Disease A?
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Critical Reviews in Oral Biology & Medicine, Vol. 14, No. 6,
430-449 (2003)
DOI: 10.1177/154411130301400605

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