| Term 
 
        | 3 alleles --> extensive metabolizers 6 alleles --> intermediate metabolizers
 11 alleles --> poor metabolizers
 |  | Definition 
 
        | CYP2D6 (enzyme that possesses genetic variants affecting drug metabolism) |  | 
        |  | 
        
        | Term 
 
        | Allele 1 = normal phenotype Alleles2 and 3 = poor metabolizers
 |  | Definition 
 
        | Cyp2C19 (enzyme that possesses genetic variants affecting drug metabolism) |  | 
        |  | 
        
        | Term 
 
        | No gene expression or dysfunctional protein |  | Definition 
 
        | DNA fragment deletions or insertions into genes (altered gene DNA sequence) |  | 
        |  | 
        
        | Term 
 
        | If inserted intact, increased gene expression and protein levels; If not inserted intact --> DNA fragment insertion |  | Definition 
 
        | Gene duplication or increased copy number of genes (altered gene DNA sequence) |  | 
        |  | 
        
        | Term 
 
        | most common cause of gene sequence variation; SNP --> phenotypic change and can increase risk of disease; most SNP's occur in introns and rarely cause phenotypic disease |  | Definition 
 
        | Single Nucelotide Polymorphism (Altered Gene DNA sequence) |  | 
        |  | 
        
        | Term 
 
        | Hepatic enzyme that conjugates glucuronic acid to bilirubin to increase solubilityand elimination |  | Definition 
 
        | UDP-glucuronosyltransferase 1A1 (UGT1A1) |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | genetic variant UGT1A1*18 (poor/slow metabolizer of irinotecan --> increase drug levels)
 |  | 
        |  | 
        
        | Term 
 
        | labs will show drug levels in normal therapeuic range |  | Definition 
 
        | alteration of drug pharmacodynamics i.e. how patient responds |  | 
        |  | 
        
        | Term 
 
        | labs will show non-therapeutic circulating levels of drug and/or active metabolites |  | Definition 
 
        | Abnormal Drug Pharmacokinetics |  | 
        |  | 
        
        | Term 
 
        | Mechanisms of management strategies that are used to alter the pathophysiological symptoms |  | Definition 
 
        | Replacement therapy for hormone deficiencies; use of hormones or hormone analogs as pharmacological agents; utilization of agents to antagonize the ADR's of hormone action |  | 
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