Codeine in Sickle Cell Disease

Sickle Cell Disease

codeine, pain, CYP2D6, genotype, morphine, sickle cell, pharmacokinetic

The objective of this study is to determine if a subject's genetic make-up would affect the treatment response to codeine in subjects with sickle cell disease.

People with sickle cell disease require oral pain medications to manage an acute pain crisis. Sometimes these individuals fail to obtain adequate pain relief with the medications prescribed for outpatient use resulting in emergency room visits and hospital admissions. Subsequently, many patients are admitted to the hospital for pain management for a few days until the pain crisis resolves. The most common medications prescribed to sickle cell individuals for outpatient use include codeine and hydrocodone containing medications (i.e. Tylenol #3™, Vicodin™, Lortab™). These medications must be broken down in the body to make the active pain reliever (morphine or hydromorphone, respectively). Some individuals may not be able to break down these medications to the active pain reliever; therefore, these individuals will likely continue to experience pain unless they take other pain medications. We will determine whether genotype estimates the ability of CYP2D6 to break down codeine to the active pain reliever in individuals with sickle cell disease.

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United States