Myfortic or CellCept Gastrointestinal Effects in African American Kidney Recipients

At 24 weeks, we assessed the number of patients at this timepoint who required permanent dose decrease or discontinuation of either enteric coated mycophenolate sodium or mycophenolate mofetil or its generic equivalent formulation manufactured by Sandoz related to gastrointestinal toxicity.

Time frame: 6 months

Population: Based on the number of patients who were participating in the trial at that timepoint and had not withdrawn at 24 weeks

The Gastrointestinal Symptom Rating Scale (GSRS) is a 15-item self-administered questionnaire to assess symptoms associated with common gastrointestinal (GI) disorders, and has been validated in renal transplant recipients. It uses a seven-graded Likert scale, where 1 represents the most positive option and 7 the most negative one and the patient grades symptoms based on the past 7 days. A score of ≥ 2 indicates the presence of GI symptoms. Higher values indicate more unfavorable conditions. The questionairre is divided into 5 sub-scales: diarrhea, indigestion, constipation, abdominal pain, and reflux and a mean score is calculated for each dimension. The lowest mean score possible for each dimension is 1 and the highest is 7. Patients completed a GSRS survey at baseline (pre-transplant to two days after transplant), and at weeks 1,4,12 and 24 after transplant.

Time frame: baseline (pre-transplant to two days after transplant) and at 6 months after transplant.

Population: Patients who withdrew from the study before 24 weeks were excluded from this analysis.

Modification of Diet and Renal Disease (MDRD) Measured Glomerular Filtration Rates were used as part of a measure of renal function and measured at 24 weeks in patients who were still participating in the study at that point.

Time frame: 6 months

Population: Any patient with Modification of Diet and Renal Disease (MDRD) Measured Glomerular Filtration Rates at 24 weeks was included in the analysis

Pharmacokinetics is the study of how a drug is absorbed and broken down in the body. Pharmacokinetics of Enteric-Coated Mycophenolate Sodium or Mycophenolate Mofetil are measured by a level called mycophenolic acid level. Mycophenolic acid levels in this pharmacokinetic study were drawn starting in the morning at time zero (immediately prior to morning dose, also known as trough), then at 0.5, 1,1.5, 2, 2.5, 3,3.5,4,6, 8 and 12 hours post dose. Data was also dose-normalized (concentration was divided by dose). A mycophenolic acid area under the curve value, also known as AUC represents drug exposure.

Time frame: 1 and 6 months

Population: Any participant who completed at least one pharmacokinetic studies was included in this pharmacokinetic analyses.

Pharmacokinetics is the study of how a drug is absorbed and broken down in the body. Pharmacokinetics of Enteric-Coated Mycophenolate Sodium or Mycophenolate Mofetil are measured by a level called mycophenolic acid level. Mycophenolic acid levels in this pharmacokinetic study were drawn starting in the morning at time zero (immediately prior to morning dose, also known as trough), then at 0.5, 1,1.5, 2, 2.5, 3,3.5,4,6, 8 and 12 hours post dose. Data was also dose-normalized (concentration was divided by dose).A mycophenolic acid drawn at the peak level is called C Max or maximum concentration.

Time frame: 1 and 6 months

Population: Any participant who completed at least one pharmacokinetic studies was included in this pharmacokinetic analyses.

Pharmacokinetics is the study of how a drug is absorbed and broken down in the body. Pharmacokinetics of enteric coated mycophenolate sodium and mycophenolate mofetil are measured by a level called mycophenolic acid level. Mycophenolic acid levels in this pharmacokinetic study were drawn starting in the morning at time zero (immediately prior to morning dose, also known as trough), then at 0.5, 1,1.5, 2, 2.5, 3,3.5,4,6, 8 and 12 hours post dose. Data was also dose-normalized (concentration was divided by dose).

Time frame: 1 and 6 months

Population: Any participant who completed at least one pharmacokinetic studies was included in this analysis.

Serum creatinine lab values were used as part of a measure of renal function at 24 weeks for any patient that was still participating in the study at this time-point.

Time frame: 6 months

Population: Any patient with serum creatinine values available at 24 weeks

The incidence of intolerance was defined as transient dose reduction or transient discontinuation of enteric coated mycophenolate sodium or mycophenolate mofetil or its generic equivalent manufactured by Sandoz meaning doses could subsequently be resumed or increased back to original starting dose, once intolerance resolved.

Time frame: 6 months

Population: Based on number of patients participating in the study at 6 months

All rejection episodes of the kidney transplant were proven by kidney transplant biopsy and were measured at 24 weeks for all patients still participating in the study at that timepoint.

Time frame: 6 months

Population: Included any patient who experienced rejection while enrolled in the study up to 6 months post-transplant.

The Gastrointestinal Symptom Rating Scale (GSRS) is a 15-item self-administered questionnaire to assess symptoms associated with common gastrointestinal (GI) disorders, and has been validated in renal transplant recipients. It uses a seven-graded Likert scale, where 1 represents the most positive option and 7 the most negative one and the patient grades symptoms based on the past 7 days. A score of ≥ 2 indicates the presence of GI symptoms. Higher values indicate more unfavorable conditions. The questionairre is divided into 5 sub-scales: diarrhea, constipation, abdominal pain, indigestion and reflux and a mean score is calculated for each dimension. The lowest mean score possible for each dimension is 1 and the highest is 7. Patients completed a GSRS survey at baseline (pre-transplant to two days after transplant), and at weeks 1,4,12 and 24 post-transplant. Patients who withdrew from the study only had data included up to the point of withdraw. No values were carried forward.

Time frame: 6 months

Population: Any patient with a mean GSRS subscale score \> 1 on dimensions constipation or diarrhea were considered to have lower GI symptoms.

The Gastrointestinal Symptom Rating Scale (GSRS) is a 15-item self-administered questionnaire to assess symptoms associated with common gastrointestinal (GI) disorders, and has been validated in renal transplant recipients. It uses a seven-graded Likert scale, where 1 represents the most positive option and 7 the most negative one and the patient grades symptoms based on the past 7 days. A score of ≥ 2 indicates the presence of GI symptoms. Higher values indicate more unfavorable conditions. The questionairre is divided into 5 sub-scales: diarrhea, constipation, abdominal pain, indigestion and reflux and a mean score is calculated for each dimension. The lowest mean score possible for each dimension is 1 and the highest is 7. Patients completed a GSRS survey at baseline (pre-transplant to two days after transplant), and at weeks 1,4,12 and 24 post-transplant.

Time frame: 6 months

Population: Any patient with mean GSRS subscale score \>1 from dimensions: abdominal pain, indigestion, or reflux were considered to have upper GI symptoms.

If patients were not on any medications from a medication class known as H-2 antagonists, they were started on ranitidine 150 mg orally twice daily after transplant (with dose adjusted for renal function). Patients were excluded if they were on proton pump inhibitor at time of study screening, however some patients required addition of proton pump inhibitor post-study enrollment. If a patient had upper gastrointestinal side effects such as acid reflux unreleived on ranitidine therapy or nausea, they were switched to a proton pump inhibitor.

Time frame: 6 months

Population: Based on number of patients participating in study at 6 months