Effectiveness and Tolerability of Long-Acting Nifedipine Gastrointestinal Therapeutic System in Chronic Kidney Disease With Uncontrolled Hypertension Patients, a Prospective, Multicenter, Observational Study

Study Overview
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Brief Summary
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Chronic kidney disease (CKD) and hypertension are two closely related common chronic diseases that have serious implications to human health. Hypertension is a major cause for progression of renal disease and a risk factor for cardiovascular disease (CVD). Control of Blood Pressure (BP) to target is now considered to be the main goal in the treatment of patients with CKD. In clinical practice, it is difficult for CKD patients with hypertension to achieve systolic BP (SBP) or diastolic BP (DBP) goal; oftentimes, calcium channel blocker (CCB) class of drugs, for example, nifedipine gastrointestinal therapeutic system (GITS), is used in such patients. Previous data have demonstrated nifedipine to be having a significant dose-response relationship; that is, nifedipine 60 mg provided better BP reduction than 30 mg. However, there are limited studies that have evaluated the efficacy and tolerability of nifedipine GITS 60 mg in Chinese CKD patients with hypertension. Hereby, the objective of this study was to evaluate the effectiveness and tolerability of nifedipine GITS 60 mg treatment in a large cohort of CKD patients with uncontrolled hypertension.

Official Title
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Effectiveness and Tolerability of Long-Acting Nifedipine Gastrointestinal Therapeutic System in Chronic Kidney Disease With Uncontrolled Hypertension Patients, a Prospective, Multicenter, Observational Study

Conditions
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Hypertension

Intervention / Treatment
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* Drug: Nifedipine controlled-release tablets(Nifedipine GITS, ADALAT, BAYA1040)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male and female patients aged 18-70 years Patients diagnosed with CKD (Estimated Glomerular Filtration Rate (eGFR) >15 mL/min/1.73 m*2) and hypertension without dialysis/replacement therapy Patients with uncontrolled hypertension (office SBP ≥140 mmHg and DBP ≥ 80 mmHg) who have received Renin-Angiotensin System Inhibitors (RASI) treatment or have not received RASI treatment because of any contraindications Patients who haven't received nifedipine GITS 60 mg (once per day) previously Patients for whom the decision to initiate treatment with nifedipine GITS 60 mg was made as per the investigator's routine treatment practice Signed informed consent No participation in an investigational program with interventions outside of routine clinical practice Exclusion Criteria: Have a contraindication to nifedipine GITS according to the approved prescribing information Patients participating in an investigational program with interventions outside of routine clinical practice

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Nifedipine controlled-release tablets(Nifedipine GITS, ADALAT, BAYA1040)<br>Male and female patients with a diagnosis of CKD and hypertension (age, 18-70 years) was enrolled. | Drug: Nifedipine controlled-release tablets(Nifedipine GITS, ADALAT, BAYA1040)<br>* Nifedipine GITS 60 mg (once per day)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in office systolic blood pressure from baseline to week 12 | Change in office systolic blood pressure from baseline to week 12 | At week 12 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in office diastolic blood pressure from baseline to week 12 | Change in office diastolic blood pressure from baseline to week 12 | At week 12 | 
| Change in systolic blood pressure and diastolic blood pressure from baseline to week 12 according to baseline SBP stratification | Change in systolic blood pressure and diastolic blood pressure from baseline to week 12 according to baseline SBP stratification, stratified by two subgroups baseline, SBP 140-160 mmHg and ≥ 160 mmHg | At week 12 | 
| Change in systolic blood pressure and diastolic blood pressure from baseline to week 12 at different stages of Chronic Kidney Disease | Change in systolic blood pressure and diastolic blood pressure from baseline to week 12 at different stages of Chronic Kidney Disease, stage 1 to stage 5 | At week 12 | 
| Systolic blood pressure and diastolic blood pressure control rate at week 12 | Systolic blood pressure and diastolic blood pressure control rate at week 12 | At week 12 | 
| Number of participants with adverse events and serious adverse events |  | At week 12 |