Conditions: Hypertension
Keywords: Hypertension aliskiren cardiovascular diseases
Allocation: NON_RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 186
Healthy volunteers: no

Brief summary:
This study will assess the safety and efficacy of aliskiren plus hydrochlorothiazide (HCTZ) in patients who do not achieve controlled blood pressure levels after treatment with another specified antihypertensive medication. There was an optional study extension for the first eligible 60 patients who wanted to participate that contains the triple therapy with amlodipine 5 mg and aliskiren 300 mg plus HCTZ 25 mg.

Detailed description:
Title of study extension: An open-label, multicenter extension to evaluate the efficacy and safety of a 4 week therapy with amlodipine 5 mg and aliskiren 300 mg plus HCTZ 25 mg in hypertensive patients not adequately responding to a 4 week therapy each with the combinations of candesartan 32 mg plus hydrochlorothiazide 25 mg followed by aliskiren 300mg plus hydrochlorothiazide 25 mg

Arms:
arm 1: None

Interventions: intervention 1: Candesartan+HCTZ - Phase 1 intervention 2: Aliskiren+HCTZ - Phase 2 intervention 3: Aliskiren+HCTZ+amlodipine - Phase 3
Intervention descriptions: intervention 1: 4 weeks treatment with candesartan 32 mg (two 16 mg tablets) plus hydrochlorothiazide 25 mg (two 12.5 mg tablets) taken orally with water in the morning between 7 and 10 am. intervention 2: Patients with uncontrolled mean sitting diastolic blood pressure (msDBP ≥ 90 mm Hg) at the end of Phase 1 were treated for 4 weeks with aliskiren 300 mg plus hydrochlorothiazide 25 mg in a single tablet taken orally with water in the morning between 7 and 10 am. intervention 3: The first 60 patients with uncontrolled mean sitting systolic or diastolic blood pressure (msDBP ≥ 90 mm Hg and/or msSBP ≥ 140 mm Hg) at the end of Phase 2 were offered 4 weeks treatment with aliskiren 300 mg plus HCTZ 25 mg in a single tablet plus an amlodipine 5 mg tablet taken orally with water in the morning between 7 and 10 am.

Protocol document: