This is an open-label, placebo run-in study to investigate the genetic and biomedical predictors of blood pressure response to bisoprolol. After informed consent is obtained, subjects will be withdrawn from previous antihypertensive therapy and given placebo for at least 2 weeks. Compliance will be assessed using pill counting, and any subject will a compliance less than 80% during the placebo run-in period will be excluded from the study. Bisoprolol 2.5 mg will be given once daily for 6 weeks. At baseline and after 6 weeks on bisoprolol 2.5 mg the clinic sitting blood pressure, 24-hour ambulatory blood pressure (if the patient is willing to do this), clinical characteristics and biochemical profile will be measured. Central aortic blood pressure will be measured with the A-PULSE device at baseline and after 6 weeks treatment. After completing 6 weeks treatment with bisoprolol 2.5 mg daily, the patient will continue treatment with bisoprolol for a total of 24 weeks unless there is any adverse event that requires discontinuation of bisoprolol.

NCT02398929

Conditions

1. Hypertension

Interventions

1. Drug: Bisoprolol 2.5 mg
2. Drug: Placebo

MeSH:Hypertension Essential Hypertension

HPO:Hypertension

Influence of the two common polymorphisms in the beta1-adrenoceptor (ADRB1) gene on changes in sitting clinic blood pressure after 6 weeks treatment with bisoprolol 2.5 mg daily.. Subjects will be divided according to the Gly389Arg and Ser49Gly polymorphisms in ADRB1 gene and the clinic blood pressure changes at 6 weeks compared between these groups.. Change of blood pressure from baseline to 6 weeks by clinic sitting blood pressure according to other genotypes.. Patients will be divided into groups according to genotypes of the Fok+/Fok- polymorphism in the G-protein alpha subunit (GNAS) gene and the T393C polymorphism in the G-protein alpha subunit 1 (GNAS1) gene, and changes in blood pressure after 6 weeks treatment compared.. Change of blood pressure from baseline to 24 weeks by clinic sitting blood pressure according to other genotypes.. Patients will be divided into groups according to genotypes of the Fok+/Fok- polymorphism in the G-protein alpha subunit (GNAS) gene and the T393C polymorphism in the G-protein alpha subunit 1 (GNAS1) gene, and changes in blood pressure after 24 weeks treatment compared.. Influence of the two common polymorphisms in the beta1-adrenoceptor (ADRB1) gene on changes in ambulatory blood pressure (ABP) after 6 weeks treatment with bisoprolol 2.5 mg daily.. Subjects will be divided according to the Gly389Arg and Ser49Gly polymorphisms in the ADRB1 gene and the ambulatory blood pressure changes at 6 weeks compared between these groups.. Inclusion Criteria: - Patients with essential hypertension - For uncomplicated hypertensive patients on no antihypertensive treatment, sitting clinic systolic blood pressure of 140-169 mmHg and / or a sitting clinic diastolic blood pressure of 90-109 mmHg. --- Gly389Arg --- --- Ser49Gly --- --- T393C ---

Influence of the two common polymorphisms in the beta1-adrenoceptor (ADRB1) gene on changes in sitting clinic blood pressure after 6 weeks treatment with bisoprolol 2.5 mg daily.. Subjects will be divided according to the Gly389Arg and Ser49Gly polymorphisms in ADRB1 gene and the clinic blood pressure changes at 6 weeks compared between these groups.. Change of blood pressure from baseline to 6 weeks by clinic sitting blood pressure according to other genotypes.. Patients will be divided into groups according to genotypes of the Fok+/Fok- polymorphism in the G-protein alpha subunit (GNAS) gene and the T393C polymorphism in the G-protein alpha subunit 1 (GNAS1) gene, and changes in blood pressure after 6 weeks treatment compared.. Change of blood pressure from baseline to 24 weeks by clinic sitting blood pressure according to other genotypes.. Patients will be divided into groups according to genotypes of the Fok+/Fok- polymorphism in the G-protein alpha subunit (GNAS) gene and the T393C polymorphism in the G-protein alpha subunit 1 (GNAS1) gene, and changes in blood pressure after 24 weeks treatment compared.. Influence of the two common polymorphisms in the beta1-adrenoceptor (ADRB1) gene on changes in ambulatory blood pressure (ABP) after 6 weeks treatment with bisoprolol 2.5 mg daily.. Subjects will be divided according to the Gly389Arg and Ser49Gly polymorphisms in the ADRB1 gene and the ambulatory blood pressure changes at 6 weeks compared between these groups.. Inclusion Criteria: - Patients with essential hypertension - For uncomplicated hypertensive patients on no antihypertensive treatment, sitting clinic systolic blood pressure of 140-169 mmHg and / or a sitting clinic diastolic blood pressure of 90-109 mmHg. --- Gly389Arg --- --- Ser49Gly --- --- T393C --- --- T393C ---