UMIN-CTR Clinical Trial

Basic information
Official scientific title of the study	Prospective, randomized, open-label, clinical trial comparing the effects of losartan (regular dose) /hydrochlorothiazide combination and losartan alone (high-dose) on blood pressure, endothelial function and markers for obesity/oxidative stress/chronic kidney diseases
Title of the study (Brief title)	Prospective, randomized, open-label, clinical trial comparing the effects of losartan/hydrochlorothiazide combination and losartan alone
Region	Japan

Condition
Condition	Hypertension
Classification by specialty	Cardiology
Classification by malignancy	Others
Genomic information	NO

Objectives
Narrative objectives1	Comparison of losartan (standard dose)/hydrochlorothiazide combination and losartan alone (high dose) on blood pressure, endothelial function and levels of markers for inflammation/obesity/oxidative stress/early stage kidney diseases.
Basic objectives2	Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase

Assessment
Primary outcomes	Blood pressure (Office/Home monitoring) Flow-mediated vasodilation in forearm Heparin-releasable EC-SOD levels Twelve and Twenty four weeks after administration
Key secondary outcomes	Markers indicating obesity (e.g. adiponectin), inflammation (high sensitive CRP), oxidative stress (8-OHdG/ MDA-LDL), early-staged kidney diseases (microalbuminuria) Twelve weeks and Twenty four after administration

Base
Study type	Interventional

Study design
Basic design	Cross-over
Randomization	Randomized
Randomization unit	Individual
Blinding	Open -but assessor(s) are blinded
Control	Active
Stratification
Dynamic allocation
Institution consideration
Blocking
Concealment

Intervention
No. of arms	2
Purpose of intervention	Treatment
Type of intervention	Medicine
Interventions/Control_1	Administration of losartan (standard dose)/hydrochlorothiazide combination
Interventions/Control_2	Administration of losartan alone (high-dose)
Interventions/Control_3
Interventions/Control_4
Interventions/Control_5
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10

Eligibility
Age-lower limit	20 years-old <
Age-upper limit	80 years-old >
Gender	Male and Female
Key inclusion criteria	1) Hypertensive patients whose blood pressures did not reach the levels recommended by Hypertension Guidelines 2009 of Japanese Association of Hypertension, even when administered standard doses of angiotensin receptor blokers. 2) Outpatients 3) Subjects who gave written informed consent
Key exclusion criteria	1)Allergy against losartan/hydrochlorothiazide 2)Poor-controlled hypertension (DBP>110 mmHg) 3)Poor-controlled diabetes (HbA1c>8.0 %) 4)Secondary hypertension 5)History of stroke, acute coronary syndrome or any cardiovascular diseases needed for inpatient-treatments within 6 months 6)Either level of aspartate aminotransaminase or alanine aminotransferase exceeds three-fold of the normal limits. 7)End stage renal disease 8)Symptomatic (NYHA III or IV) congestive heart failure 9)Malignancies or other diseases with poor prognosis 10)Pregnant 11)Subjects whose doctor in charge do not agree to join the trial
Target sample size	30

Research contact person
Name of lead principal investigator	Katsunori Ikewaki
Organization	National Defense Medical College
Division name	Department of Internal Medicine I
Address	3-2 Namiki, Tokorozawa, JAPAN 359-8513
TEL	04-2995-1597
Email	katsunorike@ndmc.ac.jp

Public contact
Name of contact person	Makoto Ayaori
Organization	National Defense Medical College
Division name	Department of Internal Medicine I
Address	3-2 Namiki, Tokorozawa, JAPAN 359-8513
TEL	04-2995-1597
Homepage URL
Email	ayaori@ndmc.ac.jp

Sponsor
Institute	National Defense Medical College
Institute
Department

Funding Source
Organization	Foundation for Promotion of Defense Medicine
Organization
Division
Category of Funding Organization	Non profit foundation
Nationality of Funding Organization	Japan

Other related organizations
Co-sponsor
Name of secondary funｄer(s)

Secondary IDs
Secondary IDs	NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2
IND to MHLW

Institutions
Institutions	防衛医科大学校

Other administrative information
Date of disclosure of the study information	2010 Year 01 Month 03 Day

Progress
Recruitment status	Terminated
Date of protocol fixation	2009 Year 12 Month 15 Day
Anticipated trial start date	2010 Year 01 Month 01 Day
Last follow-up date	2011 Year 12 Month 01 Day
Date of closure to data entry
Date trial data considered complete
Date analysis concluded

Related information
URL releasing protocol
Publication of results	Unpublished
URL releasing results
Results
Other related information

Management information
Registered date	2010 Year 01 Month 02 Day
Last modified on	2017 Year 03 Month 20 Day

Link to view the page
URL(English)	https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000003402