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Recruitment status Terminated
Unique ID issued by UMIN C000000381
Receipt No. R000000473
Scientific Title Nippon ICD Plus Pharmacologic Option Necessity
Date of disclosure of the study information 2006/04/01
Last modified on 2019/01/31

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Basic information
Public title Nippon ICD Plus Pharmacologic Option Necessity
Acronym NIPPON study
Scientific Title Nippon ICD Plus Pharmacologic Option Necessity
Scientific Title:Acronym NIPPON study

Condition patients with spontaneous episode(s) of sustained ventricular tachycardia or ventricular fibrillation associated with organic heart disease
Classification by specialty
Classification by malignancy Others
Genomic information NO

Narrative objectives1 the first prospective randomized study to test the hypothesis whether amiodarone could improve the patient's clinical outcome by reducing the amount of ICD therapy in the Japanese patient population
Basic objectives2 Safety,Efficacy
Basic objectives -Others
Trial characteristics_1 Confirmatory
Trial characteristics_2 Explanatory
Developmental phase Not applicable

Primary outcomes Primary End-Point: The primary end-points of this study are: (1) an appropriate ICD therapy; and (2) an alteration of the assigned treatment because of its harmful effect and/or frequent ICD therapy deliveries (more than 3 sessions of ICD first therapy within 24h). The latter one includes termination of amiodarone or a transition to an alternative antiarrhythmic drug (class I or class III) in the amiodarone group, or curative interventions such as catheter ablation or cryosurgery in either group
Key secondary outcomes Secondary End-Points: The secondary end-points of this study are: (1) total death; (2) arrhythmia death; (3) cardiac death; (4) re-hospitalization aiming to control VT/VF; (5) impairment of patient's QOL; (6) deterioration of heart failure; (7) abnormal increase in the DFT (less than a 10J safety margin); (8) inappropriate ICD therapy; or (9) occurrence of side-effects from amiodarone

Study type Interventional

Study design
Basic design Parallel
Randomization Randomized
Randomization unit Individual
Blinding Open -no one is blinded
Control No treatment
Stratification NO
Dynamic allocation
Institution consideration Institution is not considered as adjustment factor.
Concealment Central registration

No. of arms 2
Purpose of intervention Treatment
Type of intervention
Interventions/Control_1 Amiodarone
Interventions/Control_2 ICD

Age-lower limit
20 years-old <=
Age-upper limit

Not applicable
Gender Male and Female
Key inclusion criteria The patients entering this trial will meet the following entry criteria: (1) all patients will have spontaneous episode(s) of sustained VT or VF; (2) all patients will have organic heart disease as documented either by electrocardiography, echocardiography, cardiac catherterization, nuclear scintigraphy, computed tomography or magnetic resonance imaging; (3) all patients will correspond to the guidelines for ICD therapy determined by the Ministry of Health, Labor and Welfare, in Japan; (4) all patients will be free of any class I or class III drugs at the time of the ICD implantation, and all anti-arrhythmic srugs (except for beta-blockers) will be discontinued at least 5 half-lives before implantation. Beta-blockers will be allowed to be prescribed when appropriate.
Key exclusion criteria The exclusion criteria for this study are when patients have the following: (1) idiopathic VT/VF; (2) Brugada syndrome; (3) congenital long QT syndrome; (4) an incessant form of VT/VF; (5) VT/VF resulting from a transient or reversible disorder such as acute myocardial infarction, electrolyte imbalance or drugs; (5) are aged less than 20 years old; (6) are taking class I or class III drugs (including amiodarone), which cannot be discontinued; (7) a life ecpectancy less than 2 years; (8) congestive heart failure with a New York Heart Association (NYHA) cardiac function class IV or are candidates for cardiac transplantation; (9) bradycardia less than 50 beats/min.; (10) second- or third-degree atrioventricular block; (11) corrected QT interval equal to or longer than 480ms; (12) significant pulmonary fibrosis, diffusion capacity of the lung for carbon monoxide (DLco) < 60% ro high molecular weight mucin-like antigen (KL-6) >1,000 U/ml; (14) more than 2 episodes of hemodynamically unstable sustained VT or VF per month before the ICD implantation; (15) are condidates for curative procedures for VT/VF such as catheter ablation or cryosurgery; (16) unstable angina pectoris; (17) DFT at the ICD implantation of more than 20 J; and (18) are pregnant (or have the possibility of), or are breast feeding.
Target sample size 400

Research contact person
Name of lead principal investigator
1st name
Middle name
Last name Yoshifusa Aizawa
Organization Niigata University School of Medicine
Division name First Department of Internal Medicine
Zip code
Address 1-754 Asahimachi-dori Niigata City, Niigata, Japan
TEL 025-227-2185

Public contact
Name of contact person
1st name
Middle name
Last name Hiroshi Furushima
Organization Niigata University School of Medicine
Division name First Department of Internal Medicine
Zip code
Address 1-754 Asahimachi-dori Niigata City, Niigata, Japan
TEL 025-227-2185
Homepage URL

Institute NIPPON Investigators

Funding Source
Organization Japan Heart Foundation
Category of Funding Organization Non profit foundation
Nationality of Funding Organization Japan

Other related organizations
Co-sponsor Department of Cardiovascular Medicine, National Cardiovascular Center
Name of secondary funder(s)

IRB Contact (For public release)

Secondary IDs
Secondary IDs NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2


Other administrative information
Date of disclosure of the study information
2006 Year 04 Month 01 Day

Related information
URL releasing protocol
Publication of results Unpublished

URL related to results and publications
Number of participants that the trial has enrolled
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Adverse events
Outcome measures
Plan to share IPD
IPD sharing Plan description

Recruitment status Terminated
Date of protocol fixation
2006 Year 03 Month 01 Day
Date of IRB
Anticipated trial start date
2006 Year 04 Month 01 Day
Last follow-up date
2010 Year 03 Month 01 Day
Date of closure to data entry
Date trial data considered complete
Date analysis concluded

Other related information

Management information
Registered date
2006 Year 03 Month 29 Day
Last modified on
2019 Year 01 Month 31 Day

Link to view the page

Research Plan
Registered date File name

Research case data specifications
Registered date File name

Research case data
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