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HyperlipidemiaPhase 4NCT00211705

Management of Elevated Cholesterol in the Primary Prevention Group of Adult Japanese(MEGA Study)

A Phase 4 study testing Diet and Diet+pravastatin in people with Hyperlipidemia, run by Mitsukoshi Health and Welfare Foundation.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

To evaluate the primary preventive effect of low-dose pravastatin against coronary heart disease (CHD) in Japanese hypercholesterolemic patients. Read more about this study

Who is it for?
Ages 40 to 70 years
Conditions the study is for
Hyperlipidemia
What is being tested?
Diet and Diet+pravastatin
How many people
8,000 participants
Where
No sites listed yet
Study dates
Feb 1994to Mar 2004
Phase
Phase 4
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • TC:220～270mg/dl
  • Male: 40-70 years old/ female: postmenopausal-70 years old
  • <40kg in weight

Who cannot join

  • FH
  • History of CHD(angina, MI, post-PTCA/CABG, etc.)
  • History of CVA(stroke, TIA, etc.)
  • Underlying malignant tumor

About this study

To evaluate the primary preventive effect of low-dose pravastatin against coronary heart disease (CHD) in Japanese hypercholesterolemic patients.

Read the detailed description

MEGA Study is the first prospective, randomized, controlled trial conducted in Japan to evaluate the primary preventive effect of pravastatin against CHD in daily clinical practice. Because the dose of pravastatin used in the MEGA Study was 10-20 mg/day, which is consistent with the approved doses in Japan and lower than the doses used in previous large-scale clinical trials.

Conditions
Hyperlipidemia
Being tested
Diet, Diet+pravastatin
Keywords
Hyperlipidemia, coronary heart disease, prevention, stroke, pravastatin
Medical subject headings
Hyperlipidemias, Coronary Disease, Stroke

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DietBehavioural

  • Diet+pravastatinDrug

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Coronary Heart Disease(CHD)[fatal/non-fatal MI, sudden/cardiac death, angina, revascularization]

Secondary outcomes (1)

  1. Stroke, cerebrovascular infarction(CI), CHD+CI, all cardiovascular events, total mortality

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Sep 2005 (estimated)
  2. Study startFeb 1994
  3. Study completionMar 2004

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
8,000 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00211705
Sponsor's protocol ID
MEGA
Status last verified
Jun 2005
First submitted
13 Sep 2005
Last updated
4 Dec 2006
Results posted
No

Publications

  • Management of Elevated Cholesterol in the Primary Prevention Group of Adult Japanese (MEGA) Study Group. Design and baseline characteristics of a study of primary prevention of coronary events with pravastatin among Japanese with mildly elevated cholesterol levels. Circ J. 2004 Sep;68(9):860-7. doi: 10.1253/circj.68.860.

    PubMed 15329509

  • Nakamura H, Arakawa K, Itakura H, Kitabatake A, Goto Y, Toyota T, Nakaya N, Nishimoto S, Muranaka M, Yamamoto A, Mizuno K, Ohashi Y; MEGA Study Group. Primary prevention of cardiovascular disease with pravastatin in Japan (MEGA Study): a prospective randomised controlled trial. Lancet. 2006 Sep 30;368(9542):1155-63. doi: 10.1016/S0140-6736(06)69472-5.

    PubMed 17011942

  • Tunnicliffe DJ, Palmer SC, Cashmore BA, Saglimbene VM, Krishnasamy R, Lambert K, Johnson DW, Craig JC, Strippoli GF. HMG CoA reductase inhibitors (statins) for people with chronic kidney disease not requiring dialysis. Cochrane Database Syst Rev. 2023 Nov 29;11(11):CD007784. doi: 10.1002/14651858.CD007784.pub3.

    PubMed 38018702

  • Nakamura H, Mizuno K; MEGA Study Group. Cardiovascular and cancer events in hyper-high-density lipoprotein cholesterolemic patients: a post hoc analysis of the MEGA study. Lipids Health Dis. 2014 Aug 18;13:133. doi: 10.1186/1476-511X-13-133.

    PubMed 25135178

  • Tajima N, Kurata H, Ohashi Y, Mizuno K, Nakamura H. Management of Elevated Cholesterol in the primary prevention Group of Adult Japanese (MEGA) Study assists the view that a fasting plasma glucose level >/=100 mg/dL increases cardiovascular risk. J Diabetes Investig. 2011 Oct 7;2(5):399-405. doi: 10.1111/j.2040-1124.2011.00121.x.

    PubMed 24843520

  • Matsushima T, Nakaya N, Mizuno K, Ohashi Y, Teramoto T, Yokoyama S, Ichikawa S, Ishikura N, Kamiyama K, Nakamura H; MEGA Study Group. The effect of low-dose pravastatin in metabolic syndrome for primary prevention of cardiovascular disease in Japan: a post hoc analysis of the MEGA study. J Cardiovasc Pharmacol Ther. 2012 Jun;17(2):153-8. doi: 10.1177/1074248411421777. Epub 2011 Oct 3.

    PubMed 22573644

  • Nakaya N, Mizuno K, Ohashi Y, Teramoto T, Yokoyama S, Hirahara K, Mizutani M, Nakamura H; MEGA Study Group. Low-dose pravastatin and age-related differences in risk factors for cardiovascular disease in hypercholesterolaemic Japanese: analysis of the management of elevated cholesterol in the primary prevention group of adult Japanese (MEGA study). Drugs Aging. 2011 Sep 1;28(9):681-92. doi: 10.2165/11595620-000000000-00000.

    PubMed 21815708

  • Kushiro T, Mizuno K, Nakaya N, Ohashi Y, Teramoto T, Yokoyama S, Kakinoki S, Nakamura H; MEGA Study Group. Blood pressure control status and effects of pravastatin on cardiovascular events occurrence in patients with dyslipidaemia. J Hum Hypertens. 2012 Jun;26(6):388-95. doi: 10.1038/jhh.2011.49. Epub 2011 May 19.

    PubMed 21593784

  • Nakamura H, Mizuno K, Ohashi Y, Yoshida T, Hirao K, Uchida Y; MEGA Study Group. Pravastatin and cardiovascular risk in moderate chronic kidney disease. Atherosclerosis. 2009 Oct;206(2):512-7. doi: 10.1016/j.atherosclerosis.2009.03.031. Epub 2009 Apr 5.

    PubMed 19423108

  • Kushiro T, Mizuno K, Nakaya N, Ohashi Y, Tajima N, Teramoto T, Uchiyama S, Nakamura H; Management of Elevated Cholesterol in the Primary Prevention Group of Adult Japanese Study Group. Pravastatin for cardiovascular event primary prevention in patients with mild-to-moderate hypertension in the Management of Elevated Cholesterol in the Primary Prevention Group of Adult Japanese (MEGA) Study. Hypertension. 2009 Feb;53(2):135-41. doi: 10.1161/HYPERTENSIONAHA.108.120584. Epub 2008 Dec 22.

    PubMed 19104004

  • Mizuno K, Nakaya N, Ohashi Y, Tajima N, Kushiro T, Teramoto T, Uchiyama S, Nakamura H; MEGA Study Group. Usefulness of pravastatin in primary prevention of cardiovascular events in women: analysis of the Management of Elevated Cholesterol in the Primary Prevention Group of Adult Japanese (MEGA study). Circulation. 2008 Jan 29;117(4):494-502. doi: 10.1161/CIRCULATIONAHA.106.671826. Epub 2008 Jan 2.

    PubMed 18172039

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Diet and Diet+pravastatin in people with Hyperlipidemia, run by Mitsukoshi Health and Welfare Foundation.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 4 Dec 2006. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Coronary Heart Disease(CHD)[fatal/non-fatal MI, sudden/cardiac death, angina, revascularization]. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00211705, which also lists 11 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Dec 2006.

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