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SchizophreniaPhase 2/3NCT00419146

Treatment of Schizophrenia With an Omega-3 Fatty Acid (EPA) and Antioxidants

A Phase 2/3 study testing Ethyl-eicosapentaenoic acid (EPA) and Vitamins E + C in people with Schizophrenia and Schizophreniform Disorders, run by University Hospital, Aker at 1 site in Norway.

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

The purpose of this trial is to study the effect of adding the omega-3 fatty acid EPA and/or Vitamins E + C to antipsychotic drugs in younger patients with schizophrenia and related psychoses. Read more about this study

Who is it for?
Ages 18 to 40 yearsHealthy volunteers can take part
What is being tested?
Ethyl-eicosapentaenoic acid (EPA) and Vitamins E + C
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
99 participants
Where
1 siteNorway
Study dates
Sep 2001to Apr 2004
Phase
Phase 2/3
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 18 to 40 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Patients with schizophrenia, schizophreniform disorder or schizoaffective disorder (DSM-IV)
  • Admitted to a psychiatric hospital/department within the previous twenty-one days before screening
  • Less than fifteen years, in retrospect, since first psychotic symptoms (DSM-IV 295, criteria A,1-4)
  • Age 18-40 years
  • Speaks fluently a Scandinavian language
  • A written informed consent must be obtained before any trial-related activities

Who cannot join

  • A diagnosis of substance dependence (DSM-IV)
  • Known allergy to study medication
  • Currently taking warfarin or having anamnestic indicators of impaired haemostasis (profuse bleeding, except epistaxis)

Trial locations and contacts

1 site in 1 country.

Norway1 site
  • Aker University Hospital

    Oslo, 0320

Other trials in Norway

About this study

Official title: A Multicentre, Placebo-controlled Trial of Eicosapentaenoic Acid (EPA) and Antioxidant Supplementation in the Treatment of Schizophrenia and Related Disorders

The purpose of this trial is to study the effect of adding the omega-3 fatty acid EPA and/or Vitamins E + C to antipsychotic drugs in younger patients with schizophrenia and related psychoses.

Read the detailed description

Objective:

Study the effect of adding Ethyl-EPA and/or Vitamins E + C to antipsychotic drugs in younger patients with schizophrenia and related psychoses.

Methods and material:

  • Design: Multicentre, randomized, double-blind, placebo-controlled, fixed dose, 2x2 factorial, add-on clinical trial.
  • Sample:
  • Patients with schizophrenia, schizoaffective disorder or schizophreniform disorder (DSM-IV); aged 18-40 years; less than 15 years since first psychotic symptoms;admitted to a psychiatric department within the previous 21 days before screening; speaks fluently a Scandinavian language;treated with antipsychotics; written informed consent;no known allergy to trial agents;no substance dependence (DSM-IV);no warfarin currently or anamnestic indicators of impaired haemostasis. Planned: 200 patients. Actually included: 99 intent-to-treat patients.
  • Healthy controls: aged 18-40 years;no mental disorder (DSM-IV). Included: 20 persons.
  • Clinical assessments: Positive and Negative Syndrome Scale (PANSS) (main outcome variable). Self-report questionnaire. Adverse effects (UKURS). Neurocognitive assessment battery. Niacin skin flush test. General medical assessment.
  • Blood samples: RBC fatty acids, S-α-tocopherol, F2-isoprostane (kits), monocyte mRNA Phospholipase A22 (PLA2) Gr4a and 6a (RT-PCR method), RBC Gr4a PLA2 concentration (ELISA technique), a range of other biochemical tests.
  • Experimental treatment over 16 weeks: Ethyl-EPA 2 g/d or Placebo EPA and Vitamin E 364 mg/d + Vitamin C 1000 mg/d or Placebo Antioxidants
  • Statistics: Linear Mixed Model for longitudinal analyses of effects; other uni- and multivariate methods (SPSS 12.0 - PASW Statistics 18).
Being tested
Ethyl-eicosapentaenoic acid (EPA), Vitamins E + C, Etyl EPA (placebo), Vitamins E+C (placebo)
Keywords
Schizophrenia, Schizophreniform disorders, Schizoaffective disorder, Psychotic disorders, Randomized Controlled Trials, Longitudinal Studies, Fatty Acids, Omega-3, Eicosapentaenoic Acid, Vitamins, Antioxidants, Ascorbic Acid, Alpha-Tocopherol, Placebos, Antipsychotic Agents, Oxidative Stress, Fatty Acids, Unsaturated, Phospholipases, Niacin, Adverse effects, Delusions
Medical subject headings
Schizophrenia, Psychotic Disorders, Delusions, Hallucinations, Hypertriglyceridemia

What participants receive

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

  • Ethyl-eicosapentaenoic acid (EPA)Drug

    Also called Provided by Laxdale Ltd., Scotland, UK

    Capsules, 2 g per day for 16 weeks

  • Vitamins E + CDrug

    Also called CellaVie (Ferrosan AS, Denmark)

    RRR-alpha-tocopherol 392 mg + slow-release ascorbic acid 1000 mg per day, for 16 weeks

  • Etyl EPA (placebo)Other

    Also called Placebo EPA

    Paraffin oil. Capsules, each 0.5 g.

  • Vitamins E+C (placebo)Other

    Also called Placebo CellaVie, provided by Ferrosan AS, Denmark

    Tablets containing dicalciumphosphate

Study groups in NCT00419146
Study groupRoleWhat they receive
Ethyl EPA (active) and Vitamins E + C (active)ExperimentalNot described
Receives: Drug: Ethyl-eicosapentaenoic acid (EPA); Drug: Vitamins E + C
Ethyl EPA (active) and Vitamins E+C (placebo)ExperimentalNot described
Receives: Drug: Ethyl-eicosapentaenoic acid (EPA); Other: Vitamins E+C (placebo)
Ethyl EPA (placebo) and Vitamins E+C (active)ExperimentalNot described
Receives: Drug: Vitamins E + C; Other: Etyl EPA (placebo)
Ethyl EPA (placebo) and Vitamins E+C (placebo)Placebo comparatorNot described
Receives: Other: Vitamins E+C (placebo)

What is being measured

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

  1. Positive and Negative Syndrome Scale (PANSS)- Total

    Measured: Baseline - 8 weeks - 16 weeks

Secondary outcomes (42)
  1. PANSS Subscales Negative, Positive, General Psychopathology

    Measured: Weeks 0, 8, 16

  2. GLOBAL ASSESSMENT OF FUNCTIONING- Split Version (S-GAF)

    (S-GAF)Symptom Scale (S-GAF)Function Scale

    Measured: Weeks 0, 8, 16

  3. WONCA-COOP FUNCTIONAL HEALTH ASSESSMENT CHARTS

    5 scales

    Measured: Weeks 0, 8, 16

  4. NIACIN SKIN FLUSH TEST

    2 concentrations of niacin

    Measured: Weeks 0, 8, 16

  5. THE UKU SIDE EFFECT RATING SCALE (USERS)

    1. Sum of scores
    2. Patients with side effects

    Measured: Weeks 0,4,8,12,16

  6. SERIOUS ADVERSE EVENTS

    Measured: Weeks 0,4,8,12,16

  7. CONCOMITANT ANTIPSYCHOTIC MEDICATION

    Defined Daily Doses (ATC/WHO)

    Measured: Weeks 0,4,8,12,16

  8. Kimura Recurring Recognition Figures Test

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  9. Hopkins Verbal Learning Test.

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  10. Continuous Performance Test

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  11. Hopkins Verbal Learning Test

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  12. Paced Auditory Serial Addition Test

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  13. Stroop Test

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  14. Digit Span

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  15. The Letter - Number Task

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0,16

  16. Semantic and Category Fluency

    A sub-sample of patients. For logistic reasons, only some study sites could participate.

    Measured: Weeks 0, 16

  17. Body Mass Index

    Measured: Weeks 0, 16

  18. Blood pressure - systolic, diastolic

    Measured: Weeks 0, 16

  19. Heart rate

    Measured: Weeks 0, 16

  20. Albumin

    Serum

    Measured: Weeks 0, 16

  21. Urate

    Serum

    Measured: Weeks 0, 16

  22. Glucose

    Serum - fasting

    Measured: Weeks 0, 16

  23. Cholesterol

    Serum - fasting

    Measured: Weeks 0, 16

  24. Triglycerides

    Serum - fasting

    Measured: Weeks 0, 16

  25. Fatty acids in red blood cells

    The concentrations of long-chain (C14-18) and very long-chain (C20-24)fatty acids in erythrocytes were measured. Fasting condition.

    We selected DGLA, AA, EPA, DHA, total omega-3 Polyunsaturated Fatty Acids (PUFA), total omega-6 PUFA, PUFA and LCPUFA (long-chain PUFA) as outcome measures.

    Measured: Weeks 0, 16

  26. Alpha-tocopherol adjusted for [triglycerides]+[cholesterol].

    Serum

    Measured: Weeks 0, 16

  27. Total antioxidant status

    Serum

    Measured: Weeks 0, 16

  28. Malondialdehyde

    Also called "TBARS". Serum

    Measured: Weeks 0, 16

  29. F2-isoprostane (8-epiPGF2-alpha)

    Serum

    Measured: Weeks 0, 16

  30. Cytosolic PLA2 group IV in red blood cells(ELISA method)

    Omitted from stastical analyses because of problems with the pre-analytic procedure (treatment the of blood)

  31. Gene expression of mRNA for Phospholipase A2 (PLA2) groups IVa and VIa in monocytes.

    Whole blood

    Measured: Weeks 0, 16

  32. Mean Corpuscular Haemoglobin Concentration (MCHC)

    Whole blood

    Measured: Weeks 0, 16

  33. Mean Corpuscular Volume (MCV)

    Whole blood

    Measured: Weeks 0, 16

  34. C- Reactive Protein (CRP)

    Plasma

    Measured: Weeks 0, 16

  35. Haemoglobin

    Whole blood

    Measured: Weeks 0, 16

  36. Leukocytes

    Whole blood

    Measured: Weeks 0, 16

  37. Calcium

    Serum

    Measured: Weeks 0, 16

  38. Sodium

    Serum

    Measured: Weeks 0, 16

  39. Potassium

    Serum

    Measured: Weeks 0, 16

  40. Ferritin

    Serum

    Measured: Weeks 0,16

  41. Free thyroxin (T4)

    Serum

    Measured: Weeks 0, 16

  42. Thyroid Stimulating Hormone (TSH)

    Serum

    Measured: Weeks 0, 16

Timeline

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

  1. First posted8 Jan 2007 (estimated)
  2. Study startSep 2001
  3. Primary completionApr 2004
  4. Study completionApr 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 2/3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Factorial
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
99 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00419146
Sponsor's protocol ID
LA.01.07.0001
Other IDs
01T-106 (Stanley M.R.I.,USA)
Status last verified
Aug 2010
First submitted
5 Jan 2007
Last updated
4 Jan 2011
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 2/3 study testing Ethyl-eicosapentaenoic acid (EPA) and Vitamins E + C in people with Schizophrenia and Schizophreniform Disorders, run by University Hospital, Aker at 1 site in Norway.

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 6 inclusion and 3 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 Jan 2011. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Norway. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

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

What does this combined phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

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?

Positive and Negative Syndrome Scale (PANSS)- Total (time frame: Baseline - 8 weeks - 16 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 Jan 2011.

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