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SchizophreniaPhase 2NCT00694707

Safety and Efficacy of Cariprazine (RGH-188) in the Acute Exacerbation of Schizophrenia

A Phase 2 study testing Cariprazine and Risperidone in people with Schizophrenia, run by Forest Laboratories at 65 sites in 5 countries.

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

This is a study to evaluate the safety, efficacy, and tolerability of cariprazine (RGH-188) relative to placebo in adult patients (18-60 years of age) with acute exacerbation of schizophrenia. Read more about this study

Who is it for?
Ages 18 to 60 years
Conditions the study is for
Schizophrenia
What is being tested?
Cariprazine and Risperidone
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
732 participants
Where
65 sitesin 5 countries
Study dates
30 Jun 2008to 31 Aug 2009
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 60 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • Male or female, 18 to 60 years of age.
  • Meets Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) criteria for schizophrenia (paranoid type, disorganized type, catatonic type, or undifferentiated type) based on a Structured Clinical Interview for DSM-IV (SCID).
  • Total Positive and Negative Syndrome Scale (PANSS) score ≥ 80 and ≤ 120.
  • Diagnosis of schizophrenia for at least 1 year.

Who cannot join

  • Abnormalities on physical examination or abnormal vital signs, electrocardiogram, or clinical laboratory values.
  • First episode of psychosis.

Trial locations and contacts

65 sites in 5 countries.

65 sites in 5 countries

United States18 sites
  • Forest Investigative Site

    Baltimore, Maryland, 21202

  • Forest Investigative Site

    Bradenton, Florida, 34208

  • Forest Investigative Site

    Bridgeton, Missouri, 63044

  • Forest Investigative Site

    Charleston, South Carolina, 29405

  • Forest Investigative Site

    Cincinnati, Ohio, 45219

  • Forest Investigative Site

    Costa Mesa, California, 92626

  • Forest Investigative Site

    Flowood, Mississippi, 39232

  • Forest Investigative Site

    Houston, Texas, 77008

  • Forest Investigative Site

    Houston, Texas, 77021

  • Forest Investigative Site

    Irving, Texas, 75062

  • Forest Investigative Site

    Kissimmee, Florida, 34741

  • Forest Investigative Site

    Lake Charles, Louisiana, 70601

  • Forest Investigative Site

    Long Beach, California, 90813

  • Forest Investigative Site

    Memphis, Tennessee, 28117

  • Forest Investigative Site

    Oceanside, California, 92056

  • Forest Investigative Site

    Paramount, California, 90723

  • Forest Investigative Site

    Riverside, California, 92506

  • Forest Investigative Site

    Washington D.C., District of Columbia, 20016

Other trials in United States

India16 sites
  • Forest Investigative Site

    Ahmedabad, Gujarat, 380013

  • Forest Investigative Site

    Ahmedabad, Gujarat, 380015

  • Forest Investigative Site

    Bangalore, Karna, 560010

  • Forest Investigative Site

    Bangalore, Karna, 560027

  • Forest Investigative Site

    Chennai, Tamil Nadu, 600003

  • Forest Investigative Site

    Chennai, Tamil Nadu, 600101

  • Forest Investigative Site

    Jaipur, Rajasthan, 302021

  • Forest Investigative Site

    Kanpur, Uttar Prad, 208005

  • Forest Investigative Site

    Mangalore, Karna, 574160

  • Forest Investigative Site

    Mangalore, Karna, 575001

  • Forest Investigative Site

    Manipal, Karna, 576104

  • Forest Investigative Site

    Mysore, Karna, 570004

  • Forest Investigative Site

    Pune, Mahara, 411004

  • Forest Investigative Site

    Tirupati, Tamil Nadu, 517507

  • Forest Investigative Site

    Vijaywada, ANDH PRAD, 520002

  • Forest Investigative Site

    Visakhapatnam, Andh Prad, 530017

Other trials in India

Russia15 sites
  • Forest Investigative Site

    Arkhangelsk, 163060

  • Forest Investigative Site

    Gatchina, 188357

  • Forest Investigative Site

    Kazan', 420012

  • Forest Investigative Site 1

    Moscow, 115522

  • Forest Investigative Site 2

    Moscow, 115522

  • Forest Investigative Site

    Moscow, 117152

  • Forest Investigative Site

    Nizhny Novgorod, 603155

  • Forest Investigative Site

    Saint Petersburg, 190005

  • Forest Investigative Site

    Saint Petersburg, 190121

  • Forest Investigative Site

    Saint Petersburg, 191119

  • Forest Investigative Site 2

    Saint Petersburg, 193019

  • Forest Investigative Site1

    Saint Petersburg, 193019

  • Forest Investigative Site

    Saint Petersburg, 193167

  • Forest Investigative Site

    Saint Petersburg, 197341

  • Forest Investigative Site

    Samara, 443016

Other trials in Russia

Ukraine11 sites
  • Forest Investigative Site

    Chernihiv, 14000

  • Forest Investigative Site

    Dnipropetrovsk, Dnipropetrovsk Oblast, 49616

  • Forest Investigative Site

    Donetsk, Donetsk Oblast, 83037

  • Forest Investigative Site

    Hlevakha, Kyiv Oblast, 08630

  • Forest Investigative Site

    Kharkiv, Kharkiv Oblast, 61068

  • Forest Investigative Site

    Kherson, Vil. Stepanivka, 73488

  • Forest Investigative Site

    Kiev, 02660

  • Forest Investigative Site

    Kyiv, Kyiv Oblast, 04080

  • Forest Investigative Site

    Kyiv, Kyiv Oblast, 04655

  • Forest Investigative Site

    Odesa, Odesa Oblast, 65006

  • Forest Investigative Site

    Ternopil, Ternopil Oblast, 46020

Other trials in Ukraine

Malaysia5 sites
  • Forest Investigative Site

    Ipoh, Perak, 30990

  • Forest Investigative Site

    Johor Bahru, Johor, 80100

  • Forest Investigative Site

    Kota Bharu, Kelantan, 15586

  • Forest Investigative Site

    Lembah Pantai, Kuala Lumpur, 59100

  • Forest Investigative Site

    Ulu Kinta, Perak, 31250

Other trials in Malaysia

About this study

Official title: Evaluation of the Safety and Efficacy of RGH-188 in the Acute Exacerbation of Schizophrenia

This is a study to evaluate the safety, efficacy, and tolerability of cariprazine (RGH-188) relative to placebo in adult patients (18-60 years of age) with acute exacerbation of schizophrenia.

Conditions
Schizophrenia
Being tested
Placebo, Cariprazine, Risperidone
Medical subject headings
Schizophrenia

What participants receive

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

  • PlaceboDrug

    Placebo was supplied in capsules.

  • CariprazineDrug

    Also called RGH-188

    Cariprazine was supplied in capsules

  • RisperidoneDrug

    Also called Risperdal

    Risperidone was supplied in capsules

Study groups in NCT00694707
Study groupRoleWhat they receive
PlaceboPlacebo comparatorParticipants received placebo orally once a day for 6 weeks.
Receives: Drug: Placebo
Cariprazine 1.5 mgExperimentalParticipants received cariprazine 1.5 mg orally once a day for 6 weeks.
Receives: Drug: Cariprazine
Cariprazine 3.0 mgExperimentalParticipants received cariprazine 3.0 mg orally once a day for 6 weeks.
Receives: Drug: Cariprazine
Cariprazine 4.5 mgExperimentalParticipants received cariprazine 4.5 mg orally once a day for 6 weeks.
Receives: Drug: Cariprazine
Risperidone 4.0 mgActive comparatorParticipants received risperidone 4.0 mg orally once a day for 6 weeks.
Receives: Drug: Risperidone

What is being measured

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

  1. Change From Baseline to Week 6 in the PANSS Total Score

    The Positive and Negative Syndrome Scale (PANSS) is a 30-item rating scale that assesses the positive and negative symptoms of individuals with schizophrenia. Responses to the 30 items are based on a structured clinical interview with the patient and on supporting clinical information obtained from family, hospital staff, or other reliable informants. Of the 30 psychiatric parameters measured by the scale, 7 assess positive symptoms (eg, delusions, grandiosity); 7 assess negative symptoms (eg, blunted affect, emotional withdrawal); and 16 assess general psychopathology (eg, poor attention, active social avoidance). Each item is scored on a 7-point scale (1 = absent, 2 = minimal, 3 = mild, 4 = moderate, 5 = moderately severe, 6 = severe, and 7 = extreme). The PANSS total score can range from 30 to 210. A higher score indicates worse symptoms. A negative change score indicates improvement.

    Measured: Baseline to Week 6

Secondary outcomes (1)
  1. Change From Baseline to Week 6 in the CGI-S Score

    The Clinical Global Impressions-Severity (CGI-S) scale is a 7-point scale that measures the overall severity of the illness compared with the severity of illness in other patients the Investigator has observed. The Investigator assesses the severity of the patient's illness as one of the following: 1 = Normal, not at all ill; 2 = Borderline ill; 3 = Mildly ill; 4 = Moderately ill; 5 = Markedly ill; 6 = Severely ill; 7 = Among the most extremely ill patients. The CGI-S score can range from 1 to 7. A higher score indicates more severe illness. A negative change score indicates improvement.

    Measured: Baseline to Week 6

Timeline

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

  1. First posted10 Jun 2008 (estimated)
  2. Study start30 Jun 2008
  3. Primary completion31 Aug 2009
  4. Study completion31 Aug 2009

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
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
732 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00694707
Sponsor's protocol ID
RGH-MD-16
Status last verified
May 2019
First submitted
6 Jun 2008
Last updated
12 Jun 2019
Data monitoring committee
No

Publications

  • Laszlovszky I, Barabassy A, Nemeth G. Cariprazine, A Broad-Spectrum Antipsychotic for the Treatment of Schizophrenia: Pharmacology, Efficacy, and Safety. Adv Ther. 2021 Jul;38(7):3652-3673. doi: 10.1007/s12325-021-01797-5. Epub 2021 Jun 6.

    PubMed 34091867
  • Barabassy A, Sebe B, Acsai K, Laszlovszky I, Szatmari B, Earley WR, Nemeth G. Safety and Tolerability of Cariprazine in Patients with Schizophrenia: A Pooled Analysis of Eight Phase II/III Studies. Neuropsychiatr Dis Treat. 2021 Apr 7;17:957-970. doi: 10.2147/NDT.S301225. eCollection 2021.

    PubMed 33854317
  • Marder S, Fleischhacker WW, Earley W, Lu K, Zhong Y, Nemeth G, Laszlovszky I, Szalai E, Durgam S. Efficacy of cariprazine across symptom domains in patients with acute exacerbation of schizophrenia: Pooled analyses from 3 phase II/III studies. Eur Neuropsychopharmacol. 2019 Jan;29(1):127-136. doi: 10.1016/j.euroneuro.2018.10.008. Epub 2018 Nov 20.

    PubMed 30470662
  • Earley W, Durgam S, Lu K, Laszlovszky I, Debelle M, Kane JM. Safety and tolerability of cariprazine in patients with acute exacerbation of schizophrenia: a pooled analysis of four phase II/III randomized, double-blind, placebo-controlled studies. Int Clin Psychopharmacol. 2017 Nov;32(6):319-328. doi: 10.1097/YIC.0000000000000187.

    PubMed 28692485
  • Citrome L, Durgam S, Lu K, Ferguson P, Laszlovszky I. The effect of cariprazine on hostility associated with schizophrenia: post hoc analyses from 3 randomized controlled trials. J Clin Psychiatry. 2016 Jan;77(1):109-15. doi: 10.4088/JCP.15m10192.

    PubMed 26845266
  • Durgam S, Starace A, Li D, Migliore R, Ruth A, Nemeth G, Laszlovszky I. An evaluation of the safety and efficacy of cariprazine in patients with acute exacerbation of schizophrenia: a phase II, randomized clinical trial. Schizophr Res. 2014 Feb;152(2-3):450-7. doi: 10.1016/j.schres.2013.11.041. Epub 2014 Jan 10.

    PubMed 24412468

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Cariprazine and Risperidone in people with Schizophrenia, run by Forest Laboratories at 65 sites in 5 countries.

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 4 inclusion and 2 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 12 Jun 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 65 sites in United States, India, Russia, Ukraine, Malaysia. 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 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.

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

Are results available for this study?

Yes. Results are posted in the registry (first posted 12 Jun 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Change From Baseline to Week 6 in the PANSS Total Score (time frame: Baseline to Week 6). 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 NCT00694707, which also lists 6 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 12 Jun 2019.

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