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Bipolar DisorderPhase 2IsradipineNCT01784666

Adjunctive Isradipine for the Treatment of Bipolar Depression

A Phase 2 study testing Isradipine in people with Bipolar Disorder, run by Massachusetts General Hospital at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This study investigates the medication isradipine, which is currently approved by the FDA to treat high blood pressure, in the treatment of depression in bipolar disorder. Isradipine or placebo (contains no active medication) will be used as an "add-on" to lithium, valproate, and/or atypical antipsychotics for… Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Bipolar Disorder
What is being tested?
Isradipine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
2 participants
Where
1 siteUnited States
Study dates
Feb 2013to Apr 2014
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 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age 18-65
  • written informed consent
  • meets Diagnostic and Statistical Manual-IV (DSM-IV) criteria (by Structured Clinical Interview for Diagnostic and Statistical Manual - IV -I/P (SCID)) for bipolar I disorder, current episode depressed
  • Montgomery-Asberg Depression Scale (MADRS) score of at least 20 (i.e., moderate depression) and no greater than 34 (i.e., severe depression) at screen and baseline visit
  • Young Mania Rating Scale (YMRS) score < 12 at screen and baseline visit
  • currently treated with a lithium preparation (carbonate or citrate) at stable dose for at least 4 wks with level >0.6 and <1.0; and/or valproate at stable dose for at least 4 wks at level >60 and <110; and/or other atypical antipsychotic at stable dose for at least 4 weeks (at least minimum FDA-labeled dose)
  • Caucasian by self-report - please see discussion below

Who cannot join

  • Psychotic features in the current episode, as assessed by YMRS item #8 > 6 [where treatment guidelines urge use of antipsychotics that may confound isradipine results]
  • felt by the study clinician to require inpatient hospitalization for adequate management (to include serious suicide or homicide risk, as assessed by evaluating clinician)
  • 3 or more failed pharmacologic interventions in the current major depressive episode, excluding lithium/valproate/other atypical antipsychotic [response rates for these subjects is likely to be extremely low and would require a substantially larger-scale study to identify treatment effects]
  • obsessive-compulsive disorder, or any diagnosis of a DSM-IV anxiety disorder where the anxiety disorder and not bipolar disorder is the primary focus of clinical attention
  • current substance use disorder other than nicotine, by SCID-I/P
  • a primary clinical diagnosis of a personality disorder, or comorbid diagnosis of antisocial or borderline personality disorder
Show all 16Show fewer
  • pregnant women or women of child bearing potential who are not using a medically accepted means of contraception (to include oral contraceptive or implant, condom, diaphragm, spermicide, intrauterine device, tubal ligation, or partner with vasectomy)
  • women who are breastfeeding
  • other unstable medical illness including cardiovascular, hepatic, renal, respiratory, endocrine, neurological, or hematological disease, based on review of medical history, physical examination, and screening laboratory tests (this will include any clinical or laboratory evidence of hypothyroidism; if maintained on thyroid medication must be euthyroid for at least 1 month before Visit 1)
  • history of hypertension or current treatment for hypertension
  • current use of isradipine or history of anaphylactic reaction or intolerance to isradipine or any component of the preparation
  • ECG abnormalities at entry: prolonged QTC interval or complete or incomplete bundle branch block
  • patients who have taken an investigational psychotropic drug within the last 3 months
  • patients receiving other excluded antipsychotics or antidepressants within 2 weeks prior to study entry
  • patients requiring continued treatment with excluded medications (see below).
  • Excluded medications: antidepressants, antipsychotics, and anticonvulsants (other than valproate), which could influence calcium signaling or impact mood; other calcium channel blockers; any other antihypertensive because of the risk of cause hypotension; any other drug known to interact with isradipine. Benzodiazepines or other sedative-hypnotic agents (e.g., zolpidem) may not be initiated after study entry; subjects requiring these agents will be removed from the study. Allowed: Sedative-hypnotic agents if dosage has been stable for 4 weeks prior to study entry; thyroid or estrogen replacement provided dosage has been stable for 3 months. Acceptable anticonvulsants include lamotrigine, valproate, gabapentin, topiramate, oxcarbazepine, carbamazepine.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

Other trials in United States

About this study

This study investigates the medication isradipine, which is currently approved by the FDA to treat high blood pressure, in the treatment of depression in bipolar disorder. Isradipine or placebo (contains no active medication) will be used as an "add-on" to lithium, valproate, and/or atypical antipsychotics for individuals currently experiencing a major depressive episode. Our hypothesis is that isradipine will be superior to placebo in improving depressive symptoms.

Read the detailed description

Primary Aim: To estimate the antidepressant efficacy of isradipine versus placebo as an adjunct to lithium, valproate, and/or other atypical antipsychotics among individuals with bipolar I disorder in a nonpsychotic major depressive episode.

Hypothesis: Isradipine will be superior to placebo in improvement of depressive symptoms assessed by the Montgomery-Asberg Depression Rating Scale (MADRS).

Being tested
Isradipine, Placebo
Keywords
Bipolar Disorder, Depression, Lithium, Valproate, Isradipine
Medical subject headings
Bipolar Disorder, Depression

What participants receive

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

  • IsradipineDrug

    The study uses the Sequential Parallel Comparison design (SPCD), with two 4-week phases: n=30 subjects are randomized 1:1 to isradipine versus placebo add-on for 4 weeks, with the placebo nonresponders re-randomized 1:1 for a further 4 weeks. The SPCD will allow us to pool data from both phases to estimate the isradipine treatment effect. Subjects who respond in phase 1, and all subjects who receive isradipine in phase 1, continue blinded treatment in phase 2 to preserve the blind, but only phase 1 results are analyzed.

  • PlaceboDrug

    Subjects (n=15) are randomized to placebo add-on for 4 weeks, with the nonresponders re-randomized 1:1 to isradipine vs placebo for a further 4 weeks. Subjects who respond in phase 1 continue blinded treatment in phase 2 to preserve the blind, but only phase 1 results are analyzed.

Study groups in NCT01784666
Study groupRoleWhat they receive
Isradipine-IsradipineExperimentalSubjects will receive isradipine in phase 1 (4 weeks) and phase 2 (4 weeks)
Receives: Drug: Isradipine
Placebo -> IsradipineExperimentalPlacebo non-responders after the 1st 4 weeks will be re-randomized 1:1 to placebo or isradipine for the next 4 weeks
Receives: Drug: Isradipine; Drug: Placebo
Placebo-PlaceboPlacebo comparatorPlacebo nonresponders for the 1st 4 weeks will be re-randomized 1:1 to placebo or isradipine for the subsequent 4 weeks
Receives: Drug: Placebo

What is being measured

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

  1. Change in MADRS (4 Weeks)

    Change in Montgomery-Asberg Depression Rating Scale (MADRS) in isradipine-treated epochs versus placebo-treated epochs.

    These scores represent total scores, and on the MADRS total scores range from 0-60. A higher score indicates increased depression severity.

    Measured: Baseline vs week 4 (and, for placebo nonresponders in 1st 4 weeks, week 8 vs week 4)

Timeline

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

  1. First posted6 Feb 2013 (estimated)
  2. Study startFeb 2013
  3. Primary completionApr 2014
  4. Study completionApr 2014

Why it stopped: Lack of Enrollment

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, Outcomes assessor
Enrolment
2 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01784666
Sponsor's protocol ID
2012-P-002449/1
Acronym
Isradipine
Status last verified
Apr 2017
First submitted
4 Feb 2013
Last updated
20 Apr 2017
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Isradipine in people with Bipolar Disorder, run by Massachusetts General Hospital at 1 site in United States.

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 7 inclusion and 16 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: stopped early, as of the sponsor's last update on 20 Apr 2017. 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 United States. 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 20 Apr 2017). 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 in MADRS (4 Weeks) (time frame: Baseline vs week 4 (and, for placebo nonresponders in 1st 4 weeks, week 8 vs week 4)). 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 20 Apr 2017.

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Isradipine Clinical Trial NCT01784666 | AzTrials