- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00963846
Huperzine for Cognitive and Functional Impairment in Schizophrenia
February 28, 2013 updated by: Scott Woods, MD, Biomedisyn Corporation
Huperzine is a natural plant product with procognitive properties in patients with Alzheimer's disease.
Cognitive difficulties hamper functioning in schizophrenia as well.
The present study will investigate whether huperzine improves cognition and functioning in patients with schizophrenia.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Actual)
56
Phase
- Phase 2
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Connecticut
-
New Haven, Connecticut, United States, 06519
- Yale University School of Medicine
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 55 years (ADULT)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Psychiatric diagnosis of schizophrenia according to SCID-IV.
- Currently treated with an antipsychotic medication.
- Has tolerated current antipsychotic treatment adequately.
- Has received an adequate trial of antipsychotic (a least 3 months of at least 300 mg/d CPZ equivalent).
- Has been receiving current psychotropic medication (s) for at least 8 weeks.
- Has been receiving current doses of psychotropic medication (s) for at least 4 weeks.
- Has been clinically stable for at least 12 weeks.
- No more than moderate severity (4 on the 1-7 scale) on any PANSS positive item.
- No more than 15 on the total of PANSS negative symptom items.
- Simpson-Angus Scale total score <7.
- Calgary Depression Scale for Schizophrenia total score <11.
- Submaximal performance on at least one of the following MATRICS components (letter-number span <20 OR HVLT total <31 OR CPT d-prime < 3.47).
- Score > 1 SD below age-, gender-, and education-adjusted normal control mean on MATRICS composite
- Good general health with no additional diseases expected to interfere with the studies.
- Fluent in English.
- Age 18-55.
- Adequate visual and auditory acuity to allow neuropsychological testing.
- Able to ingest oral medication.
- Not pregnant or lactating (women of childbearing potential must use a medically accepted method of birth control).
- Onset of schizophrenia prior to age 45.
- Available informant knowledgeable about subject's current functioning.
- Informed consent obtained from the subject prior to entry into the study.
Exclusion Criteria:
- Poor reading skills (raw score on MATRICS Wechsler Test of Adult Reading < 6).
- History of systemic cancer within 5 years.
- Use of any investigational drugs within 30 days prior to the screening visit.
- Use of cholinesterase inhibitors (galantamine, rivastigmine, donepezil, or tacrine) within 4 weeks of screening.
- Any clinically significant laboratory test abnormality on screening tests (hematology, chemistry, urinalysis, EKG). Clinically significant LFT elevations will be defined as >2x the upper limit of normal.
- Any significant neurologic disease including Alzheimer's disease, parkinson's disease, stroke, huntington's disease, normal pressure hydrocephalus, brain tumor, progressive supranuclear palsy, seizure disorder, subdural hematoma, multiple sclerosis, history of head injury with loss of consciousness for greater than one day within the past 5 years, or with residual deficits.
- Use of antihypertensive agents with frequent CNS side effects (e.g. clonidine, propranolol) within 4 weeks prior to the screening visit.
- Use of medications known to alter drug absorption or metabolism (e.g. probenecid, cimetidine, anti-fungal agents, erythromycin, rifampin, and anticonvulsants) within 4 weeks prior to the screening visit.
- History of peptic ulcer disease within 2 years.
- History of myocardial infarction, significant cardiovascular disease, or congestive heart failure within 6 months, history of hepatic or renal insufficiency, insulin-requiring diabetes or uncontrolled diabetes mellitus.
- Clinically significant cardiac arrhythmia, resting pulse less than 50.
- Present use or use in the 4 weeks prior to screening of anti-parkinsonian or anticholinergic medications (e.g. Sinemet, amantadine, bromocriptine, pergolide, selegiline, atropine, scopolamine, benztropine, trihexyphenidyl, hydroxyzine, diphenhydramine).
- Use of narcotic analgesics within 4 weeks prior to the screening visit.
- History of alcohol or substance abuse or dependence within the past 2 years (DSM-IV criteria).
- Receiving CYP 1A2 inhibitors such as certain SSRIs (all excluded in #4) cimetidine, methoxsalen, quinolones, furafylline, or moclobemide.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: QUADRUPLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
PLACEBO_COMPARATOR: placebo
|
matching pill placebo
|
EXPERIMENTAL: huperzine 0.2 mg BID
|
huperzine rising doses up to 0.2 mg BID
|
EXPERIMENTAL: huperzine 0.4 mg BID
|
huperzine rising doses up to 0.4 mg BID
|
EXPERIMENTAL: huperzine 0.8 mg BID
|
huperzine rising doses up to 0.8 mg BID
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
MATRICS battery
Time Frame: 26 weeks
|
26 weeks
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
UPSA
Time Frame: 26 weeks
|
26 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Scott W Woods, MD, Biomedisyn Corporation
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
March 1, 2010
Primary Completion (ACTUAL)
December 1, 2012
Study Completion (ACTUAL)
December 1, 2012
Study Registration Dates
First Submitted
August 10, 2009
First Submitted That Met QC Criteria
August 21, 2009
First Posted (ESTIMATE)
August 24, 2009
Study Record Updates
Last Update Posted (ESTIMATE)
March 1, 2013
Last Update Submitted That Met QC Criteria
February 28, 2013
Last Verified
February 1, 2013
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Mental Disorders
- Schizophrenia Spectrum and Other Psychotic Disorders
- Schizophrenia
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Cholinergic Agents
- Enzyme Inhibitors
- Neuroprotective Agents
- Protective Agents
- Cholinesterase Inhibitors
- Huperzine A
Other Study ID Numbers
- Biomedisyn 200901
- 3R41MH083436-01A1S1 (NIH)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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