About this trial
This is a double blind adjunctive randomized controlled trial for schizophrenia using cromoglicate.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Written informed consent.
Both genders, ages 18-60 years
Schizophrenia / schizoaffective disorder (DSM V).
Treated with the same APD for at least 60 days; Stable dose of APD for > 1 month, continued throughout the study.
Disqualifiers
No illicit substance use in last 30 days/no dependence in 6 months with the exception of methadone treatment for opioid withdrawal.
History or current medical /neurological illnesses that may lead to an unstable course with the exception of epilepsy which is well-controlled on an antiepileptic medication for at least 6 months.
Pregnancy.
History of immune disorders, HIV infection, or receiving immune-suppressants or immuno-modulators, e.g., steroids.
Trial design
Crossover
Treatments tested in this trial
Cromoglycate
DrugCromoglycate will be administered intranasally (nasal spray) (1 spray each nostril 4 times a day, 5.2 mg/spray
Placebo
DrugNormal saline nasal spray will be administered intranasally (nasal spray) (1 spray each nostril 4 times a day, 5.2 mg/spray)
Treatment groups
Trial outcomes
Primary outcomes
Improvement in positive symptoms
Clinical Severity as determined by the Positive and Negative Syndrome Scale (PANSS) positive symptom subscale. The PANSS is a standardized, clinical interview that rates the presence and severity of positive and negative symptoms, as well as general psychopathology for people with schizophrenia within the past week. Symptom severity for each item is rated according to which anchoring points in the 7-point scale (1 = absent; 7 = extreme) best describe the presentation of the symptom. 7 Items, (minimum score = 7, maximum score = 49)
Secondary outcomes
Total Symptoms
Clinical Severity as determined by the Positive and Negative Syndrome Scale (PANSS) positive symptom subscale. The PANSS is a standardized, clinical interview that rates the presence and severity of positive and negative symptoms, as well as general psychopathology for people with schizophrenia within the past week. Symptom severity for each item is rated according to which anchoring points in the 7-point scale (1 = absent; 7 = extreme) best describe the presentation of the symptom. 30 Items, (minimum score = 7, maximum score = 210)
Negative Symptoms
Clinical Severity as determined by the Positive and Negative Syndrome Scale (PANSS) positive symptom subscale. The PANSS is a standardized, clinical interview that rates the presence and severity of positive and negative symptoms, as well as general psychopathology for people with schizophrenia within the past week. Symptom severity for each item is rated according to which anchoring points in the 7-point scale (1 = absent; 7 = extreme) best describe the presentation of the symptom. 7 Items, (minimum score = 7, maximum score = 49)
Cognition
As measured by the Penn Computerized Neurocognitive Battery (CNB)
Sheehan's disability scale (SDS)
The SDS is a brief, 5-item self-report tool that assesses functional impairment in work/school, social life, and family life. Total score 0-30 (0 unimpaired, 30 highly impaired)
Other outcomes
Total Positive and Negative Syndrome Scale (PANSS)
Clinical Severity as determined by the Positive and Negative Syndrome Scale (PANSS) positive symptom subscale. The PANSS is a standardized, clinical interview that rates the presence and severity of positive and negative symptoms, as well as general psychopathology for people with schizophrenia within the past week. Symptom severity for each item is rated according to which anchoring points in the 7-point scale (1 = absent; 7 = extreme) best describe the presentation of the symptom. 30 Items, (minimum score = 7, maximum score = 210)
Penn Computerized Neurocognitive Battery (CNB)
Developed in the Brain Behavior Lab at Penn, the CNB is a series of computerized tests that measure accuracy and speed of performance in major domains of cognition, including social-cognition. Battery measures the executive functions of abstraction and mental flexibility, attention, and working memory, episodic memory for words, faces and figures, intellectual functioning including verbal and nonverbal reasoning and spatial orientation, facial emotion processing and sensorimotor and motor speed. The participant completes this test on the computer with oversight by a research team member.
Sheehan's disability scale (SDS)
The SDS is a brief, 5-item self-report tool that assesses functional impairment in work/school, social life, and family life. Total score 0-30 (0 unimpaired, 30 highly impaired)
Global Assessment of Function (GAF)
The Global Assessment of Functioning, or GAF, scale is used to rate how serious a mental illness may be. It measures how much a person's symptoms affect his or her day-to-day life on a scale of 0 to 100.
Sponsors and contacts
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Vishwajit Nimgaonkar, MD PhD
Lead sponsor
University of Pittsburgh
Sponsor institution
Stanley Medical Research Institute
Collaborator