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| Name | Class |
|---|---|
| Department of Health, Executive Yuan, R.O.C. (Taiwan) | OTHER_GOV |
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Pharmacotherapy for schizophrenia has limitations such as residual positive and negative symptoms, cognitive deficits and intolerable side effects. Refractory schizophrenia (particularly clozapine-resistant) is still a difficult clinical issue at present. According to the N-methyl-D-aspartate (NMDA) hypothesis, adjuvant NMDA-enhancing agents may have therapeutic benefit. DAAOI-1, a D-amino acid oxidase (DAAO) inhibitor, is a NMDA-enhancing agents.
The aim of this project is to examine the effectiveness and safety of DAAOI-1 adjuvant treatment for clozapine-resistant refractory schizophrenia patients in a randomized, double-blind, placebo - controlled trial.
Pharmacotherapy for schizophrenia has limitations such as residual positive and negative symptoms, cognitive deficits and intolerable side effects. Refractory schizophrenia (particularly clozapine-resistant) is still a difficult clinical issue at present. Among schizophrenia patients, around 20-25%are treatment-resistant. According to the N-methyl-D-aspartate (NMDA) hypothesis, many clinical trials on NMDA-enhancing agents were studied. Adjuvant NMDA-enhancing agents, including glycine, D-amino acids (D-serine, D-alanine), and sarcosine (a glycine transporter I inhibitor), revealed beneficial but limited efficacy for positive and negative symptoms. The investigators recently started to study the potential of DAAOI-1, a D-amino acid oxidase (DAAO) inhibitor which can elevate synaptic concentration of D-amino acids.
The aims of this project is to examine the effectiveness and safety of DAAOI-1 adjuvant treatment for clozapine-resistant refractory schizophrenia patients in a randomized, double-blind, placebo - controlled trial.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| BE 1 | Experimental | DAAOI-1 1g |
|
| BE 2 | Experimental | DAAOI-1 2g |
|
| starch pill | Placebo Comparator |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| DAAOI-1 | Drug | DAAOI-1 1g |
| |
| DAAOI-1 |
| Measure | Description | Time Frame |
|---|---|---|
| The severity of psychiatric symptoms | The severity of psychiatric symptoms will be assessed by:
| week 0, 2, 4, 6 |
| Measure | Description | Time Frame |
|---|---|---|
| PANSS subscales | score changes | week 0,2,4,6 |
| Hamilton Depression Rating Scale (HAMD) | Week 0,2,4, 6 | |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Psychiatry, China Medical University Hospital | Taichung | Taiwan |
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| ID | Term |
|---|---|
| D012559 | Schizophrenia |
| ID | Term |
|---|---|
| D019967 | Schizophrenia Spectrum and Other Psychotic Disorders |
| D001523 | Mental Disorders |
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| Drug |
DAAOI-1 2g |
|
| placebo | Drug | starch pill |
|
| Cognitive function |
7 domains of Measurement and Treatment Research to Improve Cognition in Schizophrenia" [MATRICS] |
| week 0, 6 |