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| Name | Class |
|---|---|
| Massachusetts General Hospital | OTHER |
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This study is a 12-week, double-blind, placebo-controlled trial of L-methylfolate 15 mg/d supplementation in schizophrenia patients with mild or greater negative symptoms. L-methylfolate, a prescription medical food, is the activated form of folate required for conversion of homocysteine to methionine and hence is the optimal form of folate for supplementation, since it eliminates the need for activation by MTHFR. The purpose of this study is to examine the change in plasma L-methylfolate concentrations following a three-month trial of L-methylfolate 15 mg/d compared to placebo.
Blood levels of L-methylfolate and biological activity will be evaluated by examining changes in plasma homocysteine concentrations, serum methionine concentrations and changes in brain activation as measured by fMRI.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| L-methylfolate | Experimental | L-methylfolate 15mg (a medical food) |
|
| Placebo | Placebo Comparator | Placebo |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Placebo | Other | Placebo once a day for 12 weeks |
| |
| L-methylfolate |
| Measure | Description | Time Frame |
|---|---|---|
| Examine the change in plasma L-methylfolate concentrations following a three-month trial of L-methylfolate 15 mg/d compared to placebo. | Weeks 2, 8, and 12 |
| Measure | Description | Time Frame |
|---|---|---|
| Examine the change in brain activation in patients receiving L-methylfolate 15 mg/d versus placebo as measured by fMRI using Sternberg's Iterm Recognition Paradigm, as well as changes in cortical thickness and connectivity. | Week 12 | |
| Examine the relationship between MTHFR genotype, change in plasma homocysteine, and methionine concentration, and change in DLPC activation in subjects receiving L-methylfolate |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Joshua Roffman, MD | Massachusetts General Hospital Schizophrenia Program at Freedom Trail Clinic | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Massachusetts General Hospital (MGH) Schizophrenia Program at Freedom Trail Clinic | Boston | Massachusetts | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 28289280 | Derived | Roffman JL, Petruzzi LJ, Tanner AS, Brown HE, Eryilmaz H, Ho NF, Giegold M, Silverstein NJ, Bottiglieri T, Manoach DS, Smoller JW, Henderson DC, Goff DC. Biochemical, physiological and clinical effects of l-methylfolate in schizophrenia: a randomized controlled trial. Mol Psychiatry. 2018 Feb;23(2):316-322. doi: 10.1038/mp.2017.41. Epub 2017 Mar 14. |
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| ID | Term |
|---|---|
| D012559 | Schizophrenia |
| ID | Term |
|---|---|
| D019967 | Schizophrenia Spectrum and Other Psychotic Disorders |
| D001523 | Mental Disorders |
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| ID | Term |
|---|---|
| C005984 | 5-methyltetrahydrofolate |
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| Other |
L-methylfolate 15mg once a day for 12 weeks |
|
|
| Weeks 2, 8, and 12 |
| Examine the change in negative symptoms (SANS total score) after three months compared to placebo | Weeks 2, 8, and 12 |
| Examine the change in negative symptoms (SANS total score) in relation to change in plasma L-methylfolate levels | Weeks 2, 8, and 12 |
| Examine the change in MATRICS cognitive battery composite score after three months compared to placebo | Weeks 2, 8, and 12 |
| Examine the change in MATRICS cognitive battery composite score after three months in relation to change in plasma L-methylfolate concentration. | Weeks 2, 8, and 12 |
| Examine the change in psychotic symptoms as measured by the PANSS total and subscale scores after three months compared to placebo | Weeks 2, 8, and 12 |
| Examine the change in psychotic symptoms (PANSS score) in relation to change in plasma L-methylfolate concentration. | Weeks 2, 8, and 12 |
| Examine the change in plasma homocysteine and methionine concentrations following a three-month trial of L-methylfolate 15 mg/d compared to placebo. | Weeks 2, 8, and 12 |