The purpose of this study is to evaluate the efficacy of repetitive transcranial magnetic stimulation (rTMS) as a treatment for Veterans with an alcohol use disorder (AUD) to decrease the exceedingly high rate of relapse associated with this condition. At least 60% of those with AUD will experience a major relapse period within 6 months of treatment, irrespective of the intervention (psychosocial and/or pharmacological) employed. Consequently, the high prevalence of AUD and relapse following treatment in Veterans is associated with substantial resource allocation and costs for the DVA Health Care System. Current pharmacological and psychosocial interventions demonstrate only a moderate level of efficacy, which is reflected in the high rate of relapse in AUD. rTMS is a neurostimulation method that is at the forefront of innovative, non-invasive, and safe treatments for AUD, and the disorders that commonly co-occur with AUD. To reduce the high rate of relapse in Veterans with AUD, it is necessary for interventions to more effectively address the associated neurobiological dysfunction and salient co-occurring conditions. Accordingly, additional rigorously controlled studies are required to determine if rTMS is an effective treatment for Veterans with AUD. Participants will be recruited from VA Palo Alto Health Care System (VAPAHCS) residential substance abuse treatment clinics A double-blind randomized clinical trial with two groups: Active rTMS Treatment Group (Active rTMS) ? will receive four to five treatments (two treatments per day) each week for 2 weeks. Sham Control Treatment group (i.e., identical rTMS experimental procedure, but no active stimulation) will receive the same frequency and duration of rTMS sessions. The proposed rTMS protocol is consistent with the FDA approved treatment regimen employed for major depressive disorders at the VAPAHCS MIRECC. Magnetic resonance imaging (MR) will be completed prior to rTMS treatment and used to localize the left DLPFC in each participant to optimize rTMS for this region. Active and Sham rTMS groups will complete predictive measures [i.e., MR measures of anterior frontal glutamate:glutamine ratio (Glx), blood flow and tissue volume] prior to the inception of rTMS treatment (baseline) and other outcome measures (i.e., measures of craving, mood, anxiety) immediately pre- and post-completion of the 2 weeks of rTMS sessions. Measurement of baseline anterior frontal Glx, blood flow levels, and tissue volumes is necessary to establish potential biomarkers for prediction of rTMS treatment response, which is requisite for therapeutic optimization. For the 6 months following completion of active or sham rTMS treatment, participants will be contacted monthly, via telephone or in person, to complete a brief standardized measure of alcohol and substance use, as well as craving, to assess for changes in these variables over the previous 30 days. This project will deliver completely novel data on the efficacy of rTMS for Veterans with AUD during the first 6 months following treatment. Monitoring over the entire first 6 months following treatment is crucial, given relapse within the first 6 months of treatment is robustly related to poor psychosocial functioning over the ensuing 1-3 years. The ultimate goal of this proposal is provide treatment that more effectively promotes sustained abstinence in the Veteran with AUD, as extended abstinence is robustly associated with optimum biomedical, neuropsychological, psychiatric, and psychosocial recovery and functioning.

Public Health Relevance

At least 60% of Veterans with an alcohol use disorder will relapse within 6 months of treatment, irrespective of the type of treatment they receive. This indicates that currently available interventions for treating AUD in Veterans are not effective in helping them achieve long-term sobriety. Repetitive transcranial magnetic stimulation (rTMS) is a brain stimulation method that is at the forefront of innovative, non-invasive, and safe treatments for AUD. However, there have been no studies that specifically determined the effectiveness of rTMS treatment for Veterans with AUD. This project will evaluate the effectiveness of rTMS treatment in promoting long-term abstinence in Veterans suffering from AUD. Assisting Veterans in achieving long-term and sustained sobriety is critical because it is associated with the best medical, cognitive, psychiatric, and psychosocial recovery from AUD.

Agency
National Institute of Health (NIH)
Institute
Veterans Affairs (VA)
Type
Non-HHS Research Projects (I01)
Project #
1I01RX002303-01A2
Application #
9395197
Study Section
Psychological Health & Social Reintegration (RRD4)
Project Start
2017-12-01
Project End
2021-11-30
Budget Start
2017-12-01
Budget End
2018-11-30
Support Year
1
Fiscal Year
2018
Total Cost
Indirect Cost
Name
Veterans Admin Palo Alto Health Care Sys
Department
Type
DUNS #
046017455
City
Palo Alto
State
CA
Country
United States
Zip Code
94304