Depression and Traumatic Brain Injury
The Serotonin Transporter Gene Polymorphism and Major Depression Following Traumatic Brain Injury
1 other identifier
interventional
200
1 country
1
Brief Summary
Problem: Depressive symptoms are a common mental health problem following traumatic brain injury (TBI), occurring in up to 87% of patients. Depression following TBI has important consequences including poor functioning, lack of ability to return to work and family activities and prolonged TBI symptoms. The reason depression develops in some patients following TBI is unknown, making treatment difficult. One type of brain protein that shows genetic differences between people is called the serotonin transporter. People can be divided by whether or not they have a short protein (S allele) or a long protein (L allele) which influences the amount of serotonin transporter. Serotonin is a key brain chemical in depression in many mental/psychiatric illnesses. We think that the genetic differences in the serotonin transporter, that may not make a difference before TBI, may become important after TBI due to the nature of these injuries. Methods: A consecutive sample of 200 patients attending a TBI clinic who have sustained a mild-to-moderate TBI (American Congress of Rehabilitation Medicine criteria) within the last 2 months will be assessed for the presence of major depression (standard criteria, standardized interview). In phase I, blood samples from patients with mild-to-moderate TBI with depression and without depression will be checked for the presence of the 5-HTTPR genetic difference. This will allow us to study if the S allele is more likely in TBI patients with depression. In phase II, the patients with depression will be treated with the SSRI citalopram for 6 weeks. At 6 weeks, or upon discontinuation of citalopram, depression will be assessed again. This will allow us to study if depressed patients with the S allele respond more poorly to treatment. Persons assessing depression after treatment will not know the genetic makeup of each patient. Results Expected: If the serotonin transporter genetic difference confers susceptibility to depression following TBI, this will provide important information on what causes depression following TBI and document a risk factor for depression previously unstudied in this population. Also, as SSRI antidepressants are used to treat depression in TBI, this study may identify a subgroup of TBI patients in whom different medications should be given or additional medications are required.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_4 depression
Started Jul 2003
Longer than P75 for phase_4 depression
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
July 1, 2003
CompletedFirst Submitted
Initial submission to the registry
November 10, 2005
CompletedFirst Posted
Study publicly available on registry
November 15, 2005
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2005
CompletedStudy Completion
Last participant's last visit for all outcomes
May 1, 2010
CompletedApril 28, 2017
April 1, 2017
2.4 years
November 10, 2005
April 26, 2017
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
- Hamilton Depression Rating Scale (HAM-D)
Baseline, 6 weeks and 10 weeks (if applicable)
Secondary Outcomes (1)
Beck Depression Inventory (BDI), Rivermead Head Injury Follow-up Questionnaire (RHFQ), General Health Questionnaire (GHQ), Rivermead Post Concussion Disorder Questionnaire (RPDQ)
Baseline, 6 weeks and 10 weeks (if applicable)
Interventions
20(1 tablet)-50(2 1/2 tablets) mg/day for a period of 6 or 10 weeks
Eligibility Criteria
You may qualify if:
- age \>18 years
- gender: male or female
- TBI within the last two months
- mild to moderate TBI
- written, informed consent
- depressed group only: diagnosis of major depressive episode using the depression module of the Structured Clinical Interview for the DSM-IV (SCID-IV)
You may not qualify if:
- prior TBI or other focal brain disease (stroke, tumor)
- significant acute medical illness, including: drug overdose, severely disturbed liver, kidney, lung, or heart function, anemia, hypothyroidism, uncontrolled diabetes, Parkinson's disease, Huntington's chorea, progressive supranuclear paralysis, brain tumor, subdural hematoma, multiple sclerosis
- a brain CT scan revealing focal lesions that could not be interpreted as consistent with a TBI
- depression group only: contraindications to receiving treatment with citalopram
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Sunnybrook Health Sciences Centre
Toronto, Ontario, M4N 3M5, Canada
Related Publications (1)
Chan F, Lanctot KL, Feinstein A, Herrmann N, Strauss J, Sicard T, Kennedy JL, McCullagh S, Rapoport MJ. The serotonin transporter polymorphisms and major depression following traumatic brain injury. Brain Inj. 2008 Jun;22(6):471-9. doi: 10.1080/02699050802084886.
PMID: 18465388RESULT
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Krista L Lanctot, PhD
Sunnybrook Health Sciences Centre
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
Study Record Dates
First Submitted
November 10, 2005
First Posted
November 15, 2005
Study Start
July 1, 2003
Primary Completion
December 1, 2005
Study Completion
May 1, 2010
Last Updated
April 28, 2017
Record last verified: 2017-04