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| [ Print-friendly version ] |
| HTA Study of Antidepressants for Depression in Dementia: A definitive multi-centre pragmatic randomised controlled double-blind trial of the clinical and cost effectiveness of mirtazapine and sertraline versus placebo for the treatment of depression in dementia presenting in secondary care |
| ISRCTN | ISRCTN88882979 |
| ClinicalTrials.gov identifier | |
| Public title | HTA Study of Antidepressants for Depression in Dementia: A definitive multi-centre pragmatic randomised controlled double-blind trial of the clinical and cost effectiveness of mirtazapine and sertraline versus placebo for the treatment of depression in dementia presenting in secondary care |
| Scientific title | |
| Acronym | HTA-SADD |
| Serial number at source | HTA 04/11/02, EudraCT Number: 2006-000105-38 |
| Study hypothesis |
Primary Objective
1. To determine the clinical and cost effectiveness of two classes of antidepressants for depression in dementia (compared with placebo) a. To determine whether a selective serotonin reuptake inhibitor (SSRI) (sertraline) is i) more clinically effective and ii) more cost effective than placebo in reducing Cornell depression score 13 weeks post randomisation b. To determine whether a noradrenergic and specific serotonergic antidepressant (NaSSA) (mirtazapine) is i) more clinically effective and ii) more cost effective than placebo in reducing Cornell Depression score 13 weeks post-randomisation Secondary Objectives 2. To investigate differences in the clinical and cost effectiveness, and in terms of adverse events, withdrawals from treatment and adherence to treatment between mirtazapine and sertraline for depression in dementia at 13 and 39 weeks post-randomisation 3. To investigate differences in the clinical and cost effectiveness of mirtazapine/sertraline and placebo on patient (e.g. quality of life, cognition) and family carer (e.g. carer burden, carer quality of life) outcomes at 13 and 39 weeks post-randomisation 4. To investigate the influence on clinical and cost effectiveness of clinical characteristics including: dementia severity, dementia type, depression type, depression severity, care arrangements, neuropsychiatric symptoms, and physical illness |
| Ethics approval | Not provided at time of registration. |
| Study design | A multi-centre double-blind placebo-controlled randomised controlled trial |
| Countries of recruitment | United Kingdom |
| Disease/condition/study domain | Depression in dementia |
| Participants - inclusion criteria |
We have designed this study as a pragmatic trial of effectiveness in routine clinical practice. We wish to minimise exclusions from the study in order to maximise the generalisability of the data generated.
The criteria for inclusion are set to be as close to clinical practice as possible. For this reason we do not specify the use of anything other than clinical diagnoses of dementia and depression since standardised instruments (other than the Mini-Mental State Examination [MMSE] as a measure of severity) are not used in routine practice. A detailed characterisation of cases using standardised tools will be completed at the research assessment. We will recruit those in whom a secondary care doctor makes at the point of referral to the RW: 1. A clinical diagnosis of mild to moderate probable or possible Alzheimer's Disease 2. A co-existing depressive illness likely to need treatment with antidepressants 3. Depression should have a duration of more than four weeks |
| Participants - exclusion criteria |
We wish to minimise exclusions. We will exclude from the trial those in whom a secondary care doctor finds at the point of referral to the RW are:
1. Currently taking antidepressants 2 Those with severe dementia (defined as MMSE >7) 3. The case is considered as being too critical to be randomised (e.g. because of suicide risk) 4. Displays absolute contraindications to one or more of the trial treatments 5. Not in another trial 6. Those where there is no identifiable family carer or other informant (e.g. a formal/professional carer who spends sufficient time with the person with dementia to be able to give an informed opinion) to give collateral information We will further exclude from the trial those in whom the RW finds have a Cornell score <8 at the point of randomisation. |
| Anticipated start date | 01/09/2006 |
| Anticipated end date | 30/11/2008 |
| Status of trial | Completed |
| Patient information material | |
| Target number of participants | 507 |
| Interventions |
The randomised interventions are:
1. Mirtazapine (a NaSSA) + sertraline placebo with normal clinical care 2. Sertraline (an SSRI) + mirtazapine placebo with normal clinical care 3. Mirtazapine placebo + sertraline placebo with normal clinical care Interventions will be available in 15 mg tables for mirtazapine and 50 mg capsules for sertraline. The protocol will therefore require each subject to take six tablets per day. This is a double dummy design. For the first two weeks of treatment, participants will receive: 1. Sertraline 50 mg plus a placebo mirtazapine tablet 2. Mirtazepine 15 mg plus a placebo sertraline tablet 3. A placebo sertraline tablet and a placebo mirtazapine tablet For the second two weeks, participants will receive: 1. Sertraline 100 mg (2 tablets) plus two placebo mirtazapine tablets 2. Mirtazapine 30 mg (2 tablets) plus two placebo sertraline tablets 3. Two placebo sertraline tablets and two placebo mirtazapine tablets From week 4 until the end of the trial (ten months in total), participants will receive: 1. Sertraline 150 mg (3 tablets) plus three placebo mirtazapine tablets 2. Mirtazapine 45 mg (3 tablets) plus three placebo sertraline tablets 3. Three placebo sertraline tablets and three placebo mirtazapine tablets Dose adjustments can be made by reducing back to 2 of each tablet daily or to 1 of each tablet daily in participants experiencing troublesome side effects. |
| Primary outcome measure(s) |
1. Depression in dementia - CSDD (Alexopoulos et al 1988)
2. Costs - Client Service Receipt Inventory (CSRI; Beecham et al 2001) |
| Secondary outcome measure(s) |
1. Disease specific quality of life - DEMQOL and DEMQOL-Proxy (Smith et al 2005)
2. Generic measure of quality of life - interview administered to carer (Coucill et al 2001) EQ-5D (EuroQoL Group 1990) 3. Withdrawal from treatment arm 4. Cognitive impairment - MMSE (Folstein et al 1975) 5. Medication adherence 6. Adverse events 7. Carer mental health - General Health Questionnaire - 12 (GHQ-12; Goldberg et al 1988) 8. Carer quality of life - SF-12 v2 (Ware et al 1996) 9. Carer burden - Zarit Carer Burden Scale (Zarit 1980) |
| Sources of funding | NIHR Health Technology Assessment Programme - HTA (UK) |
| Trial website | |
| Publications | |
| Contact name | Prof Sube Banerjee |
| Address |
Professor of Mental Health and Ageing
Unit PO26, Section of Mental Health and Ageing Health Services Research Department The Institute of Psychiatry King’s College London De Crespigny Park |
| City/town | London |
| Zip/Postcode | SE5 8AJ |
| Country | United Kingdom |
| Tel | +44 (0)20 7848 0012 |
| Fax | +44 0()20 7548 5056 |
| s.banerjee@iop.kcl.ac.uk | |
| Sponsor | Department of Health (UK) |
| Address |
Quarry House
Quarry Hill |
| City/town | Leeds |
| Zip/Postcode | LS2 7UE |
| Country | United Kingdom |
| Sheila.Greener@doh.gsi.gov.uk | |
| Sponsor website: | http://www.dh.gov.uk/en/index.htm |
| Date applied | 27/02/2006 |
| Last edited | 25/01/2008 |
| Date ISRCTN assigned | 02/03/2006 |
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