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Original Article
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Volume 354:1243-1252 March 23, 2006 Number 12
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Medication Augmentation after the Failure of SSRIs for Depression
Madhukar H. Trivedi, M.D., Maurizio Fava, M.D., Stephen R. Wisniewski, Ph.D., Michael E. Thase, M.D., Frederick Quitkin, M.D., Diane Warden, Ph.D., M.B.A., Louise Ritz, M.B.A., Andrew A. Nierenberg, M.D., Barry D. Lebowitz, Ph.D., Melanie M. Biggs, Ph.D., James F. Luther, M.A., Kathy Shores-Wilson, Ph.D., A. John Rush, M.D., for the STAR*D Study Team

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ABSTRACT

Background Although clinicians frequently add a second medication to an initial, ineffective antidepressant drug, no randomized controlled trial has compared the efficacy of this approach.

Methods We randomly assigned 565 adult outpatients who had nonpsychotic major depressive disorder without remission despite a mean of 11.9 weeks of citalopram therapy (mean final dose, 55 mg per day) to receive sustained-release bupropion (at a dose of up to 400 mg per day) as augmentation and 286 to receive buspirone (at a dose of up to 60 mg per day) as augmentation. The primary outcome of remission of symptoms was defined as a score of 7 or less on the 17-item Hamilton Rating Scale for Depression (HRSD-17) at the end of this study; scores were obtained over the telephone by raters blinded to treatment assignment. The 16-item Quick Inventory of Depressive Symptomatology — Self-Report (QIDS-SR-16) was used to determine the secondary outcomes of remission (defined as a score of less than 6 at the end of this study) and response (a reduction in baseline scores of 50 percent or more).

Results The sustained-release bupropion group and the buspirone group had similar rates of HRSD-17 remission (29.7 percent and 30.1 percent, respectively), QIDS-SR-16 remission (39.0 percent and 32.9 percent), and QIDS-SR-16 response (31.8 percent and 26.9 percent). Sustained-release bupropion, however, was associated with a greater reduction (from baseline to the end of this study) in QIDS-SR-16 scores than was buspirone (25.3 percent vs. 17.1 percent, P<0.04), a lower QIDS-SR-16 score at the end of this study (8.0 vs. 9.1, P<0.02), and a lower dropout rate due to intolerance (12.5 percent vs. 20.6 percent, P<0.009).

Conclusions Augmentation of citalopram with either sustained-release bupropion or buspirone appears to be useful in actual clinical settings. Augmentation with sustained-release bupropion does have certain advantages, including a greater reduction in the number and severity of symptoms and fewer side effects and adverse events. (ClinicalTrials.gov number, NCT00021528 [ClinicalTrials.gov] .)


Source Information

From the Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas (M.H.T., D.W., M.M.B., K.S.-W., A.J.R.); the Clinical Psychopharmacology Unit, Massachusetts General Hospital, Boston (M.F., A.A.N.); the Epidemiology Data Center, Graduate School of Public Health, University of Pittsburgh (S.R.W., J.F.L.), and the Department of Psychiatry, University of Pittsburgh School of Medicine (M.E.T.) — both in Pittsburgh; the New York State Psychiatric Institute and the Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York (F.Q.); and the National Institute of Mental Health, Bethesda, Md. (L.R., B.D.L.).

Address reprint requests to Dr. Trivedi at the Mood Disorder Program and Clinic, Department of Psychiatry, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9119, or at madhukar.trivedi{at}utsouthwestern.edu.

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Related Letters:

Depression — Augmentation or Switch after Initial SSRI Treatment
Sussman N., Williams S. C., Tebartz van Elst L., Ebert D., Hesslinger B., Rush A. J., Trivedi M. H., Wisniewski S. R., the STAR*D trial investigators , Rubinow D. R.
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N Engl J Med 2006; 354:2611-2613, Jun 15, 2006. Correspondence

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