Pharmacotherapy for the Prevention of Depression and Behavioral Side Effects in Hematopoietic Stem Cell Transplantation Patients

Abstract

Depression and decreased quality of life (QoL) develop in approximately 30% of nondepressed hematopoietic stem cell transplantation (HSCT) recipients early after transplantation. To potentially prevent this complication, we conducted a prospective randomized trial to assess whether prophylaxis of nondepressed HSCT patients with the antidepressant sertraline (SER) in addition to supportive psychotherapy starting at admission for transplantation decreases the risk of depression and improves QoL. The primary objective of the study was to evaluate whether there was an added benefit of SER versus placebo along with routine supportive psychotherapy on the development of depression in patients receiving HSCT. A secondary objective was to analyze the impact on patient-reported QoL and survival. The study was conducted at a single-site academic medical center. We randomized 123 nondepressed HSCT recipients (1:1) in a phase III double-blind study to receive SER starting at a dose of 50 mg/day, with possible dose escalations to 200 mg per day, or placebo beginning on admission for HSCT and continuing for 12 weeks. Supportive psychotherapy was provided for both groups. Depression (Beck Depression Inventory II [BDI-II]) and QoL (Functional Assessment of Cancer Therapy-Bone Marrow Transplantation [FACT-BMT]) were assessed prior to HSCT and then weekly to week 12 post-HSCT. A multivariable linear mixed-effects model was used to estimate the mean change in BDI-II scores as a function of elapsed time since baseline, treatment assignment, and their interaction. The same process was used to assess treatment effects on all QoL scores from the FACT-BMT assessment. A Kaplan-Meier curve was used to estimate the probability of survival for each group following initiation of treatment. A follow-up Cox proportional hazards model was used to estimate the mortality rate in the 2 groups. Our results do not indicate a benefit of SER in either a diminished risk of depression or improved QoL or survival outcomes. Based on our findings, we can only recommend early evaluation of HSCT recipients for depression, with antidepressant use reserved for patients with evidence of clinical depression, unless additional randomized trials can confirm the effects of early antidepressant therapy on mood and QoL in this vulnerable group. Future research in this area would be improved by systematic monitoring of medication adherence, identification of the optimal dose of SER (or other antidepressant), and inclusion of psychotherapy outcomes when relevant, the absence of which are limitations of this study.

Keywords: Depression; Hematopoietic stem cell transplantation; Pharmacotherapy.