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    Clinical Data and Best Practices for Managing Depression in HCV-Infected Patients Treated With Peginterferon and Ribavirin

    Martin Schaefer, MD

    Associate Professor of Psychiatry

    Charité University of Medicine

    Berlin, Germany

    Head, Department of Psychiatry, Psychotherapy and Addiction Medicine

    Kliniken-Essen-Mitte

    Essen, Germany

    Summary of HCV Epidemiology and Treatment

    Epidemiology of HCV Infection

    * Nearly 170 million persons infected with HCV worldwide

    - Represents 2.5% of world population

    - Approximately 3-4 million new cases each year

    - 80% of new cases become chronic

    * HCV infection responsible for

    - Up to 76% of all HCC cases

    - 65% of liver transplantations in developed world

    * Cirrhosis develops in 20% to 30% over 20-30 years

    - 5% annual incidence of HCC

    Common Adverse Effects of HCV Infection

    Current HCV Standard of Care

    * Current standard of care for hepatitis C

    - Combination therapy with pegIFN plus RBV

    - Treatment length dependent on viral genotype and virologic response on therapy

    * Response rates vary according to genotype

    * SVR > 50% overall in clinical trials

    - 42% to 46% for genotype 1 infection

    - 76% to 82% for genotype 2/3 infection

    Relationship Among Depression, HCV, and

    HCV Treatment

    Depression More Common in HCV Patients vs General Population

    * Depression significantly more prevalent in chronically

    HCV-infected patients than in the general population[1]

    * Reported prevalence rates for MDD (according to

    DSM-IV)[2-4]

    - 6% to 10% for the general population

    - 24% to 70% for HCV-infected patients

    Variation Among Results of Studies Examining IFN-Related Depression

    * Systematic review analyzed 21 clinical trials of HCV-infected patients experiencing IFN-related depression

    - Definition of depression, treatment strategy, and duration differed among trials

    Worsened Depression and Fatigue Scores Following HCV Treatment

    * 32 HCV-infected patients randomized to no treatment or pegIFN alfa-2a/2b + RBV

    * Depression and fatigue evaluated at baseline and

    at ~ 12 weeks

    * HCV treatment associated with development of depressive symptoms, fatigue

    De Novo Depression in Patients Treated With PegIFN + RBV

    * 176 HCV-infected patients beginning pegIFN alfa-2a + RBV therapy evaluated for depressive and anxiety disorders at baseline and throughout treatment

    - Patients with baseline mood disorders excluded (n = 30)

    * High incidence of depression and anxiety syndromes during treatment

    Time Course of Mood Changes in Patients Treated With PegIFN + RBV

    * 17 patients without psychiatric diseases or drug addiction treated with pegIFN + RBV

    * Majority of depressive symptoms occurred during first 1-

    3 months of HCV therapy

    Risk of Suicide During Antiviral Therapy

    * Treatment with IFN + RBV reported to be associated with suicidal thoughts, suicide attempts, and successfully completed suicides

    - No robust estimates of suicide rates in IFN-exposed and untreated hepatitis C population

    - Most data from case reports

    * Relative risk associated with treatment is unknown

    * Specific risk factors for suicide during IFN/RBV therapy are unknown

    * Consider risks associated with antidepressant use

    Risk Factors for Depression During IFN-Based Therapy

    * Key risk factor for depression during HCV therapy is presence of depressive symptoms before or during treatment

    * Other factors that may be associated

    - History of drug abuse

    - HIV coinfection

    - Older age

    - Organic brain impairment

    - Genetic risk factors in the serotonergic system

    * Sex is risk factor for depression in the general population but is not risk factor for IFN-induced depression

    Depressive Symptoms and Viral Clearance at 24 Weeks

    * PegIFN alfa-2b 1.5 μg/kg/week + fixed-dose (800 mg/day) or weight-based (800-1400 mg/day) RBV

    * Higher baseline SDS depression scores associated with lower rates of HCV RNA negativity at Week 24 (P < .05)

    Antidepressant Use May Improve SVR Rates Following HCV Therapy

    * 39 patients received IFN alfa-2b + RBV for

    24-48 weeks

    - Assessed with BDI and SCID throughout treatment for development of major depression

    * SVR attained by 38.5% of patients who developed major depression vs only 11.5% of patients without depression

    * All patients who developed depression initiated antidepressants

    Pretreatment Assessment and Pharmacologic Treatment for HCV Treatment-Related Depression

    Approach to Managing Psychiatric Issues During HCV Treatment

    * Education, monitoring, and support

    - Information and psychoeducation before and during treatment

    - Monitoring of patients and past and current psychiatric issues

    - Assessment of current or previous substance abuse

    - Supportive psychotherapy and counseling

    - Regulation of sleep

    * Pharmaceutical strategies

    - Antidepressant treatment

    - Other treatments: antipsychotics, benzodiazepines (mood stabilizers, amphetamines, naltrexone, tryptophan, etc)

    - Antiviral therapy dose reduction, discontinuation if needed

    Depression Rating Scales

    * Depression scales can be used before and during treatment to assess baseline, changes in symptoms

    * Self-rating scales

    - BDI (Becks Depression Inventory)

    - Z-SDS (Zung Self-Rating Depression Scale)

    - HADS (Hospital Anxiety and Depression Scale)

    * Rating scales

    - HAMD (Hamilton Depression Scale)

    - MADRS (Montgomery-?sberg Depression Scale)

    How to Use Diagnostic Scales

    * BDI, Z-SDS, HADS, HAMD, or MADRS

    - Show changes in depressive symptoms over time

    - Try to quantify the severity of depressive symptoms

    * Diagnosis of a "major depression" must be confirmed by diagnostic criteria......(后略) ......