Major Depressive Disorder - Duloxetine - Fulfilling An Unmet Need?
Scope
Report Highlights
Reasons to Purchase
Table of Contents
- ABOUT DATAMONITOR HEALTHCARE - page 2
- About the CNS pharmaceutical analysis team - page 2
- CHAPTER 1 EXECUTIVE SUMMARY - page 3
- Scope of the analysis - page 3
- Datamonitor insight into the Major Depressive Disorder (MDD) market - page 5
- Individuals with milder forms of Major Depressive Disorder are unlikely to present to physicians. Across the seven major markets, only around a half of individuals are then accurately diagnosed at first presentation. - page 6
- The safety concerns surrounding antidepressants have been over-hyped and are not generally shared by physicians. - page 6
- Cymbalta (duloxetine) is at risk of being seen as a 'me-too' SNRI. Datamonitor's primary research suggests that by focusing on the treatment of painful physical symptoms of depression, Lilly might be missing the drug's more significant advantages. - page 7
- CHAPTER 2 INTRODUCTION AND SCOPE - page 15
- Coverage of the Stakeholder Insight survey - MDD - page 15
- Epidemiology - page 15
- Presentation and diagnosis - page 15
- Treatment of Major Depressive Disorder - page 15
- Coverage of the Stakeholder Insight survey - MDD - page 15
- CHAPTER 3 COUNTRY TREATMENT TREES - page 17
- Country treatment trees - page 17
- CHAPTER 4 EPIDEMIOLOGY AND PATIENT SEGMENTATION OF MDD - page 25
- Major Depressive Disorder: definitions and classification - page 25
- Diagnostic criteria of MDD - page 25
- DSM-IV - page 25
- ICD-10 - page 26
- Severity - page 27
- Dysthymic disorder is a milder form of depression - page 27
- Diagnostic criteria of MDD - page 25
- Etiology of Major Depressive Disorder - page 28
- Epidemiology of MDD - page 29
- Prevalence of MDD - page 29
- Segmentation of MDD - page 32
- Prevalence of MDD subtypes - page 32
- Comorbidities - page 33
- Anxiety - page 33
- Cancer and other serious illnesses can be accompanied by depression - page 34
- Heart disease - page 35
- Diabetes - page 35
- Neurodegenerative diseases - page 35
- Major Depressive Disorder: definitions and classification - page 25
- CHAPTER 5 PRESENTATION & REFERRAL - page 37
- Presentation rates for milder forms of MDD are low suggesting a significant untreated patient population may exist - page 37
- The PCP is the first contact for the majority of MDD patients - page 39
- PCPs opt to refer the patients as MDD severity increases - page 42
- Greater patient awareness may result in greater numbers seeking help - page 48
- Further use of internet-based screeners could increase presentation rates. - page 49
- CHAPTER 6 DIAGNOSIS OF MDD - page 51
- A number of diagnostic tools are available to ensure correct diagnosis on presentation - page 51
- WHO-Five Well-being Index provides a useful screener for the suspected depression - page 51
- The Major Depression Inventory is recommended for use in diagnosing MDD - page 52
- Clinical trials or epidemiological studies require more advanced diagnostic tools - page 52
- The Hamilton Rating Scale for Depression (HAM-D) is the gold standard used in clinical trials. - page 52
- The CIDI is favored for epidemiologic studies - page 53
- Diagnosis of MDD can be confused with bipolar disorder - page 53
- Diagnosis rate of MDD - page 54
- Interviewed physicians ask about the key symptoms when making a diagnosis of MDD. - page 55
- Painful physical symptoms are often associated with depression - page 58
- A number of diagnostic tools are available to ensure correct diagnosis on presentation - page 51
- CHAPTER 7 TREATMENT GUIDELINES - page 60
- Treatment guidelines aim to improve treatment outcomes but are underused outside of the US. - page 60
- Updates to the APA guideline cover recent issues. - page 63
- The NICE guideline includes cost-benefit assessment. - page 65
- Treatment guidelines aim to improve treatment outcomes but are underused outside of the US. - page 60
- CHAPTER 8 TREATMENTS AVAILABLE - page 67
- Choice of treatment modality is key to the treatment outcome - page 67
- Treatments already tried depend on the severity of depression - page 67
- Treatments chosen by interviewed physicians - page 72
- Drug class overview - page 77
- MAOIs and TCAs-effective but potentially unsafe. - page 77
- SSRIs avoid the problems of earlier antidepressants. - page 79
- Prozac (fluoxetine) - page 79
- Zoloft (sertraline) - page 80
- Celexa (citalopram) - page 80
- Lexapro (escitalopram) - page 81
- Luvox (fluvoxamine) - page 83
- Paxil (paroxetine) - page 83
- SNRIs have added a new layer of available treatment options - page 85
- Effexor (venlafaxine) - page 85
- Cymbalta (duloxetine) - page 86
- Other drugs have proven effective in treating MDD - page 90
- Wellbutrin (bupropion) - page 90
- Remeron (mirtazapine) - page 91
- Ixel (milnacipran) - page 92
- Edronax (reboxetine) - page 92
- Serzone (nefazodone) - page 93
- St.John's Wort (Hypericum perforatum) - page 93
- Non-pharmacological treatment overview - page 95
- Psychotherapy - page 95
- Cognitive behavioral therapy - page 95
- Electroconvulsive therapy (ECT) - page 98
- Psychotherapy - page 95
- Choice of treatment modality is key to the treatment outcome - page 67
- CHAPTER 9 PRESCRIBING TRENDS - page 100
- Choice of prescribed drug class - page 100
- TCAs and SSRIs are prescribed to the majority of patients - page 100
- Choice of prescribed drugs - page 105
- Drug choices by US physicians - page 106
- Key prescribing trends in the US - page 107
- Drug choices by physicians in Japan - page 108
- Key prescribing trends in Japan - page 109
- Drug choices by physicians in France - page 110
- Key prescribing trends in France - page 111
- Drug choices by physicians in Germany - page 112
- Key prescribing trends in Germany - page 113
- Drug choices by physicians in Italy - page 114
- Key prescribing trends in Italy - page 115
- Drug choices by physicians in Spain - page 116
- Key prescribing trends in Spain - page 117
- Drug choices by UK physicians - page 118
- Key prescribing trends in the UK - page 119
- Drug choices by US physicians - page 106
- First-line to second-line progression - page 121
- Second to third line progression - page 124
- Reasons for switching treatment - page 126
- Choice of prescribed drug class - page 100
- CHAPTER 10 FACTORS INFLUENCING PRESCRIBING TRENDS - page 127
- Choice of therapy - drug attributes - page 127
- Efficacy - page 128
- Side effects - page 130
- Sexual dysfunction - page 132
- Weight gain - page 135
- Sleep problems - page 137
- GI effects - page 139
- Safety profile - page 141
- Risk of suicide - page 142
- Cardiovascular (CV) risks - page 148
- Warnings given to patients - page 149
- Comorbid anxiety - page 150
- Ability to treat painful physical symptoms of depression - page 151
- Other factors - page 153
- Branded versus generic - page 154
- Choice of therapy - drug attributes - page 127
- CHAPTER 11 IMPROVING TREATMENT OUTCOMES - page 156
- Optimum duration of therapy - page 156
- Remission and relapse - page 161
- Proportion of patients achieving remission - page 161
- Time to achieve remission - page 163
- Proportion of patients who relapse during remission - page 165
- Unmet needs - page 168
- APPENDIX A - page 171
- Bibliography - page 171
- Websites - page 181
- APPENDIX B - page 183
- Physician research methodology - page 183
- Physician sample breakdown - page 183
- US - page 183
- Japan - page 184
- France - page 184
- Germany - page 185
- Spain - page 185
- Italy - page 186
- UK - page 186
- Physician questionnaire - page 187
- Section One Epidemiology and presentation - page 188
- Epidemiology - page 188
- Presentation and diagnosis - page 188
- Section Two Referral patterns - page 191
- Section Three Treatment - page 193
- Guidelines - page 193
- All treatments - page 193
- Pharmacological treatment - page 195
- Treatment of Mild Major Depressive Disorder - page 197
- Treatment of Moderate Major Depressive Disorder - page 201
- Treatment of Severe Major Depressive Disorder - page 204
- General - page 208
- Section Four Drug profiles - page 213
- Section One Epidemiology and presentation - page 188
- APPENDIX C - page 221
- About Datamonitor - page 221
- About Datamonitor Healthcare - page 221
- About the CNS analysis team - page 222
- Disclaimer - page 224
- About Datamonitor - page 221
- List of Tables
- Table 1: Total adult population in the seven major markets, (millions) - page 30
- Table 2: Adult MDD population estimates using 12-month prevalence, (millions) - page 31
- Table 3: The number of individuals suffering from each MDD severity, (millions) - page 33
- Table 4: Antidepressants approved for anxiety disorders in the US, EU and Japan - page 34
- Table 5: Search engine hits for "Depression". - page 50
- Table 6: Average time taken for MDD patients to achieve remission - page 163
- Table 7: Average time taken for MDD patients to relapse - page 167
- Table 8: US physician sample breakdown, 2005 - page 183
- Table 9: Japan physician sample breakdown, 2005 - page 184
- Table 10: France physician sample breakdown, 2005 - page 184
- Table 11: Germany physician sample breakdown, 2005 - page 185
- Table 12: Spain physician sample breakdown, 2005 - page 185
- Table 13: Italy physician sample breakdown, 2005 - page 186
- Table 14: UK physician sample breakdown, 2005 - page 186
- List of Figures
- Figure 1: The presentation, diagnosis and treatment of MDD in the US - page 18
- Figure 2: The presentation, diagnosis and treatment of MDD in Japan - page 19
- Figure 3: The presentation, diagnosis and treatment of MDD in France - page 20
- Figure 4: The presentation, diagnosis and treatment of MDD in Germany - page 21
- Figure 5: The presentation, diagnosis and treatment of MDD in Italy - page 22
- Figure 6: The presentation, diagnosis and treatment of MDD in Spain - page 23
- Figure 7: The presentation, diagnosis and treatment of MDD in the UK - page 24
- Figure 8: Interviewed physicians' estimate of MDD prevalence - page 29
- Figure 9: Physicians' perception of the severity of patients suffering from MDD across the seven major markets - page 32
- Figure 10: Proportion of patients with mild, moderate and severe MDD that present to a physician. - page 37
- Figure 11: Percentage of MDD patients who consult PCPs directly across the seven major markets - page 39
- Figure 12: Percentage of patients who consult psychiatrists directly across the seven major markets - page 40
- Figure 13: Healthcare professional types referring to psychiatrists across the seven major markets. - page 41
- Figure 14: Percentage of interviewed physician's patients referred to another healthcare professional. - page 43
- Figure 15: Referral of mild MDD patients to other healthcare professionals. - page 44
- Figure 16: Referral of moderate MDD patients to other healthcare professionals. - page 45
- Figure 17: Referral of severe MDD patients to other healthcare professionals. - page 46
- Figure 18: Proportion of patients with mild, moderate and severe MDD that receive an accurate diagnosis at first presentation - page 54
- Figure 19: Symptoms asked about by physicians prior to making a diagnosis of MDD - page 56
- Figure 20: Patients reporting painful physical symptoms associated with their depression - page 58
- Figure 21: Patients reporting painful physical symptoms associated with their depression to interviewed PCPs and psychiatrists - page 59
- Figure 22: Use of recognized practice guidelines according to interviewed physicians across the seven major markets - page 61
- Figure 23: Relative use of guidelines for the treatment of MDD by interviewed physicians in the US - page 62
- Figure 24: Treatment already tried when patients first present to psychiatrists - page 68
- Figure 25: Treatment already tried when mild MDD patients first present to psychiatrists - page 69
- Figure 26: Treatment already tried when moderate MDD patients first present to psychiatrists - page 70
- Figure 27: Treatment already tried when severe MDD patients first present to psychiatrists - page 71
- Figure 28: Types of treatment chosen for MDD patients by physicians - page 72
- Figure 29: APA guideline - Choice of treatment modalities for MDD - page 73
- Figure 30: Types of treatment chosen for mild MDD patients - page 74
- Figure 31: Types of treatment chosen for moderate MDD patients - page 75
- Figure 32: Types of treatment chosen for severe MDD patients - page 76
- Figure 33: Drug classes prescribed to MDD patients as monotherapy - page 100
- Figure 34: Drug classes prescribed to mild MDD patients - page 101
- Figure 35: Drug classes prescribed to moderate MDD patients - page 103
- Figure 36: Drug classes prescribed to severe MDD patients - page 104
- Figure 37: Drugs chosen for MDD by physicians in the US - page 106
- Figure 38: Drugs chosen for MDD by physicians in Japan - page 108
- Figure 39: Drugs chosen for MDD by physicians in France - page 110
- Figure 40: Drugs chosen for MDD by physicians in Germany - page 112
- Figure 41: Drugs chosen for MDD by physicians in Italy - page 114
- Figure 42: Drugs chosen for MDD by physicians in Spain - page 116
- Figure 43: Drugs chosen for MDD by physicians in the UK - page 118
- Figure 44: The proportion of MDD patients that progress from first to second-line therapy - page 121
- Figure 45: Time taken before physicians decide to progress MDD patients from first to second-line therapy - page 122
- Figure 46: The proportion of MDD patients that progress from second to third-line therapy - page 124
- Figure 47: Time taken before physicians decide to progress MDD patients from second to third-line therapy - page 125
- Figure 48: The reasons for switching patients from first-line treatment - page 126
- Figure 49: Influence on physicians' choice of therapy - page 127
- Figure 50: Overall efficacy rating according to interviewed physicians. - page 128
- Figure 51: Physicians' rating of overall side effect profile - page 130
- Figure 52: Influence of side effects on physicians' choice of therapy - page 131
- Figure 53: Physicians' concern about the occurrence of sexual dysfunction - page 132
- Figure 54: Physicians' concern about the occurrence of weight gain - page 135
- Figure 55: Physicians' concern about the occurrence of insomnia - page 137
- Figure 56: Physicians' concern about the occurrence of GI effects - page 139
- Figure 57: Rating of good safety profile according to interviewed physicians - page 141
- Figure 58: Physicians' concern about risk of suicidal ideation - page 142
- Figure 59: The black box warning added to all antidepressants in the US - page 143
- Figure 60: Physicians that have changed their prescribing habits as a result of reports suggesting a link between antidepressant use and increased risk of suicidality - page 145
- Figure 61: The warnings given by physicians to patients when initiating treatment with an antidepressant - page 149
- Figure 62: Ability to treat comorbid anxiety disorders according to interviewed physicians - page 150
- Figure 63: Ability to treat painful physical symptoms of depression according to interviewed physicians - page 151
- Figure 64: Lilly's Cymbalta website-www.depressionhurts.com - page 152
- Figure 65: The proportion of prescriptions for which physicians specify use of a generic product when branded version is also available - page 154
- Figure 66: Optimum time period for MDD patients on pharmacological therapy (weighted score) - page 156
- Figure 67: Optimum time period for mild MDD patients on pharmacological therapy - page 157
- Figure 68: Optimum time period for moderate MDD patients on pharmacological therapy - page 158
- Figure 69: Optimum time period for severe MDD patients on pharmacological therapy - page 159
- Figure 70: Patients achieving remission after one treatment cycle - page 161
- Figure 71: Weighted scores for the average time taken for MDD patients to achieve remission - page 164
- Figure 72: Patients who relapse during remission - page 165
- Figure 73: Unmet needs rated by interviewed physicians as the most important - page 168
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