CAT

CAT Assignment Worksheet                                                                              Name Daniel DeMarco

Based on PICO Question: Rotation 7 (Psychiatry), Week 1

Brief description of patient problem/setting (summarize the case very briefly)

I had my Psychiatry rotation at Mindful Urgent Care in West Hempstead. One of the most common diagnoses made and treated is Major Depressive Disorder (MDD). The patient that prompted this clinical question was a 57yo female returning for follow-up for MDD. She was being treated with Cymbalta (Duloxetine) but had friends that were using the medication Trintellix (Vortioxetine). The patient told us that her friends said that the medication had fewer side effects than other antidepressants (including sexual side effects and effects on cognition). She asked whether Trintellix (Vortioxetine) is as effective as Cymbalta (Duloxetine) in the treatment of MDD. To investigate the impact of various interventions on Major Depressive Disorder (MDD), several tools are utilized to quantify symptom improvement including: Change from baseline Montgomery Asberg Depression Rating Scale Total Score (MADRS) and remission including: a Montgomery Asberg Depression Rating Scale Total Score < or = 10, < or = 7 Points on 17-Item HAM-D, < or = 8 Points on Longer Versions of HAM-D, “Not Ill or Borderline Mentally Ill” Scores 1 or 2 on Clinical Global Impression – Severity (CGI-S). I was unfamiliar with Trintellix (Vortioxetine), and so I was interested in researching the medication and the evidence for its use.

Search Question: Clearly state the question (including outcomes or criteria to be tracked)

In adult patients with Major Depressive Disorder (MDD), how does Trintellix (Vortioxetine) compared to Cymbalta (Duloxetine) affect symptom improvement and remission rates?

Question Type: What kind of question is this? (boxes now checkable in Word)

☐Prevalence                       ☐Screening             ☐Diagnosis

 

☐Prognosis                          ☒Treatment              ☐Harms

Assuming that the highest level of evidence to answer your question will be meta-analysis or systematic review, what other types of study might you include if these are not available (or if there is a much more current study of another type)? Please explain your choices.

Other types of studies that may be included are Randomized Controlled Trials. RCTs are just beneath systematic reviews/meta-analyses on the evidence-based medicine (EBM) pyramid. RCTs in which adult patients with Major Depressive Disorder (MDD) are divided into treatment groups consisting of Trintellix (Vortioxetine) versus active-reference groups treated with Cymbalta (Duloxetine) versus placebo would be particularly ideal. The outcome measured would be symptom improvement and remission rates as previously defined.

PICO search terms:

P I C O
Adult Patients Trintellix Cymbalta Symptom Improvement
Major Depressive Disorders Vortioxetine Duloxetine Remission Rates
MDD Lu AA21004   Change from baseline Montgomery Asberg Depression Rating Scale (MADRS) Total Score
Unipolar Major Depression     Montgomery Asberg Depression Rating Scale (MADRS) < or = 10
      < or = 7 Points on 17-Item HAM-D, < or = 8 Points on Longer Versions of HAM-D
      “Not Ill or Borderline Mentally Ill” Scores 1 or 2 on Clinical Global Impression – Severity (CGI-S)

 

Search tools and strategy used:

Please indicate what data bases/tools you used, provide a list of the terms you searched together in each tool, and how many articles were returned using those terms and filters.

Database Terms Filter and Articles Returned
PubMed Vortioxetine Duloxetine N/A = 60

+ Clinical Trial, Review, Last 10 Years, Humans, English = 37

Six articles selected

Scopus Vortioxetine Duloxetine Major Depressive Disorder N/A = 132

+ Article, Review, Last 5 Years = 96

One article selected

Science Direct Vortioxetine Duloxetine Major Depressive Disorder N/A: 203

+ Review Article, Research Articles = 117

No articles selected

TRIP Database P: Major Depressive Disorder

I: Vortioxetine

C: Duloxetine

O: [Blank]

N/A: 6

No articles selected

Cochrane Library Vortioxetine Major Depressive Disorder N/A: 1

One article selected

JAMA Vortioxetine Major Depressive Disorder N/A: 3

No articles selected

NEJM Vortioxetine Major Depressive Disorder N/A: 2

No articles selected

Google Scholar Vortioxetine Duloxetine Major Depressive Disorder N/A: 1,580

+ Since 2015, – Include Citations, Include Patents = 1,140 (But only searched first 3 pages or 30 items)

Sorted by Relevance

Two articles selected

Explain how you narrow your choices to the few selected articles.

Results found: 315

Initial Selection: 10

Initially when scanning the databases, a total of 10 articles were considered for inclusion to answer this clinical question. These articles were selected because they investigated the population/patient, intervention, control, and outcomes I was interested in. When scanning the databases, I looked first at the titles of the articles and then the abstract to ensure that they were pertinent. As occurs with any database search, a lot of articles are returned that are not directly related to the question you are interested in, so I did not include those. These 10 articles constituted the evidence I could find related to this clinical question (that were published within 10 years). My goal was to utilize the highest quality evidence from the pool of the 10 initially selected sources. 7 articles were selected for the CAT Outline. From the 7 articles, 5 were then chosen for the CAT Draft. These 5 articles, listed below, were selected as they represented the highest quality evidence of the 7.

Identify at least 5 articles (or other appropriate reputable sources) that answer your specific question with the highest available level of evidence (you will probably need to look at more than 5 articles to get the 5 most focused and highest level articles to address your question). Please make sure that they are Medline indexed.

Please post the citation and abstract for each article (to include the journal and authors’ names and date).

Article 1

 

CITATON Koesters M, Ostuzzi G, et al. Vortioxetine for depression in adults. Cochrane Database Syst Rev. 2017 Jul 5;7:CD011520. doi: 10.1002/14651858.CD011520.pub2.
ABSTRACT

BACKGROUND:

Major depressive disorder is a common mental disorder affecting a person’s mind, behaviour and body. It is expressed as a variety of symptoms and is associated with substantial impairment. Despite a range of pharmacological and non-pharmacological treatment options, there is still room for improvement of the pharmacological treatment of depression in terms of efficacy and tolerability. The latest available antidepressant is vortioxetine. It is assumed that vortioxetine‘s antidepressant action is related to a direct modulation of serotonergic receptor activity and inhibition of the serotonin transporter. The mechanism of action is not fully understood, but it is claimed to be novel. Vortioxetine was placed in the category of “Other” antidepressants and may therefore provide an alternative to existing antidepressant drugs.

OBJECTIVES:

To assess the efficacy and acceptability of vortioxetine compared with placebo and other antidepressant drugs in the treatment of acute depression in adults.

SEARCH METHODS:

We searched Cochrane’s Depression, Anxiety and Neurosis Review Group’s Specialised Register to May 2016 without applying any restrictions to date, language or publication status. We checked reference lists of relevant studies and reviews, regulatory agency reports and trial databases.

SELECTION CRITERIA:

We included randomised controlled trials comparing the efficacy, tolerability, or both of vortioxetine versus placebo or any other antidepressant agent in the treatment of acute depression in adults.

DATA COLLECTION AND ANALYSIS:

Two review authors independently selected the studies and extracted data. We extracted data on study characteristics, participant characteristics, intervention details and outcome measures in terms of efficacy, acceptability and tolerability. We analysed intention-to-treat (ITT) data only and used risk ratios (RR) as effect sizes for dichotomous data and mean differences (MD) for continuous data with 95% confidence intervals (CI). Meta-analyses used random-effects models.

MAIN RESULTS:

We included 15 studies (7746 participants) in this review. Seven studies were placebo controlled; eight studies compared vortioxetine to serotonin-norepinephrine reuptake inhibitors (SNRIs). We were unable to identify any study that compared vortioxetine to antidepressant drugs from other classes, such as selective serotonin reuptake inhibitors (SSRIs).Vortioxetine may be more effective than placebo across the three efficacy outcomes: response (Mantel-Haenszel RR 1.35, 95% CI 1.22 to 1.49; 14 studies, 6220 participants), remission (RR 1.32, 95% CI 1.15 to 1.53; 14 studies, 6220 participants) and depressive symptoms measured using the Montgomery-Åsberg Depression Scale (MADRS) (score range: 0 to 34; higher score means worse outcome: MD -2.94, 95% CI -4.07 to -1.80; 14 studies, 5566 participants). The quality of the evidence was low for response and remission and very low for depressive symptoms. We found no evidence of a difference in total dropout rates (RR 1.05, 95% CI 0.93 to 1.19; 14 studies, 6220 participants). More participants discontinued vortioxetine than placebo because of adverse effects (RR 1.41, 95% CI 1.09 to 1.81; 14 studies, 6220 participants) but fewer discontinued due to inefficacy (RR 0.56, 95% CI 0.34 to 0.90, P = 0.02; 14 studies, 6220 participants). The quality of the evidence for dropouts was moderate.The subgroup and sensitivity analyses did not reveal factors that significantly influenced the results. In comparison with other antidepressants, very low-quality evidence from eight studies showed no clinically significant difference between vortioxetine and SNRIs as a class for response (RR 0.91, 95% CI 0.82 to 1.00; 3159 participants) or remission (RR 0.89, 95% CI 0.77 to 1.03; 3155 participants). There was a small difference favouring SNRIs for depressive symptom scores on the MADRS (MD 1.52, 95% CI 0.50 to 2.53; 8 studies, 2807 participants). Very low quality evidence from eight studies (3159 participants) showed no significant differences between vortioxetine and the SNRIs as a class for total dropout rates (RR 0.89, 95% CI 0.73 to 1.08), dropouts due to adverse events (RR 0.74, 95% CI 0.51 to 1.08) and dropouts due to inefficacy (RR 1.52, 95% CI 0.70 to 3.30). Against individual antidepressants, analyses suggested that vortioxetine may be less effective than duloxetine in terms of response rates (RR 0.86, 95% CI 0.79 to 0.94; 6 studies, 2392 participants) and depressive symptoms scores on the MADRS scale (MD 1.99, 95% CI 1.15 to 2.83; 6 studies; 2106 participants). Against venlafaxine, meta-analysis of two studies found no statistically significant differences (response: RR 1.03, 95% CI 0.85 to 1.25; 767 participants; depressive symptom scores: MD 0.02, 95% CI -2.49 to 2.54; 701 participants). In terms of number of participants reporting at least one adverse effect (tolerability), vortioxetine was better than the SNRIs as a class (RR 0.90, 95% CI 0.86 to 0.94; 8 studies, 3134 participants) and duloxetine (RR 0.89, 95% CI 0.84 to 0.95; 6 studies; 2376 participants). However, the sensitivity analysis casts some doubts on this result, as only two studies used comparable dosing. We judged none of the studies to have a high risk of bias for any domain, but we rated all studies to have an unclear risk of bias of selective reporting and other biases.

AUTHORS’ CONCLUSIONS:

The place of vortioxetine in the treatment of acute depression is unclear. Our analyses showed vortioxetine may be more effective than placebo in terms of response, remission and depressive symptoms, but the clinical relevance of these effects is uncertain. Furthermore, the quality of evidence to support these findings was generally low. In comparison to SNRIs, we found no advantage for vortioxetineVortioxetine was less effective than duloxetine, but fewer people reported adverse effects when treated with vortioxetine compared to duloxetine. However, these findings are uncertain and not well supported by evidence. A major limitation of the current evidence is the lack of comparisons with the SSRIs, which are usually recommended as first-line treatments for acute depression. Studies with direct comparisons to SSRIs are needed to address this gap and may be supplemented by network meta-analyses to define the role of vortioxetine in the treatment of depression.

Comment in

PMID: 28677828

PMCID: PMC6483322

DOI: 10.1002/14651858.CD011520.pub2

[Indexed for MEDLINE]

Free PMC Article

LINK/PDF Y_CD011520.pdf

 

Article 2

 

CITATION Li G, Wang X, Ma D. Vortioxetine versus Duloxetine in the Treatment of Patients with Major Depressive Disorder: A Meta-Analysis of Randomized Controlled Trials. Clin Drug Investig. 2016 Jul;36(7):509-17. doi: 10.1007/s40261-016-0396-9.
ABSTRACT

BACKGROUND AND OBJECTIVE:

Vortioxetine and duloxetine are two new antidepressant drugs that have been used clinically in the treatment of major depressive disorder (MDD). The objectives of this meta-analysis were to evaluate the efficacy and tolerability of vortioxetine compared with duloxetine in MDD.

METHODS:

Randomized controlled trials (RCTs) published in PubMed, EMBASE, Web of Science, and ClinicalTrials.gov were systematically reviewed to compare vortioxetine with duloxetine in terms of efficacy and tolerability in patients with MDD. Results were expressed as the risk ratio (RR) with 95 % confidence intervals (CIs), and weighted mean difference (WMD). Pooled estimates were calculated by using a fixed-effects model or a randomized-effects model, depending on the heterogeneity among studies.

RESULTS:

A total of five RCTs involving 2287 patients met the inclusion criteria and were included in this meta-analysis. Pooled results showed that duloxetine was associated with a higher response rate than vortioxetine, as well as showing a similar remission rate with vortioxetine. The changes from baseline in the Montgomery-Åsberg Depression Rating Scale (MADRS), 24-item Hamilton Rating Scale for Depression (HAM-D24), Clinical Global Impression-Improvement scale (CGI-I), CGI-Severity scale (CGI-S), Sheehan Disability Scale (SDS), and Hamilton Anxiety Rating Scale (HAM-A) scores were significantly greater in the duloxetine group than in the vortioxetine group. The incidence of treatment-emergent adverse events was significantly higher in the duloxetine group than in the vortioxetine group.

CONCLUSION:

Duloxetine was more effective but less well-tolerated than vortioxetine in MDD. Considering the potential limitations of this meta-analysis, more large-scale RCTs are needed to confirm these findings.

PMID:  27067232

DOI: 10.1007/s40261-016-0396-9

[Indexed for MEDLINE]

LINK/PDF Y_li2016.pdf

 

Article 3

 

CITATION Cipriani A, Furukawa TA, et al. Comparative efficacy and acceptability of 21 antidepressant drugs for the acute treatment of adults with major depressive disorder: a systematic review and network meta-analysis. Lancet. 2018 Apr 7;391(10128):1357-1366. doi: 10.1016/S0140-6736(17)32802-7. Epub 2018 Feb 21.
ABSTRACT

BACKGROUND:

Major depressive disorder is one of the most common, burdensome, and costly psychiatric disorders worldwide in adults. Pharmacological and non-pharmacological treatments are available; however, because of inadequate resources, antidepressants are used more frequently than psychological interventions. Prescription of these agents should be informed by the best available evidence. Therefore, we aimed to update and expand our previous work to compare and rank antidepressants for the acute treatment of adults with unipolar major depressive disorder.

METHODS:

We did a systematic review and network meta-analysis. We searched Cochrane Central Register of Controlled Trials, CINAHL, Embase, LILACS database, MEDLINE, MEDLINE In-Process, PsycINFO, the websites of regulatory agencies, and international registers for published and unpublished, double-blind, randomised controlled trials from their inception to Jan 8, 2016. We included placebo-controlled and head-to-head trials of 21 antidepressants used for the acute treatment of adults (≥18 years old and of both sexes) with major depressive disorder diagnosed according to standard operationalised criteria. We excluded quasi-randomised trials and trials that were incomplete or included 20% or more of participants with bipolar disorder, psychotic depression, or treatment-resistant depression; or patients with a serious concomitant medical illness. We extracted data following a predefined hierarchy. In network meta-analysis, we used group-level data. We assessed the studies’ risk of bias in accordance to the Cochrane Handbook for Systematic Reviews of Interventions, and certainty of evidence using the Grading of Recommendations Assessment, Development and Evaluation framework. Primary outcomes were efficacy (response rate) and acceptability (treatment discontinuations due to any cause). We estimated summary odds ratios (ORs) using pairwise and network meta-analysis with random effects. This study is registered with PROSPERO, number CRD42012002291.

FINDINGS:

We identified 28 552 citations and of these included 522 trials comprising 116 477 participants. In terms of efficacy, all antidepressants were more effective than placebo, with ORs ranging between 2·13 (95% credible interval [CrI] 1·89-2·41) for amitriptyline and 1·37 (1·16-1·63) for reboxetine. For acceptability, only agomelatine (OR 0·84, 95% CrI 0·72-0·97) and fluoxetine (0·88, 0·80-0·96) were associated with fewer dropouts than placebo, whereas clomipramine was worse than placebo (1·30, 1·01-1·68). When all trials were considered, differences in ORs between antidepressants ranged from 1·15 to 1·55 for efficacy and from 0·64 to 0·83 for acceptability, with wide CrIs on most of the comparative analyses. In head-to-head studies, agomelatine, amitriptyline, escitalopram, mirtazapine, paroxetine, venlafaxine, and vortioxetine were more effective than other antidepressants (range of ORs 1·19-1·96), whereas fluoxetine, fluvoxamine, reboxetine, and trazodone were the least efficacious drugs (0·51-0·84). For acceptability, agomelatine, citalopram, escitalopram, fluoxetine, sertraline, and vortioxetine were more tolerable than other antidepressants (range of ORs 0·43-0·77), whereas amitriptyline, clomipramine, duloxetine, fluvoxamine, reboxetine, trazodone, and venlafaxine had the highest dropout rates (1·30-2·32). 46 (9%) of 522 trials were rated as high risk of bias, 380 (73%) trials as moderate, and 96 (18%) as low; and the certainty of evidence was moderate to very low.

INTERPRETATION:

All antidepressants were more efficacious than placebo in adults with major depressive disorder. Smaller differences between active drugs were found when placebo-controlled trials were included in the analysis, whereas there was more variability in efficacy and acceptability in head-to-head trials. These results should serve evidence-based practice and inform patients, physicians, guideline developers, and policy makers on the relative merits of the different antidepressants.

FUNDING:

National Institute for Health Research Oxford Health Biomedical Research Centre and the Japan Society for the Promotion of Science.

Comment in

PMID: 29477251

PMCID: PMC5889788

DOI: 10.1016/S0140-6736(17)32802-7

[Indexed for MEDLINE]

Free PMC Article

LINK/PDF Y_PIIS0140673617328027.pdf

Appendix (Includes Statistical Analysis Important to my Clinical Question: Y_mmc1.pdf

 

Article 4

 

CITATION Wagner G, Schultes MT, et al. Efficacy and safety of levomilnacipran, vilazodone, and vortioxetine compared with other second-generation antidepressants for major depressive disorders in adults: A systematic review and network meta-analysis. J Affect Disord. 2018 Mar 1;228:1-12. doi: 10.1016/j.jad.2017.11.056. Epub 2017 Nov 16.
ABSTRACT

BACKGROUND:

Second-generation antidepressants dominate the medical management of major depressive disorder (MDD). Levomilnacipranvilazodone and vortioxetine are the latest therapeutic options approved for the treatment of MDD. This systematic review aims to compare the benefits and harms of vilazodonelevomilnacipran, and vortioxetine with one another and other second-generation antidepressants.

METHODS:

We searched electronic databases up to September 2017 and reviewed reference lists and pharmaceutical dossiers to detect published and unpublished studies. Two reviewers independently screened abstracts and full text articles, and rated the risk of bias of included studies. Randomized controlled trials (RCTs) and controlled observational studies including adult outpatients with MDD were eligible for inclusion. We conducted network meta-analyses on response to treatment using frequentist multivariate meta-analyses models. Placebo- and active-controlled trials were eligible for network meta-analyses.

RESULTS:

Twenty-four studies met our inclusion criteria. Direct comparisons were limited to vilazodone versus citalopram, and vortioxetine versus duloxetine, paroxetine, or venlafaxine XR (extended release). Results of head-to-head trials and network meta-analyses, overall, indicated similar efficacy among levomilnacipranvilazodone, or vortioxetine and other second-generation antidepressants. Although rates of overall adverse events and discontinuation due to adverse events were similar, RCTs reported several differences in specific adverse events. For most outcomes the strength of evidence was low.

LIMITATIONS:

Limitations are the focus of literature searches on studies published in English, possible reporting biases, and general methodological limitations of network meta-analyses.

CONCLUSIONS:

Overall, the available evidence does not indicate greater benefits or fewer harms of levomilnacipranvilazodone, and vortioxetine compared with other second-generation antidepressants.

KEYWORDS:

LevomilnacipranNetwork metaanalysisSecond-generation antidepressantsSystematic reviewVilazodoneVortioxetine

PMID: 29197738

DOI: 10.1016/j.jad.2017.11.056

[Indexed for MEDLINE]

LINK/PDF Y_1-s2.0-S0165032717315379-main.pdf

 

Article 5

 

CITATION Llorca PM, Lancon C, et al. Relative efficacy and tolerability of vortioxetine versus selected antidepressants by indirect comparisons of similar studies. Curr Med Res Opin. 2014 Dec;30(12):2589-606. doi: 10.1185/03007995.2014.969566. Epub 2014 Oct 10.
ABSTRACT

INTRODUCTION:

Vortioxetine is an antidepressant with multimodal activity which has shown efficacy in major depressive disorder (MDD) patients in six of ten short-term, randomized, placebo-controlled trials (completed end 2012).

METHODS:

We performed meta-regression analyses to indirectly compare vortioxetine to seven marketed antidepressants with different mechanisms of action. To ensure study comparability, only experimental drug and placebo arms from placebo-controlled registration studies were included in primary analyses. The main outcomes were efficacy (standardized mean difference in change from baseline to 2 months on primary endpoint [MADRS/HAM-D]), and tolerability (withdrawal rate due to adverse events).

RESULTS:

For efficacy, estimates of treatment effect (negative estimates favor vortioxetine) for vortioxetine versus comparators were: agomelatine, -0.16 (p = 0.11); desvenlafaxine, 0.03 (p = 0.80); duloxetine, 0.09 (p = 0.42); escitalopram, -0.05 (p = 0.70); sertraline, -0.04 (p = 0.83); venlafaxine IR/XR, 0.12 (p = 0.33); and vilazodone, -0.25 (p = 0.11). For tolerability, all but one combination was numerically in favor of vortioxetine (odds ratio < 1), although not all differences were statistically significant: agomelatine, 1.77 (p = 0.03); desvenlafaxine, 0.58 (p = 0.04); duloxetine, 0.75 (p = 0.26); escitalopram, 0.67 (p = 0.28); sertraline, 0.30 (p = 0.01); venlafaxine, 0.47 (p = 0.01); and vilazodone, 0.64 (p = 0.18). Sensitivity analyses did not significantly alter antidepressant effect estimates or relative ranking.

CONCLUSION:

These meta-regression data show that vortioxetine offers a comparable or favorable combination of efficacy (measured by MADRS/HAM-D) and tolerability (measured by withdrawal rate due to adverse events) versus other antidepressants in registration studies in MDD. Alternative methods like mixed-treatment comparison and inclusion of all randomized studies and active reference arms may provide complementary information to this analysis (more evidence but also more heterogeneity). Key messages: Indirect comparisons based on registration studies allow a useful comparison between a recently approved antidepressant and an approved drug. Vortioxetine offers a comparable or favorable combination of efficacy (measured by MADRS/HAM-D assessments) and tolerability (measured by withdrawal rate due to adverse events) versus other antidepressants in registration studies in MDD.

KEYWORDS:

Antidepressants; Comparative evidence; Major depressive disorder; Vortioxetine

PMID: 25249164

DOI: 10.1185/03007995.2014.969566

[Indexed for MEDLINE]

 

LINK/PDF Y_Relativeefficacyandtolerabilityofvortioxetineversusselectedantidepressantsbyindirectcomparisonsofsimilarclinicalstudies.pdf

 

Summary of the Evidence:

 

Author (Date) Level of Evidence Sample/Setting

(# of subjects/ studies, cohort definition etc. )

Outcome(s) studied Key Findings Limitations and Biases
Koesters M et al. (2017) Systematic Review – 15 studies that met inclusion criteria, 7 of which were placebo controlled and 8 of which compared vortioxetine to serotonin-norepinephrine reuptake inhibitors (SNRIs)

– 6 studies comparing the response rates of vortioxetine versus duloxetine (n = 2392 participants)

– 6 studies comparing depressive symptoms scores of vortioxetine versus duloxetine (n = 2106 participants)

– 6 studies comparing adverse effects between treatment with vortioxetine and duloxetine (n = 2376 participants)

– Primary Outcomes: response to treatment, total number of dropouts

– Secondary Outcomes: achieved remission, depressive symptoms, dropout due to adverse events, dropout due to inefficacy, tolerability

– Response rates were statistically significantly lower for vortioxetine compared to duloxetine (RR 0.86, 95% CI 0.79-0.94, P = 0.001, I2 = 28%)

– There were no statistically significant differences in remission rates (Montgomery Asberg Depression Rating Scale total score < or = to 10) between Vortioxetine and Duloxetine (RR 0.85, 95% CI 0.70 to 1.02; P = 0.09; I2 = 58%)

– Depression scores on the MADRS scale were significantly more reduced by Duloxetine than Vortioxetine (MD 1.99, 95% CI 1.15 to 2.83; P < 0.001; I2 = 6%.)

– Fewer participants experienced adverse effects when treated with vortioxetine than duloxetine (RR 0.89, 95% CI 0.84-0.95; P <0.001; I2 = 18%.)

– The authors concluded that Vortioxetine was less effective than Duloxetine.

– Limitations included several studies with unclear risk of reporting bias (selective reporting), dropout of participants from multiple studies, and the fact that the studies were sponsored by the pharmaceutical companies that manufacture Vortioxetine (Lundbeck, Takeda).
Li G et al. (2016) Meta-Analysis – 5 RCTs (n = 2287 patients)

– Met inclusion criteria consisting of: RCT, adult patients with primary diagnosis of MDD, patients receiving Vortioxetine or Duloxetine, and outcome measurement of response rate, remission rate, changes from baseline depression rating scales. All trials reported data on remission rate.

 

– Outcomes: response rate, remission rate, changes from baseline in MADRS score, changes from baseline in 24-Item Hamilton Rating Scale for Depression, Clinical Global Impression (CGI)-Improvement Scale, CGI-Severity Scale, Sheehan Disability Scale, and Hamilton Anxiety Rating Scale, Adverse Events – Vortioxetine was associated with a lower response rate than duloxetine (RR 0.83, 95% CI 0.77-0.89; p <0.001; the test for heterogeneity was not significant)

– Vortioxetine had a similar effect as duloxetine in remission rate (RR 0.89, 95% CI 0.77 – 1.02; p = 0.091). There was significant heterogeneity calculated p = 0.005, I2 = 63.6%. Sensitivity analysis, performed by removing one of the studies, changed the estimates to RR 0.97, 95% CI 0.88 – 1.08; p = 0.576 and heterogeneity p = 0.270 and I2 = 20.9%.

– Furthermore, subgroup analysis was performed based on dose of Vortioxetine. This analysis revealed no statistically significant difference in Remission Rate when comparing different doses of Vortioxetine to treatment with 60mg of Duloxetine.

– Four of the Five RCTs reported on MADRS score. Pooled estimates reported that Vortioxetine was inferior to Duloxetine in the changes from baseline in MADRS score (WMD 1.97, 95% CI 1.14-2.79; p < 0.001). There was significant heterogeneity for this calculation, though sensitivity analysis did not change the outcome. Subgroup analysis based on doses of Vortioxetine showed that only for Vortioxetine 5mg/day were changes from baseline in MADRS score comparable to those in patients treated with Duloxetine (WMD 1.42, 95% CI -0.77 to 3.62, p = 0.204).

– Pooled results showed that vortioxetine was significantly worse than duloxetine in the changes from baseline in 24-Item Hamilton Rating Scale for Depression, CGI-I, CGI-Severity Scale, SDS, and Hamilton Anxiety Rating Scale scores

– The incidence of treatment-emergent adverse events was significantly lower in the vortioxetine group than the duloxetine group (RR 0.88, 95% CI 0.82-0.94; p <0.001). – The incidence of common adverse events (e.g. nausea, diarrhea, dry mouth, fatigue) was significantly lower in treatment with vortioxetine than duloxetine

– The authors state that their results suggest that Duloxetine is associated with similar remission rates as Vortioxetine. They also conclude that changes from baseline in various depression scores were significantly greater in the Duloxetine group than in the Vortioxetine group. The authors state that this shows that “… Duloxetine is more efficacious.”

– Limitations include differences in inclusion criteria in the individual RCTs chosen for the meta-analysis, limited number of RCTs available (only five) and thus limited sample size creating the potential to overestimate the treatment effect, variance in population among studies (gender proportion, mean age, race, baseline MADRS score), funding of the included trials by the pharmaceutical company (possible inherent conflict of interest and bias).
Cipriani et al. (2018) Systematic Review and Network Meta-Analysis – 522 Trials (n = 116,477)

– 15 Trails compared vortioxetine versus placebo or versus another active comparison

– Primary Outcomes: Efficacy (Response Rate measured by the total number of patients who had a reduction of > or = to 50% of the total score on a standardized observer-rating scale for depression), Acceptability (Treatment discontinuation measured by the proportion of patients who withdrew for any reason)

– Secondary Outcomes: Endpoint depression score, remission rate, proportion of patients who dropped out early because of adverse events

– “… and vortioxetine were more effective than other antidepressants.”

– “In terms of acceptability… and vortioxetine were more tolerable than other antidepressants.”

– For most comparisons involving vortioxetine, the evidence was described as low to very low based on the GRADE judgments

– Comparing vortioxetine to duloxetine revealed an OR for efficacy (response rate) of 0.69 (95% CI 0.40-1.20) in favor of vortioxetine. Important, however, is the fact that this result is not statistically significant as the point of no difference is contained within the confidence interval.

– Comparing vortioxetine to duloxetine revealed an OR for acceptability (dropout rate) of 1.99 (95% CI 1.13-3.52) in favor of vortioxetine. This result was statistically significant.

– Comparing vortioxetine to duloxetine revealed an OR for remission rates of 0.89 (95% CI 0.49-1.59) in favor of vortioxetine. This result was not statistically significant.

– Limitations include heterogeneity in data, use of last observation carried forward (LOCF) approach for imputing missing outcome data, bias in conduct, analysis, or reporting of head-to-head trials driven by commercial interests, non-industry funded trials were scant, inclusion of unpublished data, utilizing the GRADE framework, a large body of the evidence reported was considered low or very low quality, the authors did not investigate potentially important clinical and demographical modifiers at the individual patient level like age, sex, severity of symptoms, etc.
Wagner G et al. (2018) Systematic Review and Network Meta-Analysis – 24 studies that met inclusion criteria – either RCTs or controlled observational studies including adult outpatients with MDD – were included

– 2 studies directly compared Vortioxetine to Duloxetine

– First study: Phase III, Fixed-Dose RCT randomizing 614 outpatients with MDD to Vortioxetine 15mg, Vortioxetine 20mg, Duloxetine 60mg, or Placebo. Primary outcome measured was mean change on the Montgomery Asberg Depression Rating Scale from baseline to week 8.

– Second study: RCT assessing the impact of flexible-dose Vortioxetine (10-20mg per day), fixed-dose duloxetine (60mg per day), or placebo on cognitive functioning in 602 patients with MDD.

– Authors excluded literature in which patients received treatment with dosages outside of FDA approved ranges.

– Primary outcome of first study: mean change on the Montgomery Asberg Depression Rating Scale from baseline to week 8.

Secondary outcome of first study: response to treatment at 8 weeks, remission rates, changes on the Sheehan Disability Scale, change on CGI-I, risk of adverse events, overall discontinuation, discontinuation because of adverse events

– Primary outcome of second study: cognitive functioning

– Secondary outcome of second study: response to treatment, remission rates, changes on the Sheehan Disability Scale, change on CGI-I, risk of adverse events, overall discontinuation, discontinuation because of adverse events

– Results from both studies reported similar remission rates (Montgomery Asberg Depression Rating Scale total score < or = to 10) between Vortioxetine and Duloxetine at eight weeks. The second study reported relative risk of remission for vortioxetine compared with duloxetine was RR 0.89, 95% CI 0.65-1.22.

– The first study reported higher response rates for duloxetine than vortioxetine. The relative risk of response rate for vortioxetine compared to duloxetine was RR 0.81, 95% CI 0.67-0.99, which was statistically significant.

– The second study reported similar response rates between vortioxetine and duloxetine. The relative risk of response rate for vortioxetine compared to duloxetine was RR 1.22, 95% CI 0.95-1.56.

The authors concluded that there is similar efficacy, regarding remission rates, in patients treated with Vortioxetine versus Duloxetine.

– The two studies that directly compared Vortioxetine to Duloxetine were funded by the producer of Vortioxetine.

– Limitations included focus on adult outpatients with MDD (evidence cannot be generalized to children, adolescents, hospitalized patients, or patients with other classifications of depression), most trials excluded patients with medical comorbidities or suicidal ideation, the authors searched only for English publications introducing the possibility for language bias, and the risk of publication bias and selective outcome reporting.

Llorca et al. (2014) Meta-Analysis – 59 double-blind RCTs

– 57 studies, 10 of which were vortioxetine studies, were selected for the primary outcome (n = 18,326 participants)

Primary Outcomes: Efficacy (mean difference between the experimental drug and the placebo in the change from baseline to 2 months; standardized mean differences were reported), Tolerability (proportion of total patients in each treatment group that withdrew from the study before completion due to adverse events during the first 2 months of treatment; represented as OR between active treatment and placebo) – Comparing vortioxetine to duloxetine did not reveal a statistically significant difference in efficacy between the two drugs

– Comparing vortioxetine to duloxetine did not reveal a statistically significant difference in tolerability (as expressed as OR) between the two drugs

– Sensitivity analyses were conducted to determine reliability of results

– “… vortioxetine offers a favorable combination of efficacy and tolerability versus other selected antidepressants, which is one of the factors that may encourage patient compliance.”

– “Although in clinical practice differences in antidepressant response with different agents can be readily observed in individual patients, our findings are consistent with previous analyses that showed no substantial difference in clinical efficacy between antidepressants when comparing groups of patients.”

– Limitations included the use of LOCF imputation, several studies included missing data for response and remission endpoints, use of indirect comparison and network meta-analysis, differences in mean baseline severity of depression, comparison to only a select number of marketed antidepressants, additional factors that may influence treatment choice (e.g. ease of use, access, cost) were not assessed, covariate adjustment, use of MADRS and HAM-D scales (the question of whether particular antidepressants could be more effective in particular subtypes of depression cannot be answered when utilizing these scales), funding by H. Lundback A/S, the manufacturer of vortioxetine, several of the authors have received grants from, hold important positions in, and/or are employed by the manufacturer of vortioxetine

 

Conclusions:

– Briefly summarize the conclusions of each article, then provide an overarching conclusion.

 

By Article:

Koesters M et al. (2017):

In the treatment of MDD:

  • Response rates were statistically significantly lower for vortioxetine compared to duloxetine.
  • Depression scores (MADRS Scale) were statistically significantly more reduced by duloxetine than vortioxetine.
  • There was no statistically significant difference in remission rates when comparing vortioxetine to duloxetine.
  • Fewer patients experienced adverse effects (a statistically significant finding) when treated with vortioxetine than duloxetine.
  • The authors concluded that vortioxetine was less effective than duloxetine.

Li G et al. (2016):

In the treatment of MDD:

  • Response rates were statistically significantly lower for vortioxetine compared to duloxetine.
  • Depression scores (MADRS Scale and other depression scales like 24-Item Hamilton Rating Scale, CGI-I, etc.) were statistically significantly more reduced by duloxetine than vortioxetine.
  • There was no statistically significant difference in remission rates when comparing vortioxetine to duloxetine.
  • Incidence of both treatment-emergent adverse events and common adverse events was statistically significantly lower for vortioxetine than duloxetine.
  • Based on the above findings, the authors concluded that duloxetine is more efficacious than vortioxetine.

Cipriani et al. (2018):

In the treatment of MDD:

  • There was no statistically significant difference in response rate or remission rate when comparing vortioxetine to duloxetine.
  • The acceptability (as assessed using dropout rate) was statistically significantly in favor of vortioxetine compared to duloxetine.

Wagner G et al. (2018):

In the treatment of MDD:

  • Regarding response rates, the results of two studies were conflicting. The first study reported a statistically significantly higher response rate for duloxetine than vortioxetine, while the second study reported no statistically significant difference in response rate between the two medications.
  • There was no statistically significant difference in remission rates when comparing vortioxetine to duloxetine.
  • The authors concluded that there is similar efficacy regarding remission rates in patients treated with vortioxetine versus duloxetine.

Llorca et al. (2014):

In the treatment of MDD:

  • There was no statistically significant difference in efficacy between vortioxetine or duloxetine.
  • There was no statistically significant difference in tolerability between vortioxetine or duloxetine.

 

Overarching Conclusion:

The conclusions drawn from the highest quality of evidence are nonunanimous regarding:

  • Response Rate
    • Two of four studies reporting on response rate reported statistically significantly lower response rates in patients treated with vortioxetine compared to duloxetine. One study reported no statistically significant difference between response rates in patients treated with vortioxetine compared to duloxetine. One study included an article that reported a statistically significantly lower response rate in patients treated with vortioxetine compared to duloxetine and another article that reported no statistically significant difference between response rates.
  • Reduction in Depression Scores
    • Two of three studies reporting on depression scores reported statistically significantly greater reductions in depression scores (e.g. MADRS) in those treated with duloxetine versus vortioxetine. One study reported no statistically significant difference in reduction in depression score in those treated with duloxetine versus vortioxetine.
  • Adverse Events
    • Three of four studies reporting on adverse events (and withdrawal from study 2/2 to adverse events) reported statistically significantly lower rate of AEs and dropout in patients treated with vortioxetine compared to duloxetine. One study reported no statistically significant difference in tolerability (dropout due to AEs) in patients treated with vortioxetine compared to duloxetine.

The conclusions drawn from the highest quality of evidence are unanimous regarding:

  • Remission Rate
    • Four of four studies reported no statistically significant difference in remission rates in patients treated with vortioxetine compared to duloxetine.

 

Clinical Bottom Line:

Please include an assessment of the following:

– Weight of the evidence – summarize the weaknesses/strengths of the articles and explain how they factored into your clinical bottom line (this may recap what you discussed in the criteria for choosing the articles)

– Magnitude of any effects

– Clinical significance (not just statistical significance)

– Any other considerations important in weighing this evidence to guide practice  – If the evidence you retrieved was not enough to conclude an answer to the question, discuss what aspects still need to be explored and what the next studies will have to answer/provide (e.g. larger number, higher level of evidence, answer which sub-group benefits, etc)

 

Clinical Question:

In adult patients with Major Depressive Disorder (MDD), how does Trintellix (Vortioxetine) compared to Cymbalta (Duloxetine) affect symptom improvement and remission rates?

 

Clinical Bottom Line:

The highest quality evidence unanimously suggests that there is no statistically significant difference in remission rates in patients treated with Trintellix (Vortioxetine) versus Cymbalta (Duloxetine). Further research is required to more accurately elucidate:

  1. The effect of the drugs on reduction in depression scores
  2. The effect of the drugs on response rate
  3. The effect of the drugs on adverse effects

 

Weight of the Evidence (With Rank (bolded number) and Explanation):

1 Koesters M et al. (2017): This is the largest systematic review (also a Cochrane Review). This systematic review utilizes the greatest number of RCTs (including direct comparisons of vortioxetine to duloxetine) to investigate my clinical question and has the greatest sample size.

2 Li G et al. (2016): This is a meta-analysis utilizing five RCTs characterized as having a large sample size.

3 Cipriani et al. (2018): This is a systematic review and network meta-analysis that utilizes the results of 15 trials (vortioxetine-containing) to address the focus of this clinical question.

4 Wagner G et al. (2018): This is a systematic review and network meta-analysis that only utilizes the results of two studies (and also has the smallest sample size) to address the focus of this clinical question.

5 Llorca et al. (2014): This is the oldest study retrieved for this clinical question. It is a meta-analysis in which the authors performed indirect comparisons that included 10 studies in which vortioxetine was utilized.

 

Magnitude of Effects:

Koesters M et al. (2017):

In the treatment of MDD:

  • Response rates were statistically significantly lower for vortioxetine compared to duloxetine (RR 0.86, 95% CI 0.79-0.94, P = 0.001, I2 = 28%)
  • There were no statistically significant differences in remission rates (Montgomery Asberg Depression Rating Scale total score < or = to 10) between Vortioxetine and Duloxetine (RR 0.85, 95% CI 0.70 to 1.02; P = 0.09; I2 = 58%)
  • Depression scores on the MADRS scale were significantly more reduced by Duloxetine than Vortioxetine (MD 1.99, 95% CI 1.15 to 2.83; P < 0.001; I2 = 6%.)
  • Fewer participants experienced adverse effects when treated with vortioxetine than duloxetine (RR 0.89, 95% CI 0.84-0.95; P <0.001; I2 = 18%.)

Li G et al. (2016):

  • Vortioxetine was associated with a lower response rate than duloxetine (RR 0.83, 95% CI 0.77-0.89; p <0.001)
  • Vortioxetine had a similar effect as duloxetine in remission rate (RR 0.89, 95% CI 0.77 – 1.02; p = 0.091). Sensitivity analysis, performed by removing one of the studies, changed the estimates to RR 0.97, 95% CI 0.88 – 1.08; p = 0.576 and heterogeneity p = 0.270 and I2 = 20.9%.
  • Vortioxetine was inferior to Duloxetine in the changes from baseline in MADRS score (WMD 1.97, 95% CI 1.14-2.79; p < 0.001).
  • The incidence of treatment-emergent adverse events was significantly lower in the vortioxetine group than the duloxetine group (RR 0.88, 95% CI 0.82-0.94; p <0.001).

Cipriani et al. (2018):

  • Comparing vortioxetine to duloxetine revealed an OR for efficacy (response rate) of 0.69 (95% CI 0.40-1.20) in favor of vortioxetine. Important, however, is the fact that this result is not statistically significant as the point of no difference is contained within the confidence interval.
  • Comparing vortioxetine to duloxetine revealed an OR for acceptability (dropout rate) of 1.99 (95% CI 1.13-3.52) in favor of vortioxetine. This result was statistically significant.
  • Comparing vortioxetine to duloxetine revealed an OR for remission rates of 0.89 (95% CI 0.49-1.59) in favor of vortioxetine. This result was not statistically significant.

Wagner G et al. (2018):

  • The second study reported relative risk of remission for vortioxetine compared with duloxetine was RR 0.89, 95% CI 0.65-1.22. This result was not statistically significant.
  • The first study reported higher response rates for duloxetine than vortioxetine. The relative risk of response rate for vortioxetine compared to duloxetine was RR 0.81, 95% CI 0.67-0.99, which was statistically significant.
  • The second study reported similar response rates between vortioxetine and duloxetine. The relative risk of response rate for vortioxetine compared to duloxetine was RR 1.22, 95% CI 0.95-1.56.

Llorca et al. (2014):

  • Comparing vortioxetine to duloxetine did not reveal a statistically significant difference in efficacy between the two drugs.
  • Comparing vortioxetine to duloxetine did not reveal a statistically significant difference in tolerability (as expressed as OR) between the two drugs

 

Clinical Significance/Implications (In Our Patient and Beyond):

Whether beginning, switching, or discontinuing medications, a clinician must consider, and should disclose to their patient, the benefits and risks associated with the action. The clinician might start by generally discussing the notion that medications affect individuals differently. The clinician may describe how if the medication “does work” for the patient, remission rates are similar in patients treated with either agent. An important component of any pharmacological conversation involves a discussion of adverse effects. The clinician might the adverse effects (both emergent and common AEs) associated with each of the medications. Ultimately, the risks and benefits would need to be considered on a case-by-case basis, and the patient-clinician team should decide on the treatment plan that they feel is most suitable. For the clinical situation that prompted this search, a discussion of the risks and benefits associated with switching from Duloxetine to Vortioxetine ensued, and ultimately the patient-clinician team (including myself) opted not to switch the patient’s medication.

 

Other Considerations:

Future research should emphasize direct comparisons, head-to-head trials, between vortioxetine and duloxetine. Though less likely, it would be preferable for studies to be performed that are not funded by the pharmaceutical companies whom produce the drugs being studied. The quality of the evidence needs to increase by authors performing highly controlled RCT studies with low heterogeneity and larger sample sizes. Furthermore, research regarding tolerability and adverse effects should be performed and entail differentiating the adverse effects rather than summing them together. The authors of the Cochrane article additionally recommend performing head-to-head trials comparing vortioxetine to SSRIs, the first line agents in the treatment of MDD. Several authors of the aforementioned studies described the importance of other social factors in the use of antidepressants. For this reason, inquiries into feasibility (e.g. cost-benefit analysis, etc.) should be performed to increase the fund of literature related to vortioxetine. Researchers recommend investigating the use of vortioxetine versus other antidepressants in different subgroups, including variations in age in addition to different types of depression (e.g. typical versus atypical depression, etc.)

 

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