Bipolar disorder affects around 2% of the population and is linked with reduced life expectancy and socioeconomic burden. Depressive episodes are difficult to treat and typically more prevalent, enduring and burdensome than manic episodes. The use of antidepressants alone has limited effect and is associated with significant clinical risk through polarity switch. Current National Institute for Health and Care Excellence guidelines recommend quetiapine, olanzapine (with or without fluoxetine) and lamotrigine; however, these medications have limited efficacy, tolerability and acceptability. The ASCEnD study aims to assess the clinical and cost-effectiveness of aripiprazole plus sertraline compared with quetiapine, offering potential improvements for outcomes in bipolar depression. The study is funded by the National Institute for Health and Care Research Health Technology Assessment programme (NIHR132773).

ASCEnD is a prospective, two-arm, superiority, individually 1:1 randomised, controlled, pragmatic, parallel group, type A open-label clinical trial of aripiprazole/sertraline medication combination compared with quetiapine for bipolar depression. The study is conducted in the UK National Health Service setting with the aim of recruiting and randomising 270 participants followed-up for 24 weeks. Adults with bipolar disorder self-refer or are recruited through primary and secondary care services. The primary outcome is change in depressive symptoms 12–16 weeks after randomisation. Secondary outcomes include measures of symptom change, treatment satisfaction, tolerability, medication adherence, concomitant medication use, psychosocial functioning, quality of life and cost-effectiveness and informal carer measures of quality of life and costs of caring. The exploratory outcome is change in participant reward and punishment responsiveness. Analysis will follow a prespecified statistical analysis plan. A nested qualitative study is included to examine feasibility and acceptability of the trial design.

A Clinical Trial Authorisation from Medicines and Healthcare products Regulatory Agency, and approval from the Health Research Authority (IRAS 1007468) and North East – Newcastle and North Tyneside 1 Research Ethics Committee (23/NE/0132) were obtained. Results will be disseminated through peer-reviewed publications, conference presentations and lay summaries for participants and patient and public groups.

ISRCTN63917405.

Major depressive disorder (MDD) is among the most common psychiatric disorders in children and adolescents. While previous meta-analyses have synthesised evidence on the efficacy and acceptability of newer-generation antidepressants in this population, specific adverse events (AEs) remain poorly characterised. This is of high clinical importance, as AEs are burdensome for patients, can reduce treatment adherence and lead to discontinuation. Here, we present a protocol for a network meta-analysis designed to evaluate the specific AE profile and comparative tolerability of newer-generation antidepressants in children and adolescents with MDD.

The planned study will include double-blind randomised controlled trials that compared one active drug with another and/or placebo for the acute treatment of MDD in children and adolescents. The following antidepressants will be considered: agomelatine, alaproclate, bupropion, citalopram, desvenlafaxine, duloxetine, edivoxetine, escitalopram, fluoxetine, fluvoxamine, levomilnacipran, milnacipran, mirtazapine, paroxetine, reboxetine, sertraline, venlafaxine, vilazodone and vortioxetine. The primary outcomes will include the number of patients experiencing at least one AE, specific non-serious AEs, serious AEs (eg, suicidal ideation) and AEs leading to treatment discontinuation. Published and unpublished studies will be retrieved through a systematic search in the following databases: PubMed, Embase, Cochrane Library (including the Cochrane Central Register of Controlled Trials), Web of Science Core Collection, PsycInfo and regulatory agencies’ registries. Study selection and data extraction will be performed independently by two reviewers. For each outcome, a network meta-analysis will be performed to synthesise all evidence. Consistency will be assessed through local and global methods, and the confidence in the evidence will be evaluated using the Confidence in Network Meta-Analysis web application. All analyses will be conducted in the R software.

The planned review does not require ethical approval. The findings will be published in a peer-reviewed journal and may be presented at international conferences.

CRD420251011399.