Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2020 May 29;10(1):172.
doi: 10.1038/s41398-020-0842-6.

ENIGMA MDD: seven years of global neuroimaging studies of major depression through worldwide data sharing

Lianne Schmaal  1   2 Elena Pozzi  3   4 Tiffany C Ho  5   6   7 Laura S van Velzen  3   4 Ilya M Veer  8 Nils Opel  9 Eus J W Van Someren  10   11   12 Laura K M Han  12 Lybomir Aftanas  13   14 André Aleman  15 Bernhard T Baune  9   16   17 Klaus Berger  18 Tessa F Blanken  10   11 Liliana Capitão  19   20 Baptiste Couvy-Duchesne  21 Kathryn R Cullen  22 Udo Dannlowski  9 Christopher Davey  16 Tracy Erwin-Grabner  23 Jennifer Evans  24 Thomas Frodl  25 Cynthia H Y Fu  26   27 Beata Godlewska  19 Ian H Gotlib  5 Roberto Goya-Maldonado  23 Hans J Grabe  28   29 Nynke A Groenewold  30 Dominik Grotegerd  9 Oliver Gruber  31 Boris A Gutman  32 Geoffrey B Hall  33 Ben J Harrison  34 Sean N Hatton  35 Marco Hermesdorf  18 Ian B Hickie  35 Eva Hilland  36   37   38 Benson Irungu  39 Rune Jonassen  40 Sinead Kelly  41 Tilo Kircher  42 Bonnie Klimes-Dougan  22 Axel Krug  42 Nils Inge Landrø  36   37 Jim Lagopoulos  43 Jeanne Leerssen  10   11 Meng Li  25 David E J Linden  44   45   46 Frank P MacMaster  47 Andrew M McIntosh  48 David M A Mehler  9   45   46 Igor Nenadić  42   49 Brenda W J H Penninx  12 Maria J Portella  50   51   52 Liesbeth Reneman  53 Miguel E Rentería  54 Matthew D Sacchet  55 Philipp G Sämann  56 Anouk Schrantee  53 Kang Sim  57   58 Jair C Soares  39 Dan J Stein  59 Leonardo Tozzi  6 Nic J A van Der Wee  60   61 Marie-José van Tol  15 Robert Vermeiren  62 Yolanda Vives-Gilabert  63 Henrik Walter  8 Martin Walter  64   65 Heather C Whalley  48 Katharina Wittfeld  28   29 Sarah Whittle  34 Margaret J Wright  66   67 Tony T Yang  7 Carlos Zarate Jr  68 Sophia I Thomopoulos  69 Neda Jahanshad  69 Paul M Thompson  69 Dick J Veltman  12
Affiliations
Review

ENIGMA MDD: seven years of global neuroimaging studies of major depression through worldwide data sharing

Lianne Schmaal et al. Transl Psychiatry. .

Abstract

A key objective in the field of translational psychiatry over the past few decades has been to identify the brain correlates of major depressive disorder (MDD). Identifying measurable indicators of brain processes associated with MDD could facilitate the detection of individuals at risk, and the development of novel treatments, the monitoring of treatment effects, and predicting who might benefit most from treatments that target specific brain mechanisms. However, despite intensive neuroimaging research towards this effort, underpowered studies and a lack of reproducible findings have hindered progress. Here, we discuss the work of the ENIGMA Major Depressive Disorder (MDD) Consortium, which was established to address issues of poor replication, unreliable results, and overestimation of effect sizes in previous studies. The ENIGMA MDD Consortium currently includes data from 45 MDD study cohorts from 14 countries across six continents. The primary aim of ENIGMA MDD is to identify structural and functional brain alterations associated with MDD that can be reliably detected and replicated across cohorts worldwide. A secondary goal is to investigate how demographic, genetic, clinical, psychological, and environmental factors affect these associations. In this review, we summarize findings of the ENIGMA MDD disease working group to date and discuss future directions. We also highlight the challenges and benefits of large-scale data sharing for mental health research.

PubMed Disclaimer

Conflict of interest statement

HJG has received travel grants and speakers honoraria from Fresenius Medical Care, Neuraxpharm, Servier and Janssen Cilag as well as research funding from Fresenius Medical Care. DJS has received grants and/or honoraria from Lundbeck and Sun. MDS has received consulting fees from Vorso Corporation. Dr. Zarate is a full-time US government employee. He is listed as a co-inventor on a patent for the use of ketamine and its metabolites in major depression and suicidal ideation. Dr. Zarate has assigned his patent rights to the US government but will share a percentage of any royalties that may be received by the government.

Figures

Fig. 1
Fig. 1. World map of cohorts participating in ENIGMA MDD.
Locations of cohorts included in the ENIGMA MDD consortium in September 2019.
Fig. 2
Fig. 2. Connections between ENIGMA MDD and other ENIGMA working groups.
Note: not all ENIGMA working groups are displayed in this figure. In September 2019, ENIGMA includes 50 working groups, of which 26 working groups focus on mental and neurological disorders. dMRI diffusion magnetic resonance imaging (MRI), rsfMRI resting state functional MRI, EEG electroencephalogram, tbfMRI task-based functional MRI, MDD major depressive disorder, PTSD post-traumatic stress disorder, AD anxiety disorder.
Fig. 3
Fig. 3. Converging findings across ENIGMA MDD studies.
Specific characteristics of brain structure are differentially affected by MDD (or vice versa) at different stages of life. a Alterations in hippocampal and amygdala volumes and shapes are observed in adolescent-onset MDD and lower cortical surface area in adolescents with MDD. b Cortical thickness alterations and white matter abnormalities are specifically associated with adult-onset MDD and older age in individuals with MDD and/or childhood maltreatment. *This association was independent of MDD diagnosis. MDD major depressive disorder, FA fractional anisotropy, RD radial diffusivity.
Fig. 4
Fig. 4. Subcortical volume and cortical thickness alterations in schizophrenia, bipolar disorder, and MDD.
Results from the ENIGMA major depressive disorder (MDD), schizophrenia (SCZ), and bipolar disorder (BD) working groups suggest that there is considerable overlap in subcortical volume a and cortical thickness b alterations across these diagnostic groups. Most widespread effects and highest effect sizes were observed in SCZ (up to Cohen’s d 0.5), followed by BD (Cohen’s d 0.3), and with more local effects and lower effect sizes in MDD (Cohen’s d 0.15). Importantly, results displayed are based on case–control comparisons within each disorder separately and are not derived from direct comparisons between patient groups. Data were analyzed with the same harmonized methods across the disorders.

References

    1. World Health Organization. Depression and other common mental disorders: global health estimates. 1–24 (2017).
    1. Rush AJ, et al. Acute and longer-term outcomes in depressed outpatients requiring one or several treatment steps: a STAR*D report. Am. J. Psychiatry. 2006;163:1905–1917. - PubMed
    1. Machado M, Iskedjian M, Ruiz I, Einarson TR. Remission, dropouts, and adverse drug reaction rates in major depressive disorder: a meta-analysis of head-to-head trials. Curr. Med. Res. Opin. 2006;22:1825–1837. - PubMed
    1. Thase M, et al. Remission rates following antidepressant therapy with bupropion or selective serotonin reuptake inhibitors: a meta-analysis of original data from 7 randomized controlled trials. J. Clin. Psychiatry. 2005;66:974–981. - PubMed
    1. Trivedi MH, et al. Evaluation of outcomes with citalopram for depression using measurement-based care in STAR*D: implications for clinical practice. Am. J. Psychiatry. 2006;163:28–40. - PubMed

Publication types