Participant in the ENIGMA consortium: a world-wide data-pooling initiative aiming at answering questions related to importance of genetic variation for structural variance and abnormalities related to MDD using meta-analytic data-analysis of data-sets collected in 12 sites, including a total number of 1900 MDD patients and 3500 controls (e.g. Stein et al., 2013, Nature Genetics; Thompson et al., 2014, Brain, Imaging and Behavior; Hibar et al., 2017; Nature communications).