NCT02068326.

Study name	Public title: MBT in groups for adolescents with BPD or subthreshold BPD versus TAU ‐ the M‐GAB randomized controlled trial (M‐GAB) Scientific title: Mentalization‐based treatment in groups for adolescents with borderline personality disorder (BPD) or subthreshold BPD versus treatment‐as‐usual ‐ the M‐GAB randomised controlled trial (M‐GAB)
Methods	Randomised controlled trial
Participants	Inclusion criteria: Borderline personality disorder
Interventions	Mentalisation‐based treatment
Outcomes	Primary outcomes: The Borderline Personality Feature Scale for Children (BPFS‐C)
Starting date	September 2015. Specific date not provided
Contact information	Name: Erik Simonsen, PhD Address: Child and Adolescent Psychiatric Department, Region Zealand, Denmark E‐mail: not provided Telephone: not provided
Notes	None