Mentalization-Based Treatment for Concurrent Borderline Personality Disorder and Substance Use Disorder: A Randomized...

Area of Science:

• Psychiatry
• Clinical Psychology
• Addiction Medicine

Background:

• Concurrent borderline personality disorder (BPD) and substance use disorder (SUD) present significant treatment challenges.
• Limited clinical trials exist for psychological interventions targeting co-occurring BPD and SUD.
• Mentalization-based treatment (MBT) has demonstrated efficacy for BPD in prior studies.

Purpose of the Study:

• To assess the feasibility and effectiveness of MBT for individuals with co-occurring BPD and SUD.
• To compare MBT combined with SUD treatment against SUD treatment alone.

Main Methods:

• A randomized controlled trial involving 46 patients with concurrent BPD and SUD.
• Participants were assigned to either MBT plus SUD treatment (n=24) or SUD treatment alone (n=22).
• Outcomes were evaluated at 18 months using objective data, interviews, and self-report measures.

Main Results:

• No statistically significant differences were observed between the MBT and control groups across all outcome variables.
• The MBT group had zero suicide attempts, compared to four in the control group (p=0.06).
• A majority of therapists exhibited insufficient adherence and quality in delivering MBT.

Conclusions:

• MBT for concurrent BPD and SUD appears to be safe and potentially beneficial in mitigating suicide attempt risk.
• Further research is needed to optimize MBT delivery and confirm its effectiveness in this population.
• Challenges in therapist adherence may have impacted treatment outcomes.