Psychiatric manifestations in a patient with a pathogenic variant in the MT-TL1 gene associated with MELAS

Anindita Gujrati1, Manjiri Chaitanya Datar2, Anushka Mukesh Makhija1

  • 1Psychiatry, Bharati Vidyapeeth, Pune, Maharashtra, India.

BMJ Case Reports
|June 25, 2025
PubMed

Insights

Mitochondrial encephalopathy lactic acidosis and stroke-like episodes (MELAS) is a rare neurodegenerative disorder. This case study highlights rare psychiatric manifestations in a MELAS patient with an MT-TL1 gene mutation.

Area of Science:

  • Neurogenetics
  • Mitochondrial Medicine
  • Psychiatry

Background:

  • MELAS syndrome is a rare inherited neurodegenerative disorder.
  • It stems from mitochondrial dysfunction, impacting energy production.
  • Neurological symptoms are common, but psychiatric issues are rare.

Purpose of the Study:

  • To report a rare case of MELAS syndrome.
  • To highlight the occurrence of psychiatric manifestations in MELAS.
  • To investigate the genetic basis in this specific case.

Main Methods:

  • Case report of a female patient in her mid-40s.
  • Genetic analysis to identify mutations.
  • Clinical assessment for neurological and psychiatric symptoms.

Main Results:

  • The patient presented with a heteroplasmic mutation in the MT-TL1 gene.
  • This genetic mutation is associated with MELAS syndrome.
  • The patient developed significant psychiatric manifestations.

Conclusions:

  • Psychiatric symptoms can occur in MELAS syndrome, though rarely.
  • MT-TL1 gene mutations are linked to MELAS and its varied presentations.
  • Further research is needed to understand the link between MELAS and psychiatric disorders.