Abstract
Aim: TSPO is a neuroinflammatory biomarker and emerging therapeutic target in psychiatric disorders. We evaluated whether TSPO polymorphisms contribute to interindividual variability in schizophrenia, antipsychotic efficacy and antipsychotic-induced weight gain. Patients & methods: We analyzed TSPO polymorphisms in 670 schizophrenia cases and 775 healthy controls. Gene-gene interactions between TSPO and other mitochondrial membrane protein-encoding genes (VDAC1 and ANT1) were explored. Positive findings were evaluated in two independent samples (Munich, n = 300; RUPP, n = 119). Results: TSPO rs6971 was independently associated with antipsychotic-induced weight gain in the discovery (puncor = 0.04) and RUPP samples (p = 3.00 × 10-3), and interacted with ANT1 rs10024068 in the discovery (p = 1.15 × 10-3) and RUPP samples (p = 2.76 × 10-4). Conclusion: Our findings highlight TSPO as a candidate for future investigations of antipsychotic-induced weight gain, and support the involvement of mitochondrial membrane components in this serious treatment side effect. Original submitted 20 August 2014; Revision submitted 3 November 201.
Original language | English |
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Pages (from-to) | 5-22 |
Number of pages | 18 |
Journal | Pharmacogenomics |
Volume | 16 |
Issue number | 1 |
DOIs | |
State | Published - 1 Jan 2015 |
Keywords
- SLC25A4
- TSPO
- adenine nucleotide translocator
- antipsychotic
- genetics
- mitochondria
- peripheral benzodiazepine receptor
- pharmacogenomics
- schizophrenia
- translocator protein-18 kDa
- weight gain