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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2019, Vol. 24 ›› Issue (3): 288-295.doi: 10.12092/j.issn.1009-2501.2019.03.009

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Association analysis of apolipoprotein E polymorphisms and weight loss among schizophrenia patients with risperidone treatment

FAN Yao 1,3, XUE Yong 2, WANG Xin 2, CHEN Xuefei 2, ZHANG Xu 2, YAO Yingshui 1, SHEN Chong 3   

  1. 1 School of Public Health, Wannan Medical College, Wuhu 241001, Anhui, China; 2 Department of Medical Laboratory, No.3 People's Hospital of Huai'an, Huai'an 223001, Jiangsu, China; 3 Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China
  • Received:2019-01-07 Revised:2019-02-16 Online:2019-03-26 Published:2019-04-01

Abstract:

AIM: To explore the association between apolipoprotein E (APOE) gene polymorphisms and weight change in schizophrenia (SZ) patients induced by antipsychotic treatment. METHODS: 1 516 first-episode SZ patients treated with risperidone, aripiprazole, quetiapine, clozapine, olanzapine and perphenazine for 2 to 7 weeks were followed up. TaqMan genotyping technique was used to detect APOE gene polymorphisms. Cox regression was used to analysis the association between APOE gene variation and risk of weight change induced by drug treatment in SZ patients. RESULTS:The results showed that rs7412 increased the risk of weight loss in patients treated with risperidone, HR (95% CI) was 1.78 (1.01-3.14) with P=0.045. In patients treated with risperidone, the risk of weight loss was higher in carriers of AG/GG genotype of rs405509 than in carriers of AA genotype, HR (95% CI) was 1.75 (1.02-2.98), P value was 0.04. In SZ patients treated with other antipsychotic drugs, the associations between rs769450, rs7412 and rs405509 genotypes (additive model, dominant model and recessive model) with weight change were not found. There was no statistical association; all the P values were more than 0.05. Stratified analysis showed that there was no heterogeneity between rs7412 and rs405509 genotypes (additive model, dominant model and recessive model) and the risk of weight loss in baseline normal weight group and baseline overweight or obesity group (P>0.05). CONCLUSION: rs7412 and rs405509 of APOE increase the risk of weight loss in SZ patients treated by risperidone. Clinician should pay more attention to association between APOE gene rs7412 C>T, rs405509 A>C variations and risperidone-induced weight loss in normal body weight patients.

Key words: schizophrenia, apolipoprotein E, antipsychotic drugs, weight loss

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