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The plasma levels of HVA and MHPG according to the COMT Val158Met genotype in the patients with major depressive disorder and the healthy control subjects.
Notes: (A) At baseline. (B) After 8 weeks of treatment. Data are presented as mean ± standard deviation.
Abbreviations: HVA, homovanillic acid; MHPG, 3-methoxy-4-hydroxyphenylglycol; COMT, catechol-O-methyltransferase; Val, valine; Met, methionine; ns, not significant.
