Table 2 BDNF Val66Met gene distribution in heroin-dependent patients and healthy controls

From: The BDNF Val66Met polymorphism and plasma brain-derived neurotrophic factor levels in Han Chinese heroin-dependent patients

Group

Healthy Controls

Heroin-Dependent Patients

  
 

(n = 102)

(n = 172)

χ2

p

Genotype

  

3.109

0.211a

 Met/Met [n (%)]

26 (25.5)

49 (28.5)

  

 Met/Val [n (%)]

43 (42.2)

84 (48.8)

  

 Val/Val [n (%)]

33 (32.4)

39 (22.7)

  

Met/Val allele frequency

  

2.058

0.151a

 Met [n (%)]

95 (46.6)

182 (52.9)

  

 Val [n (%)]

109 (53.4)

162 (47.1)

  
  1. BDNF, brain-derived neurotrophic factor.
  2. aCompared with healthy controls (χ2 test).
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