Assessment of associations between mitochondrial DNA haplogroups and attention deficit and hyperactivity disorder in Korean children

Publication date: Available online 10 November 2018Source: MitochondrionAuthor(s): In Wook Hwang, Bit Na Kwon, Hyung Jun Kim, Seung Hun Han, Noo Ri Lee, Myung Ho Lim, Ho Jang Kwon, Han Jun JinAbstractAttention deficit hyperactivity disorder (ADHD) is a multifactorial disorder with multiple environmental and biological etiologies, including genetic factors. Until now, several genetic variants have been reported to be significantly associated with ADHD. Recently, the relationship between mitochondrial DNA (mtDNA) haplogroups and psychiatric disorders such as schizophrenia has also been reported. However, currently there are no reports pertaining to the genetic association between mtDNA haplogroups and ADHD. Therefore, we performed an mtDNA haplogroup analysis of a total of 472 Korean children (150 Children with ADHD and 322 controls). The 20 East Asian specific mtDNA haplogroups were determined using the SNaPshot assay. We also sequenced the displacement loop (D-loop) region, position 15,971–613. Our results showed that haplogroup B4 was significantly associated with ADHD (OR, 1.90; 95% CI, 1.055–3.429; p = 0.031). A marginally significant association was found in subjects with ADHD and haplogroup B5 (OR, 0.26; 95% CI, 0.059–1.139; p = 0.041). When stratified based on gender, an association was also observed between haplogroup B5 and boys diagnosed with ADHD (OR, 0.17; 95% CI, 0.022–1.340; p = 0.048). Compared with boys, girls with ADHD carried an excess of ...
Source: Mitochondrion - Category: Biochemistry Source Type: research