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. 2017 Apr 20;40(5):685–693. doi: 10.1007/s10545-017-0042-6

Table 1.

Mitochondrial respiratory chain (MRC) complex activities and associated genetic mutations

Mutation Complex I–IV activity (enzyme assay) Total
Decreased Not decreased
nDNA 19 4 23
mtDNA 22 8 30
None confirmed 34 19 53
Total 75 31 106

nDNA nuclear DNA, mtDNA mitochondrial DNA