Of these, the ETFDH stop gain variant p.Trp286Ter (rs1235904433, p = 8 × 10−15 with hexanoylcarnitine) and the MCCC2 stop lost variant p.Ter564GlnextTer3 (rs751970792, p = 2 × 10−12 with hydroxyvalerylcarnitine) have been linked to the respective diseases glutaric acidemia type II and 3-methylcrotonylglycinuria but have not been identified in a GWAS previously. Here, ETFDH is linked to multiple acyl-CoA dehydrogenase deficiency.