Expanding the clinical spectrum of primary coenzyme Q10 deficiency type 6: The first case with cardiomyopathy

We report a 19‐month‐old patient with cardiomyopathy as the first presenting feature of primary COQ10 deficiency‐6. This case expands the phenotypic spectrum of this disorder. Furthermore, it shows that genetic testing for primary COQ10 deficiency should be considered in patients with pediatric‐onset cardiomyopathy as it can guide treatment options.