Ageing is a deteriorative and unstoppable functional decline that groups a progressive loss of physiological integrity, an impaired function and an increased vulnerability to disease and death.S1,S2 Time‐dependent accumulation of cellular damage and loss of biological fitness is considered the main cause of ageing.S1 In humans, ADCK2 haploinsufficiency produces an adult‐onset mitochondrial myopathy, defective fatty acid metabolism and premature physical incapacity.32 The gene discussed is ADCK2; the disease is Adult onset.