D2I2.
genetic

Carnitine palmitoyltransferase II deficiency

Carnitine palmitoyltransferase II , sometimes shortened to CPT-II or CPT2, is an recessively inherited disorder characterized by an enzymatic defect that prevents long-chain fatty acids from being transported into the mitochondria for utilization as an energy source. The disorder presents in one of three forms: lethal , severe infantile hepatocardiomuscular and myopathic.

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Plain-language summary adapted from Wikipedia. Not medical advice.