KCNH2 and catecholaminergic polymorphic ventricular tachycardia: We have not observed any episodes of ventricular tachycardia indicating CPVT on her loop recorder or during the admission, which raises the question as to what are the possible effects of this gene polymorphism on the patient. If she chooses to become pregnant, we are unsure what the consequence of both KCNH2 and RYR2 gene polymorphism would be for the patient and her offspring.