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\nCardioNerds Dan Ambinder and Dr. Devesh Rai join cardiology fellows and National Lipid Association lipid scholars Dr. Jelani Grant from Johns Hopkins University and Dr. Alexander Razavi from Emory University. They discuss a case involving a patient with familial hypercholesterolemia. Dr. Archna Bajaj from University of Pennsylvania provides expert commentary. Drs. Jelani Grant and Alexander Razavi drafted notes. CardioNerds Intern Pacey Wetstein engineered episode audio.
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\nThis episode is part of a case reports series developed in collaboration with the National Lipid Association and their Lipid Scholarship Program, with mentorship from Dr. Daniel Soffer and Dr. Eugenia Gianos.
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\nA classic finding in patients with familial hypercholesterolemia is the presence of markedly elevated levels of total and low-density lipoprotein cholesterol (LDL-C) with an LDL-C concentration of 190 mg/dL or greater. However, severe hypercholesterolemia is not inevitably present, and many patients who carry this diagnosis may have lower LDL-C levels. This case history describes a young woman whose mother and brother met clinical and genetic criteria for heterozygous familial hypercholesterolemia but who had only a mild elevation in LDL-C, falling to 130 mg/dL after dietary intervention. Despite this finding, genetic testing revealed the presence of the same genetic variants as were noted in her mother and brother. In addition, a second genetic variant predisposing them to cholesterol gallstone formation was identified in all three family members. If genetic testing had not been performed, the diagnosis may have been missed or delayed, resulting in an increased risk for vascular complications associated with familial hypercholesterolemia. This case supports the value of genetic testing of family members of those with familial hypercholesterolemia, even when LDL-C levels are not severely elevated.
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