American journal of preventive cardiology · 2024
Expanded genetic testing in familial hypercholesterolemia-A single center's experience.
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Brown Emily E, Byrne Kathleen, Michos Erin D, Leucker Thorsten M, Marvel Francoise, Jones Steven R, Martin Seth S, Arvanitis Marios
Аннотация
OBJECTIVE: Assess the yield of genetic testing for pathogenic variants in ABCG5, ABCG8, LIPA, and APOE in individuals with personal and family histories suggestive of familial hypercholesterolemia.
METHODS: Retrospective review of patients seen in the Advanced Lipid Disorders Clinic at Johns Hopkins.
RESULTS: In the lipid clinic at a single center during the years 2015-2023, 607 patients underwent genetic testing for familial hypercholesterolemia, of which 263 underwent the expanded genetic testing for sitosterolemia. Eighty-eight patients had genetic testing which included APOE, and 22 patients had testing which included LIPA. Among these, one patient was identified to have a pathogenic variant in APOE and another patient with a pathogenic variant in ABCG5 (0.7 % yield). The frequency of a positive result was double that of a variant of uncertain significance.
CONCLUSION: These data suggest in rare cases expanded testing can provide answers for patients and families with a minimal likelihood of a variant of uncertain significance.
METHODS: Retrospective review of patients seen in the Advanced Lipid Disorders Clinic at Johns Hopkins.
RESULTS: In the lipid clinic at a single center during the years 2015-2023, 607 patients underwent genetic testing for familial hypercholesterolemia, of which 263 underwent the expanded genetic testing for sitosterolemia. Eighty-eight patients had genetic testing which included APOE, and 22 patients had testing which included LIPA. Among these, one patient was identified to have a pathogenic variant in APOE and another patient with a pathogenic variant in ABCG5 (0.7 % yield). The frequency of a positive result was double that of a variant of uncertain significance.
CONCLUSION: These data suggest in rare cases expanded testing can provide answers for patients and families with a minimal likelihood of a variant of uncertain significance.