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Course: Transthyretin Genetic Testing

CME Credits: 1.00

Released: 2021-05-12

A 40-year-old woman recently participated in a research study that incidentally identified a pathogenic variant in the transthyretin (TTR) (OMIM ) gene. She was reported to have a single heterozygous nucleotide variant leading to substitution of serine for tyrosine at amino acid position 97 (Ser97Tyr, SNP ). The patient is of European descent, and her medical history was notable for carpal tunnel syndrome. She was asymptomatic from a cardiopulmonary standpoint. She reported no family history of amyloidosis, but her paternal grandfather died of heart disease at age 52 years. Her physical examination results showed a blood pressure of 112/76 mm Hg and heart rate of 79/min. Her cardiovascular examination results were unremarkable, with a jugular venous pressure of 5 cm H2O, no lower extremity edema, and normal heart sounds.


Educational Objective
To understand how to interpret the results of diagnostic tests and apply them clinically.


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