A 39-year-old woman was referred to the cancer genetics outpatient clinic for a clinical diagnosis of Carney complex (CNC) in her deceased brother. The patient had some characteristic clinical features such as periorbital lentigines and coarse facial features, suggestive of CNC; however, she did not meet major diagnostic criteria for CNC. Previous extensive investigations revealed a mild insulin-like growth factor 1 elevation, a stable left adrenal gland adenoma and a slightly enlarged pituitary gland. Single gene sequencing confirmed a novel pathogenic mutation in the PRKAR1A gene. This case, to our knowledge, is the first report of this mutation identified in a family of French-Canadian origin. This report broadens our understanding of the genotypic and phenotypic spectrum of this rare disease, while it highlights the value of a multidisciplinary approach in rare diseases, for genetic testing facilitated a timely diagnosis and enabled the initiation of early surveillance of CNC-related manifestations in our patient.
- genetic screening / counselling
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