Key result
A novel mutation (c.642dupT) in the PRKAR1A gene was identified in a 23-year-old woman with Carney complex, resulting in a premature stop codon and loss of tumor suppressive activity.
Case Report (n=1)
Identifies a novel PRKAR1A mutation (c.642dupT) in a patient with Carney complex presenting with recurrent atrial myxoma and multiple endocrine tumors.
Alerts clinicians to CNC in multisystem tumors; extends PRKAR1A spectrum but leaves pathogenicity open.
SUMMARY Carney complex (CNC) is a rare syndrome of multiple endocrine and non-endocrine tumors. In this paper we present a 23-year-old Iranian woman with CNC who harbored a novel mutation (c.642dupT) in PRKAR1A gene. This patient presented with pituitary macroadenoma, acromegaly, recurrent atrial myxoma, Cushing's syndrome secondary to primary pigmented nodular adrenocortical disease and pigmented schwanoma of the skin. PRKAR1A gene was PCR amplified using genomic DNA and analyzed for sequence variants which revealed the novel mutation resulting in substitution of amino acid cysteine instead of the naturally occurring valine in the peptide chain and a premature stop codon at position 18 (V215CfsX18). This change leads to development of tumors in different organs due to lack of tumor suppressive activity secondary to failure of synthesis of the related protein.
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Ghazi et al. (2021) conducted a case report in Carney complex (n=1). PRKAR1A gene mutation (c.642dupT) was evaluated on Identification of PRKAR1A gene mutation. A novel mutation (c.642dupT) in the PRKAR1A gene was identified in a 23-year-old woman with Carney complex, resulting in a premature stop codon and loss of tumor suppressive activity.
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