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Case-Letter| Volume 348, ISSUE 2, P177-178, August 2014

A Novel PRKAR1A Gene Mutation Associated With Primary Pigmented Nodular Adrenocortical Disease

      Wrenocortical disease (PPNAD), a rare form of adrenocorticotropic hormone (ACTH)-independent Cushing's syndrome (CS).
      • Groussin L.
      • Horvath A.
      • Jullian E.
      • et al.
      A PRKAR1A mutation associated with primary pigmented nodular adrenocortical disease in 12 kindreds.
      PPNAD may be isolated (iPPNAD) or associated with Carney complex (CNC),
      • Groussin L.
      • Horvath A.
      • Jullian E.
      • et al.
      A PRKAR1A mutation associated with primary pigmented nodular adrenocortical disease in 12 kindreds.
      in which both cases inherited in an autosomal dominant manner. PRKAR1A gene, encoding the regulatory subunit type I-α (RIα) of the protein kinase A (PKA), was found responsible for PPNAD and CNC.
      • Horvath A.
      • Bertherat J.
      • Groussin L.
      • et al.
      Mutations and polymorphisms in the gene encoding regulatory subunit type 1-alpha of protein kinase A (PRKAR1A): an update.
      Mutations in PDE11A, PDE8B and CTNNB1 gene are found in patients with PPNAD.
      • Stratakis C.A.
      New genes and/or molecular pathways associated with adrenal hyperplasias and related adrenocortical tumors.
      • Tadjine M.
      • Lampron A.
      • Ouadi L.
      • et al.
      Detection of somatic β-catenin mutations in primary pigmented nodular adrenocortical disease (PPNAD).
      We herein report a novel PRKAR1A gene mutation associated with PPNAD in a family. This observation is beneficial in clarifying the molecular action of mutant PRKAR1A in tumor formation and genetic counseling.
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