In 2007, evaluation for a genetic cause of Carney triad through comparative genomic hybridization of DNA samples from 41 patients, with the aim of detecting common gene abnormalities associated with paragangliomas (inactivating mutations in SDHA, SDHB, SDHC, and SDHD, or collectively SDHx) and GISTs (activating mutations in KIT and PDGFRA), did not identify abnormalities in these genes [80]. This evidence concerns the gene SDHA and paraganglioma.