Informace o publikaci

SDHC Methylation Pattern in Patients With Carney Triad

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DAUMOVA Magdalena SVAJDLER Marian FABIAN Pavel KŘEN Leoš BABANKOVA Iva JEŽOVÁ Marta SEDIVCOVA Monika VANECEK Tomas BEHENSKA Kristyna MICHAL Michal DAUM Ondrej

Rok publikování 2021
Druh Článek v odborném periodiku
Časopis / Zdroj APPLIED IMMUNOHISTOCHEMISTRY & MOLECULAR MORPHOLOGY
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
www https://journals.lww.com/appliedimmunohist/Abstract/2021/09000/SDHC_Methylation_Pattern_in_Patients_With_Carney.7.aspx
Doi http://dx.doi.org/10.1097/PAI.0000000000000920
Klíčová slova Carney triad; somatic mosaicism; SDHC; methylation
Popis Carney triad is a multitumor syndrome affecting almost exclusively young women in a nonfamilial setting, which manifests by multifocal gastric gastrointestinal stromal tumors, paragangliomas, and pulmonary chondroma. The Carney triad-associated tumors are characterized by a deficiency of the mitochondrial succinate dehydrogenase enzymatic complex. Recently, it has been observed that the deficiency results from epigenetic silencing of the SDHC gene by its promoter hypermethylation. To elucidate anatomic distribution of SDHC promoter methylation in Carney triad patients and thus to shed some light on the possible natural development of this epigenetic change, both neoplastic and available non-neoplastic tissues of 3 patients with Carney triad were tested for hypermethylation at the SDHC promoter site. SDHC promoter hypermethylation was proven in all tumors studied. Lack of SDHC epigenetic silencing in the non-neoplastic lymphoid and duodenal tissue (ie, tissues not involved in the development of Carney triad-associated tumors) together with the finding of SDHC promoter hypermethylation in the non-neoplastic gastric wall favors the hypothesis of postzygotic somatic mosaicism as the biological background of Carney triad; it also offers an explanation of the multifocality of gastrointestinal stromal tumors of the stomach occurring in this scenario as well. However, the precise mechanism responsible for the peculiar organ-specific distribution of Carney triad-associated tumors is still unknown.

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