Prevalence of Germline Variants in a Large Cohort of Japanese Patients with Pheochromocytoma and/or Paraganglioma

The high incidence of germline variants in pheochromocytoma and paraganglioma (PPGL) has been reported mainly in Europe, but not among Japanese populations in Asia. We aimed to study the prevalence of germline variants in Japanese PPGL patients and the genotype–phenotype correlation. We examined 370...

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Veröffentlicht in:Cancers 2021-08, Vol.13 (16), p.4014
Hauptverfasser: Yonamine, Masato, Wasano, Koichiro, Aita, Yuichi, Sugasawa, Takehito, Takahashi, Katsutoshi, Kawakami, Yasushi, Shimano, Hitoshi, Nishiyama, Hiroyuki, Hara, Hisato, Naruse, Mitsuhide, Okamoto, Takahiro, Matsuda, Tadashi, Kosugi, Shinji, Horiguchi, Kazuhiko, Tanabe, Akiyo, Watanabe, Atsushi, Kimura, Noriko, Nakamura, Eijiro, Sakurai, Akihiro, Shiga, Kiyoto, Takekoshi, Kazuhiro
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container_issue 16
container_start_page 4014
container_title Cancers
container_volume 13
creator Yonamine, Masato
Wasano, Koichiro
Aita, Yuichi
Sugasawa, Takehito
Takahashi, Katsutoshi
Kawakami, Yasushi
Shimano, Hitoshi
Nishiyama, Hiroyuki
Hara, Hisato
Naruse, Mitsuhide
Okamoto, Takahiro
Matsuda, Tadashi
Kosugi, Shinji
Horiguchi, Kazuhiko
Tanabe, Akiyo
Watanabe, Atsushi
Kimura, Noriko
Nakamura, Eijiro
Sakurai, Akihiro
Shiga, Kiyoto
Takekoshi, Kazuhiro
description The high incidence of germline variants in pheochromocytoma and paraganglioma (PPGL) has been reported mainly in Europe, but not among Japanese populations in Asia. We aimed to study the prevalence of germline variants in Japanese PPGL patients and the genotype–phenotype correlation. We examined 370 PPGL probands, including 43 patients with family history and/or syndromic presentation and 327 patients with apparently sporadic (AS) presentation. Clinical data and blood samples were collected, and the seven major susceptibility genes (MAX, SDHB, SDHC, SDHD, TMEM127, VHL, and RET) were tested using Sanger sequencing. Overall, 120/370 (32.4%) patients had pathogenic or likely pathogenic variants, with 81/327 (24.8%) in AS presentation. SDHB was the most frequently mutated gene (57, 15.4%), followed by SDHD (27, 7.3%), and VHL (18, 4.9%). The incidence of metastatic PPGL was high in SDHB carriers (21/57, 36.8%). A few unique recurrent variants (SDHB c.137G>A and SDHB c.470delT) were detected in this Japanese cohort, highlighting ethnic differences. In summary, almost a quarter of patients with apparently sporadic PPGL in Japan harboured germline variants of the targeted genes. This study reinforces the recommendation in Western guidelines to perform genetic testing for PPGL and genotype-based clinical decision-making in the Japanese population.
doi_str_mv 10.3390/cancers13164014
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We aimed to study the prevalence of germline variants in Japanese PPGL patients and the genotype–phenotype correlation. We examined 370 PPGL probands, including 43 patients with family history and/or syndromic presentation and 327 patients with apparently sporadic (AS) presentation. Clinical data and blood samples were collected, and the seven major susceptibility genes (MAX, SDHB, SDHC, SDHD, TMEM127, VHL, and RET) were tested using Sanger sequencing. Overall, 120/370 (32.4%) patients had pathogenic or likely pathogenic variants, with 81/327 (24.8%) in AS presentation. SDHB was the most frequently mutated gene (57, 15.4%), followed by SDHD (27, 7.3%), and VHL (18, 4.9%). The incidence of metastatic PPGL was high in SDHB carriers (21/57, 36.8%). A few unique recurrent variants (SDHB c.137G&gt;A and SDHB c.470delT) were detected in this Japanese cohort, highlighting ethnic differences. 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subjects Age
Catecholamines
Decision making
Genes
Genetic screening
Genotype & phenotype
Genotypes
Metastases
Metastasis
Paraganglioma
Patients
Phenotypes
Pheochromocytoma
Population studies
Tumors
VHL protein
title Prevalence of Germline Variants in a Large Cohort of Japanese Patients with Pheochromocytoma and/or Paraganglioma
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