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Katagiri K, Shiga K, Ikeda A, Saito D, Oikawa SI, Tsuchida K, Miyaguchi J, Kusaka T, Tamura A, Nakayama M, Izumisawa M, Yoshida K, Ogasawara K, Takahashi F. The Influence of Young Age on Difficulties in the Surgical Resection of Carotid Body Tumors. Cancers (Basel) 2021; 13:cancers13184565. [PMID: 34572792 PMCID: PMC8465132 DOI: 10.3390/cancers13184565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/04/2021] [Accepted: 09/08/2021] [Indexed: 01/02/2023] Open
Abstract
Simple Summary The aim of this study was to reveal the factors affecting the complexity and difficulties in performing surgery to resect carotid body tumors (CBTs). We analyzed 20 patients with 21 CBTs. We used the “same day surgery” procedure, including preoperative embolization of the feeding arteries in the morning and resection surgery in the afternoon of the same day. Four patients underwent resection of the carotid artery, followed by reconstruction. These four patients were between 18 to 23 years of age at the time of surgery. The mean blood loss and operative time in these patients differed significantly from those in older patients. These results indicated that young age may influence the difficulties faced in CBT surgery, resulting in an increased risk of carotid artery resection. The results obtained from our study could help surgeons safely and effectively perform resection surgery for CBTs. Abstract This study evaluated patient characteristics that affect the complexity and difficulties of performing surgery to resect carotid body tumors (CBTs). We retrospectively reviewed the medical records of 20 patients with 21 CBTs who were enrolled in the study. The median patient age was 46 years and the mean tumor diameter was 37.6 mm. The mean blood loss and operative time were 40.3 mL and 183 min, respectively. Four patients underwent resection of the carotid artery followed by reconstruction. These four patients were between 18 to 23 years of age at the time of surgery. The mean blood loss and operative time in these patients were 166 mL and 394 min, respectively, which differed significantly from those of older patients. Therefore, young age influenced the difficulties faced in surgical resection of CBT, with an increased risk of blood loss and carotid artery resection.
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Affiliation(s)
- Kartsunori Katagiri
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
| | - Kiyoto Shiga
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
- Correspondence: ; Tel.: +81-19-613-7111
| | - Aya Ikeda
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
| | - Daisuke Saito
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
| | - Shin-ichi Oikawa
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
| | - Kodai Tsuchida
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
| | - Jun Miyaguchi
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
| | - Takahiro Kusaka
- Department of Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.K.); (A.I.); (D.S.); (S.-i.O.); (K.T.); (J.M.); (T.K.)
| | - Akio Tamura
- Department of Radiology, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (A.T.); (M.N.); (M.I.)
| | - Manabu Nakayama
- Department of Radiology, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (A.T.); (M.N.); (M.I.)
| | - Mitsuru Izumisawa
- Department of Radiology, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (A.T.); (M.N.); (M.I.)
| | - Kenji Yoshida
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.Y.); (K.O.)
| | - Kuniaki Ogasawara
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan; (K.Y.); (K.O.)
| | - Fumiaki Takahashi
- Division of Medical Engineering, Department of Information Science, Iwate Medical University School of Medicine, Yahaba, Morioka 028-3695, Iwate, Japan;
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Prevalence of Germline Variants in a Large Cohort of Japanese Patients with Pheochromocytoma and/or Paraganglioma. Cancers (Basel) 2021; 13:cancers13164014. [PMID: 34439168 PMCID: PMC8394264 DOI: 10.3390/cancers13164014] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/02/2021] [Accepted: 08/04/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Pheochromocytoma/paraganglioma (PPGL) has been recognised as one of the most frequent inherited tumours with genetic heterogeneity based on studies in Caucasian populations. Early identification of germline variants is crucial for accurate treatment and follow-up in affected patients and relatives. However, there are only a few large cohort studies in Asia and none from the Japanese population. In this first comprehensive study of Japanese patients with PPGL, we found one in four PPGLs with apparently sporadic presentation harboured germline variant in any of the seven susceptibility genes (MAX, SDHB, SDHC, SDHD, TMEM127, VHL, and RET). SDHB was the most frequently mutated gene and was strongly associated with metastatic PPGLs. Our findings emphasise the importance of genetic testing in determining appropriate treatment and follow-up strategies for patients and relatives. Abstract 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.
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Hirose R, Tsurutani Y, Sugisawa C, Inoue K, Suematsu S, Nagata M, Hasegawa N, Kakuta Y, Yonamine M, Takekoshi K, Kimura N, Saito J, Nishikawa T. Hereditary pheochromocytoma/paraganglioma syndrome with a novel mutation in the succinate dehydrogenase subunit B gene in a Japanese family: two case reports. J Med Case Rep 2021; 15:282. [PMID: 34020699 PMCID: PMC8140422 DOI: 10.1186/s13256-021-02852-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 04/05/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Pheochromocytoma and paraganglioma caused by succinate dehydrogenase gene mutations is called hereditary pheochromocytoma/paraganglioma syndrome. In particular, succinate dehydrogenase subunit B mutations are important because they are strongly associated with the malignant behavior of pheochromocytoma and paraganglioma . This is a case report of a family of hereditary pheochromocytoma/paraganglioma syndrome carrying a novel mutation in succinate dehydrogenase subunit B. CASE PRESENTATION A 19-year-old Japanese woman, whose father died of metastatic paraganglioma, was diagnosed with abdominal paraganglioma, and underwent total resection. Succinate dehydrogenase subunit B genetic testing detected a splice-site mutation, c.424-2delA, in her germline and paraganglioma tissue. Afterwards, the same succinate dehydrogenase subunit B mutation was detected in her father's paraganglioma tissues. In silico analysis predicted the mutation as "disease causing." She is under close follow-up, and no recurrence or metastasis has been observed for 4 years since surgery. CONCLUSIONS We detected a novel succinate dehydrogenase subunit B mutation, c.424-2delA, in a Japanese family afflicted with hereditary pheochromocytoma/paraganglioma syndrome and found the mutation to be responsible for hereditary pheochromocytoma/paraganglioma syndrome. This case emphasizes the importance of performing genetic testing for patients with pheochromocytoma and paraganglioma suspected of harboring the succinate dehydrogenase subunit B mutation (that is, metastatic, extra-adrenal, multiple, early onset, and family history of pheochromocytoma and paraganglioma) and offer surveillance screening to mutation carriers.
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Affiliation(s)
- Rei Hirose
- Endocrinology and Diabetes Center, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
| | - Yuya Tsurutani
- Endocrinology and Diabetes Center, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan.
| | - Chiho Sugisawa
- Endocrinology and Diabetes Center, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
| | - Kosuke Inoue
- Endocrinology and Diabetes Center, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan.,Department of Epidemiology, UCLA Fielding School of Public Health, 650 Charles E. Young Dr. South, 16-035 Center for Health Sciences, Los Angeles, CA, USA
| | - Sachiko Suematsu
- Endocrinology and Diabetes Center, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
| | - Maki Nagata
- Department of Urology, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
| | - Naoki Hasegawa
- Department of Pathology, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
| | - Yukio Kakuta
- Department of Pathology, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
| | - Masato Yonamine
- Laboratory of Laboratory/Sports Medicine, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Kazuhiro Takekoshi
- Laboratory of Laboratory/Sports Medicine, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Noriko Kimura
- Department of Diagnostic Pathology, National Hospital Organization Hakodate Hospital, 18-16 Kawahara-cho, Hakodate, Hokkaido, 041-8512, Japan
| | - Jun Saito
- Endocrinology and Diabetes Center, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
| | - Tetsuo Nishikawa
- Endocrinology and Diabetes Center, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama, Kanagawa, 222-0036, Japan
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Kitagawa T, Ohtonari T, Yamamoto J, Nishihara N, Nishigaki M, Takekoshi K. Longest survival by the combination of radiation-therapy and resection in patient with metastatic spinal paragangliomas from primary-neck lesion with succinate dehydrogenase subunit B (SDHB) mutation. Endocr J 2021; 68:81-86. [PMID: 32863293 DOI: 10.1507/endocrj.ej20-0292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Metastatic paraganglioma (MPG) of the spine is a rare condition, with no established management. Herein, we report the longest survival case of a primary neck tumor that caused spinal MPG with a succinate dehydrogenase subunit B (SDHB) mutation (c.470delT, p.L157X) which could have promoted its malignancy. This male patient initially presented with a left neck PG which was diagnosed by a biopsy when he was 54 years-old. Simultaneously performed additional examinations revealed the spinal metastatic tumors on the T5-7 vertebrae and L3 vertebra-sacrum. These primary neck and metastatic spinal tumors' growths were once suppressed under the radiation therapy. Nineteen years later, he developed acute progressive paraparesis due to a mass located at the T2-3 level, tightly compressing the spinal cord, and protruding into the left thoracic cavity. We resected the maximum possible area of tumor in the spinal canal, confirmed MPG by histological examination, and then, we administered radiation therapy of 40 Gy in 20 fractions. Eventually, the patient was able to walk unaided with no evidential tumor recurrence for 3 years after treatment. Generally, clinical feature of MPG with SDHB mutation from abdominal lesion is thought to be poor prognosis. However, our case suggests the possibility of long-term control of spinal MPG with the adequate combination of radiation therapy and resection if metastatic lesions from primary-neck lesion with an SDHB mutation are remained to spine.
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Affiliation(s)
- Takehiro Kitagawa
- Department of Neurosurgery, University of Occupational and Environmental Health, Kitakyushu, Fukuoka 807-8555, Japan
- Department of Spinal Surgery, Brain Attack Center, Ota Memorial Hospital, Fukuyama, Hiroshima 720-0825, Japan
| | - Tatsuya Ohtonari
- Department of Spinal Surgery, Brain Attack Center, Ota Memorial Hospital, Fukuyama, Hiroshima 720-0825, Japan
| | - Junkoh Yamamoto
- Department of Neurosurgery, University of Occupational and Environmental Health, Kitakyushu, Fukuoka 807-8555, Japan
| | - Nobuharu Nishihara
- Department of Spinal Surgery, Brain Attack Center, Ota Memorial Hospital, Fukuyama, Hiroshima 720-0825, Japan
| | - Masakazu Nishigaki
- Department of Nursing, Human Health Sciences, Kyoto University, Kyoto, Kyoto 606-8507, Japan
| | - Kazuhiro Takekoshi
- Division of Sports Medicine/Laboratory Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
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Takeshima K, Ariyasu H, Uraki S, Kitahara C, Morita S, Inaba H, Iwakura H, Warigaya K, Murata SI, Yamazaki Y, Sasano H, Akamizu T. Head and Neck Paraganglioma Atypically Carrying a Succinate Dehydrogenase Subunit B Mutation (L157X). Intern Med 2020; 59:1167-1171. [PMID: 32023584 PMCID: PMC7270757 DOI: 10.2169/internalmedicine.3607-19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 53-year-old woman was admitted to a hospital for gradual left-ear hearing loss over 2 years. Head computed tomography revealed a 2-cm mass along the left jugular bulb and another at the right carotid bulb. The right tumor was resected; the pathological diagnosis was carotid body paraganglioma. Mutations of succinate dehydrogenase (SDH) were suspected, but SDHB staining remained in the tumor. Genetic testing identified a known SDHB mutation (L157X). The patient had head and neck paraganglioma with an SDHB mutation (L157X) more typical of an SDHD mutation. SDHB immunohistochemistry is useful for detecting SDHx mutations, but careful interpretation is needed.
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Affiliation(s)
- Ken Takeshima
- First Department of Internal Medicine, Wakayama Medical University, Japan
| | - Hiroyuki Ariyasu
- First Department of Internal Medicine, Wakayama Medical University, Japan
| | - Shinsuke Uraki
- First Department of Internal Medicine, Wakayama Medical University, Japan
| | - Chie Kitahara
- Department of Pathology, Tohoku University Graduate School of Medicine, Japan
| | - Shuhei Morita
- First Department of Internal Medicine, Wakayama Medical University, Japan
| | - Hidefumi Inaba
- First Department of Internal Medicine, Wakayama Medical University, Japan
| | - Hiroshi Iwakura
- First Department of Internal Medicine, Wakayama Medical University, Japan
| | - Kenji Warigaya
- Department of Human Pathology, Wakayama Medical University, Japan
| | - Shin-Ichi Murata
- Department of Human Pathology, Wakayama Medical University, Japan
| | - Yuto Yamazaki
- Department of Pathology, Tohoku University Graduate School of Medicine, Japan
| | - Hironobu Sasano
- Department of Pathology, Tohoku University Graduate School of Medicine, Japan
| | - Takashi Akamizu
- First Department of Internal Medicine, Wakayama Medical University, Japan
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Takeichi N, Midorikawa S, Watanabe A, Naing BT, Tamura H, Wakakuri-Kano T, Ishizaki A, Sugihara H, Nissato S, Saito Y, Aita Y, Ishii KA, Igarashi T, Kawakami Y, Hara H, Ikeda T, Shimizu K, Suzuki S, Shimano H, Kawamoto M, Shimada T, Watanabe T, Oikawa S, Takekoshi K. Identical germline mutations in the TMEM127 gene in two unrelated Japanese patients with bilateral pheochromocytoma. Clin Endocrinol (Oxf) 2012; 77:707-14. [PMID: 22541004 DOI: 10.1111/j.1365-2265.2012.04421.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Recently, TMEM127 was shown to be a new pheochromocytoma susceptibility gene; this is consistent with its function as a tumour suppressor gene (Journal of Clinical Endocrinology and Metabolism, 2009, 94, 2817). Most pheochromocytomas arise from the adrenal medulla, and in approximately half of the cases, the tumours are bilateral (Journal of Clinical Endocrinology and Metabolism, 2009, 94, 2817; Journal of the American Medical Association, 2004, 292, 943; Human Mutation, 2010, 31, 41; Science, 2009, 325, 1139). The aim of the present study was to determine whether TMEM127 mutations are involved in the pathogenesis of pheochromocytomas/paragangliomas in Japanese subjects. PATIENTS AND METHODS For this study, 74 unrelated patients with pheochromocytoma/paraganglioma who tested negative for mutations and deletions in RET, VHL, SDHB and SDHD were recruited through a multi-institutional collaborative effort in Japan. The TMEM127 gene sequence was determined in their germline DNA, and tumour DNA was analysed for the loss of heterozygosity. In addition, their TMEM127 gene sequences were compared with sequences from 114 normal healthy, ethnically matched controls. RESULTS Among the 74 eligible patients, two unrelated patients (2·7%) with bilateral adrenal pheochromocytoma were found to have an identical germline TMEM127 mutation (c.116_119delTGTC, p.Ile41ArgfsX39) associated with 2q deletion loss of heterozygosity, which was also previously described in a Brazilian case (Journal of the American Medical Association, 2004, 292, 943). We also determined that none of the 114 normal healthy controls had this deletion mutation. CONCLUSION This is the first report showing that TMEM127 mutation plays a pathological role in pheochromocytoma in an Asian population. Although our surveillance is limited, the prevalence and the phenotype of this gene mutation appear to be similar to those reported in previous studies.
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Affiliation(s)
- Naomi Takeichi
- Division of Endocrinology and Metabolism, Department of Medicine, Nippon Medical School, Tsukuba, Japan
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Takekoshi K, Kawakami Y. [Endocrine disease: progress in diagnosis and treatment topics: I. Progress in diagnosis; 3. The handling of adrenal disease and problems, 2) Malignant pheochromocytoma and multiple endocrine neoplasia (MEN), emphasizing importance of genetic testing]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 2012; 101:949-958. [PMID: 22730722 DOI: 10.2169/naika.101.949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- Kazuhiro Takekoshi
- University of Tsukuba (Institute of Clinical Medicine), Molecular Laboratory Medicine, Graduate School of Comprehensive Human Sciences, Japan
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Sato H, Kanai G, Hirabayshi K, Kajiwara H, Itoh J, Osamura RY. L157X nonsense mutation of the succinate dehydrogenase subunit B gene in a Japanese patient with right paraaortic paraganglioma. Endocrine 2010; 38:18-23. [PMID: 20960097 DOI: 10.1007/s12020-010-9365-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Accepted: 06/22/2010] [Indexed: 02/06/2023]
Abstract
Nuclear genes succinate dehydrogenase B subunit and succinate dehydrogenase D subunit, which encode two mitochondrial complex II subunits, are associated with the development of familial paraganglioma (PGL). Succinate dehydrogenase B subunit gene mutation is highly associated with extraadrenal PGL and subsequent distant metastasis. We describe the case of a 29-year-old Japanese man with a 3-year history of hypertension, headache, and palpitation. Endocrinological examinations showed that the patient had elevated levels of catecholamines, and imaging studies revealed a right paraaortic PGL without distant metastases. The PGL was surgically removed. Genetic analysis of the patient showed a heterozygous thymine deletion at position 470 (c.470delT) in exon 5 of the succinate dehydrogenase B subunit gene complementary DNA. This thymine deletion changed TTG (leucine) to TGA (stop codon) at codon 157 (L157X). It remains unclear whether this mutation was associated with PGL malignancy because the patient has had no metastases for the past 3 years. It has been recently reported that L157X is associated with malignant paraaortic PGL. Thus, strict follow-up is required because this succinate dehydrogenase B subunit gene's nonsense mutation (L157X) may be related to the malignancy.
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Affiliation(s)
- Haruhiro Sato
- Department of Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
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Kodama H, Iihara M, Nissato S, Isobe K, Kawakami Y, Okamoto T, Takekoshi K. A large deletion in the succinate dehydrogenase B gene (SDHB) in a Japanese patient with abdominal paraganglioma and concomitant metastasis. Endocr J 2010; 57:351-6. [PMID: 20379037 DOI: 10.1507/endocrj.k09e-324] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Recently, mutations in nuclear genes encoding two mitochondrial complex II subunit proteins, Succinate dehydrogenase D (SDHD) and SDHB, have been found to be associated with the development of familial pheochromocytomas and paragangliomas (hereditary pheochromocytoma/paraganglioma syndrome: HPPS). Growing evidence suggests that the mutation of SDHB is highly associated with abdominal paraganglioma and the following distant metastasis (malignant paraganglioma). In the present study, we used multiplex ligation dependent probe amplification (MLPA) analysis to identify a large heterozygous SDHB gene deletion encompassing sequences corresponding to the promoter region, in addition to exon 1 and exon 2 malignant paraganglioma patient in whom previously characterized SDHB mutations were undetectable. This is the first Japanese case report of malignant paraganglioma, with a large SDHB deletions. Our present findings strongly support the notion that large deletions in the SDHB gene should be considered in patients lacking characterized SDHB mutations.
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Affiliation(s)
- Hitomi Kodama
- Departments of Endocrine Surgery, Tokyo Women' s Medical University, Tokyo, Japan
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