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Review
. 2023 May;11(5):345-361.
doi: 10.1016/S2213-8587(23)00038-4. Epub 2023 Mar 31.

Clinical consensus guideline on the management of phaeochromocytoma and paraganglioma in patients harbouring germline SDHD pathogenic variants

Affiliations
Review

Clinical consensus guideline on the management of phaeochromocytoma and paraganglioma in patients harbouring germline SDHD pathogenic variants

David Taïeb et al. Lancet Diabetes Endocrinol. 2023 May.

Abstract

Patients with germline SDHD pathogenic variants (encoding succinate dehydrogenase subunit D; ie, paraganglioma 1 syndrome) are predominantly affected by head and neck paragangliomas, which, in almost 20% of patients, might coexist with paragangliomas arising from other locations (eg, adrenal medulla, para-aortic, cardiac or thoracic, and pelvic). Given the higher risk of tumour multifocality and bilaterality for phaeochromocytomas and paragangliomas (PPGLs) because of SDHD pathogenic variants than for their sporadic and other genotypic counterparts, the management of patients with SDHD PPGLs is clinically complex in terms of imaging, treatment, and management options. Furthermore, locally aggressive disease can be discovered at a young age or late in the disease course, which presents challenges in balancing surgical intervention with various medical and radiotherapeutic approaches. The axiom-first, do no harm-should always be considered and an initial period of observation (ie, watchful waiting) is often appropriate to characterise tumour behaviour in patients with these pathogenic variants. These patients should be referred to specialised high-volume medical centres. This consensus guideline aims to help physicians with the clinical decision-making process when caring for patients with SDHD PPGLs.

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Conflict of interest statement

Declaration of interests DT has received personal honoraria for lectures and consulting and support for meeting attendance from Advanced Accelerator Applications and Novartis. CL-L has received personal honoraria for lectures and support for meeting attendance from Ipsen. SN has received research grant to their institution from German Research Foundation. LA has received personal honoraria for lectures from Servier and Ipsen. ALE has received fees for consulting from WL Gore and fees for participation on an advisory board from Artivion. ML has received research grants to their institution from Arbor, Bristol Myers Squibb, Accuray, Biohaven, and Urogen; honoraria for research consulting from VBI Vaccines, InCephalo Therapeutics, Merck, Pyramid Bio, Insightec, Biohaven, Sanianoia, Hemispherian, Novocure, Noxxon, InCando, Century Therapeutics, and CraniUs; honoraria for non-research consulting from Stryker; is a shareholder of Egret Therapeutics; holds patents for the combination of immunotherapy and local chemotherapy to treat malignancies (10864180) and focused radiation to augment immune-based strategies against cancer (9132281); and is a member of the data and safety monitoring board of Cellularity. ELP has received fees for participation on an advisory board from Vysioneer. RTC has received personal honoraria for lectures from Novartis, support for meeting attendance from Ipsen, and serves as a board member for the Society for Endocrinology clinical committee and the UK and Ireland Neuroendocrine Tumour Society clinical committee. JKL has received honoraria for lectures from and is a consultant for Stryker. ERM has received fees for consulting and personal honoraria for lectures from MSD. NN has received an intramural research grant from the National Institutes of Health. NP-T has received research grants to their institution from Innervate, Clarity pharma; fees for consulting from Progenics, Lantheus, and Innervate Lifesciences. NP-T is a member of the data and safety monitoring board of Progenics and Lantheus, and serves as a board member for Society of Nuclear Medicine and Molecular Imaging. All other authors declare no competing interests.

Figures

Figure 1.
Figure 1.. Different potential locations of HNPGLs
HNPGL may arise from the carotid bifurcation (purple), the nodose ganglion (green), jugular bulb (pink), and middle ear (red) and invade adjacent structures within the head and neck. Arrows indicate the potential patterns of local tumor extension for a given tumor type.
Figure 2.
Figure 2.. Current synthesis of the important clinical facts that contribute to the decision-making process
cf means refer to; MRA, magnetic resonance angiography; SSTR PET/CT, somatostatin receptor PET/CT showing tumor multifocality; M0, absence of metastasis; M1, presence of metastasis; MTY, plasma 3-methoxytyramine; TKI, tyrosine kinase inhibitors.
Figure 3.
Figure 3.. Management of patients with SDHD-related HNPGLs with special emphasis on tumor multifocality
Jugular PGLs are also named jugulotympanic PGLs; SRS, stereotactic radiosurgery (preferred radiotherapeutic option); RT, hypofractionated radiotherapy; CN, cranial neuropathy; PD, progressive disease; MET, metastatic; TRT, targeted radionuclide therapy; Adx, adrenalectomy; HNPGLs, head and neck paragangliomas; PGL, paraganglioma; VCT, vocal cord palsy *For patients without preoperative neuropathy #Some authors prefer to start on the side of the larger tumor
Figure 4.
Figure 4.
Management of patients with metastatic SDHD-related PPGLs TKI, tyrosine kinase inhibitors * In patients in whom CVD is not tolerated, not wished by the patient or if there are contraindications to CVD, tyrosine kinase inhibitors (sunitinib) or temozolomide can be used as alternative agents, carefully evaluating their adverse effects.

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