PMID- 34939938 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220224 IS - 2049-3614 (Print) IS - 2049-3614 (Electronic) IS - 2049-3614 (Linking) VI - 11 IP - 1 DP - 2022 Jan 31 TI - Dutch founder SDHB exon 3 deletion in patients with pheochromocytoma-paraganglioma in South Africa. LID - 10.1530/EC-21-0560 [doi] LID - e210560 AB - OBJECTIVE: Screening studies have established genetic risk profiles for diseases such as multiple endocrine neoplasia type 1 (MEN1) and pheochromocytoma-paraganglioma (PPGL). Founder effects play an important role in the regional/national epidemiology of endocrine cancers, particularly PPGL. Founder effects in the Netherlands have been described for various diseases, some of which established themselves in South Africa due to Dutch emigration. The role of Dutch founder effects in South Africa has not been explored in PPGL. DESIGN: We performed a single-center study in South Africa of the germline genetic causes of isolated/syndromic neuroendocrine tumors. METHODS: Next-generation panel, Sanger sequencing and multiplex ligand-dependent probe amplification for endocrine neoplasia risk genes. RESULTS: From a group of 13 patients, we identified 6 with PPGL, 4 with sporadic or familial isolated pituitary adenomas, and 3 with clinical MEN1; genetic variants were identified in 9/13 cases. We identified the Dutch founder exon 3 deletion in SDHB in two apparently unrelated individuals with distinct ethnic backgrounds that had metastatic PPGL. Asymptomatic carriers with this Dutch founder SDHBexon 3 deletion were also identified. Other PPGL patients had variants in SDHB, and SDHD and three MEN1variants were identified among MEN1 and young-onset pituitary adenoma patients. CONCLUSIONS: This is the first identification of a Dutch founder effect for PPGL in South Africa. Awareness of the presence of this exon 3 SDHB deletion could promote targeted screening at a local level. Insights into PPGL genetics in South Africa could be achieved by studying existing patient databases for Dutch founder mutations in SDHx genes. FAU - Gordon, Debra M AU - Gordon DM AD - University of the Witwatersrand (WITS) Donald Gordon Medical Centre, Parktown, Johannesburg, South Africa. FAU - Beckers, Pablo AU - Beckers P AD - Department of Human Genetics, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. FAU - Castermans, Emilie AU - Castermans E AD - Department of Human Genetics, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. FAU - Neggers, Sebastian J C M M AU - Neggers SJCMM AD - Department of Endocrinology, Erasmus University Medical Center, Rotterdam, The Netherlands. FAU - Rostomyan, Liliya AU - Rostomyan L AD - Department of Endocrinology, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. FAU - Bours, Vincent AU - Bours V AD - Department of Human Genetics, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. FAU - Petrossians, Patrick AU - Petrossians P AD - Department of Endocrinology, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. FAU - Dideberg, Vinciane AU - Dideberg V AD - Department of Human Genetics, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. FAU - Beckers, Albert AU - Beckers A AD - Department of Endocrinology, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. FAU - Daly, Adrian F AU - Daly AF AUID- ORCID: 0000-0001-6130-2975 AD - Department of Endocrinology, Centre Hospitalier Universitaire de Liege, Liege Universite, Liege, Belgium. LA - eng PT - Journal Article DEP - 20220131 PL - England TA - Endocr Connect JT - Endocrine connections JID - 101598413 PMC - PMC8859937 OTO - NOTNLM OT - Dutch OT - Netherlands OT - SDHB OT - South Africa OT - founder mutation OT - paraganglioma OT - pheochromocytoma EDAT- 2021/12/24 06:00 MHDA- 2021/12/24 06:01 PMCR- 2021/12/23 CRDT- 2021/12/23 12:39 PHST- 2021/12/14 00:00 [received] PHST- 2021/12/23 00:00 [accepted] PHST- 2021/12/24 06:00 [pubmed] PHST- 2021/12/24 06:01 [medline] PHST- 2021/12/23 12:39 [entrez] PHST- 2021/12/23 00:00 [pmc-release] AID - EC-21-0560.R1 [pii] AID - EC-21-0560 [pii] AID - 10.1530/EC-21-0560 [doi] PST - epublish SO - Endocr Connect. 2022 Jan 31;11(1):e210560. doi: 10.1530/EC-21-0560.