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Veronica Kieffer
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Kate Davies University Hospitals of Leicester NHS Trust, Great Ormond Street Hospital for Children NHS Trust, Central Manchester University Hospitals NHS Foundation Trust, NHS Grampian, Portsmouth Hospitals NHS Trust, Salford Royal Hospitals Foundation Trust, Heart of England NHS Foundation Trust, The London Clinic, Department of Diabetes and Endocrinology, Leicester Royal Infirmary, Leicester, LE1 5WW, UK

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Christine Gibson University Hospitals of Leicester NHS Trust, Great Ormond Street Hospital for Children NHS Trust, Central Manchester University Hospitals NHS Foundation Trust, NHS Grampian, Portsmouth Hospitals NHS Trust, Salford Royal Hospitals Foundation Trust, Heart of England NHS Foundation Trust, The London Clinic, Department of Diabetes and Endocrinology, Leicester Royal Infirmary, Leicester, LE1 5WW, UK

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Morag Middleton University Hospitals of Leicester NHS Trust, Great Ormond Street Hospital for Children NHS Trust, Central Manchester University Hospitals NHS Foundation Trust, NHS Grampian, Portsmouth Hospitals NHS Trust, Salford Royal Hospitals Foundation Trust, Heart of England NHS Foundation Trust, The London Clinic, Department of Diabetes and Endocrinology, Leicester Royal Infirmary, Leicester, LE1 5WW, UK

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Jean Munday University Hospitals of Leicester NHS Trust, Great Ormond Street Hospital for Children NHS Trust, Central Manchester University Hospitals NHS Foundation Trust, NHS Grampian, Portsmouth Hospitals NHS Trust, Salford Royal Hospitals Foundation Trust, Heart of England NHS Foundation Trust, The London Clinic, Department of Diabetes and Endocrinology, Leicester Royal Infirmary, Leicester, LE1 5WW, UK

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Shashana Shalet University Hospitals of Leicester NHS Trust, Great Ormond Street Hospital for Children NHS Trust, Central Manchester University Hospitals NHS Foundation Trust, NHS Grampian, Portsmouth Hospitals NHS Trust, Salford Royal Hospitals Foundation Trust, Heart of England NHS Foundation Trust, The London Clinic, Department of Diabetes and Endocrinology, Leicester Royal Infirmary, Leicester, LE1 5WW, UK

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Lisa Shepherd University Hospitals of Leicester NHS Trust, Great Ormond Street Hospital for Children NHS Trust, Central Manchester University Hospitals NHS Foundation Trust, NHS Grampian, Portsmouth Hospitals NHS Trust, Salford Royal Hospitals Foundation Trust, Heart of England NHS Foundation Trust, The London Clinic, Department of Diabetes and Endocrinology, Leicester Royal Infirmary, Leicester, LE1 5WW, UK

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Phillip Yeoh University Hospitals of Leicester NHS Trust, Great Ormond Street Hospital for Children NHS Trust, Central Manchester University Hospitals NHS Foundation Trust, NHS Grampian, Portsmouth Hospitals NHS Trust, Salford Royal Hospitals Foundation Trust, Heart of England NHS Foundation Trust, The London Clinic, Department of Diabetes and Endocrinology, Leicester Royal Infirmary, Leicester, LE1 5WW, UK

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This competency framework was developed by a working group of endocrine specialist nurses with the support of the Society for Endocrinology to enhance the clinical care that adults with an endocrine disorder receive. Nurses should be able to demonstrate that they are functioning at an optimal level in order for patients to receive appropriate care. By formulating a competency framework from which an adult endocrine nurse specialist can work, it is envisaged that their development as professional practitioners can be enhanced. This is the second edition of the Competency Framework for Adult Endocrine Nursing. It introduces four new competencies on benign adrenal tumours, hypo- and hyperparathyroidism, osteoporosis and polycystic ovary syndrome. The authors and the Society for Endocrinology welcome constructive feedback on the document, both nationally and internationally, in anticipation that further developments and ideas can be incorporated into future versions.

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Anna Gorbacheva Endocrinology Research Center, Moscow, Russian Federation

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Anna Eremkina Endocrinology Research Center, Moscow, Russian Federation

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Daria Goliusova Endocrinology Research Center, Moscow, Russian Federation

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Julia Krupinova Endocrinology Research Center, Moscow, Russian Federation

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Natalia Mokrysheva Endocrinology Research Center, Moscow, Russian Federation

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Multiple endocrine neoplasia type 1 (MEN1) is the most common cause of hereditary primary hyperparathyroidism (PHPT). Bone disorders are considered one of the key symptoms in PHPT present with the significant reduction in bone mineral density and low-energy fractures. Previously, these bone disorders were believed to be caused solely by the increase in the level of parathyroid hormone and its subsequent effect on bone resorption. The current paradigm, however, states that the mutations in the menin gene, which cause the development of MEN1, can also affect the metabolism of the cells of the osteoid lineage. This review analyzes both the proven and the potential intracellular mechanisms through which menin can affect bone metabolism.

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Rong Xu Center for Endocrine Metabolism and Immune Diseases, Lu He Hospital, Capital Medical University, Beijing, China
Beijing Key Laboratory of Diabetes Research and Care, Beijing, China

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Difei Lian Center for Endocrine Metabolism and Immune Diseases, Lu He Hospital, Capital Medical University, Beijing, China
Beijing Key Laboratory of Diabetes Research and Care, Beijing, China

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Yan Xie Center for Endocrine Metabolism and Immune Diseases, Lu He Hospital, Capital Medical University, Beijing, China
Beijing Key Laboratory of Diabetes Research and Care, Beijing, China

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Lin Mu Center for Endocrine Metabolism and Immune Diseases, Lu He Hospital, Capital Medical University, Beijing, China
Beijing Key Laboratory of Diabetes Research and Care, Beijing, China

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Yali Wu Center for Endocrine Metabolism and Immune Diseases, Lu He Hospital, Capital Medical University, Beijing, China
Beijing Key Laboratory of Diabetes Research and Care, Beijing, China

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Zhilei Chen Center for Endocrine Metabolism and Immune Diseases, Lu He Hospital, Capital Medical University, Beijing, China
Beijing Key Laboratory of Diabetes Research and Care, Beijing, China

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Baoyu Zhang Center for Endocrine Metabolism and Immune Diseases, Lu He Hospital, Capital Medical University, Beijing, China
Beijing Key Laboratory of Diabetes Research and Care, Beijing, China

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Osteoporosis (OP) is a systemic bone disease in which bone density and quality decrease and bone fragility increases due to a variety of causes, making it prone to fractures. The development of OP is closely related to oxidative stress. Uric acid (UA) is the end product of purine metabolism in the human body. Extracellular UA has antioxidant properties and is thought to have a protective effect on bone metabolism. However, the process of UA degradation can lead to intracellular oxidative stress, which together with UA-induced inflammatory factors, leads to increased bone destruction. In addition, UA can inhibit vitamin D production, resulting in secondary hyperparathyroidism and further exacerbating UA-associated bone loss. This review summarizes the relationship between serum UA levels and bone mineral density, bone turnover markers, and so on, in the hope of providing new insights into the pathogenesis and treatment of OP.

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Raja Padidela Royal Manchester Children’s Hospital and Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK

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Moira S Cheung Evelina London Children’s Hospital, London, UK

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Vrinda Saraff Birmingham Women’s and Children’s Hospital, Birmingham, UK

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Poonam Dharmaraj Alder Hey Children’s NHS Foundation Trust, Liverpool, UK

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X-linked hypophosphataemia (XLH) is caused by a pathogenic variant in the PHEX gene, which leads to elevated circulating FGF23. High FGF23 causes hypophosphataemia, reduced active vitamin D concentration and clinically manifests as rickets in children and osteomalacia in children and adults. Conventional therapy for XLH includes oral phosphate and active vitamin D analogues but does not specifically treat the underlying pathophysiology of elevated FGF23-induced hypophosphataemia. In addition, adherence to conventional therapy is limited by frequent daily dosing and side effects such as gastrointestinal symptoms, secondary hyperparathyroidism and nephrocalcinosis. Burosumab, a recombinant human IgG1 MAB that binds to and inhibits the activity of FGF23, is administered subcutaneously every 2 weeks. In clinical trials (phase 2 and 3) burosumab was shown to improve phosphate homeostasis that consequently resolves the skeletal/non-skeletal manifestations of XLH. Burosumab was licensed in Europe (February 2018) with the National Institute for Health and Care Excellence, UK approving use within its marketing authorisation in October 2018. In this publication, the British Paediatric and Adolescent Bone Group (BPABG) reviewed current evidence and provide expert recommendations for care pathway and management of XLH with burosumab.

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Marcela Moraes Mendes Department of Nutrition, Faculty of Health Sciences, University of Brasília, Distrito Federal, Brazil
Department of Nutrition, Institute of Life Sciences, Federal University of Juiz de Fora, Governador Valadares, Minas Gerais, Brazil
Department of Nutrition, Faculty of Health and Medical Sciences, University of Surrey, University of Surrey, Guildford, UK

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Patricia Borges Botelho Department of Nutrition, Faculty of Health Sciences, University of Brasília, Distrito Federal, Brazil

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Helena Ribeiro Department of Environmental Health, Faculty of Public Health, University of São Paulo, São Paulo, Brazil

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Vitamin D enhances calcium absorption and bone mineralisation, promotes maintenance of muscle function, and is crucial for musculoskeletal health. Low vitamin D status triggers secondary hyperparathyroidism, increases bone loss, and leads to muscle weakness. The primary physiologic function of vitamin D and its metabolites is maintaining calcium homeostasis for metabolic functioning, signal transduction, and neuromuscular activity. A considerable amount of human evidence supports the well-recognised contribution of adequate serum 25-hydroxyvitamin D concentrations for bone homeostasis maintenance and prevention and treatment strategies for osteoporosis when combined with adequate calcium intake. This paper aimed to review the literature published, mainly in the last 20 years, on the effect of vitamin D and its supplementation for musculoskeletal health in order to identify the aspects that remain unclear or controversial and therefore require further investigation and debate. There is a clear need for consistent data to establish realistic and meaningful recommendations of vitamin D status that consider different population groups and locations. Moreover, there is still a lack of consensus on thresholds for vitamin D deficiency and optimal status as well as toxicity, optimal intake of vitamin D, vitamin D supplement alone as a strategy to prevent fractures and falls, recommended sun exposure at different latitudes and for different skin pigmentations, and the extra skeletal effects of vitamin D.

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Cristina Lamas Department of Endocrinology and Nutrition, Complejo Hospitalario Universitario de Albacete, Albacete, Spain

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Elena Navarro Department of Endocrinology and Nutrition, Hospital Universitario Virgen del Rocío, Sevilla, Spain

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Anna Casterás Department of Endocrinology and Nutrition, Hospital Vall d’Hebron, Barcelona, Spain

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Paloma Portillo Department of Endocrinology and Nutrition, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain

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Victoria Alcázar Department of Endocrinology and Nutrition, Hospital Universitario Severo Ochoa, Leganés, Spain

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María Calatayud Department of Endocrinology and Nutrition, Hospital Univeristario Doce de Octubre, Madrid, Spain

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Cristina Álvarez-Escolá Department of Endocrinology and Nutrition, Hospital Universitario La Paz, Madrid, Spain

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Julia Sastre Department of Endocrinology and Nutrition, Complejo Hospitalario de Toledo, Hospital Virgen de la Salud, Toledo, Spain

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Evangelina Boix Department of Endocrinology and Nutrition, Hospital General Universitario de Elche, Elche, Spain

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Lluis Forga Department of Endocrinology and Nutrition, Complejo Hospitalario de Navarra, Hospital de Navarra, Pamplona, Spain

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Almudena Vicente Department of Endocrinology and Nutrition, Complejo Hospitalario de Toledo, Hospital Virgen de la Salud, Toledo, Spain

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Josep Oriola Biochemistry and Molecular Genetics Department, Hospital Clínic i Universitari de Barcelona, Barcelona, Spain

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Jordi Mesa Department of Endocrinology and Nutrition, Hospital Vall d’Hebron, Barcelona, Spain

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Nuria Valdés Department of Endocrinology and Nutrition, Hospital Universitario Central de Asturias, Oviedo, Spain

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Primary hyperparathyroidism is the most frequent manifestation of multiple endocrine neoplasia type 1 (MEN1) syndrome. Bone and renal complications are common. Surgery is the treatment of choice, but the best timing for surgery is controversial and predictors of persistence and recurrence are not well known. Our study describes the clinical characteristics and the surgical outcomes, after surgery and in the long term, of the patients with MEN1 and primary hyperparathyroidism included in the Spanish Registry of Multiple Endocrine Neoplasia, Pheochromocytomas and Paragangliomas (REGMEN). Eighty-nine patients (49 men and 40 women, 34.2 ± 13 years old) were included. Sixty-four out of the 89 underwent surgery: a total parathyroidectomy was done in 13 patients, a subtotal parathyroidectomy in 34 and a less than subtotal parathyroidectomy in 15. Remission rates were higher after a total or a subtotal parathyroidectomy than after a less than subtotal (3/4 and 20/22 vs 7/12, P < 0.05), without significant differences in permanent hypoparathyroidism (1/5, 9/23 and 0/11, N.S.). After a median follow-up of 111 months, 20 of the 41 operated patients with long-term follow-up had persistent or recurrent hyperparathyroidism. We did not find differences in disease-free survival rates between different techniques, patients with or without permanent hypoparathyroidism and patients with different mutated exons, but a second surgery was more frequent after a less than subtotal parathyroidectomy.

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Budoor Alemadi Endocrinology Department, Dubai Hospital, Dubai Health, Dubai, UAE

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Fauzia Rashid Endocrinology Department, Dubai Hospital, Dubai Health, Dubai, UAE

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Ali Alzahrani King Faisal Specialist Hospital & Research Centre, Department of Medicine, Riyadh, Saudi Arabia

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Primary hyperparathyroidism has emerged as a prevalent endocrine disorder in clinical settings, necessitating in most cases, surgical intervention for the removal of the diseased gland. This condition is characterised by overactivity of the parathyroid glands, resulting in excessive parathyroid hormone production and subsequent disturbances in calcium homeostasis. The primary mode of management is surgical treatment, relying on the accurate localisation of the pathological parathyroid gland. Precise identification is paramount to ensuring that the surgical intervention effectively targets and removes the diseased gland, alleviating the hyperfunctioning state. However, localising the gland becomes challenging, as discrepancies between the clinical manifestation of active parathyroid and radiological identification are common. Based on our current knowledge, to date, no comprehensive review has been conducted that considers all factors collectively. This comprehensive review delves into the factors contributing to false-negative 99mTc-Sestamibi scans. Our research involved an exhaustive search in the PubMed database for hyperparathyroidism, with the identified literature meticulously filtered and reviewed by the authors. The results highlighted various factors, including multiple parathyroid diseases, nodular goitre, mild disease, or the presence of an ectopic gland that causes discordance. Hence, a thorough consideration of these factors is crucial during the diagnostic workup of hyperparathyroidism. Employing intraoperative PTH assays can significantly contribute to a successful cure of the disease, thereby providing a more comprehensive approach to managing this prevalent endocrine disorder.

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Marlena Mueller Division of Endocrinology, Diabetes, and Metabolism, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland
Division of General and Emergency Medicine, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland

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Fahim Ebrahimi Division of Endocrinology, Diabetes, and Metabolism, University Hospital Basel, Basel, Switzerland
University Center for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital, Basel, Switzerland

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Emanuel Christ Division of Endocrinology, Diabetes, and Metabolism, University Hospital Basel, Basel, Switzerland

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Christian Andreas Nebiker Department of Surgery, Kantonsspital Aarau AG, Aarau, Switzerland

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Philipp Schuetz Division of Endocrinology, Diabetes, and Metabolism, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland
Division of General and Emergency Medicine, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland
Faculty of Medicine, University Hospital Basel, Basel, Switzerland

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Beat Mueller Division of Endocrinology, Diabetes, and Metabolism, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland
Division of General and Emergency Medicine, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland
Faculty of Medicine, University Hospital Basel, Basel, Switzerland

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Alexander Kutz Division of Endocrinology, Diabetes, and Metabolism, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland
Division of General and Emergency Medicine, University Department of Medicine, Kantonsspital Aarau AG, Aarau, Switzerland

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Background

Primary hyperparathyroidism is a prevalent endocrinopathy for which surgery is the only curative option. Parathyroidectomy is primarily recommended in younger and symptomatic patients, while there are still concerns regarding surgical complications in older patients. We therefore assessed the association of age with surgical outcomes in patients undergoing parathyroidectomy in a large population in Switzerland.

Methods

Population-based cohort study of adult patients with primary hyperparathyroidism undergoing parathyroidectomy in Switzerland between 2012 and 2018. The cohort was divided into four age groups (<50 years, 50–64 years, 65–74 years, ≥75 years). The primary outcome was a composite of in-hospital postoperative complications. Secondary outcomes were intensive care unit (ICU) admission, unplanned 30-day-readmission, and prolonged length of hospital stay.

Results

We studied 2642 patients with a median (IQR) age of 62 (53–71) years. Overall, 111 patients had complications including surgical re-intervention, hypocalcemia, and vocal cord paresis. As compared to <50 year-old patients, older patients had no increased risk for in-hospital complications after surgery (50–64 years: odds ratio (OR): 0.51 (95% CI, 0.28 to 0.92); 65–74 years: OR: 0.72 (95% CI, 0.39 to 1.33); ≥75 years: OR: 1.03 (95% CI, 0.54 to 1.95), respectively. There was also no association of age and rates of ICU-admission and unplanned 30-day-readmission, but oldest patients had longer hospital stays (OR: 2.38 (95% CI, 1.57 to 3.60)).

Conclusion

≥50 year-old patients undergoing parathyroidectomy had comparable risk of in-hospital complications as compared with younger ones. These data support parathyroidectomy in even older patients with primary hyperparathyroidism as performed in clinical routine.

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Heng Yeh Department of Emergency Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
College of Medicine, Chang Gung University, Taoyuan, Taiwan

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Hsuan Yeh College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Chun-Cheng Chiang College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Ju-Ching Yen College of Medicine, China Medical University, Taichung, Taiwan

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I-Kuan Wang College of Medicine, China Medical University, Taichung, Taiwan
Department of Nephrology, China Medical University Hospital, Taichung, Taiwan

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Shou-Hsuan Liu College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Cheng-Chia Lee College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Cheng-Hao Weng College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Wen-Hung Huang College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Ching-Wei Hsu College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Tzung-Hai Yen College of Medicine, Chang Gung University, Taoyuan, Taiwan
Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan

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Secondary hyperparathyroidism (SHPT) is a common complication of end-stage kidney disease (ESKD). Hungry bone syndrome (HBS) occurs frequently in patients on maintenance dialysis receiving parathyroidectomy for refractory SHPT. However, there is scanty study investigating the clinical risk factors that predict postoperative HBS, and its outcome in peritoneal dialysis (PD) patients. We conducted a single-center retrospective study to analyze 66 PD patients who had undergone parathyroidectomy for secondary hyperparathyroidism at Chang Gung Memorial Hospital between 2009 and 2019. The patients were stratified into two groups based on the presence (n=47) or absence (n=19) of HBS after parathyroidectomy. Subtotal parathyroidectomy was the most common surgery performed (74.2%), followed by total parathyroidectomy with autoimplantation (25.8%). Pathological examination of all surgical specimens revealed parathyroid hyperplasia (100%). Patients with HBS had lower levels of postoperative nadir corrected calcium, higher alkaline phosphate (ALP), and higher potassium levels compared with patients without HBS (all P<0.05). A multivariate logistic regression model confirmed that lower preoperative serum calcium level (OR 0.354, 95% CI 0.133–0.940, P=0.037), higher ALP (OR 1.026, 95% CI 1.008–1.044, P=0.004), and higher potassium level (OR 6.894, 95% CI 1.806–26.317, P=0.005) were associated with HBS after parathyroidectomy. Patients were followed for 58.2±30.8 months after the surgery. There was no significant difference between HBS and non-HBS groups in persistence (P=0.496) or recurrence (P=1.000) of hyperparathyroidism. The overall mortality rate was 10.6% with no significant difference found between both groups (P=0.099). We concluded that HBS is a common complication (71.2%) of parathyroidectomy for SHPT and should be managed appropriately.

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Cheng Han Ng Yong Loo Lin School of Medicine, National University of Singapore, Singapore

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Yip Han Chin Yong Loo Lin School of Medicine, National University of Singapore, Singapore

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Marcus Hon Qin Tan Yong Loo Lin School of Medicine, National University of Singapore, Singapore

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Jun Xuan Ng Yong Loo Lin School of Medicine, National University of Singapore, Singapore

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Samantha Peiling Yang Yong Loo Lin School of Medicine, National University of Singapore, Singapore
Department of Medicine, National University Hospital, Singapore

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Jolene Jiayu Kiew Department of Medicine, National University Hospital, Singapore

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Chin Meng Khoo Yong Loo Lin School of Medicine, National University of Singapore, Singapore
Department of Medicine, National University Hospital, Singapore

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Purpose:

Primary hyperparathyroidism (PHPT) is a common condition affecting people of all ages and is mainly treated with parathyroidectomy. Cinacalcet has been widely used in secondary or tertiary hyperparathyroidism, but the use of cinacalcet in PHPT is less clear.

Methods:

Searches were conducted in Medline and Embase for cinacalcet use in PHPT from induction to 10 April 2020. Articles and conferences abstracts describing the use of cinacalcet for PHPT in prospective or retrospective cohorts and randomized controlled trials restricted to English language only. We initially identified 1301 abstracts. Each article went extraction by two blinded authors on a structured proforma. Continuous outcomes were pooled with weight mean difference (WMD). Quality of included articles was assessed with Newcastle Ottwa Scale and Cochrane Risk of Bias 2.0.

Results:

Twenty-eight articles were included. Normalization rate of serum Ca levels was reported at 90% (CI: 0.82 to 0.96). Serum levels of Ca and PTH levels were significantly reduced (Ca, WMD: 1.647, CI: −1.922 to −1.371; PTH, WMD: −31.218, CI: −41.671 to −20.765) and phosphate levels significantly increased (WMD: 0.498, CI: 0.400 to 0.596) after cinacalcet therapy. The higher the baseline Ca levels, the greater Ca reduction with cinacalcet treatment. Age and gender did not modify the effect of cinacalcet on serum Ca levels.

Conclusion:

The results from the meta-analysis support the use of cinacalcet as an alternative or bridging therapy to treat hypercalcemia in people with PHPT.

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