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Maria Angela De Stefano Department of Public Health, University of Naples “Federico II”, Naples, Italy

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Tommaso Porcelli Department of Public Health, University of Naples “Federico II”, Naples, Italy

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Martin Schlumberger Department of Endocrine Oncology, Gustave Roussy and University Paris-Saclay, Villejuif, France

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Domenico Salvatore Department of Public Health, University of Naples “Federico II”, Naples, Italy
CEINGE Biotecnologie Avanzate Scarl, Naples, Italy

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The three deiodinase selenoenzymes are key regulators of intracellular thyroid hormone (TH) levels. The two TH-activating deiodinases (type 1 deiodinase and type 2 deiodinase (D2)) are normally expressed in follicular thyroid cells and contribute to overall TH production. During thyroid tumorigenesis, the deiodinase expression profile changes to customize intracellular TH levels to different requirements of cancer cells. Differentiated thyroid cancers overexpress the TH-inactivating type 3 deiodinase (D3), likely to reduce the TH signaling within the tumor. Strikingly, recent evidence suggests that during the late stage of thyroid tumorigenesis, D2 expression raises and this, together with a reduction in D3 expression levels, increases TH intracellular signaling in dedifferentiated thyroid cancers. These findings call into question the different functions of TH in the various stages of thyroid cancers.

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Dahlia F Davidoff Cancer Genetics, Kolling Institute, Royal North Shore Hospital, St Leonards, New South Wales, Australia
University of Sydney, Camperdown, New South Wales, Australia
Department of Endocrinology, Royal North Shore Hospital, St Leonards, New South Wales, Australia

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Eugénie S Lim Department of Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK
Department of Endocrinology, St. Bartholomew’s Hospital, Barts Health NHS Trust, London, UK

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Diana E Benn Cancer Genetics, Kolling Institute, Royal North Shore Hospital, St Leonards, New South Wales, Australia
University of Sydney, Camperdown, New South Wales, Australia

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Yuvanaa Subramaniam Department of Endocrinology, St. Bartholomew’s Hospital, Barts Health NHS Trust, London, UK

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Eleanor Dorman Department of Endocrinology, St. Bartholomew’s Hospital, Barts Health NHS Trust, London, UK

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John R Burgess Department of Diabetes and Endocrinology, Royal Hobart Hospital, Hobart, Tasmania, Australia
School of Medicine, University of Tasmania, Hobart, Tasmania, Australia

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Scott A Akker Department of Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK
Department of Endocrinology, St. Bartholomew’s Hospital, Barts Health NHS Trust, London, UK

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Roderick J Clifton-Bligh Cancer Genetics, Kolling Institute, Royal North Shore Hospital, St Leonards, New South Wales, Australia
University of Sydney, Camperdown, New South Wales, Australia
Department of Endocrinology, Royal North Shore Hospital, St Leonards, New South Wales, Australia

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Phaeochromocytoma and paraganglioma are highly heritable tumours; half of those associated with a germline mutation are caused by mutations in genes for Krebs’s cycle enzymes, including succinate dehydrogenase (SDH). Inheritance of SDH alleles is assumed to be Mendelian (probability of 50% from each parent). The departure from transmission of parental alleles in a ratio of 1:1 is termed transmission ratio distortion (TRD). We sought to assess whether TRD occurs in the transmission of SDHB pathogenic variants (PVs). This study was conducted with 41 families of a discovery cohort from Royal North Shore Hospital, Australia, and 41 families from a validation cohort from St. Bartholomew’s Hospital, United Kingdom (UK). Inclusion criteria were a clinically diagnosed SDHB PV and a pedigree available for at least two generations. TRD was assessed in 575 participants with the exact binomial test. The transmission ratio for SDHB PV was 0.59 (P = 0.005) in the discovery cohort, 0.67 (P < 0.001) in the validation cohort, and 0.63 (P < 0.001) in the combined cohort. No parent-of-origin effect was observed. TRD remained significant after adjusting for potential confounders: 0.67 (P < 0.001) excluding families with incomplete family size data; 0.58 (P < 0.001) when probands were excluded. TRD was also evident for SDHD PVs in a cohort of 81 patients from 13 families from the UK. The reason for TRD of SDHB and SDHD PVs is unknown, but we hypothesize a survival advantage selected during early embryogenesis. The existence of TRD for SDHB and SDHD has implications for reproductive counselling, and further research into the heterozygote state.

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Paul C Marker School of Pharmacy, Pharmaceutical Sciences Division, University of Wisconsin-Madison, Madison, Wisconsin, USA

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Christopher J Unterberger School of Pharmacy, Pharmaceutical Sciences Division, University of Wisconsin-Madison, Madison, Wisconsin, USA

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Steven M Swanson School of Pharmacy, Pharmaceutical Sciences Division, University of Wisconsin-Madison, Madison, Wisconsin, USA

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Interest in investigating the role of the growth hormone (GH)/insulin-like growth factor 1 (IGF-1) axis in the initiation and progression of experimentally induced carcinomas has arisen due to several observations in the human population. First, subjects with Laron syndrome who lack GH signaling have significantly lower rates of cancer than people who have normal GH signaling. Second, epidemiologic studies have found strong associations between elevated circulating IGF-1 and the incidence of several common cancers. Third, women who bear children early in life have a dramatically reduced risk of developing breast cancer, which may be due to differences in hormone levels including GH. These observations have motivated multiple studies that have experimentally altered activity of the GH/IGF-1 axis in the context of experimental carcinoma models in mice and rats. Most of these studies have utilized carcinoma models for four organ systems that are also frequent sites of carcinomas in humans: the mammary gland, prostate gland, liver, and colon. This review focuses on these studies and describes some of the most common genetic models used to alter the activity of the GH/IGF-1 axis in experimentally induced carcinomas. A recurring theme that emerges from these studies is that manipulations that reduce the activity of GH or mediators of GH action also inhibit carcinogenesis in multiple model systems.

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Karel Pacak Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA

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Roderick Clifton-Bligh Department of Endocrinology Royal North Shore Hospital, University of Sydney, Australia

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Pheochromocytomas and paragangliomas (PPGLs) are defined as neuroendocrine tumors that produce catecholamines. Many recent advances in their management, localization, treatment, as well as surveillance have significantly improved outcomes for patients with PPGLs or carriers of pathogenic genetic variants linked to the development of these tumors. At present, those advances mainly include the molecular stratification of PPGLs into seven clusters, the 2017 WHO revised definition of these tumors, the presence of specific clinical features pointing toward PPGL, the use of plasma metanephrines and 3-methoxytyramine with specific reference limits to assess the likelihood of having a PPGL (e.g. patients at high and low risk) including age-specific reference limits, nuclear medicine guidelines outlining cluster- and metastatic disease-specific functional (here mainly positron emission tomography and metaiodobenzylguanidine scintigraphy) imaging in the precise diagnostic localization of PPGLs, the guidelines for using radio- vs chemotherapy for patients with metastatic disease, and the international consensus on initial screening and follow-up of asymptomatic germline SDHx pathogenic variant carriers. Furthermore, new collaborative efforts particularly based on multi-institutional and worldwide initiatives are now considered key forces in improving our understanding and knowledge about these tumors and future successful treatments or even preventative interventions.

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Arthur S Tischler Department of Pathology and Laboratory Medicine, Tufts Medical Center and Tufts University School of Medicine, Boston, Massachusetts, USA

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Judith Favier Université Paris cité, Inserm UMR970 PARCC, Equipe Labellisée par la Ligue contre le cancer, Paris, France

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Experimental models for pheochromocytoma and paraganglioma are needed for basic pathobiology research and for preclinical testing of drugs to improve treatment of patients with these tumors, especially patients with metastatic disease. The paucity of models reflects the rarity of the tumors, their slow growth, and their genetic complexity. While there are no human cell line or xenograft models that faithfully recapitulate the genotype or phenotype of these tumors, the past decade has shown progress in development and utilization of animal models, including a mouse and a rat model for SDH-deficient pheochromocytoma associated with germline Sdhb mutations. There are also innovative approaches to preclinical testing of potential treatments in primary cultures of human tumors. Challenges with these primary cultures include how to account for heterogeneous cell populations that will vary depending on the initial tumor dissociation and how to distinguish drug effects on neoplastic vs normal cells. The feasible duration for maintaining cultures must also be balanced against time required to reliably assess drug efficacy. Considerations potentially important for all in vitro studies include species differences, phenotype drift, changes that occur in the transition from tissue to cell culture, and the O2 concentration in which cultures are maintained.

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Maria Angela De Stefano Department of Public Health, University of Naples ’Federico II’, Naples, Italy

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Tommaso Porcelli Department of Public Health, University of Naples ’Federico II’, Naples, Italy

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Raffaele Ambrosio IRCCS SDN, Naples, Italy

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Cristina Luongo Department of Clinical Medicine and Surgery, University of Naples ’Federico II’, Naples, Italy

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Maddalena Raia CEINGE Biotecnologie Avanzate Scarl, Naples, Italy

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Martin Schlumberger Department of Endocrine Oncology, Gustave Roussy and University Paris-Saclay, Villejuif, France

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Domenico Salvatore Department of Public Health, University of Naples ’Federico II’, Naples, Italy
CEINGE Biotecnologie Avanzate Scarl, Naples, Italy

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Anaplastic thyroid cancer (ATC) is a rare thyroid tumor that frequently originates from the dedifferentiation of a well-differentiated papillary or follicular thyroid cancer. Type 2 deiodinase (D2), responsible for the activation of the thyroid hormone thyroxine into tri-iodothyronine (T3), is expressed in normal thyroid cells and its expression is strongly downregulated in papillary thyroid cancer. In skin cancer, D2 has been associated with cancer progression, dedifferentiation, and epithelial–mesenchymal transition. Here, we show that D2 is highly expressed in anaplastic compared to papillary thyroid cancer cell lines and that D2-derived T3 is required for ATC cell proliferation. D2 inhibition is associated with G1 growth arrest and induction of cell senescence, together with reduced cell migration and invasive potential. Finally, we found that mutated p5372R(R248W), frequently found in ATC, is able to induce D2 expression in transfected papillary thyroid cancer cells. Our results show that the action of D2 is crucial for ATC proliferation and invasiveness, providing a potential new therapeutic target for the treatment of ATC.

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Pia Roser Department of Endocrinology ASO/EASO COM, King′s College Hospital NHS Foundation Trust, London, UK
Department of Endocrinology and Diabetes, University Medical Center Hamburg-Eppendorf, Hamburg, Germany

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Bianca M Leca University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK

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Claudia Coelho Department of Diabetes and Endocrinology, Guy's and St Thomas' NHS Foundation Trust, London, UK

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Klaus-Martin Schulte Department of Endocrine Surgery, King's College Hospital NHS Foundation Trust, London, UK
Academic Department of Surgery, Australian National University, Canberra, Australia

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Jackie Gilbert Department of Endocrinology ASO/EASO COM, King′s College Hospital NHS Foundation Trust, London, UK

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Eftychia E Drakou Department of Clinical Oncology, Guy's Cancer Centre - Guy's and St Thomas' NHS Foundation Trust, London, UK

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Christos Kosmas Department of Medicine, Division of Medical Oncology-Hematopoietic Cell Transplant Unit, Metaxa Memorial Cancer Hospital, Piraeus, Greece

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Ling Ling Chuah Department of Endocrinology ASO/EASO COM, King′s College Hospital NHS Foundation Trust, London, UK

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Husam Wassati Department of Radiology, King’s College Hospital NHS Foundation Trust, Princess Royal University Hospital, London, UK

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Alexander D Miras Section of Investigative Medicine, Division of Diabetes, Endocrinology & Metabolism, Imperial College London, London, UK

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James Crane Department of Endocrinology ASO/EASO COM, King′s College Hospital NHS Foundation Trust, London, UK

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Simon J B Aylwin Department of Endocrinology ASO/EASO COM, King′s College Hospital NHS Foundation Trust, London, UK

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Ashley B Grossman Green Templeton College, University of Oxford, Oxford, UK
Centre for Endocrinology, William Harvey Institute, Barts and the London School of Medicine, London, UK
Neuroendocrine Tumour Unit, Royal Free Hospital, London, UK

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Georgios K Dimitriadis Department of Endocrinology ASO/EASO COM, King′s College Hospital NHS Foundation Trust, London, UK
Obesity T2D and Immunometabolism Research Group, Faculty of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK
Division of Biomedical Sciences - Reproductive Health, Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, Coventry, UK

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Parathyroid carcinoma is one of the least common endocrine malignancies and accounts for approximately 1% of all patients with primary hyperparathyroidism. A systematic review of peer-reviewed literature published between January 2000 and March 2022 via Medline, Embase, Cochrane Central Register of Controlled Trials, EudraCT, ClinicalTrials.gov, CINAHL and SCOPUS was conducted. Manuscripts were eligible if they included data on adult non-pregnant populations with parathyroid carcinoma. No restrictions regarding interventions, comparators or duration of follow-up were imposed. Single case reports, reviews or meta-analyses were excluded. Outcomes of interest were molecular pathogenesis, clinical presentation, differential diagnosis, treatment, follow-up and overall survival. Study quality was evaluated using the Newcastle–Ottawa Scale for observational studies.

This review included 75 studies from 17 countries, reporting on more than 3000 patients with parathyroid carcinoma. CDC73 mutation has been recognised as playing a pivotal role in molecular pathogenesis. Parathyroid carcinoma typically presents with markedly increased calcium and parathyroid hormone levels. The most frequently described symptoms were bone and muscle pain or weakness. En bloc resection remains the gold standard for the surgical approach. The 5-year overall survival ranged from 60 to 93%, with resistant hypercalcaemia a significant cause of mortality. Emerging evidence indicating that targeted therapy, based on molecular biomarkers, presents a novel treatment option. The rarity of PC and need for personalised treatment warrant multidisciplinary management in a ‘centre of excellence’ with a track record in PC management.

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Alessandra Mangone Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK

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Barbara Altieri Division of Endocrinology and Diabetes, Department of Internal Medicine I, University Hospital, University of Würzburg, Würzburg, Germany

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Mario Detomas Division of Endocrinology and Diabetes, Department of Internal Medicine I, University Hospital, University of Würzburg, Würzburg, Germany

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Alessandro Prete Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK
Department of Endocrinology, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

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Haider Abbas Oncology Department, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

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Miriam Asia Department of Endocrinology, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

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Yasir S Elhassan Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK
Department of Endocrinology, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

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Giovanna Mantovani Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy

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Cristina L Ronchi Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
Division of Endocrinology and Diabetes, Department of Internal Medicine I, University Hospital, University of Würzburg, Würzburg, Germany
Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK
Department of Endocrinology, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

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Treatment for advanced adrenocortical carcinoma (ACC) consists of mitotane alone or combined with etoposide, doxorubicin, and cisplatin (EDP). Although both therapies are widely used, markers of response are still lacking. Since inflammation-based scores have been proposed as prognostic factors in ACC, we aimed to investigate their role in predicting the response to first-line chemotherapy.

We performed a retrospective analysis of patients with advanced ACC treated with mitotane monotherapy or EDP ± mitotane. Clinical parameters (tumour stage at diagnosis, resection status, Ki67, time from diagnosis to treatment start, performance status, plasma mitotane levels, time in mitotane target ≥ 80%, clinically overt cortisol hypersecretion), and pretreatment inflammation-based scores (neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), monocyte-to-lymphocyte ratio, derived neutrophil-to-lymphocyte ratio) were investigated. The primary endpoints were overall survival (OS) and time-to-progression (TTP) from treatment initiation, the secondary endpoint was the best objective response to treatment.

We included 90 patients (59% = women, median age = 51 years) treated with mitotane monotherapy (n = 40) or EDP ± mitotane (n = 50). In the mitotane monotherapy cohort, NLR ≥ 5 and PLR ≥ 190 predicted shorter OS (hazard ratio (HR): 145.83, 95% CI: 1.87–11,323.83; HR: 165.50, 95% CI: 1.76–15,538.04, respectively), remaining significant at multivariable analysis including clinical variables. NLR was also associated with shorter TTP (HR: 2.58, 95% CI: 1.28–5.20), but only at univariable analysis. Patients with NLR ≥ 5 showed a worse treatment response than those with NLR < 5 (P = 0.040). In the EDP ± mitotane cohort, NLR ≥ 5 predicted shorter OS (HR: 2.52, 95% CI: 1.30–4.88) and TTP (HR: 1.95, 95% CI: 1.04–3.66) at univariable analysis.

In conclusion, inflammation-based scores, calculated from routinely measured parameters, may help predict response to chemotherapy in advanced ACC.

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David Taïeb Department of Nuclear Medicine, La Timone University Hospital, CERIMED, Aix-Marseille University, Marseille, France

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Christelle Fargette Department of Nuclear Medicine, La Timone University Hospital, CERIMED, Aix-Marseille University, Marseille, France

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Abhishek Jha Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA

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Karel Pacak Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA

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Precision medicine (PM) aims to maximize the risk–benefit balance of medical decisions by integrating individual patient and disease characteristics. This approach is gaining increasing recognition from clinicians, healthcare systems, pharmaceutical companies, patients, and governments. Nuclear medicine plays a critical role in PM by its virtue of providing critical information at every step of disease management, digital markers, and companion diagnostics/therapeutics. It is anticipated that technological breakthroughs and new tracers will continue to position nuclear medicine among the significant players in PM.

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Maria Riedmeier University Children’s Hospital, Department of Pediatric Hematology, Oncology and Stem cell transplantation, University of Wuerzburg, Wuerzburg, Germany.

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Lester D R Thompson Head and Neck Pathology Consultations, Los Angeles, California, USA

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Carlos Augusto Fernandes Molina Department of Surgery and Anatomy, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil

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Boris Decarolis Department of Pediatric Oncology and Hematology, University Children’s Hospital of Cologne, Medical Faculty, Cologne, Germany

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Christoph Härtel University Children’s Hospital, Department of Pediatric Hematology, Oncology and Stem cell transplantation, University of Wuerzburg, Wuerzburg, Germany.

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Paul-G Schlegel University Children’s Hospital, Department of Pediatric Hematology, Oncology and Stem cell transplantation, University of Wuerzburg, Wuerzburg, Germany.
Comprehensive Cancer Centre Mainfranken, University of Wuerzburg Medical Centre, Wuerzburg, Germany

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Martin Fassnacht Comprehensive Cancer Centre Mainfranken, University of Wuerzburg Medical Centre, Wuerzburg, Germany
Department of Medicine, Division of Endocrinology and Diabetes, University Hospital, University of Wuerzburg, Wuerzburg, Germany

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Verena Wiegering University Children’s Hospital, Department of Pediatric Hematology, Oncology and Stem cell transplantation, University of Wuerzburg, Wuerzburg, Germany.
Comprehensive Cancer Centre Mainfranken, University of Wuerzburg Medical Centre, Wuerzburg, Germany

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Histopathological differentiation in pediatric adrenocortical carcinoma (pACC) is difficult and clinical prediction and stratification scores are not evaluated yet. Therefore, this review aims to summarize current evidence on the value and accuracy of the two commonly used scoring systems (Weiss/Armed Forces Institute of Pathology (AFIP)) pACC. On this base, one might be able to evaluate if patients may benefit from a unique scoring system. For this, we performed a systematic review of the published literature and included 128 patients in our analysis. The majority (72%) of the pACCs had a good clinical course. The follow-up time ranged from 0 to 420 months with a mean age of 5.6 years at diagnosis. Patients with a good clinical course were younger (mean 4.8 years) than patients with a poor outcome (mean 7.6 years). Comparing the two scoring systems, the specificity of the Weiss score was very low (25%), whereas the sensitivity was 100%. According to the AFIP score, specificity (77%) was higher than the Weiss score, whereas the sensitivity of the AFIP score was minimal lower with 92%. Age differences were recognizable as the specificity was lower in infants <4 years (20%) than in older children (32%). In contrast, the specificity of the AFIP score was higher in infants <4 years (82%) than in older age groups (76%). Summarizing our results, we could show that the Weiss score is not a suitable tool for the prediction of malignancy in pACC in comparison with the AFIP score, but further efforts may seek to ensure early and accurate stratification through augmented scoring.

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