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such guidelines, has been mainly excused by cost–benefit explanations. Introduction of novel sequencing techniques (denoted next-generation sequencing or NGS) has dramatically reduced the cost for DNA sequencing (14) . The term NGS includes principally
Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology, University Regional Hospital of Patras, Rio, Greece
Mount Auburn Hospital, Harvard Medical School Teaching Hospital, Cambridge, Massachusetts, USA
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expression of the IGD phenotype in this ethnic subpopulation ( 1 ). Given that next-generation sequencing (NGS) has emerged a huge number of genes and variation in multiple diseases and disorders, we utilized whole exome sequencing (WES) to examine if
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led to the use of targeted next generation sequencing (NGS) assays. These enable multiple known disease-causative genes to be sequenced in parallel alongside initial clinical assessment and biochemical investigations, potentially avoiding the need for
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Next-generation sequencing (NGS) is of great benefit to clinical practice in terms of identifying genetic alterations. This study aims to clarify the gene background and its influence on thyroid tumor in Chinese population. NGS data and corresponding clinicopathological features (sex, age, tumor size, extrathyroidal invasion, metastasis, multifocality and TNM stage) were collected and analyzed retrospectively from 2844 individual thyroid tumor samples during July 2021 to August 2022. 2337 (82%) of the cohort possess genetic alterations including BRAF (71%), RAS (4%), RET/PTC (4%), TERT (3%), RET (2.2%) and TP53 (1.4%). Diagnostic sensitivity before surgery can be significantly increased from 0.76 to 0.91 when cytology is supplemented by NGS. Our results show that BRAF positive papillary thyroid cancer (PTC) patients tend to have elder age, smaller tumor size, less vascular invasion, more frequent tumor multifocality and significantly higher cervical lymph node metastatic rate. Mutation at RET gene codon 918 and 634 is strongly correlated with medullary thyroid cancer (MTC), However it did not display more invasive clinical characteristics. TERT positive patients are more likely to have elder age, larger tumor size, more tumor invasiveness, and more advanced TNM stage, indicating poor prognosis. Patients with TERT, RET/PTC1 and CHEK2 mutation are more susceptible to lateral lymph node metastasis. In conclusion. NGS can be a useful tool which provides practical gene evidence in the process of diagnosis and treatment in thyroid tumors.
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alternatives such as targeted therapies. Although Landa and coworkers ( 1 ) as well as Xu and Ghossein ( 8 ) reported an extensive investigation on PDTC, we still need to learn more about the driving molecular alterations. Using a next-generation sequencing
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INSERM Unité 1203 (DEFE), Université de Montpellier, Montpellier, France
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Département d'Endocrinologie et de Gynécologie Pédiatrique, Hôpital Arnaud de Villeneuve, Université de Montpellier, Montpellier, France
INSERM Unité 1203 (DEFE), Université de Montpellier, Montpellier, France
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observation of pubertal virilization in the context of CAIS led to complete the genetic analysis by next-generation sequencing (NGS) of genes implicated in DSD. Mutations in these genes have been associated with sexual determination/differentiation alterations
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46,XY DSD patients between 2016 and 2022 and compare the efficiency of two different next-generation sequencing (NGS) methods, targeted gene panel sequencing (TPS), and whole-exome sequencing (WES). Through analysis and discussion of sequencing
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of smell in approximately 50% of patients, referred to as normosmic isolated hypogonadotropic hypogonadism (nIHH) ( 3 ). With recent advances in next-generation sequencing (NGS) techniques, more than 60 causative genes for IGD with a diverse mode of
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CHU Lille, Service de Biochimie Hormonologie, Métabolisme, Nutrition-Oncologie, Centre de Biologie Pathologie Génétique, Lille, France
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in patients with PCC or PGL by next-generation sequencing to identify familial tumors. Welander et al. ( 7 ) described one PCC patient with a germline variant of KIF1B classified as disease-causing in their cohort thus representing a prevalence of
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Inserm/CNRS UMR 1283/8199, Pasteur Institute of Lille, EGID, Lille, France
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Univ. Lille, Inserm, CHU Lille, U1286 – Infinite – Institute for Translational Research in Inflammation, Lille, France
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mosaicism have been reported to date ( 12 , 13 , 14 , 15 , 16 ). Indeed, identification of MEN1 mosaicism remains challenging in the routine practice of diagnosis laboratories and consequently is not systematically performed. Next-generation sequencing