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Carmona-Hidalgo B, Martín-Gómez C, Herrera-Ramos E, Rodríguez-López R, Fontanet LN, Moreno JC, Blasco-Amaro JA, Léger J, Dario-Ortigoza-Escobar J. Systematic review of thyroid function in NKX2-1-related disorders: Screening and diagnosis. PLoS One 2024; 19:e0303880. [PMID: 38990976 PMCID: PMC11238965 DOI: 10.1371/journal.pone.0303880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 05/02/2024] [Indexed: 07/13/2024] Open
Abstract
BACKGROUND NKX2-1-related disorders (NKX2-1-RD) are rare conditions affecting lung, thyroid, and brain development, primarily caused by pathogenic variants or deletions in the NKX2-1 gene. Congenital hypothyroidism (CH) is a common endocrine manifestation, leading to irreversible intellectual disability if left untreated. OBJECTIVES The aim was to evaluate the current evidence for the use of screening and diagnostic techniques for endocrine alterations in patients with NKX2-1-RD. METHODS This systematic review was reported following the PRISMA guidelines. Two separate research questions in PICO format were addressed to cover initial screening and diagnosis procedures for endocrine diseases in patients with NKX2-1-RD. Eligibility criteria focused on patients with genetic confirmation of the disease and hypothyroidism. Various databases were searched, and data were extracted and assessed independently by two reviewers. RESULTS Out of 1012 potentially relevant studies, 46 were included, for a total of 113 patients. CH was the most frequent endocrine alteration (45% of patients). Neonatal screening was reported in only 21% of patients based on blood TSH measurements. TSH thresholds varied widely across studies, making hypothyroidism detection ranges difficult to establish. Diagnostic tests using serum TSH were used to diagnose hypothyroidism or confirm its presence. 35% of patients were diagnosed at neonatal age, and 42% at adult age. Other hormonal dysfunctions identified due to clinical signs, such as anterior pituitary deficiencies, were detected later in life. Thyroid scintigraphy and ultrasonography allowed for the description of the thyroid gland in 30% of cases of hypothyroidism. Phenotypic variability was observed in individuals with the same variants, making genotype-phenotype correlations challenging. CONCLUSION This review highlights the need for standardized protocols in endocrine screening for NKX2-1-RD, emphasizing the importance of consistent methodology and hormone threshold levels. Variability in NKX2-1 gene variants further complicates diagnostic efforts. Future research should concentrate on optimizing early screening protocols and diagnostic strategies.
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Affiliation(s)
- Beatriz Carmona-Hidalgo
- Health Technology Assessment Area-AETSA, Andalusian Public Foundation for Progress and Health (“Fundación Progreso y Salud”–“FPS”), Seville, Spain
| | - Carmen Martín-Gómez
- Health Technology Assessment Area-AETSA, Andalusian Public Foundation for Progress and Health (“Fundación Progreso y Salud”–“FPS”), Seville, Spain
- Research Group HUM604: Lifestyle Development in the Life Cycle and Health Promotion, University of Huelva, Huelva, Spain
| | - Estefanía Herrera-Ramos
- Evaluation Unit of the Canary Islands Health Service (SESCS), Canary Islands Health Research Institute Foundation (FIISC), Santa Cruz of Tenerife, Spain
| | - Rocío Rodríguez-López
- Health Technology Assessment Area-AETSA, Andalusian Public Foundation for Progress and Health (“Fundación Progreso y Salud”–“FPS”), Seville, Spain
| | - Laia-Nou Fontanet
- Department of Child Neurology, Movement Disorders Unit, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - José C. Moreno
- Thyroid Molecular Laboratory, Institute for Medical and Molecular Genetics (INGEMM). Research Institute of Paz University Hospital (IdiPAZ), Madrid, Spain
- U-753 The Rare Diseases Networking Biomedical Research Centre (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan Antonio Blasco-Amaro
- Health Technology Assessment Area-AETSA, Andalusian Public Foundation for Progress and Health (“Fundación Progreso y Salud”–“FPS”), Seville, Spain
| | - Juliane Léger
- European Reference Network on Rare Endocrine Conditions (Endo-ERN), Amsterdam, The Netherlands
- Endocrinology-Diabetology Department, Assistance Publique-Hôpitaux de Paris, Robert Debre´ University Hospital, Reference Center for Growth and Development Endocrine Diseases, Paris, France
- Université Paris Cité, NeuroDiderot, Institut National de la Santé et de la Recherche Médicale (INSERM 1141), Paris, France
| | - Juan Dario-Ortigoza-Escobar
- Department of Child Neurology, Movement Disorders Unit, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- U-703 Centre for Biomedical Research on Rare Diseases (CIBER-ER), Instituto de Salud Carlos III, Barcelona, Spain
- European Reference Network for Rare Neurological Diseases (ERN-RND), Tübingen, Germany
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Skwara J, Nowicki M, Sharif L, Milanowski Ł, Dulski J, Elert-Dobkowska E, Skrzypek K, Hoffman-Zacharska D, Koziorowski D, Sławek J. Differential diagnosis of Huntington's disease- neurological aspects of NKX2-1-related disorders. J Neural Transm (Vienna) 2024:10.1007/s00702-024-02800-3. [PMID: 38916623 DOI: 10.1007/s00702-024-02800-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 06/12/2024] [Indexed: 06/26/2024]
Abstract
Benign hereditary chorea (BHC) is an inherited neurological disorder consisting of childhood-onset, nonprogressive chorea, generally without any other manifestations. In most reported cases, the inheritance of BHC is autosomal dominant but both incomplete penetrance and variable expressivity are observed and can be caused by NKX2-1 mutations. The spectrum contains choreoathetosis, congenital hypothyroidism, and neonatal respiratory distress syndrome. The neurological symptoms can be misdiagnosed as Huntington's disease (HD). The two Polish families were diagnosed with NKX2-1 gene mutations and a literature review concerning the NKX2-1-related disorders was conducted. All family members were examined by experienced movement disorders specialists. PubMed database was searched to obtain previously described NKX2-1 cases. Whole exome sequencing (WES) was performed in one proband (Family A) and direct NKX2-1 sequencing in the second (Family B). Two Polish families were diagnosed with NKX2-1 gene mutations (p.Trp208Leu and p.Cys117Alafs*8). In one family, the co-occurrence of HD was reported. Forty-nine publications were included in the literature review and symptoms of 195 patients with confirmed NKX2-1 mutation were analyzed. The most common symptoms were chorea and choreiform movements, and delayed motor milestones. The NKX2-1 mutation should always be considered as a potential diagnosis in families with chorea, even with a family history of HD. Lack of chorea does not exclude the NKX2-1-related disorders.
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Affiliation(s)
- Julia Skwara
- Student's Scientific Group, Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Maciej Nowicki
- Student's Scientific Group, Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Lucia Sharif
- Student's Scientific Group, Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Łukasz Milanowski
- Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Ludwika Kondratowicza 8, Warsaw, 03-242, Poland.
| | - Jarosław Dulski
- Department of Neurology and Stroke, St. Adalbert Hospital, Gdańsk, Poland
- Department of Neurology, Mayo Clinic, Jacksonville, FL, USA
| | | | - Katarzyna Skrzypek
- Department of Medical Genetics, Institute of Mother and Child, Warsaw, Poland
| | | | - Dariusz Koziorowski
- Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Ludwika Kondratowicza 8, Warsaw, 03-242, Poland
| | - Jarosław Sławek
- Department of Neurology and Stroke, St. Adalbert Hospital, Gdańsk, Poland
- Division of Neurological and Psychiatric Nursing, Faculty of Health Sciences, Medical University of Gdansk, Gdańsk, Poland
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Malik P, Chen YA, Mathew BB, Munoz DG, Selvi BT, Vanjare HA, Jasper A, Mannam P, Bharatha A, Mathur S. Topographical distribution and prevalence of basal duct-like recess sign in a cohort of Papillary Craniopharyngioma-novel findings and implications. Neuroradiology 2024; 66:947-953. [PMID: 38625616 DOI: 10.1007/s00234-024-03355-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 04/07/2024] [Indexed: 04/17/2024]
Abstract
PURPOSE Basal duct-like recess (DR) sign serves as a specific marker of papillary craniopharyngiomas (PCPs) of the strictly third-ventricular (3 V) topography. Origins of this sign are poorly understood with limited validation in external cohorts. METHODS In this retrospective study, MRIs of pathologically proven PCPs were reviewed and evaluated for tumor topography, DR sign prevalence, and morphological subtypes. RESULTS Twenty-three cases with 24 MRIs satisfied our inclusion criteria. Median age was 44.5 years with a predominant male distribution (M/F ratio 4.7:1). Overall, strictly 3 V was the commonest tumor topography (8/24, 33.3%), and tumors were most commonly solid-cystic (10/24, 41.7%). The prevalence of DR sign was 21.7% (5/23 cases), all with strictly 3 V topography and with a predominantly solid consistency. The sensitivity, specificity and positive and negative predictive value of the DR sign for strict 3 V topography was 62.5%, 100%, 100% and 84.2% respectively. New pertinent findings associated with the DR sign were observed in our cohort. This included development of the cleft-like variant of DR sign after a 9-year follow-up initially absent at baseline imaging. Additionally, cystic dilatation of the basal tumor cleft at the pituitary stalk-tumor junction and presence of a vascular structure overlapping the DR sign were noted. Relevant mechanisms, hypotheses, and implications were explored. CONCLUSION We confirm the DR sign as a highly specific marker of the strictly 3 V topography in PCPs. While embryological and molecular factors remain pertinent in understanding origins of the DR sign, non-embryological mechanisms may play a role in development of the cleft-like variant.
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Affiliation(s)
- Prateek Malik
- Division of Neuroradiology, Department of Medical Imaging, St. Michael's Hospital, University of Toronto, 30 Bond St, Toronto, ON, M5B 1W8, Canada
| | - Yingming Amy Chen
- Division of Neuroradiology, Department of Medical Imaging, St. Michael's Hospital, University of Toronto, 30 Bond St, Toronto, ON, M5B 1W8, Canada
| | | | - David G Munoz
- Department of Pathology, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | | | | | - Anitha Jasper
- Department of Radiodiagnosis, Christian Medical College, Vellore, Tamil Nadu, India
| | - Pavithra Mannam
- Department of Radiodiagnosis, Christian Medical College, Vellore, Tamil Nadu, India
| | - Aditya Bharatha
- Division of Neuroradiology, Department of Medical Imaging, St. Michael's Hospital, University of Toronto, 30 Bond St, Toronto, ON, M5B 1W8, Canada
| | - Shobhit Mathur
- Division of Neuroradiology, Department of Medical Imaging, St. Michael's Hospital, University of Toronto, 30 Bond St, Toronto, ON, M5B 1W8, Canada.
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Nou-Fontanet L, Martín-Gómez C, Isabel-Gómez R, Bachoud-Lévi AC, Zorzi G, Capuano A, Blasco-Amaro JA, Ortigoza-Escobar JD. Systematic review of drug therapy for chorea in NXK2-1-related disorders: Efficacy and safety evidence from case studies and series. Eur J Neurol 2023; 30:3928-3948. [PMID: 37694681 DOI: 10.1111/ene.16038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/25/2023] [Accepted: 08/08/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND The NKX2-1-related disorders (NKX2-1-RD) is a rare disorder characterized by choreiform movements along with respiratory and endocrine abnormalities. The European Reference Network of Rare Neurological Disorders funded by the European Commission conducted a systematic review to assess drug treatment of chorea in NKX2-1-RD, aiming to provide clinical recommendations for its management. METHODS A systematic pairwise review using various databases, including MEDLINE, Embase, Cochrane, CINAHL, and PsycInfo, was conducted. The review included patients diagnosed with chorea and NKX2-1-RD genetic diagnosis, drug therapy as intervention, no comparator, and outcomes of chorea improvement and adverse events. The methodological quality of the studies was assessed, and the study protocol was registered in PROSPERO. RESULTS Of the 1417 studies examined, 28 studies met the selection criteria, consisting of 68 patients. The studies reported 22 different treatments for chorea, including carbidopa/levodopa, tetrabenazine, clonazepam, methylphenidate, carbamazepine, topiramate, trihexyphenidyl, haloperidol, propranolol, risperidone, and valproate. No clinical improvements were observed with carbidopa/levodopa, tetrabenazine, or clonazepam, and various adverse effects were reported. However, most patients treated with methylphenidate experienced improvements in chorea and reported only a few negative effects. The quality of evidence was determined to be low. CONCLUSIONS The management of chorea in individuals with NKX2-1-RD presents significant heterogeneity and lack of clarity. While the available evidence suggests that methylphenidate may be effective in improving chorea symptoms, the findings should be interpreted with caution due to the limitations of the studies reviewed. Nonetheless, more rigorous and comprehensive studies are necessary to provide sufficient evidence for clinical recommendations.
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Affiliation(s)
- Laia Nou-Fontanet
- Department of Paediatric Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Carmen Martín-Gómez
- Health Technology Assessment Area-AETSA, Andalusian Public Foundation for Progress and Health ("Fundación Progreso y Salud"-"FPS"), Seville, Spain
- Research Group HUM604: Lifestyle Development in the Life Cycle and Health Promotion, University of Huelva, Huelva, Spain
| | - Rebeca Isabel-Gómez
- Health Technology Assessment Area-AETSA, Andalusian Public Foundation for Progress and Health ("Fundación Progreso y Salud"-"FPS"), Seville, Spain
| | - Anne-Catherine Bachoud-Lévi
- Assistance Publique-Hôpitaux de Paris, Henri Mondor Hospital, National Center of Reference for Huntington's Disease, Créteil, France
- Département d'Etudes Cognitives, École Normale Supérieure, PSL University, Paris, France
- European Reference Network for Rare Neurological Diseases (ERN-RND), Tübingen, Germany
| | - Giovanna Zorzi
- Department of Pediatric Neuroscience, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Alessandro Capuano
- Movement Disorders Clinic, Department of Neurosciences, Bambino Gesù Children's Hospital, Rome, Italy
| | - Juan Antonio Blasco-Amaro
- Health Technology Assessment Area-AETSA, Andalusian Public Foundation for Progress and Health ("Fundación Progreso y Salud"-"FPS"), Seville, Spain
| | - Juan Darío Ortigoza-Escobar
- Department of Paediatric Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
- European Reference Network for Rare Neurological Diseases (ERN-RND), Tübingen, Germany
- U-703 Centre for Biomedical Research on Rare Diseases (CIBER-ER), Instituto de Salud Carlos III, Barcelona, Spain
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Heidari MM, Madani Manshadi SA, Eshghi AR, Talebi F, Khatami M, Bragança J, Ordooei M, Chamani R, Ghasemi F. Mutational and bioinformatics analysis of the NKX2.1 gene in a cohort of Iranian pediatric patients with congenital hypothyroidism (CH). Physiol Int 2022; 109:261-277. [DOI: https:/doi.org/10.1556/2060.2022.00224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Congenital hypothyroidism (CH) occurs with a relatively alarming prevalence in infants, and if not diagnosed and treated in time, it can have devastating consequences for the development of the nervous system. CH is associated with genetic changes in several genes that encode transcription factors responsible for thyroid development, including mutations in the NK2 homeobox 1 (NKX2.1) gene, which encodes the thyroid transcription factor-1 (TTF-1). Although CH is frequently observed in pediatric populations, there is still a limited understanding of the genetic factors and molecular mechanisms contributing to this disease. The sequence of the NKX2.1 gene was investigated in 75 pediatric patients with CH by polymerase chain reaction (PCR), single-stranded conformation polymorphism (SSCP), and direct DNA sequencing. Four missense heterozygous variations were identified in exon 3 of the NKX2.1 gene, including three novel missense variations, namely c.708A>G, p.Gln202Arg; c.713T>G, p.Tyr204Asp; c.833T>G, p.Tyr244Asp, and a previously reported variant rs781133468 (c.772C>G, p.His223Gln). Importantly, these variations occur in highly conserved residues of the TTF-1 DNA-binding domain and were predicted by bioinformatics analysis to alter the protein structure, with a probable alteration in the protein function. These results indicate that nucleotide changes in the NKX2.1 gene may contribute to CH pathogenesis.
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Affiliation(s)
| | | | | | | | | | - José Bragança
- Faculty of Medicine and Biomedical Sciences, Algarve Biomedical Centre Research Institute, University of Algarve, Faro, Portugal
| | - Mahtab Ordooei
- Department of Pediatrics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Heidari MM, Madani Manshadi SA, Eshghi AR, Talebi F, Khatami M, Bragança J, Ordooei M, Chamani R, Ghasemi F. Mutational and bioinformatics analysis of the NKX2.1 gene in a cohort of Iranian pediatric patients with congenital hypothyroidism (CH). Physiol Int 2022; 109:261-277. [DOI: 10.1556/2060.2022.00224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 03/01/2022] [Accepted: 04/04/2022] [Indexed: 11/19/2022]
Abstract
Abstract
Congenital hypothyroidism (CH) occurs with a relatively alarming prevalence in infants, and if not diagnosed and treated in time, it can have devastating consequences for the development of the nervous system. CH is associated with genetic changes in several genes that encode transcription factors responsible for thyroid development, including mutations in the NK2 homeobox 1 (NKX2.1) gene, which encodes the thyroid transcription factor-1 (TTF-1). Although CH is frequently observed in pediatric populations, there is still a limited understanding of the genetic factors and molecular mechanisms contributing to this disease. The sequence of the NKX2.1 gene was investigated in 75 pediatric patients with CH by polymerase chain reaction (PCR), single-stranded conformation polymorphism (SSCP), and direct DNA sequencing. Four missense heterozygous variations were identified in exon 3 of the NKX2.1 gene, including three novel missense variations, namely c.708A>G, p.Gln202Arg; c.713T>G, p.Tyr204Asp; c.833T>G, p.Tyr244Asp, and a previously reported variant rs781133468 (c.772C>G, p.His223Gln). Importantly, these variations occur in highly conserved residues of the TTF-1 DNA-binding domain and were predicted by bioinformatics analysis to alter the protein structure, with a probable alteration in the protein function. These results indicate that nucleotide changes in the NKX2.1 gene may contribute to CH pathogenesis.
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Affiliation(s)
| | | | | | | | | | - José Bragança
- Faculty of Medicine and Biomedical Sciences, Algarve Biomedical Centre Research Institute, University of Algarve, Faro, Portugal
| | - Mahtab Ordooei
- Department of Pediatrics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Altered pituitary morphology as a sign of benign hereditary chorea caused by TITF1/NKX2.1 mutations. Neurogenetics 2022; 23:91-102. [PMID: 35079915 PMCID: PMC8960566 DOI: 10.1007/s10048-021-00680-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 12/23/2021] [Indexed: 11/21/2022]
Abstract
Benign hereditary chorea (BHC) is a rare genetically heterogeneous movement disorder, in which conventional neuroimaging has been reported as normal in most cases. Cystic pituitary abnormalities and features of empty sella have been described in only 7 patients with BHC to date. We present 4 patients from 2 families with a BHC phenotype, 3 of whom underwent targeted pituitary MR imaging and genetic testing. All four patients in the two families displayed a classic BHC phenotype. The targeted pituitary MR imaging demonstrated abnormal pituitary sella morphology. Genetic testing was performed in three patients, and showed mutations causing BHC in three of the patients, as well as identifying a novel nonsense mutation of the TITF1/NKX2-1 gene in one of the patients. The presence of the abnormal pituitary sella in two affected members of the same family supports the hypothesis that this sign is a distinct feature of the BHC phenotype spectrum due to mutations in the TITF1 gene. Interestingly, these abnormalities seem to develop in adult life and are progressive. They occur in at least 26% of patients affected with Brain-lung-thyroid syndrome. As a part of the management of these patients we recommend to perform follow-up MRI brain with dedicated pituitary imaging also in adult life as the abnormality can occur years after the onset of chorea.
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O'Mahony E, Ellenbogen J, Avula S. Persisting embryonal infundibular recess in a case of TITF-1 gene mutation. Neuroradiology 2022; 64:1033-1035. [PMID: 35199208 DOI: 10.1007/s00234-022-02905-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/18/2022] [Indexed: 11/25/2022]
Abstract
The thyroid transcription factor 1 (TITF-1) gene plays an important role in the development of the ventral forebrain, thyroid and lungs. Mutations of this gene are known to cause benign hereditary chorea (BHC) and can cause the full spectrum of abnormalities seen in the brain-thyroid-lung syndrome. Abnormalities of the ventral forebrain on imaging have been variably documented in the literature. Multiple previous reports describe a cystic pituitary mass, as well as duplication of the pituitary stalk and communication between an intrasellar cyst and the third ventricle. The initial MRI performed in our case was interpreted as an intrasellar cyst, but the high-resolution MRI performed later was able to resolve this as a persisting embryonal infundibular recess (PEIR), rather than the cystic pituitary mass which has previously been described. This case illustrates the role of the TITF-1 gene in the development of the pituitary and hypothalamus.
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Affiliation(s)
- Elizabeth O'Mahony
- Department of Radiology, Alder Hey Children's Hospital NHS Foundation Trust, East Prescot Road, Liverpool, L14 5AB, UK. E.o'
| | - Jonathan Ellenbogen
- Department of Neurosurgery, Alder Hey Children's Hospital NHS Foundation Trust, East Prescot Road, Liverpool, L14 5AB, UK
| | - Shivaram Avula
- Department of Radiology, Alder Hey Children's Hospital NHS Foundation Trust, East Prescot Road, Liverpool, L14 5AB, UK
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Vishnopolska SA, Mercogliano MF, Camilletti MA, Mortensen AH, Braslavsky D, Keselman A, Bergadá I, Olivieri F, Miranda L, Marino R, Ramírez P, Pérez Garrido N, Patiño Mejia H, Ciaccio M, Di Palma MI, Belgorosky A, Martí MA, Kitzman JO, Camper SA, Pérez-Millán MI. Comprehensive Identification of Pathogenic Gene Variants in Patients With Neuroendocrine Disorders. J Clin Endocrinol Metab 2021; 106:1956-1976. [PMID: 33729509 PMCID: PMC8208670 DOI: 10.1210/clinem/dgab177] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 02/12/2021] [Indexed: 02/03/2023]
Abstract
PURPOSE Congenital hypopituitarism (CH) can present in isolation or with other birth defects. Mutations in multiple genes can cause CH, and the use of a genetic screening panel could establish the prevalence of mutations in known and candidate genes for this disorder. It could also increase the proportion of patients that receive a genetic diagnosis. METHODS We conducted target panel genetic screening using single-molecule molecular inversion probes sequencing to assess the frequency of mutations in known hypopituitarism genes and new candidates in Argentina. We captured genomic deoxyribonucleic acid from 170 pediatric patients with CH, either alone or with other abnormalities. We performed promoter activation assays to test the functional effects of patient variants in LHX3 and LHX4. RESULTS We found variants classified as pathogenic, likely pathogenic, or with uncertain significance in 15.3% of cases. These variants were identified in known CH causative genes (LHX3, LHX4, GLI2, OTX2, HESX1), in less frequently reported genes (FOXA2, BMP4, FGFR1, PROKR2, PNPLA6) and in new candidate genes (BMP2, HMGA2, HNF1A, NKX2-1). CONCLUSION In this work, we report the prevalence of mutations in known CH genes in Argentina and provide evidence for new candidate genes. We show that CH is a genetically heterogeneous disease with high phenotypic variation and incomplete penetrance, and our results support the need for further gene discovery for CH. Identifying population-specific pathogenic variants will improve the capacity of genetic data to predict eventual clinical outcomes.
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Affiliation(s)
- Sebastian Alexis Vishnopolska
- Instituto de Biociencias, Biotecnología y Biología Traslacional (IB3), Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
- Instituto de Química Biología en Exactas y Naturales (IQUIBICEN-CONICET), Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
| | - Maria Florencia Mercogliano
- Instituto de Química Biología en Exactas y Naturales (IQUIBICEN-CONICET), Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
| | - Maria Andrea Camilletti
- Instituto de Biociencias, Biotecnología y Biología Traslacional (IB3), Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
- Instituto de Química Biología en Exactas y Naturales (IQUIBICEN-CONICET), Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
| | - Amanda Helen Mortensen
- Deptartment of Human Genetics, University of Michigan Medical School, Ann Arbor, MI 48198-5618, USA
| | - Debora Braslavsky
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá,” (CEDIE), FEI – CONICET – División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Ciudad de Buenos Aires, C1425EFD, Argentina
| | - Ana Keselman
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá,” (CEDIE), FEI – CONICET – División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Ciudad de Buenos Aires, C1425EFD, Argentina
| | - Ignacio Bergadá
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá,” (CEDIE), FEI – CONICET – División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Ciudad de Buenos Aires, C1425EFD, Argentina
| | - Federico Olivieri
- Instituto de Química Biología en Exactas y Naturales (IQUIBICEN-CONICET), Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
| | - Lucas Miranda
- Instituto de Química Biología en Exactas y Naturales (IQUIBICEN-CONICET), Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
| | - Roxana Marino
- Servicio de Endocrinología, Hospital Garrahan, Ciudad de Buenos Aires, C1245, Argentina
| | - Pablo Ramírez
- Servicio de Endocrinología, Hospital Garrahan, Ciudad de Buenos Aires, C1245, Argentina
| | - Natalia Pérez Garrido
- Servicio de Endocrinología, Hospital Garrahan, Ciudad de Buenos Aires, C1245, Argentina
| | - Helen Patiño Mejia
- Servicio de Endocrinología, Hospital Garrahan, Ciudad de Buenos Aires, C1245, Argentina
| | - Marta Ciaccio
- Servicio de Endocrinología, Hospital Garrahan, Ciudad de Buenos Aires, C1245, Argentina
| | - Maria Isabel Di Palma
- Servicio de Endocrinología, Hospital Garrahan, Ciudad de Buenos Aires, C1245, Argentina
| | - Alicia Belgorosky
- Hospital de Pediatría Garrahan-CONICET, Ciudad de Buenos Aires, Argentina
| | - Marcelo Adrian Martí
- Instituto de Química Biología en Exactas y Naturales (IQUIBICEN-CONICET), Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
| | - Jacob Otto Kitzman
- Deptartment of Human Genetics, University of Michigan Medical School, Ann Arbor, MI 48198-5618, USA
| | - Sally Ann Camper
- Deptartment of Human Genetics, University of Michigan Medical School, Ann Arbor, MI 48198-5618, USA
- Correspondence: Sally A. Camper, PhD, University of Michigan Medical School, Ann Arbor, MI 48198-5618, United States. E-mail: ; or Maria Ines Perez-Millan, PhD, University of Buenos Aires, Buenos Aires, C1428EHA, Argentina. E-mail:
| | - Maria Ines Pérez-Millán
- Instituto de Biociencias, Biotecnología y Biología Traslacional (IB3), Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad de Buenos Aires,Argentina
- Correspondence: Sally A. Camper, PhD, University of Michigan Medical School, Ann Arbor, MI 48198-5618, United States. E-mail: ; or Maria Ines Perez-Millan, PhD, University of Buenos Aires, Buenos Aires, C1428EHA, Argentina. E-mail:
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10
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Magrinelli F, Balint B, Bhatia KP. Challenges in Clinicogenetic Correlations: One Gene - Many Phenotypes. Mov Disord Clin Pract 2021; 8:299-310. [PMID: 33816657 PMCID: PMC8015894 DOI: 10.1002/mdc3.13165] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/02/2020] [Accepted: 12/19/2020] [Indexed: 12/25/2022] Open
Abstract
Background Progress in genetics – particularly the advent of next‐generation sequencing (NGS) – has enabled an unparalleled gene discovery and revealed unmatched complexity of genotype–phenotype correlations in movement disorders. Among other things, it has emerged that mutations in one and the same gene can cause multiple, often markedly different phenotypes. Consequently, movement disorder specialists have increasingly experienced challenges in clinicogenetic correlations. Objectives To deconstruct biological phenomena and mechanistic bases of phenotypic heterogeneity in monogenic movement disorders and neurodegenerative diseases. To discuss the evolving role of movement disorder specialists in reshaping disease phenotypes in the NGS era. Methods This scoping review details phenomena contributing to phenotypic heterogeneity and their underlying mechanisms. Results Three phenomena contribute to phenotypic heterogeneity, namely incomplete penetrance, variable expressivity and pleiotropy. Their underlying mechanisms, which are often shared across phenomena and non‐mutually exclusive, are not fully elucidated. They involve genetic factors (ie, different mutation types, dynamic mutations, somatic mosaicism, intragenic intra‐ and inter‐allelic interactions, modifiers and epistatic genes, mitochondrial heteroplasmy), epigenetic factors (ie, genomic imprinting, X‐chromosome inactivation, modulation of genetic and chromosomal defects), and environmental factors. Conclusion Movement disorders is unique in its reliance on clinical judgment to accurately define disease phenotypes. This has been reaffirmed by the NGS revolution, which provides ever‐growing sequencing data and fuels challenges in variant pathogenicity assertions for such clinically heterogeneous disorders. Deep phenotyping, with characterization and continual updating of “core” phenotypes, and comprehension of determinants of genotype–phenotype complex relationships are crucial for clinicogenetic correlations and have implications for the diagnosis, treatment and counseling.
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Affiliation(s)
- Francesca Magrinelli
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology University College London London United Kingdom.,Department of Neurosciences, Biomedicine and Movement Sciences University of Verona Verona Italy
| | - Bettina Balint
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology University College London London United Kingdom.,Department of Neurology University Hospital Heidelberg Heidelberg Germany
| | - Kailash P Bhatia
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology University College London London United Kingdom
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11
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Baizabal-Carvallo JF, Cardoso F. Chorea in children: etiology, diagnostic approach and management. J Neural Transm (Vienna) 2020; 127:1323-1342. [DOI: 10.1007/s00702-020-02238-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/01/2020] [Indexed: 01/07/2023]
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12
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Prasad R, Nicholas AK, Schoenmakers N, Barton J. Haploinsufficiency of NKX2-1 in Brain-Lung-Thyroid Syndrome with Additional Multiple Pituitary Dysfunction. Horm Res Paediatr 2020; 92:340-344. [PMID: 31707387 DOI: 10.1159/000503683] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/25/2019] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Heterozygous mutations or haploinsufficiency of NKX2-1 are associated with the brain-lung-thyroid syndrome incorporating primary hypothyroidism, respiratory distress, and neurological disturbances. CASE PRESENTATION We report a patient presenting in the neonatal period with multiple pituitary hormone deficiency including central hypothyroidism and hypoadrenalism, growth hormone deficiency, undetectable gonadotrophins, and a small anterior pituitary on MRI. CGH microarray revealed haploinsufficiency for NKX2.1 and during subsequent follow-up, she has exhibited the classic triad of brain-lung-thyroid syndrome with undetectable tissue on thyroid ultrasonography. Whilst the role of NKX2-1 is well described in murine pituitary development, this report constitutes the first description of multiple pituitary dysfunction in humans associated with the syndrome and haploinsufficiency NKX2-1. CONCLUSION The report highlights a potential need for pituitary screening in patients with established brain-lung-thyroid syndrome and implicates NKX2.1 in human pituitary disease.
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Affiliation(s)
- Rathi Prasad
- Department of Paediatric Endocrinology, Royal London Hospital, Barts Health NHS Trust, London, United Kingdom,
| | - Adeline K Nicholas
- University of Cambridge Metabolic Research Laboratories, Wellcome Trust-Medical Research Council Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Nadia Schoenmakers
- University of Cambridge Metabolic Research Laboratories, Wellcome Trust-Medical Research Council Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - John Barton
- Department of Paediatric Endocrinology, Bristol Royal Hospital for Children, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
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13
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Gonçalves D, Lourenço L, Guardiano M, Castro-Correia C, Sampaio M, Leão M. Chiari Malformation Type I in a Patient with a Novel NKX2-1 Mutation. J Pediatr Neurosci 2019; 14:169-172. [PMID: 31649781 PMCID: PMC6798275 DOI: 10.4103/jpn.jpn_108_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 07/09/2018] [Accepted: 08/12/2019] [Indexed: 11/04/2022] Open
Abstract
Chiari Malformation Type 1 is a congenital, condition characterized by abnormally shaped cerebellar tonsils that are displaced below the level of the foramen magnum. NKX2-1 gene encodes a transcription factor expressed during early development of thyroid, lung, and forebrain, and germline NKX2-1 mutations can lead to dysfunction in any of these three organs, resulting in brain-lung-thyroid syndrome. There have been few reports of structural brain anomalies in patients with an NKX2-1-related disorder. We report the first case of a girl with a genetically identified mutation in NKX2-1 that presents with a Chiari Malformation Type 1, eventually expanding the phenotypic spectrum of NKX2-1-related disorders while also highlighting a novel heterozygous pathogenic variant at exon 3 that disrupts the reading framework, originating an NKX2-1 protein with a different C-terminal.
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Affiliation(s)
- Daniel Gonçalves
- Serviço de Pediatria do, Centro Hospitalar de São João, Porto, Portugal
| | - Lara Lourenço
- Serviço de Pediatria do, Centro Hospitalar de São João, Porto, Portugal
| | - Micaela Guardiano
- Serviço de Pediatria do, Centro Hospitalar de São João, Porto, Portugal
| | | | - Mafalda Sampaio
- Serviço de Pediatria do, Centro Hospitalar de São João, Porto, Portugal
| | - Miguel Leão
- Serviço de Genética do, Centro Hospitalar de São João, Porto, Portugal
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14
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The Homeodomain Transcription Factor NKX2.1 Is Essential for the Early Specification of Melanocortin Neuron Identity and Activates Pomc Expression in the Developing Hypothalamus. J Neurosci 2019; 39:4023-4035. [PMID: 30886014 DOI: 10.1523/jneurosci.2924-18.2019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/03/2019] [Accepted: 03/08/2019] [Indexed: 12/14/2022] Open
Abstract
Food intake is tightly regulated by a group of neurons present in the arcuate nucleus of the hypothalamus, which release Pomc-encoded melanocortins, the absence of which induces marked hyperphagia and early-onset obesity. Although the relevance of hypothalamic POMC neurons in the regulation of body weight and energy balance is well appreciated, little is known about the transcription factors that establish the melanocortin neuron identity during brain development and its phenotypic maintenance in postnatal life. Here, we report that the transcription factor NKX2.1 is present in mouse hypothalamic POMC neurons from early development to adulthood. Electromobility shift assays showed that NKX2.1 binds in vitro to NKX binding motifs present in the neuronal Pomc enhancers nPE1 and nPE2 and chromatin immunoprecipitation assays detected in vivo binding of NKX2.1 to nPE1 and nPE2 in mouse hypothalamic extracts. Transgenic and mutant studies performed in mouse embryos of either sex and adult males showed that the NKX motifs present in nPE1 and nPE2 are essential for their transcriptional enhancer activity. The conditional early inactivation of Nkx2.1 in the ventral hypothalamus prevented the onset of Pomc expression. Selective Nkx2.1 ablation from POMC neurons decreased Pomc expression in adult males and mildly increased their body weight and adiposity. Our results demonstrate that NKX2.1 is necessary to activate Pomc expression by binding to conserved canonical NKX motifs present in nPE1 and nPE2. Therefore, NKX2.1 plays a critical role in the early establishment of hypothalamic melanocortin neuron identity and participates in the maintenance of Pomc expression levels during adulthood.SIGNIFICANCE STATEMENT Food intake and body weight regulation depend on hypothalamic neurons that release satiety-inducing neuropeptides, known as melanocortins. Central melanocortins are encoded byPomc, and Pomc mutations may lead to hyperphagia and severe obesity. Although the importance of central melanocortins is well appreciated, the genetic program that establishes and maintains fully functional POMC neurons remains to be explored. Here, we combined molecular, genetic, developmental, and functional studies that led to the discovery of NKX2.1, a transcription factor that participates in the early morphogenesis of the developing hypothalamus, as a key player in establishing the early identity of melanocortin neurons by activating Pomc expression. Thus, Nkx2.1 adds to the growing list of genes that participate in body weight regulation and adiposity.
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15
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Parnes M, Bashir H, Jankovic J. Is Benign Hereditary Chorea Really Benign? Brain-Lung-Thyroid Syndrome Caused by NKX2-1 Mutations. Mov Disord Clin Pract 2019; 6:34-39. [PMID: 30746413 PMCID: PMC6335533 DOI: 10.1002/mdc3.12690] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/20/2018] [Accepted: 09/09/2018] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Since its localization to the NKX2-1 gene in 2002, the phenotype of the disorder historically called "benign hereditary chorea" has been expanding beyond chorea. METHODS The phenomenology of movement disorders and other symptomatology associated with mutations in NKX2-1 were characterized after a detailed evaluation of consecutive patients evaluated in our clinic over the past 3 years. RESULTS We studied 5 patients (3 females), ages 2 to 31 years, with confirmed pathogenic variants in NKX2-1. All patients exhibited chorea, gross motor delay, and gait impairment. Other symptoms included neonatal respiratory failure (n = 4), cognitive deficits (n = 3), hypothyroidism (n = 4), joint laxity (n = 2), myoclonus (n = 1), hypotonia (n = 3), and seizures (n = 1). Chorea often proved refractory to medical therapies. CONCLUSIONS The phenotype associated with pathogenic variants in NKX2-1 frequently includes disabling and often medically refractory neurological and non-neurological abnormalities. We therefore suggest that the term benign hereditary chorea be abandoned in favor of its genetic designation as NKX2-1-related disorder.
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Affiliation(s)
- Mered Parnes
- Pediatric Movement Disorders Clinic, Blue Bird Circle Clinic for Pediatric Neurology, Section of Pediatric Neurology and Developmental NeuroscienceTexas Children's HospitalHoustonTexasUSA
- Parkinson's Disease Center and Movement Disorders Clinic, Department of NeurologyBaylor College of MedicineHoustonTexasUSA
| | - Hassaan Bashir
- Parkinson's Disease Center and Movement Disorders Clinic, Department of NeurologyBaylor College of MedicineHoustonTexasUSA
| | - Joseph Jankovic
- Parkinson's Disease Center and Movement Disorders Clinic, Department of NeurologyBaylor College of MedicineHoustonTexasUSA
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16
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Sun J, Sun L, Chen W, Yin X, Lu Y, Jiang Q. A family with hypothyroidism caused by fatty acid synthase and apolipoprotein B receptor mutations. Mol Med Rep 2018; 18:4904-4912. [PMID: 30272292 PMCID: PMC6236273 DOI: 10.3892/mmr.2018.9499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 08/15/2018] [Indexed: 12/13/2022] Open
Abstract
Hypothyroidism is a disease with a genetic component. The present study aimed to identify the potential causative gene mutation in a family with hypothyroidism and to investigate its potential pathology. DNA was extracted from the affected individual and his parents, maternal aunt and maternal grandmother. Whole exome sequencing was used to examine their exomes. The potential causative genes that may have an autosomal dominant mode of inheritance were selected after variant calling and filtering. Bioinformatics analysis was utilized to predict the deleteriousness of the identified variants, and multiple sequence alignment and conserved protein domain analyses were performed using online software. Finally, Sanger sequencing was used to validate the identified variants. In the present study, a total of 50 variants were screened based on the autosomal dominant mode of inheritance. Two variants, the fatty acid synthase (FASN) and apolipoprotein B receptor (APOBR) genes, were further analyzed, as they were highly associated with hypothyroidism. Genotyping results revealed that two mutations, c.G7192T (p.A2398S) in the FASN gene and c.C1883G (p.T628R) in the APOBR gene, were fully co-segregated with established hypothyroidism phenotypes in the family. These mutations were located in the conserved α/β-hydrolase fold and Na+/Ca2+ exchanger superfamily domain of FASN and APOBR, respectively. In conclusion, the present study demonstrated that the FASN c.G7192T and APOBR c.C1883G mutations may be the potential causative variants in this Chinese hypothyroidism pedigree.
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Affiliation(s)
- Jianhua Sun
- Department of Oncology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Lizhi Sun
- Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Weijie Chen
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Xiao Yin
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Yong Lu
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Qiang Jiang
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
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17
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Barker ED, Walton E, Cecil CA, Rowe R, Jaffee SR, Maughan B, O'Connor TG, Stringaris A, Meehan AJ, McArdle W, Relton CL, Gaunt TR. A Methylome-Wide Association Study of Trajectories of Oppositional Defiant Behaviors and Biological Overlap With Attention Deficit Hyperactivity Disorder. Child Dev 2018; 89:1839-1855. [PMID: 28929496 PMCID: PMC6207925 DOI: 10.1111/cdev.12957] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In 671 mother-child (49% male) pairs from an epidemiological birth cohort, we investigated (a) prospective associations between DNA methylation (at birth) and trajectories (ages 7-13) of oppositional defiant disorder (ODD), and the ODD subdimensions of irritable and headstrong; (b) common biological pathways, indexed by DNA methylation, between ODD trajectories and attention deficit hyperactivity disorder (ADHD); (c) genetic influence on DNA methylation; and (d) prenatal risk exposure associations. Methylome-wide significant associations were identified for the ODD and headstrong, but not for irritable. Overlap analysis indicated biological correlates between ODD, headstrong, and ADHD. DNA methylation in ODD and headstrong was (to a degree) genetically influenced. DNA methylation associated with prenatal risk exposures of maternal anxiety (headstrong) and cigarette smoking (ODD and headstrong).
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18
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Attarian SJ, Leibel SL, Yang P, Alfano DN, Hackett BP, Cole FS, Hamvas A. Mutations in the thyroid transcription factor gene NKX2-1 result in decreased expression of SFTPB and SFTPC. Pediatr Res 2018; 84. [PMID: 29538355 PMCID: PMC6599453 DOI: 10.1038/pr.2018.30] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND Mutations in the NK2 homeobox 1 (NKX2-1) gene are associated with lung disease in infants and children. We hypothesize that disruption of normal surfactant gene expression with these mutations contributes to the respiratory phenotypes observed. METHODS To assess transactivational activity, cotransfection of luciferase reporter vectors containing surfactant protein B or C (SFTPB or SFTPC) promoters with NKX2-1 plasmids was performed and luciferase activity was measured. To assess the binding of mutated proteins to target DNA, electrophoretic mobility shift assays (EMSA) were performed using nuclear protein labeled with oligonucleotide probes representing NKX2-1 consensus binding sequences followed by gel electrophoresis. The effect of overexpression of wild-type (WT) and mutant NKX2-1 on SFTPB and SFTPC was evaluated with quantitative real-time PCR. RESULTS Decreased transactivation of the SFTPB promoter by both mutants and decreased transactivation of the SFTPC promoter by the L197P mutation was observed. EMSA demonstrated decreased DNA binding of both mutations to NKX2-1 consensus binding sequences. Transfection of A549 cells with NKX2-1 expression vectors demonstrated decreased stimulation of SFTPB and SFTPC expression by mutant proteins compared with that of WT. CONCLUSION Disruption of transcriptional activation of surfactant protein genes by these DNA-binding domain mutations is a plausible biological mechanism for disruption of surfactant function and subsequent respiratory distress.
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Affiliation(s)
- Stephanie J Attarian
- Edward Mallinckrodt Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine and St Louis Children's Hospital, St Louis, Missouri, USA.
| | - Sandra L Leibel
- Department of Pediatrics, University of California San Diego School of Medicine, San Diego, California
| | - Ping Yang
- Edward Mallinckrodt Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine and St Louis Children’s Hospital, St Louis, Missouri
| | - Danielle N Alfano
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Brian P Hackett
- Edward Mallinckrodt Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine and St Louis Children’s Hospital, St Louis, Missouri
| | - F Sessions Cole
- Edward Mallinckrodt Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine and St Louis Children’s Hospital, St Louis, Missouri
| | - Aaron Hamvas
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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19
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Balicza P, Grosz Z, Molnár V, Illés A, Csabán D, Gézsi A, Dézsi L, Zádori D, Vécsei L, Molnár MJ. NKX2-1 New Mutation Associated With Myoclonus, Dystonia, and Pituitary Involvement. Front Genet 2018; 9:335. [PMID: 30186310 PMCID: PMC6113386 DOI: 10.3389/fgene.2018.00335] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/03/2018] [Indexed: 11/13/2022] Open
Abstract
Background:NKX2-1 related disorders (also known as brain-lung-thyroid syndrome or benign hereditary chorea 1) are associated with a wide spectrum of symptoms. The core features are various movement disorders, characteristically chorea, less frequently myoclonus, dystonia, ataxia; thyroid disease; and lung involvement. The full triad is present in 50% of affected individuals. Numerous additional symptoms may be associated, although many of these were reported only in single cases. Pituitary dysfunction was ambiguously linked to NKX2-1 haploinsufficiency previously. Case Presentation: We examined two members of a family with motor developmental delay, mixed movement disorder (myoclonus, dystonia and chorea) and endocrinological abnormalities (peripheric thyroid disease, and pituitary hormone deficiencies). Dystonia predominated at the father, and myoclonus at the daughter. The father had hypogonadotropic hypogonadism, while the daughter was treated with growth hormone deficiency. Both patients had empty sella on MRI. Candidate gene analyses were negative. Exome sequencing detected a pathogenic stop variation (NM_003317:c.338G>A, p.Trp113*) in the NKX2-1 gene. Conclusions: This case study has two highlights. (1) It draws attention to possible pituitary dysfunction in brain-lung-thyroid syndrome, and provide further evidences that this might be linked to loss of function of the NKX2-1 gene. (2) It underscores the importance of considering NKX2-1 related disorders in the differential diagnosis of myoclonus dystonia.
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Affiliation(s)
- Péter Balicza
- Institute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary
| | - Zoltán Grosz
- Institute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary
| | - Viktor Molnár
- Institute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary
| | - Anett Illés
- Institute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary
| | - Dora Csabán
- Institute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary
| | - Andras Gézsi
- Institute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary
| | - Lívia Dézsi
- Department of Neurology, Faculty of General Medicine, Albert Szent-Györgyi Clinical Centre, Univesity of Szeged, Szeged, Hungary
| | - Dénes Zádori
- Department of Neurology, Faculty of General Medicine, Albert Szent-Györgyi Clinical Centre, Univesity of Szeged, Szeged, Hungary
| | - László Vécsei
- Department of Neurology, Faculty of General Medicine, Albert Szent-Györgyi Clinical Centre, Univesity of Szeged, Szeged, Hungary.,MTA-SZTE Neuroscience Research Group, Szeged, Hungary
| | - Mária Judit Molnár
- Institute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary
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Abstract
Resistance to thyrotropin (RTSH) is broadly defined as reduced sensitivity of thyroid follicle cells to stimulation by biologically active TSH due to genetic defects. Affected individuals have elevated serum TSH in the absence of goiter, with the severity ranging from nongoitrous isolated hyperthyrotropinemia to severe congenital hypothyroidism with thyroid hypoplasia. Conceptually, defects leading to RTSH impair both aspects of TSH-mediated action, namely thyroid hormone synthesis and gland growth. These include inactivating mutations in the genes encoding the TSH receptor and the PAX8 transcription factor. A common third cause has been genetically mapped to a locus on chromosome 15, but the underlying pathophysiology has not yet been elucidated. This review provides a succinct overview of currently defined causes of nonsyndromic RTSH, their differential diagnoses (autoimmune; partial iodine organification defects; syndromic forms of RTSH) and implications for the clinical approach to patients with RTSH.
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Affiliation(s)
- Helmut Grasberger
- University of Michigan, 6504 MSRB I, 1150 West Medical Center Drive, Ann Arbor, MI 48109, USA.
| | - Samuel Refetoff
- The University of Chicago, MC3090, 5841 South Maryland Avenue, Chicago, IL 60637, USA.
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21
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Aratani S, Fujita H, Kuroiwa Y, Usui C, Yokota S, Nakamura I, Nishioka K, Nakajima T. Murine hypothalamic destruction with vascular cell apoptosis subsequent to combined administration of human papilloma virus vaccine and pertussis toxin. Sci Rep 2016; 6:36943. [PMID: 27833142 PMCID: PMC5105142 DOI: 10.1038/srep36943] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 10/24/2016] [Indexed: 12/29/2022] Open
Abstract
Vaccination is the most powerful way to prevent human beings from contracting infectious diseases including viruses. In the case of the human papillomavirus (HPV) vaccine, an unexpectedly novel disease entity, HPV vaccination associated neuro-immunopathetic syndrome (HANS), has been reported and remains to be carefully verified. To elucidate the mechanism of HANS, we applied a strategy similar to the active experimental autoimmune encephalitis (EAE) model - one of the most popular animal models used to induce maximum immunological change in the central nervous system. Surprisingly, mice vaccinated with pertussis toxin showed neurological phenotypes that include low responsiveness of the tail reflex and locomotive mobility. Pathological analyses revealed the damage to the hypothalamus and circumventricular regions around the third ventricle, and these regions contained apoptotic vascular endothelial cells. These data suggested that HPV-vaccinated donners that are susceptible to the HPV vaccine might develop HANS under certain environmental factors. These results will give us the new insight into the murine pathological model of HANS and help us to find a way to treat of patients suffering from HANS.
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Affiliation(s)
- Satoko Aratani
- Institute of Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan.,Department of Future Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan.,Physician, Student and Researcher Support Center, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Hidetoshi Fujita
- Institute of Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan.,Department of Future Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Yoshiyuki Kuroiwa
- Department of Neurology and Stroke Center, Mizonokuchi Hospital, Teikyo University School of Medicine, Kawasaki, Japan
| | - Chie Usui
- Department of Psychiatry, Juntendo University Nerima Hospital, Nerima-ku, Tokyo, Japan
| | - Shumpei Yokota
- Institute of Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Ikuro Nakamura
- Japan Medical Research Foundation, Chiyoda-ku, Tokyo, Japan
| | - Kusuki Nishioka
- Institute of Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Toshihiro Nakajima
- Institute of Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan.,Department of Future Medical Science, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan.,Integrated Gene Editing Section (iGES), Tokyo Medical University Hospital, Shinjuku-ku, Tokyo, Japan
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22
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Jovien S, Borie R, Doummar D, Clement A, Nathan N. Respiratory Distress, Congenital Hypothyroidism and Hypotonia in a Newborn. Respiration 2016; 92:188-91. [DOI: 10.1159/000449136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/13/2016] [Indexed: 11/19/2022] Open
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23
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Abstract
PURPOSE OF REVIEW Chorea presenting in childhood and adulthood encompasses several neurological disorders, both degenerative and nonprogressive, often with a genetic basis. In this review, we discuss how modern genomic technologies are expanding our knowledge of monogenic choreic syndromes and advancing our insight into the molecular mechanisms responsible for chorea. RECENT FINDINGS A genome-wide association study in Huntington's disease identified genetic disease modifiers involved in controlling DNA repair mechanisms and stability of the HTT trinucleotide repeat expansion. Chorea is the cardinal feature of newly recognized genetic entities, ADCY5 and PDE10A-related choreas, with onset in infancy and childhood. A phenotypic overlap between chorea, ataxia, epilepsy, and neurodevelopmental disorders is becoming increasingly evident. SUMMARY The differential diagnosis of genetic conditions presenting with chorea has considerably widened, permitting a molecular diagnosis and an improved prognostic definition in an expanding number of cases. The identification of Huntington's disease genetic modifiers and new chorea-causing gene mutations has allowed the initial recognition of converging molecular pathways underlying medium spiny neurons degeneration and dysregulation of normal development and activity of basal ganglia circuits. Signalling downstream of dopamine receptors and control of cAMP levels represent a very promising target for the development of new aetiology-based treatments for chorea and other hyperkinetic disorders.
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Affiliation(s)
- Niccolò E. Mencacci
- Department of Molecular Neuroscience, UCL Institute of Neurology,
WC1N 3BG London, United Kingdom
| | - Miryam Carecchio
- Molecular Neurogenetics Unit, IRCCS Foundation Carlo Besta
Neurological Institute, Via Celoria 11, 20131 Milan, Italy
- Department of Pediatric Neurology, IRCCS Foundation Carlo Besta
Neurological Institute, Via Celoria 11, 20131 Milan, Italy
- Department of Molecular and Translational Medicine, University of
Milan Bicocca, Milan, Italy
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24
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Lawerman TF, Brandsma R, van Geffen JT, Lunsing RJ, Burger H, Tijssen MAJ, de Vries JJ, de Koning TJ, Sival DA. Reliability of phenotypic early-onset ataxia assessment: a pilot study. Dev Med Child Neurol 2016; 58:70-6. [PMID: 25995073 DOI: 10.1111/dmcn.12804] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/14/2015] [Indexed: 01/23/2023]
Abstract
AIM To investigate the interobserver agreement on phenotypic early-onset ataxia (EOA) assessment and to explore whether the Scale for Assessment and Rating of Ataxia (SARA) could provide a supportive marker. METHOD Seven movement disorder specialists provided independent phenotypic assessments of potentially ataxic motor behaviour in 40 patients (mean age 15y [range 5-34]; data derived from University Medical Center Groningen medical records 1998-2012). We determined interobserver agreement by Fleiss' kappa. Furthermore, we compared percentage SARA subscores ([subscore/total score]×100%) between 'indisputable' (primary ataxia recognition by at least six observers) and 'mixed' (ataxia recognition, unfulfilling 'indisputable' criteria) EOA phenotypes. RESULTS Agreement on phenotypic EOA assessment was statistically significant (p<0.001), but of moderate strength (Fleiss' kappa=0.45; 95% CI 0.38-0.51). During mild disease progression, percentage SARA gait subscores discriminated between 'indisputable' and 'mixed' EOA phenotypes. In patients with percentage SARA gait subscores >30%, primary ataxia was more frequently present than in those with subscores <30% (p=0.001). INTERPRETATION Among movement-disorder professionals from different disciplines, interobserver agreement on phenotypic EOA recognition is of limited strength. SARA gait subscores can provide a supportive discriminative marker between EOA phenotypes. Hopefully, future phenotypic insight will contribute to the inclusion of uniform, high-quality data in international EOA databases.
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Affiliation(s)
- Tjitske F Lawerman
- Department of Neurology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Rick Brandsma
- Department of Neurology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Joke T van Geffen
- Department of Neurology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Roelineke J Lunsing
- Department of Neurology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Huibert Burger
- General Practice, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Marina A J Tijssen
- Department of Neurology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Jeroen J de Vries
- Department of Neurology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Tom J de Koning
- Paediatrics, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Deborah A Sival
- Paediatrics, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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25
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de Gusmao CM, Kok F, Casella EB, Waugh JL. Benign hereditary chorea related to NKX2-1 with ataxia and dystonia. NEUROLOGY-GENETICS 2015; 2:e40. [PMID: 27066577 PMCID: PMC4817908 DOI: 10.1212/nxg.0000000000000040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 11/20/2015] [Indexed: 11/15/2022]
Abstract
Benign hereditary chorea (BHC) was originally described in 1967, but it was not until 2002 that linkage analysis and positional cloning identified the causative gene, NKX2-1 (also known as TTF-1).(1,2) The range of manifestations spans from isolated chorea, pulmonary disease, or thyroid dysfunction, with one-third of patients having the full brain-lung-thyroid syndrome.(3) Recent reports have expanded the NKX2-1 phenotype, as patients may present with additional movement disorders such as dystonia and myoclonus.(3) We present a case with early-onset chorea, ataxia, and dystonia.
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Affiliation(s)
- Claudio M de Gusmao
- Department of Neurology (C.M.d.G., J.L.W.), Massachusetts General Hospital, Boston, MA; Mendelics Genomic Analysis (F.K.), Sao Paulo, Brazil; Child Neurology Unit (E.B.C.), Children's Institute, Hospital das Clinicas, University of Sao Paulo, Sao Paulo, Brazil; and Department of Neurology (J.L.W.), Boston Children's Hospital, Boston, MA
| | - Fernando Kok
- Department of Neurology (C.M.d.G., J.L.W.), Massachusetts General Hospital, Boston, MA; Mendelics Genomic Analysis (F.K.), Sao Paulo, Brazil; Child Neurology Unit (E.B.C.), Children's Institute, Hospital das Clinicas, University of Sao Paulo, Sao Paulo, Brazil; and Department of Neurology (J.L.W.), Boston Children's Hospital, Boston, MA
| | - Erasmo Barbante Casella
- Department of Neurology (C.M.d.G., J.L.W.), Massachusetts General Hospital, Boston, MA; Mendelics Genomic Analysis (F.K.), Sao Paulo, Brazil; Child Neurology Unit (E.B.C.), Children's Institute, Hospital das Clinicas, University of Sao Paulo, Sao Paulo, Brazil; and Department of Neurology (J.L.W.), Boston Children's Hospital, Boston, MA
| | - Jeff L Waugh
- Department of Neurology (C.M.d.G., J.L.W.), Massachusetts General Hospital, Boston, MA; Mendelics Genomic Analysis (F.K.), Sao Paulo, Brazil; Child Neurology Unit (E.B.C.), Children's Institute, Hospital das Clinicas, University of Sao Paulo, Sao Paulo, Brazil; and Department of Neurology (J.L.W.), Boston Children's Hospital, Boston, MA
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26
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Peall KJ, Kurian MA. Benign Hereditary Chorea: An Update. TREMOR AND OTHER HYPERKINETIC MOVEMENTS (NEW YORK, N.Y.) 2015. [PMID: 26196025 PMCID: PMC4502401 DOI: 10.7916/d8rj4hm5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Benign hereditary chorea (BHC) is a childhood-onset, hyperkinetic movement disorder normally with little progression of motor symptoms into adult life. The disorder is caused by mutations to the NKX2.1 (TITF1) gene and also forms part of the “brain–lung–thyroid syndrome”, in which additional developmental abnormalities of lung and thyroid tissue are observed. In this review, we summarize the main clinical findings in “classical” BHC syndrome and discuss more recently reported atypical features, including non-choreiform movement phenotypes. We highlight additional non-motor characteristics such as cognitive impairment and psychiatric symptoms, while discussing the evidence for BHC as a developmental disorder involving impaired neural migration and other multisystem developmental abnormalities. Finally, we will discuss the efficacy of available therapies in both affected pediatric and adult cohorts. Delineation of the BHC disease spectrum will no doubt expand our understanding of this disorder, facilitating better targeting of genetic testing and establish a framework for future clinical trials.
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Affiliation(s)
- Kathryn J Peall
- MRC Centre for Neuropsychiatric Genetics and Genomics, University of Cardiff, Cardiff, UK
| | - Manju A Kurian
- Developmental Neurosciences Programme, UCL-Institute of Child Health, London, UK ; Department of Neurology, Great Ormond Street Hospital, London, UK
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