1
|
Foss-Skiftesvik J, Larsen CC, Stoltze UK, Kofod T, Hove H, Bøgeskov L, Østergaard E. The role of pathogenic TCF12 variants in children with coronal craniosynostosis-a systematic review with addition of two novel cases. Childs Nerv Syst 2024:10.1007/s00381-024-06544-z. [PMID: 39060747 DOI: 10.1007/s00381-024-06544-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024]
Abstract
Craniosynostosis constitutes one of the most common congenital cranial malformations, affecting approximately 6/10,0000 live births. A genetic etiology has long been known for several forms of syndromic craniosynostosis, including pathogenic variants in TWIST1 and FGFR3 in children with Saethre-Chotzen and Muenke syndrome. Over the last decade, reports of genetic aberrations in TCF12 in children with craniosynostosis have emerged, in particular in cases with premature closure of the coronal suture(s). In this study, we, therefore, systematically reviewed the rapidly growing knowledge of TCF12-related coronal craniosynostosis, clearly illustrating its high degree of genotype and phenotype variability. With the two novel cases presented, at least 113 cases of TCF12-related coronal craniosynostosis have currently been reported. By pooling data from several prospectively collected undifferentiated craniosynostosis cohorts (ntotal = 770), we estimate a prevalence of pathogenic TCF12 variants of at least 2%. Overall, pathogenic germline variants in TCF12 are relatively frequent in children with coronal craniosynostosis, accounting for ∼10-20% of TWIST1- and FGFR1/2/3-negative cases, with even higher rates for bicoronal and syndromic cases. Genetic counseling is recommended for all children with craniosynostosis, and involvement of the coronal suture(s) should precipitate TCF12 testing.
Collapse
Affiliation(s)
- Jon Foss-Skiftesvik
- Department of Neurosurgery, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark.
- The Pediatric Oncology Research Laboratory, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark.
| | - Carl Christian Larsen
- Department of Neurosurgery, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark
| | - Ulrik Kristoffer Stoltze
- Department of Clinical Genetics, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark
| | - Thomas Kofod
- Department of Oral and Maxillofacial Surgery, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark
| | - Hanne Hove
- Center for Rare Diseases, Department of Paediatrics and Adolescent Medicine, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark
| | - Lars Bøgeskov
- Department of Neurosurgery, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark
| | - Elsebet Østergaard
- Department of Clinical Genetics, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
2
|
Celik NB, Sezer A, Genel N, Savas-Erdeve S, Karaman İ, Cetinkaya S. Case report: An adolescent female with anosmic hypogonadotropic hypogonadism, intellectual disability, and papillary thyroid carcinoma: heterozygous deletion of TCF12. Front Endocrinol (Lausanne) 2024; 15:1426916. [PMID: 39036055 PMCID: PMC11257912 DOI: 10.3389/fendo.2024.1426916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 06/19/2024] [Indexed: 07/23/2024] Open
Abstract
Background Isolated hypogonadotropic hypogonadism is a heterogeneous clinical entity. There is a growing list of molecular defects that are associated with hypogonadotropic hypogonadism (HH). TCF12, a recently identified molecular defect, causes craniosynostosis and is suggested to be used as a biomarker for prognosis in various cancer types. Recently, TCF12 variants were shown in a cohort with HH. Case presentation A 15.3 years old female patient was referred to the endocrinology clinic for obesity. She had been gaining weight from mid-childhood. She had her first epileptic seizure at the age of 15.1 years and mildly elevated thyroid autoantibodies were detected during evaluation for etiology of seizures. She had not experienced menarche yet. She was operated for left strabismus at the age of 7 years. School performance was poor and she was receiving special education. Tanner stage of breast was 1 and pubic hair was 3. The endocrine workup revealed hypogonadotropic hypogonadism. Also, the Sniffin' Sticks test detected anosmia. Thyroid ultrasonography was performed due to the mildly elevated thyroid autoantibodies, and thyroid nodules with punctate calcifications were detected. Total thyroidectomy and central lymph node dissection were performed regarding the cytological findings of the nodules and multicentric papillary thyroid carcinoma with no lymph node metastasis was detected on pathology specimens. Regarding the phenotypic features of the patients, whole exome sequencing was performed and heterozygous deletion of exon 1 and exon 6-8 in TCF12 was detected. Conclusion Haploinsufficiency of TCF12 causes anosmic HH. Probably due to the incomplete penetrance and variable expressivity of the disease, patients could display variable phenotypic features such as intellectual disability, developmental delay, and craniosynostosis. Further description of new cases with TCF12 variations could enhance our understanding of craniosynostosis and its potential link to Kallmann syndrome associated with this gene.
Collapse
Affiliation(s)
- Nur Berna Celik
- Department of Pediatrics, Division of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Children’s Health and Disease, Health Implementation and Research Center, Ankara, Türkiye
| | - Abdullah Sezer
- Department of Genetics, Health Sciences University, Dr Sami Ulus Children’s Health and Disease, Health Implementation and Research Center, Ankara, Türkiye
| | - Nebiyye Genel
- Department of Pathology, Health Sciences University, Dr Sami Ulus Children’s Health and Disease, Health Implementation and Research Center, Ankara, Türkiye
| | - Senay Savas-Erdeve
- Department of Pediatrics, Division of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Children’s Health and Disease, Health Implementation and Research Center, Ankara, Türkiye
| | - İbrahim Karaman
- Department of Pediatric Surgery, Health Sciences University, Dr Sami Ulus Children’s Health and Disease, Health Implementation and Research Center, Ankara, Türkiye
| | - Semra Cetinkaya
- Department of Pediatrics, Division of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Children’s Health and Disease, Health Implementation and Research Center, Ankara, Türkiye
| |
Collapse
|
3
|
Davis EE, Balasubramanian R, Kupchinsky ZA, Keefe DL, Plummer L, Khan K, Meczekalski B, Heath KE, Lopez-Gonzalez V, Ballesta-Martinez MJ, Margabanthu G, Price S, Greening J, Brauner R, Valenzuela I, Cusco I, Fernandez-Alvarez P, Wierman ME, Li T, Lage K, Barroso PS, Chan YM, Crowley WF, Katsanis N. TCF12 haploinsufficiency causes autosomal dominant Kallmann syndrome and reveals network-level interactions between causal loci. Hum Mol Genet 2021; 29:2435-2450. [PMID: 32620954 DOI: 10.1093/hmg/ddaa120] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/27/2020] [Accepted: 06/11/2020] [Indexed: 12/12/2022] Open
Abstract
Dysfunction of the gonadotropin-releasing hormone (GnRH) axis causes a range of reproductive phenotypes resulting from defects in the specification, migration and/or function of GnRH neurons. To identify additional molecular components of this system, we initiated a systematic genetic interrogation of families with isolated GnRH deficiency (IGD). Here, we report 13 families (12 autosomal dominant and one autosomal recessive) with an anosmic form of IGD (Kallmann syndrome) with loss-of-function mutations in TCF12, a locus also known to cause syndromic and non-syndromic craniosynostosis. We show that loss of tcf12 in zebrafish larvae perturbs GnRH neuronal patterning with concomitant attenuation of the orthologous expression of tcf3a/b, encoding a binding partner of TCF12, and stub1, a gene that is both mutated in other syndromic forms of IGD and maps to a TCF12 affinity network. Finally, we report that restored STUB1 mRNA rescues loss of tcf12 in vivo. Our data extend the mutational landscape of IGD, highlight the genetic links between craniofacial patterning and GnRH dysfunction and begin to assemble the functional network that regulates the development of the GnRH axis.
Collapse
Affiliation(s)
- Erica E Davis
- Center for Human Disease Modeling, Duke University, Durham, NC 27701, USA.,Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Ravikumar Balasubramanian
- Harvard Reproductive Endocrine Science Center, Massachusetts General Hospital (MGH), Boston, MA 02114, USA.,Harvard Medical School, Boston, MA 02115, USA
| | | | - David L Keefe
- Harvard Reproductive Endocrine Science Center, Massachusetts General Hospital (MGH), Boston, MA 02114, USA
| | - Lacey Plummer
- Harvard Reproductive Endocrine Science Center, Massachusetts General Hospital (MGH), Boston, MA 02114, USA
| | - Kamal Khan
- Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Blazej Meczekalski
- Department of Gynecological Endocrinology, Poznan University of Medical Sciences, 60-512 Poznan, Poland
| | - Karen E Heath
- Institute of Medical and Molecular Genetics (INGEMM) Hospital Universitario La Paz, Universidad Autonoma de Madrid, IdiPAZ, Madrid, Spain and Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, 28046 Madrid, Spain
| | - Vanesa Lopez-Gonzalez
- Medical Genetics Unit, Department of Pediatrics, Hospital Clinico, Universitario Virgen de la Arrixaca, IMIB-Arrixaca, Murcia, Spain and CIBERER, ISCIII, 28046 Madrid, Spain
| | - Mary J Ballesta-Martinez
- Medical Genetics Unit, Department of Pediatrics, Hospital Clinico, Universitario Virgen de la Arrixaca, IMIB-Arrixaca, Murcia, Spain and CIBERER, ISCIII, 28046 Madrid, Spain
| | | | - Susan Price
- Northampton General Hospital, Northampton NN1 5BD, UK
| | - James Greening
- University Hospitals of Leicester, Leicester LE3 9QP, UK
| | - Raja Brauner
- Pediatric Endocrinology Unit, Fondation Ophtalmologique Adolphe de Rothschild and Université Paris Descartes, 75019 Paris, France
| | - Irene Valenzuela
- Department of Clinical and Molecular Genetics, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.,Medicine Genetics Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Ivon Cusco
- Department of Clinical and Molecular Genetics, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.,Medicine Genetics Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Paula Fernandez-Alvarez
- Department of Clinical and Molecular Genetics, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.,Medicine Genetics Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Margaret E Wierman
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Taibo Li
- Department of Surgery, Massachusetts General Hospital, Boston, MA 02114, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.,Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Kasper Lage
- Harvard Medical School, Boston, MA 02115, USA.,Department of Surgery, Massachusetts General Hospital, Boston, MA 02114, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Priscila Sales Barroso
- Divisao de Endocrinologia e Metabologia, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, 05403-900 Brazil
| | - Yee-Ming Chan
- Division of Endocrinology, Department of Pediatrics, Boston Children's Hospital, Boston, MA 02115, USA
| | - William F Crowley
- Harvard Medical School, Boston, MA 02115, USA.,MGH Center for Human Genetics & The Endocrine Unit, Department of Medicine, Massachusetts General Hospital, Boston MA 02114, USA
| | - Nicholas Katsanis
- Center for Human Disease Modeling, Duke University, Durham, NC 27701, USA.,Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| |
Collapse
|
4
|
Kennedy-Williams P, Care H, Dalton L, Horton J, Kearney A, Rooney N, Hotton M, Pinckston M, Huggons E, Culshaw L, Kilcoyne S, Johnson D, Wilkie AOM, Wall S. Neurodevelopmental, Cognitive, and Psychosocial Outcomes for Individuals With Pathogenic Variants in the TCF12 Gene and Associated Craniosynostosis. J Craniofac Surg 2021; 32:1263-1268. [PMID: 33904513 DOI: 10.1097/scs.0000000000007535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
ABSTRACT Heterozygous mutations in the TCF12 gene were discovered in 2013 as a cause of craniosynostosis (CS). However, limited information regarding the behavioral phenotypic profile is available. Here the authors provide the first detailed study of the neurodevelopmental, cognitive, and psychosocial outcomes for patients with a pathogenic TCF12 variant and associated CS.A clinical casenote audit was conducted at the 4 UK highly specialized craniofacial centers. A total of 35 patients aged 18 months to 10 years with an identified TCF12 pathogenic variant and CS (bicoronal CS = 45.7%, unicoronal CS = 40.0%, multisuture = 14.3%) were included. Standardized screening and/or assessment of full-scale intelligence quotient, social communication, development, behavior, and self-concept were conducted.In the majority of cases, outcomes were consistent with age-related expectations. About 75% of patients demonstrated no delay across any early developmental domain, while 84.6% demonstrated full-scale intelligence quotient scores within 1 standard deviation of the population mean. Significant behavioral difficulties were demonstrated by parent reporters in 26.3% to 42.1% of cases (dependent upon domain). Clinically elevated social communication profiles were present in (41.7%) of parent-reported cases. Levels of self-concept (at age 10) were consistent with age-related normative data.Most patients with a TCF12 pathogenic variant had a mild behavioral and cognitive phenotype, although they may be at a slightly increased risk of social communication difficulties and psychosocial issues. Although not measured statistically, there were no clear associations between surgical history and cognitive, behavioral, or psychosocial outcomes. This paper highlights the need for robust integrated developmental assessment of all CS patients, particularly those with an identified syndrome.
Collapse
Affiliation(s)
| | - Helen Care
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| | - Louise Dalton
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| | - Jo Horton
- Birmingham Children's Hospital Craniofacial Unit, Birmingham Women's and Children's Hospital, Birmingham
| | - Anna Kearney
- Alder Hey Craniofacial Unit, Alder Hey Children's NHS Foundation Trust, Liverpool
| | - Natasha Rooney
- Great Ormond Street Hospital for Children Craniofacial Unit, Great Ormond Street NHS Foundation Trust, London, United Kingdom
| | - Matthew Hotton
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| | - Molly Pinckston
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| | - Esme Huggons
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| | - Laura Culshaw
- Alder Hey Craniofacial Unit, Alder Hey Children's NHS Foundation Trust, Liverpool
| | - Sarah Kilcoyne
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| | - David Johnson
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| | - Andrew O M Wilkie
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
- MRC Weatherall Institute of Molecular Medicine, Oxford
| | - Steven Wall
- Oxford Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust
| |
Collapse
|
5
|
Yoon JG, Hahn HM, Choi S, Kim SJ, Aum S, Yu JW, Park EK, Shim KW, Lee MG, Kim YO. Molecular Diagnosis of Craniosynostosis Using Targeted Next-Generation Sequencing. Neurosurgery 2020; 87:294-302. [PMID: 31754721 DOI: 10.1093/neuros/nyz470] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 08/18/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Genetic factors play an important role in the pathogenesis of craniosynostosis (CRS). However, the molecular diagnosis of CRS in clinical practice is limited because of its heterogeneous etiology. OBJECTIVE To investigate the genomic landscape of CRS in a Korean cohort and also to establish a practical diagnostic workflow by applying targeted panel sequencing. METHODS We designed a customized panel covering 34 CRS-related genes using in-solution hybrid capture method. We enrolled 110 unrelated Korean patients with CRS, including 40 syndromic and 70 nonsyndromic cases. A diagnostic pipeline was established by combining in-depth clinical reviews and multiple bioinformatics tools for analyzing single-nucleotide variants (SNV)s and copy number variants (CNV)s. RESULTS The diagnostic yield of the targeted panel was 30.0% (33/110). Twenty-five patients (22.7%) had causal genetic variations resulting from SNVs or indels in 9 target genes (TWIST1, FGFR3, TCF12, ERF, FGFR2, ALPL, EFNB1, FBN1, and SKI, in order of frequency). CNV analysis identified 8 (7.3%) additional patients with chromosomal abnormalities involving 1p32.3p31.3, 7p21.1, 10q26, 15q21.3, 16p11.2, and 17p13.3 regions; these cases mostly presented with syndromic clinical features. CONCLUSION The present study shows the wide genomic landscape of CRS, revealing various genetic factors for CRS pathogenesis. In addition, the results demonstrate that an efficient diagnostic workup using target panel sequencing provides great clinical utility in the molecular diagnosis of CRS.
Collapse
Affiliation(s)
- Jihoon G Yoon
- Department of Pharmacology, Research Center for Human Genetics, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Hyung Min Hahn
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Sungkyoung Choi
- Department of Pharmacology, Research Center for Human Genetics, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Soo Jung Kim
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Sowon Aum
- Department of Pharmacology, Research Center for Human Genetics, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Jung Woo Yu
- Department of Pharmacology, Research Center for Human Genetics, College of Medicine, Yonsei University, Seoul, Republic of Korea.,Department of Pediatric Neurosurgery, Craniofacial Reforming and Reconstruction Clinic, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Eun Kyung Park
- Department of Pediatric Neurosurgery, Craniofacial Reforming and Reconstruction Clinic, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Kyu Won Shim
- Department of Pediatric Neurosurgery, Craniofacial Reforming and Reconstruction Clinic, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Min Goo Lee
- Department of Pharmacology, Research Center for Human Genetics, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Yong Oock Kim
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, College of Medicine, Yonsei University, Seoul, Republic of Korea
| |
Collapse
|
6
|
The influence of balanced complex chromosomal rearrangements on preimplantation embryonic development potential and molecular karyotype. BMC Genomics 2020; 21:326. [PMID: 32349655 PMCID: PMC7191696 DOI: 10.1186/s12864-020-6731-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 04/14/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Balanced complex chromosome rearrangements (BCCR) are balanced chromosomal structural aberrations that involve two or more chromosomes and at least three breakpoints. It is very rare in the population. The objective is to explore the difference of influence of three types of BCCR on early embryonic development and molecular karyotype. RESULTS Twelve couples were recruited including four couples of three-way rearrangements carriers (group A), three couples of double two-way translocations carriers (group B) and five couples of exceptional CCR carriers (group C). A total of 243 oocytes were retrievedin the seventeen preimplantation genetic testing (PGT) cycles, and 207 of these were available for fertilization. After intracytoplasmic sperm injection, 181oocytes normally fertilized. The rates of embryos forming on day3 in three groups were 87.88, 97.78 and77.14%, which was significantly different (P = 0.01). Compared with group B, the rate of embryo formation was statistically significantly lower in group C (P = 0.01). Furthermore, the rates of high-quality blastocysts in three group were 14.71, 48.15 and 62.96%, respectively, which was significantly different (P = 0.00). Compared with group B andC, the rate of high-quality blastocysts in group A was statistically significantly lower (P = 0.00;P = 0.00). Comprehensive chromosome analysis was performed on 83 embryos, including 75 trophectodermcellsand 8 blastomeres. Except 7 embryos failed to amplify, 9.01%embryos were diagnosed as euploidy, and 90.91% were diagnosed as abnormal. As for group A, the euploid embryo rate was 10.71%and the abnormal embryo rate was 89.29%. In group B,the euploid embryo rate was 3.85%, the abnormal embryo rate was 96.15%. The euploid embryo rate was 13.04%, the abnormal embryo rate was 86.96% in group C. There were no significant differences among the three groups (P = 0.55). CONCLUSIONS The lowest rate of high quality blastocysts has been for three-way rearrangements and the lowest rate of euploidy has been for double two-way translocations, although no significant difference. Different types of BCCR maybe have little effect on the embryonic molecular karyotype. The difference of influence of BCCR on early embryonic developmentandmolecular karyotypeshould be further studied.
Collapse
|
7
|
Lecaudey LA, Sturmbauer C, Singh P, Ahi EP. Molecular mechanisms underlying nuchal hump formation in dolphin cichlid, Cyrtocara moorii. Sci Rep 2019; 9:20296. [PMID: 31889116 PMCID: PMC6937230 DOI: 10.1038/s41598-019-56771-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 12/12/2019] [Indexed: 12/15/2022] Open
Abstract
East African cichlid fishes represent a model to tackle adaptive changes and their connection to rapid speciation and ecological distinction. In comparison to bony craniofacial tissues, adaptive morphogenesis of soft tissues has been rarely addressed, particularly at the molecular level. The nuchal hump in cichlids fishes is one such soft-tissue and exaggerated trait that is hypothesized to play an innovative role in the adaptive radiation of cichlids fishes. It has also evolved in parallel across lakes in East Africa and Central America. Using gene expression profiling, we identified and validated a set of genes involved in nuchal hump formation in the Lake Malawi dolphin cichlid, Cyrtocara moorii. In particular, we found genes differentially expressed in the nuchal hump, which are involved in controlling cell proliferation (btg3, fosl1a and pdgfrb), cell growth (dlk1), craniofacial morphogenesis (dlx5a, mycn and tcf12), as well as regulators of growth-related signals (dpt, pappa and socs2). This is the first study to identify the set of genes associated with nuchal hump formation in cichlids. Given that the hump is a trait that evolved repeatedly in several African and American cichlid lineages, it would be interesting to see if the molecular pathways and genes triggering hump formation follow a common genetic track or if the trait evolved in parallel, with distinct mechanisms, in other cichlid adaptive radiations and even in other teleost fishes.
Collapse
Affiliation(s)
- Laurène Alicia Lecaudey
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway
| | - Christian Sturmbauer
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
| | - Pooja Singh
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
- Institute of Biological Sciences, University of Calgary, 2500 University Dr NW, Calgary, AB, T2N 1N4, Canada
| | - Ehsan Pashay Ahi
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria.
- Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, SE-75 236, Uppsala, Sweden.
| |
Collapse
|
8
|
Lattanzi W, Barba M, Di Pietro L, Boyadjiev SA. Genetic advances in craniosynostosis. Am J Med Genet A 2017; 173:1406-1429. [PMID: 28160402 DOI: 10.1002/ajmg.a.38159] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 12/30/2016] [Accepted: 01/06/2017] [Indexed: 12/22/2022]
Abstract
Craniosynostosis, the premature ossification of one or more skull sutures, is a clinically and genetically heterogeneous congenital anomaly affecting approximately one in 2,500 live births. In most cases, it occurs as an isolated congenital anomaly, that is, nonsyndromic craniosynostosis (NCS), the genetic, and environmental causes of which remain largely unknown. Recent data suggest that, at least some of the midline NCS cases may be explained by two loci inheritance. In approximately 25-30% of patients, craniosynostosis presents as a feature of a genetic syndrome due to chromosomal defects or mutations in genes within interconnected signaling pathways. The aim of this review is to provide a detailed and comprehensive update on the genetic and environmental factors associated with NCS, integrating the scientific findings achieved during the last decade. Focus on the neurodevelopmental, imaging, and treatment aspects of NCS is also provided.
Collapse
Affiliation(s)
- Wanda Lattanzi
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Rome, Italy.,Latium Musculoskeletal Tıssue Bank, Rome, Italy
| | - Marta Barba
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Lorena Di Pietro
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Simeon A Boyadjiev
- Division of Genomic Medicine, Department of Pediatrics, Davis Medical Center, University of California, Sacramento, California
| |
Collapse
|
9
|
Goos JAC, Fenwick AL, Swagemakers SMA, McGowan SJ, Knight SJL, Twigg SRF, Hoogeboom AJM, van Dooren MF, Magielsen FJ, Wall SA, Mathijssen IMJ, Wilkie AOM, van der Spek PJ, van den Ouweland AMW. Identification of Intragenic Exon Deletions and Duplication of TCF12 by Whole Genome or Targeted Sequencing as a Cause of TCF12-Related Craniosynostosis. Hum Mutat 2016; 37:732-6. [PMID: 27158814 PMCID: PMC4949653 DOI: 10.1002/humu.23010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 04/08/2016] [Accepted: 04/14/2016] [Indexed: 11/09/2022]
Abstract
TCF12-related craniosynostosis can be caused by small heterozygous loss-of-function mutations in TCF12. Large intragenic rearrangements, however, have not been described yet. Here, we present the identification of four large rearrangements in TCF12 causing TCF12-related craniosynostosis. Whole-genome sequencing was applied on the DNA of 18 index cases with coronal synostosis and their family members (43 samples in total). The data were analyzed using an autosomal-dominant disease model. Structural variant analysis reported intragenic exon deletions (of sizes 84.9, 8.6, and 5.4 kb) in TCF12 in three different families. The results were confirmed by deletion-specific PCR and dideoxy-sequence analysis. Separately, targeted sequencing of the TCF12 genomic region in a patient with coronal synostosis identified a tandem duplication of 11.3 kb. The pathogenic effect of this duplication was confirmed by cDNA analysis. These findings indicate the importance of screening for larger rearrangements in patients suspected to have TCF12-related craniosynostosis.
Collapse
Affiliation(s)
- Jacqueline A C Goos
- Erasmus MC, Department of Plastic and Reconstructive Surgery and Hand Surgery, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Aimee L Fenwick
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Sigrid M A Swagemakers
- Erasmus MC, Department of Bioinformatics, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Simon J McGowan
- Computational Biology Research Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Samantha J L Knight
- NIHR Biomedical Research Centre, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Stephen R F Twigg
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - A Jeannette M Hoogeboom
- Erasmus MC, Department of Clinical Genetics, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marieke F van Dooren
- Erasmus MC, Department of Clinical Genetics, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Frank J Magielsen
- Erasmus MC, Department of Clinical Genetics, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Steven A Wall
- Craniofacial Unit, Department of Plastic and Reconstructive Surgery, Oxford University Hospitals NHS Trust, John Radcliffe Hospital, Oxford, UK
| | - Irene M J Mathijssen
- Erasmus MC, Department of Plastic and Reconstructive Surgery and Hand Surgery, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Andrew O M Wilkie
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.,Craniofacial Unit, Department of Plastic and Reconstructive Surgery, Oxford University Hospitals NHS Trust, John Radcliffe Hospital, Oxford, UK
| | - Peter J van der Spek
- Erasmus MC, Department of Bioinformatics, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ans M W van den Ouweland
- Erasmus MC, Department of Clinical Genetics, University Medical Center Rotterdam, Rotterdam, The Netherlands
| |
Collapse
|
10
|
Mapping Breakpoints of Complex Chromosome Rearrangements Involving a Partial Trisomy 15q23.1-q26.2 Revealed by Next Generation Sequencing and Conventional Techniques. PLoS One 2016; 11:e0154574. [PMID: 27218255 PMCID: PMC4878739 DOI: 10.1371/journal.pone.0154574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 04/16/2016] [Indexed: 11/25/2022] Open
Abstract
Complex chromosome rearrangements (CCRs), which are rather rare in the whole population, may be associated with aberrant phenotypes. Next-generation sequencing (NGS) and conventional techniques, could be used to reveal specific CCRs for better genetic counseling. We report the CCRs of a girl and her mother, which were identified using a combination of NGS and conventional techniques including G-banding, fluorescence in situ hybridization (FISH) and PCR. The girl demonstrated CCRs involving chromosomes 3 and 8, while the CCRs of her mother involved chromosomes 3, 5, 8, 11 and 15. HumanCytoSNP-12 Chip analysis identified a 35.4 Mb duplication on chromosome 15q21.3-q26.2 in the proband and a 1.6 Mb microdeletion at chromosome 15q21.3 in her mother. The proband inherited the rearranged chromosomes 3 and 8 from her mother, and the duplicated region on chromosome 15 of the proband was inherited from the mother. Approximately one hundred genes were identified in the 15q21.3-q26.2 duplicated region of the proband. In particular, TPM1, SMAD6, SMAD3, and HCN4 may be associated with her heart defects, and HEXA, KIF7, and IDH2 are responsible for her developmental and mental retardation. In addition, we suggest that a microdeletion on the 15q21.3 region of the mother, which involved TCF2, TCF12, ADMA10 and AQP9, might be associated with mental retardation. We delineate the precise structures of the derivative chromosomes, chromosome duplication origin and possible molecular mechanisms for aberrant phenotypes by combining NGS data with conventional techniques.
Collapse
|
11
|
Piard J, Rozé V, Czorny A, Lenoir M, Valduga M, Fenwick AL, Wilkie AOM, Maldergem LV. TCF12 microdeletion in a 72-year-old woman with intellectual disability. Am J Med Genet A 2015; 167A:1897-901. [PMID: 25871887 PMCID: PMC4654244 DOI: 10.1002/ajmg.a.37083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 02/11/2015] [Indexed: 01/26/2023]
Abstract
Heterozygous mutations in TCF12 were recently identified as an important cause of craniosynostosis. In the original series, 14% of patients with a mutation in TCF12 had significant developmental delay or learning disability. We report on the first case of TCF12 microdeletion, detected by array‐comparative genomic hybridization, in a 72‐year‐old patient presenting with intellectual deficiency and dysmorphism. Multiplex ligation‐dependent probe amplification analysis indicated that exon 19, encoding the functionally important basic helix‐loop‐helix domain, was included in the deleted segment in addition to exon 20. We postulate that the TCF12 microdeletion is responsible for this patient's intellectual deficiency and facial phenotype. © 2015 The Authors. American Journal of Medical Genetics Part A Published by Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Juliette Piard
- Centre de génétique humaine, Université de Franche-Comté, Besançon, France
| | - Virginie Rozé
- Laboratoire de génétique, histologie et biologie de la reproduction, Université de Franche-Comté, Besançon, France
| | - Alain Czorny
- Service de neurochirurgie, Université de Franche-Comté, Besançon, France
| | - Marion Lenoir
- Service de radiologie pédiatrique, Université de Franche-Comté, Besançon, France
| | - Mylène Valduga
- Laboratoire de génétique, Université de Nancy, Nancy, France
| | - Aimée L Fenwick
- Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, UK
| | - Andrew O M Wilkie
- Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, UK
| | | |
Collapse
|
12
|
Expanding the mutation spectrum in 182 Spanish probands with craniosynostosis: identification and characterization of novel TCF12 variants. Eur J Hum Genet 2014; 23:907-14. [PMID: 25271085 DOI: 10.1038/ejhg.2014.205] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/26/2014] [Accepted: 08/29/2014] [Indexed: 11/08/2022] Open
Abstract
Craniosynostosis, caused by the premature fusion of one or more of the cranial sutures, can be classified into non-syndromic or syndromic and by which sutures are affected. Clinical assignment is a difficult challenge due to the high phenotypic variability observed between syndromes. During routine diagnostics, we screened 182 Spanish craniosynostosis probands, implementing a four-tiered cascade screening of FGFR2, FGFR3, FGFR1, TWIST1 and EFNB1. A total of 43 variants, eight novel, were identified in 113 (62%) patients: 104 (92%) detected in level 1; eight (7%) in level 2 and one (1%) in level 3. We subsequently screened additional genes in the probands with no detected mutation: one duplication of the IHH regulatory region was identified in a patient with craniosynostosis Philadelphia type and five variants, four novel, were identified in the recently described TCF12, in probands with coronal or multisuture affectation. In the 19 Saethre-Chotzen syndrome (SCS) individuals in whom a variant was detected, 15 (79%) carried a TWIST1 variant, whereas four (21%) had a TCF12 variant. Thus, we propose that TCF12 screening should be included for TWIST1 negative SCS patients and in patients where the coronal suture is affected. In summary, a molecular diagnosis was obtained in a total of 119/182 patients (65%), allowing the correct craniosynostosis syndrome classification, aiding genetic counselling and in some cases provided a better planning on how and when surgical intervention should take place and, subsequently the appropriate clinical follow up.
Collapse
|
13
|
Closing the Gap: Genetic and Genomic Continuum from Syndromic to Nonsyndromic Craniosynostoses. CURRENT GENETIC MEDICINE REPORTS 2014; 2:135-145. [PMID: 26146596 DOI: 10.1007/s40142-014-0042-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Craniosynostosis, a condition that includes the premature fusion of one or multiple cranial sutures, is a relatively common birth defect in humans and the second most common craniofacial anomaly after orofacial clefts. There is a significant clinical variation among different sutural synostoses as well as significant variation within any given single-suture synostosis. Craniosynostosis can be isolated (i.e., nonsyndromic) or occurs as part of a genetic syndrome (e.g., Crouzon, Pfeiffer, Apert, Muenke, and Saethre-Chotzen syndromes). Approximately 85 % of all cases of craniosynostosis are nonsyndromic. Several recent genomic discoveries are elucidating the genetic basis for nonsyndromic cases and implicate the newly identified genes in signaling pathways previously found in syndromic craniosynostosis. Published epidemiologic and phenotypic studies clearly demonstrate that nonsyndromic craniosynostosis is a complex and heterogeneous condition supporting a strong genetic component accompanied by environmental factors that contribute to the pathogenetic network of this birth defect. Large population, rather than single-clinic or hospital-based studies is required with phenotypically homogeneous subsets of patients to further understand the complex genetic, maternal, environmental, and stochastic factors contributing to nonsyndromic craniosynostosis. Learning about these variables is a key in formulating the basis of multidisciplinary and lifelong care for patients with these conditions.
Collapse
|