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Van Roey VL, Irvine WFE. Optimal Diagnostic and Treatment Practices for Facial Dysostosis Syndromes: A Clinical Consensus Statement Among European Experts. J Craniofac Surg 2024:00001665-990000000-01634. [PMID: 38801252 DOI: 10.1097/scs.0000000000010280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 04/11/2024] [Indexed: 05/29/2024] Open
Abstract
Facial dysostosis syndromes (FDS) are rare congenital conditions impacting facial development, often leading to diverse craniofacial abnormalities. This study addresses the scarcity of evidence on these syndromes about optimal diagnostic and treatment practices. To overcome this scarcity, European experts from ERN CRANIO collaborated to develop a clinical consensus statement through the Delphi consensus method. A systematic search of Embase, MEDLINE/PubMed, Cochrane, and Web of Science databases was conducted until February 2023. The quality of evidence was evaluated using various tools depending on the study design. Statements were subsequently formed based on literature and expert opinion, followed by a Delphi process with expert health care providers and patient representatives. In total, 92 experts from various specialties and three patient representatives were involved in the Delphi process. Over 3 voting rounds, consensus was achieved on 92 (46.9%), 58 (59.2%), and 19 (70.4%) statements, respectively. These statements cover the topics of general care; craniofacial reconstruction; the eyes and lacrimal system; upper airway management; genetics; hearing; speech; growth, feeding, and swallowing; dental treatment and orthodontics; extracranial anomalies; and psychology and cognition. The current clinical consensus statement provides valuable insights into optimal diagnostic and treatment practices and identifies key research opportunities for FDS. This consensus statement represents a significant advancement in FDS care, underlining the commitment of health care professionals to improve the understanding and management of these rare syndromes in Europe.
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Affiliation(s)
- Victor L Van Roey
- Department of Plastic and Reconstructive Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- European Reference Network for Rare and/or Complex Craniofacial Anomalies and Ear, Nose, and Throat Disorders, Rotterdam, The Netherlands
| | - Willemijn F E Irvine
- Department of Pediatric Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Evidence-Based Medicine and Methodology, Qualicura Healthcare Support Agency, Breda, The Netherlands
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Ulhaq ZS, Okamoto K, Ogino Y, Tse WKF. Dysregulation of Spliceosomes Complex Induces Retinitis Pigmentosa-Like Characteristics in sf3b4-Depleted Zebrafish. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1223-1233. [PMID: 37263342 DOI: 10.1016/j.ajpath.2023.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 06/03/2023]
Abstract
The SF3B4 gene encodes a highly conserved protein that plays a critical role in mRNA splicing. Mutations in this gene are known to cause Nager syndrome, a rare craniofacial disorder. Although SF3B4 expression is detected in the optic vesicle before it is detected in the limb and somite, the role of SF3B4 in the eye is not well understood. This study investigated the function of sf3b4 in the retina by performing transcriptome profiles, immunostaining, and behavioral analysis of sf3b4-/- mutant zebrafish. Results from this study suggest that dysregulation of the spliceosome complex affects not only craniofacial development but also retinogenesis. Zebrafish lacking functional sf3b4 displayed characteristics similar to retinitis pigmentosa (RP), marked by severe retinal pigment epithelium defects and rod degeneration. Pathway analysis revealed altered retinol metabolism and retinoic acid signaling in the sf3b4-/- mutants. Supplementation of retinoic acid rescued key cellular phenotypes observed in the sf3b4-/- mutants, offering potential therapeutic strategies for RP in the future. In conclusion, this study sheds light on the previously unknown role of SF3B4 in retinogenesis and provides insights into the underlying mechanisms of RP.
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Affiliation(s)
- Zulvikar Syambani Ulhaq
- Laboratory of Developmental Disorders and Toxicology, Center for Promotion of International Education and Research, Faculty of Agriculture, Kyushu University, Fukuoka, Japan; Research Center for Pre-clinical and Clinical Medicine, National Research and Innovation Agency, Republic of Indonesia, Cibinong, Indonesia.
| | - Keigo Okamoto
- Laboratory of Aquatic Molecular Developmental Biology, Center for Promotion of International Education and Research, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Yukiko Ogino
- Laboratory of Aquatic Molecular Developmental Biology, Center for Promotion of International Education and Research, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - William Ka Fai Tse
- Laboratory of Developmental Disorders and Toxicology, Center for Promotion of International Education and Research, Faculty of Agriculture, Kyushu University, Fukuoka, Japan.
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Vilma Fidélis-da Silva L, Henrique Kiemle-Trindade S, Noel Marzano-Rodrigues M, Hollara Medeiros L, Tonello C, Kiemle Trindade-Suedam I. Obstructive Sleep Apnea in Adults with Treacher Collins Syndrome is Related with Altered Anthropometric Measurements, Increased Blood Pressure and Impaired Quality of Life. Sleep Sci 2023; 16:139-147. [PMID: 37425978 PMCID: PMC10325840 DOI: 10.1055/s-0043-1770802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023] Open
Abstract
Objectives This study aimed at evaluating the risk for obstructive sleep apnea (OSA) and its frequency in adults with Treacher Collins syndrome (TCS). The association of OSA with excessive daytime sleepiness (EDS), respiratory symptoms, and clinical variables was also assessed. Material and Methods The subjects were prospectively screened for OSA through the Berlin Questionnaire and type I polysomnography. The Epworth Sleepiness Scale and the Respiratory Symptoms Questionnaire were used for assessing OSA-related symptoms. Quality of life was assessed by means of the Short Form 36 Health Survey. Results The sample comprised 20 adults with TCS (55.0% female), aged 22.6 ± 5.8 years. Mean values of systemic blood pressure (113.0 ± 12.6/68.0 ± 9.5mmHg), body mass index (22.9 ± 5.9kg/m 2 ), neck (34.1 ± 4.3cm), and waist circumference (80.4 ± 13.6cm) characterized the sample. A high risk for OSA was detected in 35% of the sample. Polysomnography results indicated an OSA frequency of 44.4%, with a median apnea-hypopnea index (AHI) value of 3.8 events/hour (minimum = 0.2; maximum = 77.5). Snoring (75.0%), nasal obstruction (70.0%) and EDS (20.0%) were the reported OSA-related symptoms. Quality of life median scores were 72.3 points (minimum = 45.0; maximum = 91.1). Strong positive correlations between AHI versus waist circumference and AHI versus systolic blood pressure were found. Moderate positive correlations between AHI versus body mass index and AHI versus neck circumference were detected. Negative correlation between AHI versus vitality were also observed. Conclusion Adults with TCS are at high risk for OSA, which is associated with respiratory symptoms, altered anthropometric measurements, increased systolic pressure and impairment of quality of life.
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Affiliation(s)
- Leide Vilma Fidélis-da Silva
- Sleep and Functional Imaging Units, Laboratory of Physiology, University of Sao Paulo, Hospital for Rehabilitation of Craniofacial Anomalies, Bauru, SP, Brazil
| | - Sergio Henrique Kiemle-Trindade
- Sleep and Functional Imaging Units, Laboratory of Physiology, University of Sao Paulo, Hospital for Rehabilitation of Craniofacial Anomalies, Bauru, SP, Brazil
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Medicine, University of Sao Paulo, Bauru, SP, Brazil
| | - Maria Noel Marzano-Rodrigues
- Sleep and Functional Imaging Units, Laboratory of Physiology, University of Sao Paulo, Hospital for Rehabilitation of Craniofacial Anomalies, Bauru, SP, Brazil
- Department of Biological Sciences, Bauru School of Dentistry, University of Sao Paulo, Bauru, SP, Brazil
| | - Laís Hollara Medeiros
- Sleep and Functional Imaging Units, Laboratory of Physiology, University of Sao Paulo, Hospital for Rehabilitation of Craniofacial Anomalies, Bauru, SP, Brazil
| | - Cristiano Tonello
- Hospitalar Department, University of Sao Paulo, Hospital for Rehabilitation of Craniofacial Anomalies, Bauru, SP, Brazil
| | - Ivy Kiemle Trindade-Suedam
- Sleep and Functional Imaging Units, Laboratory of Physiology, University of Sao Paulo, Hospital for Rehabilitation of Craniofacial Anomalies, Bauru, SP, Brazil
- Department of Biological Sciences, Bauru School of Dentistry, University of Sao Paulo, Bauru, SP, Brazil
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Rooijers W, Schreuder MJ, Loudon SE, Wan MJ, Dunaway DJ, Padwa BL, Forrest CR, Koudstaal MJ, Caron CJJM. Ocular and adnexal anomalies in Treacher Collins syndrome: a retrospective multicenter study. J AAPOS 2022; 26:10.e1-10.e6. [PMID: 35032653 DOI: 10.1016/j.jaapos.2021.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Treacher Collins syndrome (TCS) is a rare craniofacial disorder characterized by bilateral hypoplasia of facial structures and periorbital, ocular, and adnexal anomalies. The purpose of this multicenter study was to report the prevalence of ocular and adnexal anomalies in TCS and to identify patients at risk for visual impairment. METHODS The medical records of patients seen at four craniofacial centers were reviewed retrospectively. The following data were reported: primary and secondary ocular and adnexal anomalies, orthoptic and ophthalmological findings, and severity of TCS based on the facial deformity. RESULTS A total of 194 patients were included, of whom 49.5% were examined by an ophthalmologist or optometrist. The mean age at the first visual acuity measurement was 6.96 ± 6.83 years (range, 1.50-47.08); at final measurement, 11.55 ± 10.64 years (range, 1.75-62.58). Primary ocular anomalies were reported in 98.5% of cases, secondary anomalies in 34.5%, strabismus in 27.3%, refractive errors in 49.5%, and visual impairment in 4.6%. We found no association between ocular anomalies and visual impairment or between the severity of TCS and ocular anomalies or visual impairment, except for an increased prevalence of secondary ocular anomalies in patients with more severe manifestations of TCS. CONCLUSIONS Ocular anomalies were present in nearly all patients with TCS, even in mild cases.
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Affiliation(s)
- Wietse Rooijers
- The Dutch Craniofacial Centre, Department of Oral and Maxillofacial Surgery, Erasmus MC, Sophia's Children's Hospital, Rotterdam, The Netherlands.
| | - Marloes J Schreuder
- The Dutch Craniofacial Centre, Department of Oral and Maxillofacial Surgery, Erasmus MC, Sophia's Children's Hospital, Rotterdam, The Netherlands
| | - Sjoukje E Loudon
- Department of Ophthalmology, Erasmus MC, Sophia's Children's Hospital, Rotterdam, Rotterdam, The Netherlands
| | - Michael J Wan
- Department of Ophthalmology and Vision Sciences, The Hospital for Sick Children, Toronto, Canada
| | - David J Dunaway
- The Craniofacial Unit, Great Ormond Street Hospital, London, United Kingdom
| | - Bonnie L Padwa
- Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, Massachusetts
| | - Christopher R Forrest
- Division of Plastic and Reconstructive Surgery, Department of Surgery, The Hospital for Sick Children, Toronto, Canada
| | - Maarten J Koudstaal
- The Dutch Craniofacial Centre, Department of Oral and Maxillofacial Surgery, Erasmus MC, Sophia's Children's Hospital, Rotterdam, The Netherlands; The Craniofacial Unit, Great Ormond Street Hospital, London, United Kingdom; Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, Massachusetts
| | - Cornelia J J M Caron
- The Dutch Craniofacial Centre, Department of Oral and Maxillofacial Surgery, Erasmus MC, Sophia's Children's Hospital, Rotterdam, The Netherlands
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Abstract
Treacher Collins syndrome (TCS) is a genetic disorder that presents with a variety of craniofacial deformities. One classic feature of TCS is a steep, counterclockwise rotation of the occlusal plane, and microretrognathia with bony deficiencies in both the body and ramus of the mandible. This morphology commonly necessitates reconstruction by the craniofacial surgeon. This article discusses strategies and considerations for surgically correcting the mandibular deformity associated with TCS using mandibular distraction osteogenesis and other related techniques. The proper implementation of these techniques can yield excellent results that greatly improve quality of life in this challenging patient population.
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Rath S, Ganesh S, Mathur U, Sharma M. Necrotizing scleritis after strabismus surgery in Treacher Collins syndrome. GMS OPHTHALMOLOGY CASES 2020; 10:Doc20. [PMID: 32676265 PMCID: PMC7332715 DOI: 10.3205/oc000147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Objective: To describe a case of surgically induced scleral necrosis in Treacher Collins syndrome after strabismus surgery. Methods: A 19-year-old girl underwent bilateral squint surgery. Two weeks postoperatively, she presented with subconjunctival abscess in the left eye. The surrounding conjunctiva was markedly inflamed with raised edges. Surgical debridement, microbiological evaluation and medical management were started immediately. Screening for autoimmune and vasculitic conditions did not provide any positive results. Results: On subsequent follow-up, conjunctival retraction and an area of scleral necrosis with thinning was noted. Significant healing with antibiotics and steroids was noted within one week. The integrity of the globe was well maintained and no further procedure for tectonic support was performed. Conclusion: Surgically induced scleral necrosis can be immune-mediated or following surgical site infection. Pre-existing scleral thinning due to neuroectodermal apoptosis in Treacher Collins syndrome remains a possible explanation for the accelerated necrotising scleritis in our case.
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Affiliation(s)
- Soveeta Rath
- Department of Pediatric Ophthalmology and Strabismus, Dr. Shroff's Charity Eye Hospital, Daryaganj, New Delhi, India
| | - Suma Ganesh
- Department of Pediatric Ophthalmology and Strabismus, Dr. Shroff's Charity Eye Hospital, Daryaganj, New Delhi, India
| | - Umang Mathur
- Department of Cornea and Anterior Segment Services, Dr. Shroff's Charity Eye Hospital, Daryaganj, New Delhi, India
| | - Manasvini Sharma
- Department of Pediatric Ophthalmology and Strabismus, Dr. Shroff's Charity Eye Hospital, Daryaganj, New Delhi, India
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Yin B, Shi B, Jia ZL. [Pathogenic genes and clinical therapeutic strategies for Treacher Collins syndrome]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2019; 37:330-335. [PMID: 31218872 DOI: 10.7518/hxkq.2019.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Treacher Collins syndrome is a congenital craniofacial malformation with autosomal dominant inheritance as the main genetic pattern. In this condition, the biosynthesis of ribosomes in neural crest cells and neuroepithelial cells is blocked and the number of neural crest cells that migrate to the craniofacial region decreases, causing first and second branchial arch dysplasia. Definite causative genes include treacle ribosome biogenesis factor 1 (tcof1), RNA polymerase Ⅰ and Ⅲ subunit C (polr1c), and RNA polymerase Ⅰ and Ⅲ subunit D (polr1d). This paper provides a review of research of three major patho-genic genes, pathogenesis, phenotypic research, prevention, and treatment of the syndrome.
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Affiliation(s)
- Bin Yin
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cleft Lip and Palate Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Bing Shi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cleft Lip and Palate Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zhong-Lin Jia
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cleft Lip and Palate Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Spezzia S. Repercussões Bucais da Síndrome de Treacher Collins: revisão de literatura. JOURNAL OF ORAL INVESTIGATIONS 2018. [DOI: 10.18256/2238-510x.2018.v7i2.2683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
A Síndrome de Treacher Collins é um distúrbio do desenvolvimento de herança autossômica dominante e expressividade variável que ocorre, devido a um defeito genético com mutações no gene TCOF1, presente no cromossomo 5, que tem 26 éxons e codifica uma proteína chamada treacle. O objetivo desta pesquisa foi averiguar por intermédio de uma revisão de literatura as principais manifestações clínicas propiciadas pela síndrome em âmbito odontológico. Realizou-se revisão bibliográfica com busca nas bases de dados: PubMED e Google Acadêmico. Na base PubMED empregou-se a expressão de busca: treacher collins syndrome and dentistry and oral health. No Google Acadêmico utilizou-se a expressão de busca: síndrome de treacher collins and odontologia and saúde bucal. O diagnóstico, o tratamento bem como as orientações dispensadas aos pacientes acerca da enfermidade, devem ser precoces, e são importantes para o restabelecimento das funções mastigatória, estética e auditiva. Concluiu-se que as abordagens clínicas nesses pacientes devem ser precoces para minimizar eventuais danos e que as intervenções terapêuticas propostas visam melhorar a qualidade de vida dos pacientes acometidos pela síndrome.
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Affiliation(s)
- C. Gail Summers
- Departments of Ophthalmology and Pediatrics, University of Minnesota, Minneapolis, Minnesota
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Sharma R, Sharma B, Babber M, Singh S, Jain G. Treacher Collins syndrome: A case report and review of ophthalmic features. Taiwan J Ophthalmol 2016; 6:206-209. [PMID: 29018745 PMCID: PMC5525627 DOI: 10.1016/j.tjo.2016.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 06/27/2016] [Accepted: 07/01/2016] [Indexed: 11/28/2022] Open
Abstract
Treacher Collins syndrome is a congenital disorder with bilaterally symmetric anomalies of the structures developing from the first and second branchial arches. The ocular and orbital features are an obligatory component for the diagnosis. We presented a case of typical, complete syndrome and also reviewed the varied ophthalmological manifestations of the disease in the literature. Antimongoloid slanting of palpebral fissures and lower lid colobomas are constant features of the syndrome. However, varied ocular and lacrimal drainage anomalies are also associated. TCS is a syndrome with multiple ocular and orbital features, a knowledge of which will help in the diagnosis of incomplete forms of the syndrome.
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Affiliation(s)
- Reena Sharma
- UP Rural Institute of Medical Sciences and Research, Saifai, Etawah, Uttar Pradesh, India
| | - Brahmadeo Sharma
- UP Rural Institute of Medical Sciences and Research, Saifai, Etawah, Uttar Pradesh, India
| | - Meenu Babber
- UP Rural Institute of Medical Sciences and Research, Saifai, Etawah, Uttar Pradesh, India
| | - Sonali Singh
- UP Rural Institute of Medical Sciences and Research, Saifai, Etawah, Uttar Pradesh, India
| | - Gunjan Jain
- UP Rural Institute of Medical Sciences and Research, Saifai, Etawah, Uttar Pradesh, India
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Treacher Collins Syndrome: A Systematic Review of Evidence-Based Treatment and Recommendations. Plast Reconstr Surg 2016; 137:191-204. [PMID: 26710023 DOI: 10.1097/prs.0000000000001896] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND No reviews or guidelines are available on evidence-based treatment for the multidisciplinary approach in Treacher Collins syndrome. The authors' aim is to provide an evidence-based review of multidisciplinary treatment of Treacher Collins syndrome based on levels of evidence and supported with graded recommendations. METHODS A systematic search was performed by means of the PubMed, Web-of-Science, Embase, and Cochrane Central databases (1985 to January of 2014). Included were clinical studies (with five or more Treacher Collins syndrome patients) related to therapy, diagnosis, or risk of concomitant diseases. Level of evidence of the selected articles was rated according to the American Society of Plastic Surgeons evidence-based clinical practice guidelines. After two panelists had reviewed each abstract separately, a consensus method was used to solve any disagreements concerning article inclusion. RESULTS Of the 2433 identified articles, 63 studies (Level of Evidence II through V) were included. Conclusions and recommendations were extracted consecutively for the following items: upper airway; ear, hearing, and speech; the eye, eyelashes, and lacrimal system; growth, feeding, and swallowing; the nose; psychosocial factors; and craniofacial reconstruction. CONCLUSIONS In this systematic review, current evidence for the multidisciplinary treatment of Treacher Collins syndrome is provided, recommendations for treatment are made, and a proposed algorithm for treatment is presented. Although some topics are well supported, others, especially ocular, nasal, speech, feeding, and swallowing problems, lack sufficient evidence. In addition, craniofacial surgical reconstruction lacks a sufficient level of evidence to provide a sound basis for a full treatment protocol. Despite the rarity of the syndrome, more research is needed to compare outcomes of several surgical treatments, especially in orbitozygomatic/maxillary regions.
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Zhang D, Ighaniyan S, Stathopoulos L, Rollo B, Landman K, Hutson J, Newgreen D. The neural crest: a versatile organ system. ACTA ACUST UNITED AC 2014; 102:275-98. [PMID: 25227568 DOI: 10.1002/bdrc.21081] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 08/26/2014] [Indexed: 02/02/2023]
Abstract
The neural crest is the name given to the strip of cells at the junction between neural and epidermal ectoderm in neurula-stage vertebrate embryos, which is later brought to the dorsal neural tube as the neural folds elevate. The neural crest is a heterogeneous and multipotent progenitor cell population whose cells undergo EMT then extensively and accurately migrate throughout the embryo. Neural crest cells contribute to nearly every organ system in the body, with derivatives of neuronal, glial, neuroendocrine, pigment, and also mesodermal lineages. This breadth of developmental capacity has led to the neural crest being termed the fourth germ layer. The neural crest has occupied a prominent place in developmental biology, due to its exaggerated migratory morphogenesis and its remarkably wide developmental potential. As such, neural crest cells have become an attractive model for developmental biologists for studying these processes. Problems in neural crest development cause a number of human syndromes and birth defects known collectively as neurocristopathies; these include Treacher Collins syndrome, Hirschsprung disease, and 22q11.2 deletion syndromes. Tumors in the neural crest lineage are also of clinical importance, including the aggressive melanoma and neuroblastoma types. These clinical aspects have drawn attention to the selection or creation of neural crest progenitor cells, particularly of human origin, for studying pathologies of the neural crest at the cellular level, and also for possible cell therapeutics. The versatility of the neural crest lends itself to interlinked research, spanning basic developmental biology, birth defect research, oncology, and stem/progenitor cell biology and therapy.
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Abstract
Treacher Collins syndrome is a genetic disorder resulting in congenital craniofacial malformation. Patients typically present with downslanting palpebral fissures, lower eyelid colobomas, microtia, and malar and mandibular hypoplasia. This autosomal dominant disorder has a variable degree of phenotypic expression, and patients have no associated developmental delay or neurologic disease. Care for these patients requires a multidisciplinary team from birth through adulthood. Proper planning, counseling and surgical techniques are essential for optimizing patient outcomes. Here the authors review the features, genetics, and treatment of Treacher Collins syndrome.
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Affiliation(s)
- Christopher C Chang
- Section of Plastic Surgery, Yale University School of Medicine, New Haven, Connecticut
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Plomp RG, Versnel SL, van Lieshout MJS, Poublon RML, Mathijssen IMJ. Long-term assessment of facial features and functions needing more attention in treatment of Treacher Collins syndrome. J Plast Reconstr Aesthet Surg 2013; 66:e217-26. [PMID: 23615184 DOI: 10.1016/j.bjps.2013.03.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/19/2013] [Accepted: 03/16/2013] [Indexed: 11/28/2022]
Abstract
AIM This study aimed to determine which facial features and functions need more attention during surgical treatment of Treacher Collins syndrome (TCS) in the long term. METHOD A cross-sectional cohort study was conducted to compare 23 TCS patients with 206 controls (all≥18 years) regarding satisfaction with their face. The adjusted Body Cathexis Scale was used to determine satisfaction with the appearance of the different facial features and functions. Desire for further treatment of these items was questioned. For each patient an overview was made of all facial operations performed, the affected facial features and the objective severity of the facial deformities. RESULTS Patients were least satisfied with the appearance of the ears, facial profile and eyelids and with the functions hearing and nasal patency (P<0.001). Residual deformity of the reconstructed facial areas remained a problem in mainly the orbital area. The desire for further treatment and dissatisfaction was high in the operated patients, predominantly for eyelid reconstructions. Another significant wish was for improvement of hearing. CONCLUSION In patients with TCS, functional deficits of the face are shown to be as important as the facial appearance. Particularly nasal patency and hearing are frequently impaired and require routine screening and treatment from intake onwards. Furthermore, correction of ear deformities and midface hypoplasia should be offered and performed more frequently. Residual deformity and dissatisfaction remains a problem, especially in reconstructed eyelids. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Raul G Plomp
- Department of Plastic, Reconstructive and Hand Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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Mehrotra D, Hasan M, Pandey R, Kumar S. Clinical spectrum of Treacher Collins syndrome. J Oral Biol Craniofac Res 2011; 1:36-40. [PMID: 25756016 PMCID: PMC3942135 DOI: 10.1016/s2212-4268(11)60009-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
Treacher Collins syndrome (TCS) is the most common of the human mandibulofacial dysostosis disorders. It is an autosomal-dominant disorder of the craniofacial development occurring between the fifth and the eighth weeks of embryonic development with an incidence of 1/50,000 live births, range between 1-40,000 and 1-70,000. We present here the various clinical, radiographical and other diagnostic findings of the TCS to correlate the clinical assessment with the diagnostic imaging and review the various investigations and management options being carried out to improve their facial deformity.
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Affiliation(s)
- Divya Mehrotra
- Professor, Department of Anatomy, Chhatrapati Shahuji Maharaj Medical University (Erstwhile King George Medical College), Lucknow, India
| | - Mahdi Hasan
- Professor Emeritus, Department of Anatomy, Chhatrapati Shahuji Maharaj Medical University (Erstwhile King George Medical College), Lucknow, India
| | - Rahul Pandey
- Research Associate, Department of Oral and Maxillofacial Surgery, Chhatrapati Shahuji Maharaj Medical University (Erstwhile King George Medical College), Lucknow, India
| | - Sumit Kumar
- Research Associate, Department of Oral and Maxillofacial Surgery, Chhatrapati Shahuji Maharaj Medical University (Erstwhile King George Medical College), Lucknow, India
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Abstract
Treacher Collins syndrome (TCS) is a rare autosomal dominant disorder of craniofacial development. It is a congenital malformation of first and second branchial arch which may affect the size and shape of the ears, eyelids, cheek bones, and jaws. The extent of facial deformity varies from one affected individual to another. A case of 20-year-old boy having TCS is briefly described in this article.
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Affiliation(s)
- Prachi Shete
- Departments of Oral Pathology and Microbiology, Government Dental College and Hospital, Mumbai, India
| | - JV Tupkari
- Department of Oral Pathology, Government Dental College and Hospital, Mumbai, India
| | - Tabita Benjamin
- Department of Oral Pathology, Government Dental College and Hospital, Mumbai, India
| | - Aarti Singh
- Departments of Oral Medicine and Radiology, Government Dental College and Hospital, Mumbai, India
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Skeletal and Connective Tissue Disorders with Anterior Segment Manifestations. Cornea 2011. [DOI: 10.1016/b978-0-323-06387-6.00067-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Non-syndromic supernumerary caruncles causing ocular irritation after cataract surgery: a critical review of caruncular dysgeneses. Am J Ophthalmol 2010; 149:398-404.e1-2. [PMID: 20172067 DOI: 10.1016/j.ajo.2009.09.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Revised: 09/30/2009] [Accepted: 09/30/2009] [Indexed: 11/24/2022]
Abstract
PURPOSE To describe a patient with 2 ipsilateral supernumerary caruncles and to determine if they are predictive of associated abnormalities. DESIGN Retrospective and interventional clinicopathologic study with a critical review of the literature over the past 100 years. METHODS Assessment of clinical features and histopathologic findings in paraffin-embedded tissue sections stained with hematoxylin and eosin, Masson trichrome, periodic acid-Schiff (PAS) reaction with and without diastase, and Ziehl-Neelsen method. RESULTS Two placoid lesions causing ocular irritation after routine phacoemulsification were discovered in the inferomedial palpebral conjunctiva. They were totally separate from a normal caruncle. Their surface was studded with yellowish micronodules with projecting white vellus hairs. There were no associated local ophthalmic or systemic abnormalities. Microscopically, they were covered by a goblet cell-rich, nonkeratinizing squamous epithelium with subadjacent pilosebaceous units, the hairs of which were highlighted by the Masson trichrome and Ziehl-Neelsen stains, and small lobules of lacrimal gland tissue. The ocular irritation has not returned after surgery. CONCLUSIONS A literature review confirms that supernumerary (extra) caruncles coexisting with a normal caruncle are always unilateral and unassociated with any other ocular anomalies, as in the current case. They may, however, cause ocular irritation. They must be distinguished from ectopic (topographically displaced) or dysplastic caruncles that are generally bilateral and often associated with ocular adnexal abnormalities or Goldenhar syndrome. Ectopic or dysplastic caruncles, but not supernumerary ones, are characteristically accompanied by plical abnormalities or its absence. Well-documented supernumerary and ectopic caruncles have always been located in the inferior palpebral conjunctiva.
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Korn BS, Kikkawa DO, Cohen SR, Hartstein M, Annunziata CC. Treatment of Lower Eyelid Malposition with Dermis Fat Grafting. Ophthalmology 2008; 115:744-751.e2. [DOI: 10.1016/j.ophtha.2007.06.039] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2007] [Revised: 06/22/2007] [Accepted: 06/26/2007] [Indexed: 11/29/2022] Open
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Prenner JL, Binenbaum G, Carpentieri DF, Goldstein SM, Douglas RS, Ruchelli E, Katowitz JA, Hertle RW. Treacher Collins syndrome with novel ophthalmic findings and visceral anomalies. Br J Ophthalmol 2002; 86:472-3. [PMID: 11914220 PMCID: PMC1771072 DOI: 10.1136/bjo.86.4.472] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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