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Terhune E, Heyn P, Piper C, Wethey C, Monley A, Cuevas M, Hadley Miller N. Association between genetic polymorphisms and risk of adolescent idiopathic scoliosis in case-control studies: a systematic review. J Med Genet 2024; 61:196-206. [PMID: 37696603 DOI: 10.1136/jmg-2022-108993] [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: 10/17/2022] [Accepted: 07/09/2023] [Indexed: 09/13/2023]
Abstract
BACKGROUND Adolescent idiopathic scoliosis (AIS) is a structural lateral spinal curvature of ≥10° with rotation. Approximately 2%-3% of children across populations are affected with AIS, and this condition is responsible for ~$3 billion in costs within the USA. Although AIS is believed to have a strong genetic contribution, clinical translation of identified genetic variants has stalled. METHODS The databases MEDLINE (via PubMed), Embase, Google Scholar and Ovid MEDLINE were searched and limited to articles in English. Title and abstract, full-text and data extraction screening was conducted through Covidence, followed by data transfer to a custom REDCap database. Studies containing variant-level data using genome-wide methodology as well as validation studies of genome-wide methods were considered. Quality assessment was conducted using Q-Genie. RESULTS 33 studies were included, including 9 genome-wide association studies, 4 whole exome sequencing and 20 validation studies. Combined, these studies included data from >35,000 cases and >67,000 controls, not including validation cohorts. Additionally, results from six meta-analyses containing novel cohorts were also reported. All included study cohorts were from populations of primarily East Asian or Caucasian descent. Quality assessment found that overall study quality was high and control group selection was moderate. The highest number of reported associations were in single nucleotide polymorphisms (SNPs) in or near LBX1, LBX1-AS1, GPR126/ADGRG6 or BNC2. CONCLUSION AIS risk may be influenced by specific SNPs, particularly those in/near LBX1 and GPR126. Translatability of study findings is unknown due to an underrepresentation of most ethnic groups as well as few identified genome-wide studies. Further studies may benefit from increased cohort diversity and thorough evaluation of control cohort groups.
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Affiliation(s)
- Elizabeth Terhune
- Department of Orthopedics, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Patricia Heyn
- Department of Orthopedics, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Christi Piper
- Department of Orthopedics, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Cambria Wethey
- Department of Orthopedics, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Anna Monley
- Department of Orthopedics, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Melissa Cuevas
- Department of Orthopedics, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Nancy Hadley Miller
- Department of Orthopedics, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado, USA
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Roggio F, Trovato B, Sortino M, Onesta MP, Petrigna L, Musumeci G. The Role of Muscle Biomarkers in Adolescent Idiopathic Scoliosis. J Clin Med 2023; 12:7616. [PMID: 38137689 PMCID: PMC10743897 DOI: 10.3390/jcm12247616] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/05/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is the predominant orthopedic disorder in children, affecting 1-3% of the global population. Research in this field has tried to delineate the genetic factors behind scoliosis and its association with heredity since AIS is considered a polygenic disease and has different genetic and epigenetic factors. The current study conducted a narrative review of the literature, focusing on biomarkers in the pathophysiology of muscle in AIS patients. Articles were collected from Scopus, Pubmed, and Web of Science. The key screening parameters were scoliosis classification, sampling, and the biomarkers evaluated. This review emphasizes potential key mechanisms and molecular regulators in muscle tissue. While there has been limited focus on the proteins contributing to muscle changes in AIS, significant attention has been given to genomic studies of single-nucleotide polymorphisms, particularly in LBX1. Despite these efforts, the exact causes of AIS remain elusive, with several theories suggesting genetic and hormonal factors. This review identified critical protein biomarkers such as Gi-protein alpha subunits, fibrillin-1 and -2, and various differentially expressed proteins, which may be linked to muscle alterations in AIS. This field of research is still limited due to a lack of homogeneity in the distinction of patients by groups and curve severity. Although the pathophysiology of AIS is still unclear, molecular research is important to guide the treatment of AIS before achieving skeletal maturity, thus avoiding serious problems associated with posture changes and low quality of life. In the future, a more comprehensive synergy between orthopedic and molecular research might ameliorate the diagnosis and treatment of AIS patients.
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Affiliation(s)
- Federico Roggio
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, Via S. Sofia n 97, 95123 Catania, Italy; (F.R.); (B.T.); (M.S.); (L.P.)
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Via Giovanni Pascoli 6, 90144 Palermo, Italy
| | - Bruno Trovato
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, Via S. Sofia n 97, 95123 Catania, Italy; (F.R.); (B.T.); (M.S.); (L.P.)
| | - Martina Sortino
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, Via S. Sofia n 97, 95123 Catania, Italy; (F.R.); (B.T.); (M.S.); (L.P.)
| | | | - Luca Petrigna
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, Via S. Sofia n 97, 95123 Catania, Italy; (F.R.); (B.T.); (M.S.); (L.P.)
| | - Giuseppe Musumeci
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, Via S. Sofia n 97, 95123 Catania, Italy; (F.R.); (B.T.); (M.S.); (L.P.)
- Research Center on Motor Activities (CRAM), University of Catania, Via S. Sofia n 97, 95123 Catania, Italy
- Department of Biology, Sbarro Institute for Cancer Research and Molecular Medicine, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
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Ru L, Zheng H, Lian W, Zhao S, Fan Q. Knowledge mapping of idiopathic scoliosis genes and research hotspots (2002-2022): a bibliometric analysis. Front Pediatr 2023; 11:1177983. [PMID: 38111628 PMCID: PMC10725947 DOI: 10.3389/fped.2023.1177983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 11/06/2023] [Indexed: 12/20/2023] Open
Abstract
Background The etiology of idiopathic scoliosis (IS) remains unclear. Gene-based studies on genetic etiology and molecular mechanisms have improved our understanding of IS and guided treatment and diagnosis. Therefore, it is imperative to explicate and demarcate the preponderant areas of inquiry, key scholars, and their aggregate scholarly output, in addition to the collaborative associations amongst publications or researchers. Methods Documents were retrieved from the Web of Science Core Collection (WoSCC) with the following criteria: TS = ("idiopathic scoliosis" AND gene) refined by search operators (genomic OR "hereditary substance" OR "germ plasm" OR Cistrons OR genetics OR genetic OR genes OR Polygenic OR genotype OR genome OR allele OR polygenes OR Polygene) AND DOCUMENT TYPES (ARTICLE OR REVIEW), and the timespan of 2002-01-01 to 2022-11-26. The online bibliometric analysis platform (bibliometric), bibliographic item co-occurrence matrix builder (BICOMB), CiteSpace 6.1. R6 and VOS viewer were used to evaluate articles for publications, nations, institutions, journals, references, knowledge bases, keywords, and research hotspots. Results A total of 479 documents were retrieved from WoSCC. Fourty-four countries published relevant articles. The country with the most significant number of articles was China, and the institution with the most significant number of articles was Nanjing University. Citation analysis formed eight meaningful clusters and 16 high-frequency keywords. (2) The citation knowledge map included single nucleotide polymorphisms, whole exome sequencing, axonal dynamin, drug development, mesenchymal stem cells, dietary intake, curve progression, zebrafish development model, extracellular matrix, and rare variants were the current research hotspots and frontiers. Conclusions Recent research has focused on IS-related genes, whereas the extracellular matrix and unusual variants are research frontiers and hotspots. Functional analysis of susceptibility genes will prove to be valuable for identifying this disease.
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Affiliation(s)
- Like Ru
- School of Pediatrics, Henan University of Chinese Medicine, Zhengzhou, China
| | - Hong Zheng
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- School of Pediatrics, Henan University of Chinese Medicine, Zhengzhou, China
| | - Wenjun Lian
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Shuying Zhao
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Qimeng Fan
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
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4
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Lau KKL, Law KKP, Kwan KYH, Cheung JPY, Cheung KMC. Proprioception-related gene mutations in relation to the aetiopathogenesis of idiopathic scoliosis: A scoping review. J Orthop Res 2023; 41:2694-2702. [PMID: 37203456 DOI: 10.1002/jor.25626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 05/20/2023]
Abstract
Since idiopathic scoliosis is a multifactorial disorder, the proprioceptive defect is considered one of its etiological factors. Genetic studies have separately revealed this relationship, yet it remains indeterminate which specific genes that related to proprioception contributed to the initiation, progression, pathology, and treatment outcomes of the curvature. A systematic search was conducted on four online databases, including PubMed, Web of Science, Embase, and Academic search complete. Studies were included if they involved human or animal subjects with idiopathic scoliosis and evaluated with proprioceptive genes. The search period was the inception of the database to February 21, 2023. Four genes (i.e., Ladybird homeobox 1 [LBX1], Piezo type mechanosensitive ion channel component 2 [PIEZO2], Runx family transcription factor 3 [RUNX3], and neurotrophin 3 [NTF3]) investigated in 19 studies were included. LBX1 has confirmed the correlation with the development of idiopathic scoliosis in 10 ethnicities, whereas PIEZO2 has shown a connection with clinical proprioceptive tests in subjects with idiopathic scoliosis. However, curve severity was less likely to be related to the proprioceptive genes. The potential pathology took place at the proprioceptive neurons. Evidence of proprioception-related gene mutations in association with idiopathic scoliosis was established. Nevertheless, the causation between the initiation, progression, and treatment outcomes with proprioceptive defect requires further investigation.
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Affiliation(s)
- Kenney K L Lau
- Department of Orthopaedics and Traumatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Karlen K P Law
- Department of Orthopaedics and Traumatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Kenny Y H Kwan
- Department of Orthopaedics and Traumatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Jason P Y Cheung
- Department of Orthopaedics and Traumatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
- Department of Orthopaedics and Traumatology, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Kenneth M C Cheung
- Department of Orthopaedics and Traumatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
- Department of Orthopaedics and Traumatology, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
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AlMekkawi AK, Caruso JP, El Ahmadieh TY, Palmisciano P, Aljardali MW, Derian AG, Al Tamimi M, Bagley CA, Aoun SG. Single Nucleotide Polymorphisms and Adolescent Idiopathic Scoliosis: A Systematic Review and Meta-Analysis of the Literature. Spine (Phila Pa 1976) 2023; 48:695-701. [PMID: 36940245 DOI: 10.1097/brs.0000000000004623] [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: 11/17/2022] [Accepted: 02/25/2023] [Indexed: 03/22/2023]
Abstract
STUDY DESIGN Meta-analysis. OBJECTIVE To determine the single nucleotide polymorphisms (SNPs) that are related to adult idiopathic scoliosis. SUMMARY AND BACKGROUND DATA Adolescent idiopathic scoliosis (AIS) is considered one of the most prevalent spinal diseases. Even though the cause of AIS is yet to be determined, family history and sex have shown conclusive associations. Multiple studies have indicated that AIS is more prevalent in families where at least one other first-degree relative is similarly affected, indicating a possible genetic etiology to AIS. MATERIALS AND METHODS Articles were collected from 3 different search engines and then processed in 2 stages for final article selection for quantitative analysis. Five different genetic models were represented to show the association between the different SNPs and AIS. The Hardy-Weinberg equilibrium was examined using Fisher exact test, with significance set at P <0.05. The final analysis paper's quality was evaluated using the Newcastle Ottawa Scale. Kappa interrater agreement was calculated to evaluate the agreement between authors. RESULTS The final analysis comprised 43 publications, 19412 cases, 22005 controls, and 25 distinct genes. LBX1 rs11190870 T>C and MATN-1 SNPs were associated with an increased risk of AIS in one or all of the 5 genetic models. IGF-1 , estrogen receptor alfa, and MTNR1B , SNPs were not associated with AIS in all 5 genetic models. Newcastle Ottawa Scale showed good quality for the selected articles. Cohen k = 0.741 and Kappa interrater agreement of 84% showed that the writers were in strong agreement. CONCLUSIONS There seem to be associations between AIS and genetic SNP. Further larger studies should be conducted to validate the results.
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Affiliation(s)
- Ahmad K AlMekkawi
- Department of Neurosurgery, The University of Texas Southwestern, Dallas, TX
| | - James P Caruso
- Department of Neurosurgery, The University of Texas Southwestern, Dallas, TX
| | - Tarek Y El Ahmadieh
- Department of Neurosurgery, Loma Linda University, Anderson St., Loma Linda, CA
| | - Paolo Palmisciano
- Department of Neurosurgery, University of Cincinnati, Cincinnati, OH
| | - Marwa W Aljardali
- The LAU Gilbert and Rose-Marie Chagoury School of Medicine; Beirut, Lebanon
| | | | - Mazin Al Tamimi
- Department of Neurosurgery, The University of Texas Southwestern, Dallas, TX
| | - Carlos A Bagley
- Department of Neurosurgery, The University of Texas Southwestern, Dallas, TX
| | - Salah G Aoun
- Department of Neurosurgery, The University of Texas Southwestern, Dallas, TX
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Matsuhashi Y, Horiuchi K, Nakagawa T, Takahashi Y, Imabayashi H, Hosogane N, Watanabe K, Matsumoto M, Chiba K. Abrogation of LBX1 in skeletal muscle results in hypoplastic limbs and progressive kyphosis in mice. J Orthop Res 2023; 41:884-890. [PMID: 35856296 DOI: 10.1002/jor.25417] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/13/2022] [Accepted: 07/16/2022] [Indexed: 02/04/2023]
Abstract
LBX1 is a gene located near a single-nucleotide polymorphism, rs11190870, which is highly associated with susceptibility to adolescent idiopathic scoliosis. However, the potential involvement of LBX1 in the etiology of this spinal deformity has not been elucidated. In this study, we aimed to determine whether the lack of LBX1 in skeletal muscle results in spinal deformities in mice. We generated mutant mice in which the Lbx1 allele was conditionally excised under the control of a human muscle actin promoter. Mice lacking LBX1 from the skeletal muscle were fertile and available. The mutant mice had hypoplastic forelimbs and weighed less than control animals, but otherwise, there were no overt anomalies. The mice did not exhibit a scoliosis-like spinal deformity; however, they developed moderate kyphosis as they grew old. These observations indicated that LBX1 is involved in limb development and potentially in the maintenance of spinal curvature/alignment in mice.
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Affiliation(s)
- Yusuke Matsuhashi
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Keisuke Horiuchi
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Takahiro Nakagawa
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Yohei Takahashi
- Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Hideaki Imabayashi
- Department of Orthopedic Surgery, Saiseikai Central Hospital, Tokyo, Japan
| | - Naobumi Hosogane
- Department of Orthopedic Surgery, Kyorin University, Mitaka, Tokyo, Japan
| | - Kota Watanabe
- Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Morio Matsumoto
- Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Kazuhiro Chiba
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
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7
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Terhune EA, Monley AM, Cuevas MT, Wethey CI, Gray RS, Hadley-Miller N. Genetic animal modeling for idiopathic scoliosis research: history and considerations. Spine Deform 2022; 10:1003-1016. [PMID: 35430722 DOI: 10.1007/s43390-022-00488-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 02/19/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Idiopathic scoliosis (IS) is defined as a structural lateral spinal curvature ≥ 10° in otherwise healthy children and is the most common pediatric spinal deformity. IS is known to have a strong genetic component; however, the underlying etiology is still largely unknown. Animal models have been used historically to both understand and develop treatments for human disease, including within the context of IS. This intended audience for this review is clinicians in the fields of musculoskeletal surgery and research. METHODS In this review article, we synthesize current literature of genetic animal models of IS and introduce considerations for researchers. RESULTS Due to complex genetic and unique biomechanical factors (i.e., bipedalism) hypothesized to contribute to IS in humans, scoliosis is a difficult condition to replicate in model organisms. CONCLUSION We advocate careful selection of animal models based on the scientific question and introduce gaps and limitations in the current literature. We advocate future research efforts to include animal models with multiple characterized genetic or environmental perturbations to reflect current understanding of the human condition.
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Affiliation(s)
- Elizabeth A Terhune
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave., P18-3105, MS 8343, Aurora, CO, 80045, USA
| | - Anna M Monley
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave., P18-3105, MS 8343, Aurora, CO, 80045, USA.,Musculoskeletal Research Center, Children's Hospital Colorado, Aurora, CO, 80045, USA
| | - Melissa T Cuevas
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave., P18-3105, MS 8343, Aurora, CO, 80045, USA
| | - Cambria I Wethey
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave., P18-3105, MS 8343, Aurora, CO, 80045, USA
| | - Ryan S Gray
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Nancy Hadley-Miller
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave., P18-3105, MS 8343, Aurora, CO, 80045, USA. .,Musculoskeletal Research Center, Children's Hospital Colorado, Aurora, CO, 80045, USA.
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Chen H, Yang KG, Zhang J, Cheuk KY, Nepotchatykh E, Wang Y, Hung ALH, Lam TP, Moreau A, Lee WYW. Upregulation of microRNA-96-5p is associated with adolescent idiopathic scoliosis and low bone mass phenotype. Sci Rep 2022; 12:9705. [PMID: 35690607 PMCID: PMC9188568 DOI: 10.1038/s41598-022-12938-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 05/18/2022] [Indexed: 11/10/2022] Open
Abstract
Bone densitometry revealed low bone mass in patients with adolescent idiopathic scoliosis (AIS) and its prognostic potential to predict curve progression. Recent studies showed differential circulating miRNAs in AIS but their diagnostic potential and links to low bone mass have not been well-documented. The present study aimed to compare miRNA profiles in bone tissues collected from AIS and non-scoliotic subjects, and to explore if the selected miRNA candidates could be useful diagnostic biomarkers for AIS. Microarray analysis identified miR-96-5p being the most upregulated among the candidates. miR-96-5p level was measured in plasma samples from 100 AIS and 52 healthy girls. Our results showed significantly higher plasma levels of miR-96-5p in AIS girls with an area under the curve (AUC) of 0.671 for diagnostic accuracy. A model that was composed of plasma miR-96-5p and patient-specific parameters (age, body weight and years since menarche) gave rise to an improved AUC of 0.752. Ingenuity Pathway Analysis (IPA) indicated functional links between bone metabolic pathways and miR-96-5p. In conclusion, differentially expressed miRNAs in AIS bone and plasma samples represented a new source of disease biomarkers and players in AIS etiopathogenesis, which required further validation study involving AIS patients of both genders with long-term follow-up.
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Affiliation(s)
- Huanxiong Chen
- Department of Spine Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China.,Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kenneth Guangpu Yang
- Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jiajun Zhang
- Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ka-Yee Cheuk
- Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Evguenia Nepotchatykh
- Viscogliosi Laboratory in Molecular Genetics of Musculoskeletal Diseases, Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | - Yujia Wang
- Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Alec Lik-Hang Hung
- Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Tsz-Ping Lam
- Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Alain Moreau
- Viscogliosi Laboratory in Molecular Genetics of Musculoskeletal Diseases, Sainte-Justine University Hospital Research Center, Montreal, QC, Canada. .,Department of Stomatology, Faculty of Dentistry, Université de Montréal, Montreal, QC, Canada. .,Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada.
| | - Wayne Yuk-Wai Lee
- Department of Orthopaedics and Traumatology, SH Ho Scoliosis Research Laboratory, Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China. .,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.
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9
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Terhune EA, Heyn PC, Piper CR, Hadley-Miller N. Genetic variants associated with the occurrence and progression of adolescent idiopathic scoliosis: a systematic review protocol. Syst Rev 2022; 11:118. [PMID: 35681176 PMCID: PMC9178937 DOI: 10.1186/s13643-022-01991-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 05/27/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Adolescent idiopathic scoliosis (AIS) is a structural lateral spinal curvature of ≥ 10° with rotation. Approximately 2-3% of children in most populations are affected with AIS, and this condition is responsible for approximately $1.1 billion in surgical costs to the US healthcare system. Although a genetic factor for AIS has been demonstrated for decades, with multiple potentially contributory loci identified across populations, treatment options have remained limited to bracing and surgery. METHODS The databases MEDLINE (via PubMed), Embase, Google Scholar, and Ovid MEDLINE will be searched and limited to articles in English. We will conduct title and abstract, full-text, and data extraction screening through Covidence, followed by data transfer to a custom REDCap database. Quality assessment will be confirmed by multiple reviewers. Studies containing variant-level data (i.e., GWAS, exome sequencing) for AIS subjects and controls will be considered. Outcomes of interest will include presence/absence of AIS, scoliosis curve severity, scoliosis curve progression, and presence/absence of nucleotide-level variants. Analyses will include odds ratios and relative risk assessments, and subgroup analysis (i.e., males vs. females, age groups) may be applied. Quality assessment tools will include GRADE and Q-Genie for genetic studies. DISCUSSION In this systematic review, we seek to evaluate the quality of genetic evidence for AIS to better inform research efforts, to ultimately improve the quality of patient care and diagnosis. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration #CRD42021243253.
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Affiliation(s)
- Elizabeth A. Terhune
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Patricia C. Heyn
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO USA
- Center for Gait and Movement Analysis, Children’s Hospital Colorado, Aurora, CO USA
- Cochrane US University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Christi R. Piper
- Strauss Health Sciences Library, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Nancy Hadley-Miller
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO USA
- Musculoskeletal Research Center, Children’s Hospital Colorado, Aurora, CO USA
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Severity of Idiopathic Scoliosis Is Associated with Differential Methylation: An Epigenome-Wide Association Study of Monozygotic Twins with Idiopathic Scoliosis. Genes (Basel) 2021; 12:genes12081191. [PMID: 34440365 PMCID: PMC8391702 DOI: 10.3390/genes12081191] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 12/27/2022] Open
Abstract
Epigenetic mechanisms may contribute to idiopathic scoliosis (IS). We identified 8 monozygotic twin pairs with IS, 6 discordant (Cobb angle difference > 10°) and 2 concordant (Cobb angle difference ≤ 2°). Genome-wide methylation in blood was measured with the Infinium HumanMethylation EPIC Beadchip. We tested for differences in methylation and methylation variability between discordant twins and tested the association between methylation and curve severity in all twins. Differentially methylated region (DMR) analyses identified gene promoter regions. Methylation at cg12959265 (chr. 7 DPY19L1) was less variable in cases (false discovery rate (FDR) = 0.0791). We identified four probes (false discovery rate, FDR < 0.10); cg02477677 (chr. 17, RARA gene), cg12922161 (chr. 2 LOC150622 gene), cg08826461 (chr. 2), and cg16382077 (chr. 7) associated with curve severity. We identified 57 DMRs where hyper- or hypo-methylation was consistent across the region and 28 DMRs with a consistent association with curve severity. Among DMRs, 21 were correlated with bone methylation. Prioritization of regions based on methylation concordance in bone identified promoter regions for WNT10A (WNT signaling), NPY (regulator of bone and energy homeostasis), and others predicted to be relevant for bone formation/remodeling. These regions may aid in understanding the complex interplay between genetics, environment, and IS.
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Whole Exome Sequencing of 23 Multigeneration Idiopathic Scoliosis Families Reveals Enrichments in Cytoskeletal Variants, Suggests Highly Polygenic Disease. Genes (Basel) 2021; 12:genes12060922. [PMID: 34208743 PMCID: PMC8235452 DOI: 10.3390/genes12060922] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/04/2021] [Accepted: 06/10/2021] [Indexed: 12/26/2022] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is a lateral spinal curvature >10° with rotation that affects 2–3% of healthy children across populations. AIS is known to have a significant genetic component, and despite a handful of risk loci identified in unrelated individuals by GWAS and next-generation sequencing methods, the underlying etiology of the condition remains largely unknown. In this study, we performed exome sequencing of affected individuals within 23 multigenerational families, with the hypothesis that the occurrence of rare, low frequency, disease-causing variants will co-occur in distantly related, affected individuals. Bioinformatic filtering of uncommon, potentially damaging variants shared by all sequenced family members revealed 1448 variants in 1160 genes across the 23 families, with 132 genes shared by two or more families. Ten genes were shared by >4 families, and no genes were shared by all. Gene enrichment analysis showed an enrichment of variants in cytoskeletal and extracellular matrix related processes. These data support a model that AIS is a highly polygenic disease, with few variant-containing genes shared between affected individuals across different family lineages. This work presents a novel resource for further exploration in familial AIS genetic research.
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Luo M, Zhang Y, Huang S, Song Y. The Susceptibility and Potential Functions of the LBX1 Gene in Adolescent Idiopathic Scoliosis. Front Genet 2021; 11:614984. [PMID: 33537061 PMCID: PMC7848184 DOI: 10.3389/fgene.2020.614984] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 12/21/2020] [Indexed: 02/05/2023] Open
Abstract
Genome-wide association studies have identified many susceptibility genes for adolescent idiopathic scoliosis (AIS). However, most of the results are hard to be replicated in multi-ethnic populations. LBX1 is the most promising candidate gene in the etiology of AIS. We aimed to appraise the literature for the association of LBX1 gene polymorphisms with susceptibility and curve progression in AIS. We also reviewed the function of the LBX1 gene in muscle progenitor cell migration and neuronal determination processes. Three susceptibility loci (rs11190870, rs625039, and rs11598564) near the LBX1 gene, as well as another susceptibility locus (rs678741), related to LBX1 regulation, have been successfully verified to have robust associations with AIS in multi-ethnic populations. The LBX1 gene plays an essential role in regulating the migration and proliferation of muscle precursor cells, and it is known to play a role in neuronal determination processes, especially for the fate of somatosensory relay neurons. The LBX1 gene is the most promising candidate gene in AIS susceptibility due to its position and possible functions in muscle progenitor cell migration and neuronal determination processes. The causality between susceptibility loci related to the LBX1 gene and the pathogenesis of AIS deserves to be explored with further integrated genome-wide and epigenome-wide association studies.
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Affiliation(s)
- Ming Luo
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Yuxiao Zhang
- West China Hospital and West China School of Medicine, Sichuan University, Chengdu, China
| | - Shishu Huang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Yueming Song
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
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13
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Pérez-Machado G, Berenguer-Pascual E, Bovea-Marco M, Rubio-Belmar PA, García-López E, Garzón MJ, Mena-Mollá S, Pallardó FV, Bas T, Viña JR, García-Giménez JL. From genetics to epigenetics to unravel the etiology of adolescent idiopathic scoliosis. Bone 2020; 140:115563. [PMID: 32768685 DOI: 10.1016/j.bone.2020.115563] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 12/11/2022]
Abstract
Scoliosis is defined as the three-dimensional (3D) structural deformity of the spine with a radiological lateral Cobb angle (a measure of spinal curvature) of ≥10° that can be caused by congenital, developmental or degenerative problems. However, those cases whose etiology is still unknown, and affect healthy children and adolescents during growth, are the commonest form of spinal deformity, known as adolescent idiopathic scoliosis (AIS). In AIS management, early diagnosis and the accurate prediction of curve progression are most important because they can decrease negative long-term effects of AIS treatment, such as unnecessary bracing, frequent exposure to radiation, as well as saving the high costs of AIS treatment. Despite efforts made to identify a method or technique capable of predicting AIS progression, this challenge still remains unresolved. Genetics and epigenetics, and the application of machine learning and artificial intelligence technologies, open up new avenues to not only clarify AIS etiology, but to also identify potential biomarkers that can substantially improve the clinical management of these patients. This review presents the most relevant biomarkers to help explain the etiopathogenesis of AIS and provide new potential biomarkers to be validated in large clinical trials so they can be finally implemented into clinical settings.
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Affiliation(s)
| | | | | | - Pedro Antonio Rubio-Belmar
- Institute for Health Research La Fe, IISLaFe, Valencia, Spain; Spine Surgery Unit, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Eva García-López
- EpiDisease S.L., University of Valencia. Scientific Park. Paterna, Valencia, Spain
| | - María José Garzón
- EpiDisease S.L., University of Valencia. Scientific Park. Paterna, Valencia, Spain
| | - Salvador Mena-Mollá
- EpiDisease S.L., University of Valencia. Scientific Park. Paterna, Valencia, Spain; Department of Physiology, University of Valencia, Faculty of Medicine and Dentistry, Valencia, Spain
| | - Federico V Pallardó
- EpiDisease S.L., University of Valencia. Scientific Park. Paterna, Valencia, Spain; Department of Physiology, University of Valencia, Faculty of Medicine and Dentistry, Valencia, Spain; Consortium Center for Biomedical Network Research ISCIII. Instituto de Salud Carlos III, Valencia, Spain; INCLIVA Health Research Institute, Valencia, Spain
| | - Teresa Bas
- Institute for Health Research La Fe, IISLaFe, Valencia, Spain; Spine Surgery Unit, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Juan R Viña
- INCLIVA Health Research Institute, Valencia, Spain; Department of Biochemistry, University of Valencia, Faculty of Medicine and Dentistry, Valencia, Spain
| | - José Luis García-Giménez
- EpiDisease S.L., University of Valencia. Scientific Park. Paterna, Valencia, Spain; Department of Physiology, University of Valencia, Faculty of Medicine and Dentistry, Valencia, Spain; Consortium Center for Biomedical Network Research ISCIII. Instituto de Salud Carlos III, Valencia, Spain; INCLIVA Health Research Institute, Valencia, Spain.
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Jennings W, Hou M, Perterson D, Missiuna P, Thabane L, Tarnopolsky M, Samaan MC. Paraspinal muscle ladybird homeobox 1 (LBX1) in adolescent idiopathic scoliosis: a cross-sectional study. Spine J 2019; 19:1911-1916. [PMID: 31202838 DOI: 10.1016/j.spinee.2019.06.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Adolescent idiopathic scoliosis (AIS) is the leading cause of spinal deformity in adolescents globally. Recent evidence from genome-wide association studies has implicated variants in or near the ladybird homeobox 1 (LBX1) gene, encoding the ladybird homeobox 1 transcription factor, in AIS development. This gene plays a critical role in guiding embryonic neurogenesis and myogenesis and is vital in muscle mass determination. Despite the confirmation of the role for LBX1 gene variants in the development of AIS, the biological basis of LBX1 contribution to AIS remains mostly unknown. PURPOSE To investigate the potential role of LBX1 in driving spinal curving, curve laterality, and progression through muscle-based mechanisms in AIS patients by analyzing its gene and protein expression. STUDY DESIGN This is a cross-sectional study using clinical data and biological samples from the Immunometabolic CONnections to Scoliosis study (ICONS study). PATIENT SAMPLE Twenty-five patients with AIS provided informed consent. Paraspinal muscle biopsies from the maximal points of concavity and convexity for gene expression and protein analysis were obtained at the start of corrective spinal surgery. OUTCOME MEASURES The outcome measures included the detection of paraspinal muscle LBX1 mRNA abundance and LBX1 protein expression and the correlation of the latter with age, sex, and curve severity. METHODS The measurement of mRNA abundance was done using quantitative real-time polymerase chain reaction (qRT-PCR). Additionally, protein lysates from the biopsied muscle samples were probed with a monoclonal LBX1 antibody to compare the muscle protein levels on either side of the scoliotic curve by western blot. This study received funding from the Division of Orthopedics, Department of Surgery, McMaster University, Hamilton, Ontario, Canada ($39,900 CAN for 2 years). The authors have no conflicts of interest to disclose. RESULTS LBX1 mRNA abundance (concave 2.98±0.87, convex 3.40±1.10, p value 0.73) and protein expression (concave 1.20±0.13, convex 1.21±0.10, p value 0.43) were detected on both sides of the scoliotic curve at equivalent levels. The expression of LBX1 protein did not correlate with age (concave: correlation coefficient 0.32, p value 0.12; convex: correlation coefficient 0.08, p value 0.69), sex (concave: correlation coefficient -0.03, p value 0.08; convex: correlation coefficient 0.07, p value 0.72), or the severity of spinal curving measured using the Cobb angle (concave: correlation coefficient -0.16, p value 0.45; convex: correlation coefficient -0.08, p value 0.69). CONCLUSIONS LBX1 is expressed in erector spinae muscles, and its levels are equal in muscles on both sides of the scoliotic curve in AIS. The expression of LBX1 on the convex and concave sides of the scoliotic curve did not correlate with age, sex, or the severity of spinal curving. The molecular mechanisms by which LBX1contributes to the development and propagation of AIS need to be explored further in muscle and other tissues.
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Affiliation(s)
- William Jennings
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada; Division of Pediatric Endocrinology, McMaster Children's Hospital, Hamilton, Ontario, Canada
| | - Maggie Hou
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada; Division of Pediatric Endocrinology, McMaster Children's Hospital, Hamilton, Ontario, Canada
| | - Devin Perterson
- Division of Orthopedics, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Paul Missiuna
- Division of Orthopedics, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada; Department of Anesthesia, McMaster University, Hamilton, Ontario, Canada; Centre for Evaluation of Medicines, St. Joseph's Health Care, Hamilton, Ontario, Canada; Biostatistics Unit, St Joseph's Healthcare-Hamilton, Hamilton, Ontario, Canada
| | - Mark Tarnopolsky
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - M Constantine Samaan
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada; Division of Pediatric Endocrinology, McMaster Children's Hospital, Hamilton, Ontario, Canada; Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada.
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15
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Nikolova S, Dikova M, Dikov D, Djerov A, Savov A, Kremensky I, Loukanov A. Positive association between a polymorphic locus near the LBX1 gene and predisposition of idiopathic scoliosis in Southeastern European population. J Appl Biomed 2019; 17:184-189. [PMID: 34907700 DOI: 10.32725/jab.2019.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/19/2019] [Indexed: 11/05/2022] Open
Abstract
Idiopathic scoliosis (IS) is a common medical condition in children, characterized by three-dimensional spinal curve and strong evidence of genetic predisposition. The purpose of the present case-control study is to examine the association between the polymorphic variant rs11190870 (T/C), near the LBX1 gene, and IS predisposition in distinct subgroups based on age at onset, family history and gender. A total of 127 IS patients and 254 unrelated controls of Southeastern European descent were recruited. The genotyping was carried out by TaqMan real-time amplification technology. The results were analyzed by the Pearson's Chi-squared Test and the Fisher's Exact Test with a value of p less than 0.05 as statistically significant. The T allele and homozygous TT genotype were associated with a greater incidence of IS. Our results suggest that there is a genetic association with IS in adolescents, familial and non-familial cases, and in females. Larger case-control studies are necessary to examine the genetic factors of IS/AIS etiology in infants, juveniles and males. In conclusion, the molecular genetic identification of diagnostic and prognostic molecular markers would make an early treatment including minimally invasive procedures possible.
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Affiliation(s)
- Svetla Nikolova
- Sofia University, Lozenetz University Hospital, Laboratory of Medical Genetics and Molecular Biology, Sofia, Bulgaria.,Saitama University, Graduate School of Science and Engineering, Division of Strategic Research, Saitama, Japan
| | - Milka Dikova
- Medical University - Sofia, University Orthopedic Hospital "Prof. Boycho Boychev", Sofia, Bulgaria
| | - Dobrin Dikov
- Medical University - Sofia, University Orthopedic Hospital "Prof. Boycho Boychev", Sofia, Bulgaria
| | - Assen Djerov
- Medical University - Sofia, University Orthopedic Hospital "Prof. Boycho Boychev", Sofia, Bulgaria
| | - Alexey Savov
- Medical University - Sofia, University Hospital "Maichin Dom", National Genetic Laboratory, Sofia, Bulgaria
| | - Ivo Kremensky
- Medical University - Sofia, Molecular Medicine Center, Sofia, Bulgaria
| | - Alexandre Loukanov
- Saitama University, Graduate School of Science and Engineering, Division of Strategic Research, Saitama, Japan
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Jiang H, Yang Q, Liu Y, Guan Y, Zhan X, Xiao Z, Wei Q. Association between ladybird homeobox 1 gene polymorphisms and adolescent idiopathic scoliosis: A MOOSE-compliant meta-analysis. Medicine (Baltimore) 2019; 98:e16314. [PMID: 31277174 PMCID: PMC6635165 DOI: 10.1097/md.0000000000016314] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The Ladybird Homeobox 1 (LBX1) gene has been implicated in the etiology of adolescent idiopathic scoliosis (AIS). The association between LBX1 gene polymorphisms and AIS has been investigated in several studies. However, these findings have yield contradictory results rather than conclusive evidence.This study is to provide a meta-analysis of the published case-control studies on the association between LBX1 gene polymorphisms and AIS in Asian and Caucasian populations.This meta-analysis conformed to the Meta-Analysis of Observational Studies in Epidemiology (MOOSE) guidelines. We conducted a literature research on PubMed, Embase, Web of Science, and Cochrane Library until February 10, 2018. We included all case-control or cohort studies about association between LBX1 gene polymorphisms and AIS. The Risk Of Bias In Non-randomised Studies-of Interventions and Critical Appraisal Skills Programme were used to evaluate the risk of bias and study quality. We assessed the strength of association by pooled odds ratios (ORs) and 95% confidence intervals (CIs) in all genetic models under a fixed-effect model or random-effect model. We further performed subgroup analysis by ethnicity and sex. Sensitivity analysis and publication bias were also undertaken.A total of 10 studies (11,411 cases and 26,609 controls) were included in this meta-analysis. The pooled results showed a statistically significant association between LBX1 gene polymorphisms and AIS (for rs11190870, T vs C, OR = 1.54, 95% CI = 1.48-1.61, P < .00001; for rs625039, G vs A, OR = 1.50, 95% CI: 1.38-1.62; P < .00001; for rs678741, G vs A, OR = 0.74, 95% CI: 0.63-0.86; P < .0001; for rs11598564, G vs A, OR = 1.41, 95% CI: 1.31-1.51; P < .0001). For stratified analyses by ethnicity and sex, robust significant associations were detected in Asian and Caucasian populations, and in women and men under all genetic models.T allele of rs11190870 and G alleles of rs625039 and rs11598564 represent risk factors for AIS, but G allele of rs678741 may play a protective role in the occurrence of AIS. Further research is needed to confirm this finding and to understand its implications.
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Affiliation(s)
| | | | | | | | | | | | - Qingjun Wei
- Department of Orthopedics Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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17
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Replication Study for the Association of GWAS-associated Loci With Adolescent Idiopathic Scoliosis Susceptibility and Curve Progression in a Chinese Population. Spine (Phila Pa 1976) 2019; 44:464-471. [PMID: 30234802 DOI: 10.1097/brs.0000000000002866] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A genetic association (replication) study. OBJECTIVE The aim of this study was to replicate and further evaluate the association among seven genome-wide association studies (GWAS)-identified single nucleotide polymorphisms (SNPs) in Chinese girls with adolescent idiopathic scoliosis (AIS) with disease onset, curve types, and progression. SUMMARY OF BACKGROUND DATA AIS is the most common pediatric spinal deformity with a strong genetic predisposition. Recent GWAS identified 10 new disease predisposition loci for AIS. METHODS Three hundred nineteen female AIS patients with Cobb angle ≥ 10 and 201 healthy controls were studied for the association with disease onset. Seven GWAS-identified SNPs (rs11190870 in LBX1, rs12946942 in SOX9/KCNJ2, rs13398147 in PAX3/EPH4, rs241215 in AJAP1, rs3904778 in BNC2, rs6570507 in GPR126, and rs678741 in LBX1-AS1) were analyzed. In subgroup analysis, AIS patients were subdivided by curve types and disease progression to examine for genotype association. RESULTS We replicated the association with disease onset in four common SNPs rs11190870, rs3904778, rs6570507, and rs678741. In addition, rs1190870 and rs678741 remained significantly associated in the right thoracic curves only subgroup. However, no significant difference was observed with both clinical curve progression or Cobb angle. CONCLUSION This study replicated the associations of four GWAS-associated SNPs with occurrence of AIS in our Chinese population. However, none of these SNPs was associated with curve severity and progression. The results suggest that curve progression may be determined by environmental (nongenetic) factor, but further study with a larger sample size is required to address this issue. LEVEL OF EVIDENCE 4.
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18
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Liu G, Liu S, Li X, Chen J, Chen W, Zuo Y, Liu J, Niu Y, Lin M, Zhao S, Long B, Zhao Y, Ye Y, Zhang J, Shen J, Qiu G, Wu Z, Wu N. Genetic polymorphisms of PAX1 are functionally associated with different PUMC types of adolescent idiopathic scoliosis in a northern Chinese Han population. Gene 2019; 688:215-220. [DOI: 10.1016/j.gene.2018.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 11/20/2018] [Accepted: 12/01/2018] [Indexed: 01/29/2023]
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A multiethnic meta-analysis defined the association of rs12946942 with severe adolescent idiopathic scoliosis. J Hum Genet 2019; 64:493-498. [DOI: 10.1038/s10038-019-0575-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 02/08/2023]
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20
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Positive association between the progression of idiopathic scoliosis and the common variant near the LBX1 gene in Southeast European population. J Appl Biomed 2018. [DOI: 10.1016/j.jab.2018.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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21
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Kou I, Watanabe K, Takahashi Y, Momozawa Y, Khanshour A, Grauers A, Zhou H, Liu G, Fan YH, Takeda K, Ogura Y, Zhou T, Iwasaki Y, Kubo M, Wu Z, Matsumoto M, Einarsdottir E, Kere J, Huang D, Qiu G, Qiu Y, Wise CA, Song YQ, Wu N, Su P, Gerdhem P, Ikegawa S. A multi-ethnic meta-analysis confirms the association of rs6570507 with adolescent idiopathic scoliosis. Sci Rep 2018; 8:11575. [PMID: 30069010 PMCID: PMC6070519 DOI: 10.1038/s41598-018-29011-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 06/29/2018] [Indexed: 01/04/2023] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is the most common type of spinal deformity and has a significant genetic background. Genome-wide association studies (GWASs) identified several susceptibility loci associated with AIS. Among them is a locus on chromosome 6q24.1 that we identified by a GWAS in a Japanese cohort. The locus is represented by rs6570507 located within GPR126. To ensure the association of rs6570507 with AIS, we conducted a meta-analysis using eight cohorts from East Asia, Northern Europe and USA. The analysis included a total of 6,873 cases and 38,916 controls and yielded significant association (combined P = 2.95 × 10-20; odds ratio = 1.22), providing convincing evidence of the worldwide association between rs6570507 and AIS susceptibility. In silico analyses strongly suggested that GPR126 is a susceptibility gene at this locus.
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Affiliation(s)
- Ikuyo Kou
- Laboratory of Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
| | - Kota Watanabe
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan.
| | - Yohei Takahashi
- Laboratory of Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.,Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yukihide Momozawa
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Anas Khanshour
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research, Texas Scottish Rite Hospital for Children, Dallas, Texas, USA
| | - Anna Grauers
- Department of Orthopaedics, Sundsvall and Härnösand County Hospital, Sundsvall, Sweden.,Department of Clinical Science, Intervention and Technology (CLINTEC) Karolinska Institutet, Stockholm, Sweden
| | - Hang Zhou
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Gang Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yan-Hui Fan
- Department of Biochemistry, University of Hong Kong, Hong Kong, China
| | - Kazuki Takeda
- Laboratory of Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.,Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yoji Ogura
- Laboratory of Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.,Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Taifeng Zhou
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yusuke Iwasaki
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Michiaki Kubo
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Zhihong Wu
- Department of Central Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Morio Matsumoto
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | | | | | - Elisabet Einarsdottir
- Folkhälsan Institute of Genetics, and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, , Karolinska Institutet, Huddinge, Sweden
| | - Juha Kere
- Folkhälsan Institute of Genetics, and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, , Karolinska Institutet, Huddinge, Sweden.,Department of Medical and Molecular Genetics, King's College London, Guy's Hospital, London, UK
| | - Dongsheng Huang
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Guixing Qiu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Yong Qiu
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Carol A Wise
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research, Texas Scottish Rite Hospital for Children, Dallas, Texas, USA.,McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, USA.,Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, USA.,Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, USA
| | - You-Qiang Song
- Department of Biochemistry, University of Hong Kong, Hong Kong, China
| | - Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Peiqiang Su
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Paul Gerdhem
- Department of Clinical Science, Intervention and Technology (CLINTEC) Karolinska Institutet, Stockholm, Sweden.,Department of Orthopaedics, Karolinska University Hospital, Stockholm, Sweden
| | - Shiro Ikegawa
- Laboratory of Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.
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Idiopathic Scoliosis Families Highlight Actin-Based and Microtubule-Based Cellular Projections and Extracellular Matrix in Disease Etiology. G3-GENES GENOMES GENETICS 2018; 8:2663-2672. [PMID: 29930198 PMCID: PMC6071588 DOI: 10.1534/g3.118.200290] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Idiopathic scoliosis (IS) is a structural lateral spinal curvature of ≥10° that affects up to 3% of otherwise healthy children and can lead to life-long problems in severe cases. It is well-established that IS is a genetic disorder. Previous studies have identified genes that may contribute to the IS phenotype, but the overall genetic etiology of IS is not well understood. We used exome sequencing to study five multigenerational families with IS. Bioinformatic analyses identified unique and low frequency variants (minor allele frequency ≤5%) that were present in all sequenced members of the family. Across the five families, we identified a total of 270 variants with predicted functional consequences in 246 genes, and found that eight genes were shared by two families. We performed GO term enrichment analyses, with the hypothesis that certain functional annotations or pathways would be enriched in the 246 genes identified in our IS families. Using three complementary programs to complete these analyses, we identified enriched categories that include stereocilia and other actin-based cellular projections, cilia and other microtubule-based cellular projections, and the extracellular matrix (ECM). Our results suggest that there are multiple paths to IS and provide a foundation for future studies of IS pathogenesis.
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A Replication Study for the Association of rs11190870 With Curve Severity in Adolescent Idiopathic Scoliosis in Japanese. Spine (Phila Pa 1976) 2018; 43:688-692. [PMID: 28902104 DOI: 10.1097/brs.0000000000002413] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Case-only study. OBJECTIVE The aim of this study was to confirm the association of rs11190870 with adolescent idiopathic scoliosis (AIS) severity in Japanese patients with AIS. SUMMARY OF BACKGROUND DATA Although the association of rs11190870 with AIS susceptibility is replicated in multiple ethnics, the association of rs11190870 with curve severity is controversial. Since the previous studies are of small, we performed a replication study using far larger number of patients than previous studies. METHODS A total of 1860 Japanese patients with AIS who had reached skeletal maturity or undergone surgical fusion were included in the study. We evaluated the association between rs11190870 and AIS progression for the entire group, and then for patients grouped according to a severe curve (a Cobb angle of ≥40°) or mild curve (a Cobb angle <30°). Because braces could affect the results of the present study, patients in the mild-curve group were divided according to whether or not they had worn a brace. We then evaluated associations between rs11190870 genotype and curve severity in these groups. RESULTS The mean Cobb angles were 54.8° ± 12.1° in the severe-curve group and 24.4° ± 4.0° in the mild-curve group. The difference in rs11190870 risk-allele frequency between the severe- and mild-curve groups was evaluated. No significant differences were observed. We then examined the association of rs11190870 risk-allele frequency between patients in the mild- and severe-curve groups using the χ test for three models, and found a marginal association between rs11190870 and curve severity in the dominant model (P = 0.035, odds ratio = 1.51). CONCLUSION We found no association between rs11190870 and curve severity using the criteria of previous study. However, we found a marginal association between rs11190870 and curve severity. Large-scale replication studies that consider skeletal maturity and brace history, including replication studies in other ethnic groups, would be helpful for clarifying the association. LEVEL OF EVIDENCE 4.
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Abstract
STUDY DESIGN This is a genetic association study. OBJECTIVE To investigate association between suppressor of cytokine signaling-3 (SOCS3) gene polymorphisms and the onset and progression of lumbar adolescent idiopathic scoliosis (AIS) and to further clarify its role in the regulation of SOCS3 expression in AIS patients. SUMMARY OF BACKGROUND DATA Some studies showed that muscle development imbalance may be responsible for onset and progression of lumbar AIS. SOCS3 is one of the significant regulators of skeletal muscle development, and in vitro study showed that SOCS3 influences myoblast differentiation. MATERIALS AND METHODS Rs4969198 was genotyped in 476 lumbar AIS patients and 672 controls. The differences of genotype and allele distributions between patients and controls were calculated using the χ test. Paravertebral muscles were collected from 53 AIS, 23 congenital scoliosis, and 18 lumbar disk herniation patients. AIS patients were classified into 3 groups according to the genotypes of each single nucleotide polymorphisms, and 1-way analysis of variance test was used to compare SOCS3 expression among different groups and genotypes. RESULTS Patients were found to have a significantly higher frequency of GG than the controls (40.8% vs. 29.9%, odds ratio=1.36; P=0.000), and the frequency of allele G was found to be remarkably higher in the patients than the controls (65.3% vs. 56.7%, odds ratio=1.15; P=0.000). AIS patients had significantly less muscle expression of the SOCS3 than the congenital scoliosis patients (2.73±2.17 vs. 4.62±2.41; P=0.006) and the lumbar disk herniation patients (2.73±2.17 vs. 4.12±2.93; P=0.009). The SOCS3 expression was significantly correlated with the curve severity (r=0.472; P=0.014). CONCLUSIONS The SOCS3 gene is significantly associated with the development of lumbar AIS in Chinese population. Decreased expression of SOCS3 is associated with larger severity of lumbar AIS. LEVEL OF EVIDENCE Level III.
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Ogura Y, Takeda K, Kou I, Khanshour A, Grauers A, Zhou H, Liu G, Fan YH, Zhou T, Wu Z, Takahashi Y, Matsumoto M, Einarsdottir E, Kere J, Huang D, Qiu G, Xu L, Qiu Y, Wise CA, Song YQ, Wu N, Su P, Gerdhem P, Watanabe K, Ikegawa S. An international meta-analysis confirms the association of BNC2 with adolescent idiopathic scoliosis. Sci Rep 2018; 8:4730. [PMID: 29549362 PMCID: PMC5856832 DOI: 10.1038/s41598-018-22552-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 02/26/2018] [Indexed: 11/18/2022] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is a common spinal deformity with the prevalence of approximately 3%. We previously conducted a genome-wide association study (GWAS) using a Japanese cohort and identified a novel locus on chromosome 9p22.2. However, a replication study using multi-population cohorts has not been conducted. To confirm the association of 9p22.2 locus with AIS in multi-ethnic populations, we conducted international meta-analysis using eight cohorts. In total, we analyzed 8,756 cases and 27,822 controls. The analysis showed a convincing evidence of association between rs3904778 and AIS. Seven out of eight cohorts had significant P value, and remaining one cohort also had the same trend as the seven. The combined P was 3.28 × 10−18 (odds ratio = 1.19, 95% confidence interval = 1.14–1.24). In silico analyses suggested that BNC2 is the AIS susceptibility gene in this locus.
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Affiliation(s)
- Yoji Ogura
- Laboratory of Bone and Joint Diseases, Center for Integrative Medical Sciences, RIKEN, Tokyo, Japan.,Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kazuki Takeda
- Laboratory of Bone and Joint Diseases, Center for Integrative Medical Sciences, RIKEN, Tokyo, Japan.,Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Ikuyo Kou
- Laboratory of Bone and Joint Diseases, Center for Integrative Medical Sciences, RIKEN, Tokyo, Japan
| | - Anas Khanshour
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research, Texas Scottish Rite Hospital for Children, Dallas, Texas, USA
| | - Anna Grauers
- Department of Orthopaedics, Sundsvall and Härnösand County Hospital, Sundsvall, Sweden.,Department of Clinical Science, Intervention and Technology (CLINTEC) Karolinska Institutet, Stockholm, Sweden
| | - Hang Zhou
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Gang Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yan-Hui Fan
- Department of Biochemistry, University of Hong Kong, Hong Kong, China
| | - Taifeng Zhou
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Zhihong Wu
- Department of Central Laboratory, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Yohei Takahashi
- Laboratory of Bone and Joint Diseases, Center for Integrative Medical Sciences, RIKEN, Tokyo, Japan.,Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Morio Matsumoto
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | | | | | - Elisabet Einarsdottir
- Folkhälsan Institute of Genetics, and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Juha Kere
- Folkhälsan Institute of Genetics, and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Department of Medical and Molecular Genetics, King's College London, Guy's Hospital, London, United Kingdom
| | - Dongsheng Huang
- Department of Spine Surgery, The Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Guixing Qiu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Leilei Xu
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Yong Qiu
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Carol A Wise
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research, Texas Scottish Rite Hospital for Children, Dallas, Texas, USA.,McDermott Center for Human Growth and Development, Department of Pediatrics and Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, USA
| | - You-Qiang Song
- Department of Biochemistry, University of Hong Kong, Hong Kong, China
| | - Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Peiqiang Su
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Paul Gerdhem
- Department of Clinical Science, Intervention and Technology (CLINTEC) Karolinska Institutet, Stockholm, Sweden.,Department of Orthopaedics, Karolinska University Hospital, Huddinge, Sweden
| | - Kota Watanabe
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan.
| | - Shiro Ikegawa
- Laboratory of Bone and Joint Diseases, Center for Integrative Medical Sciences, RIKEN, Tokyo, Japan.
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Li YL, Gao SJ, Xu H, Liu Y, Li HL, Chen XY, Ning GZ, Feng SQ. The association of rs11190870 near LBX1 with the susceptibility and severity of AIS, a meta-analysis. Int J Surg 2018. [PMID: 29535018 DOI: 10.1016/j.ijsu.2018.01.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Adolescent idiopathic scoliosis (AIS) is the most common structural deformity of the spine. Genetics constitute largely to AIS, and the rs11190870 polymorphism has the potential for use in public health and clinical settings as a predictor of AIS risk. The aim of the present meta-analysis was to provide exhaustive evidence to evaluate the association of rs11190870 with the susceptibility and severity of adolescent idiopathic scoliosis (AIS) in multiple ethnic groups and different genders. MATERIALS AND METHODS The professional databases, including PubMed, Embase, Social Sciences Citation Index, CINAHL, and International Bibliography of the Social Sciences, were searched from 1966 to October 2015. No language restriction was applied. Reference lists of all the selected articles were hand-searched for any additional studies. Three authors independently extracted data from all eligible studies. The data were analyzed by meta-analysis using fixed-effects or random-effects models with mean differences and risk ratios for continuous and dichotomous variables, respectively. RESULTS Eight studies were included, and the pooled analysis suggested that the T genotype of SNP rs11190870 leads to a higher risk of AIS in multiple ethnic groups regardless of gender (Total:OR, 1.66, 95% CI 1.53, 1.79; I2 = 37.3%, P = 0.000, Female: OR, 1.62, 95% CI 1.50, 1.73; I2 = 26.7%, P = 0.000, Male: OR, 1.79, 95% CI 1.38, 2.20; I2 = 0.00%, P = 0.000). Additionally, the TT and TC genotype had a larger Cobb angle than those with the CC genotype in the overall and female Asian populations. CONCLUSION A significant association of rs11190870 with AIS was observed in multiple ethnic groups regardless of gender. Additionally, a significant association was found between rs11190870 and curve severity in the overall and female Asian populations. Due to the limited data and clinical heterogeneity, further studies with large sample sizes are required.
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Affiliation(s)
- Yu-Lin Li
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
| | - Shi-Jie Gao
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
| | - Hong Xu
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
| | - Yang Liu
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
| | - Hai-Liang Li
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
| | - Xing-Yu Chen
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
| | - Guang-Zhi Ning
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
| | - Shi-Qing Feng
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, PR China; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, PR China.
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27
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A Replication Study for Association of LBX1 Locus With Adolescent Idiopathic Scoliosis in French-Canadian Population. Spine (Phila Pa 1976) 2018; 43:172-178. [PMID: 28604496 DOI: 10.1097/brs.0000000000002280] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A case-control association study. OBJECTIVES To investigate the relationship between LBX1 (lady bird homeobox1) polymorphisms and adolescent idiopathic scoliosis (AIS) in French-Canadian population. SUMMARY OF BACKGROUND DATA It is widely accepted that genetic factors contribute to AIS. Although the LBX1 locus is so far the most successfully replicated locus in different AIS cohorts, these associations were replicated mainly in Asian populations, with few studies in Caucasian populations of European descent. METHODS We recruited 1568 participants (667 AIS patients and 901 healthy controls) in the French-Canadian population. Genomic data were generated using the Illumina Human Omni 2.5M BeadChip. An additional 121 AIS cases and 51 controls were genotyped for specific single-nucleotide polymorphisms (SNPs) by multiplex polymerase chain reaction using standard procedures. BEAGLE 3 was used to impute the following markers: rs7893223, rs11190878, and rs678741 against the 1000-genomes European cohort phased genotypes given that they were absent in our genome wide association studies (GWAS) panel. Resulting genotypes were combined then used for single marker and haplotyped-based association. RESULTS Four markers showed association with AIS in our cohort at this locus; rs11190870 the most studied marker, rs7893223, rs594791, and rs11190878. When we restricted the analysis to severe cases only, four additional SNPs showed associations: rs11598177, rs1322331, rs670206, and rs678741. In addition, we analyzed the associations of the observed haplotypes and dihaplotypes formed by these SNPs. The haplotype TTAAGAAA and its homozygous dihaplotype showed the highest association with our severe group and was the highest risk haplotype. The haplotype CCGCAGGG was significantly more associated with the control group, and its homozygous or heterozygous dihaplotype was less frequent in the severe group compared with the control group, suggesting that CCGCAGGG may represent a protective haplotype. CONCLUSION We have replicated the association of the LBX1 locus with AIS in French-Canadian population, a novel European descent cohort, which is known for its unique genetic architecture. LEVEL OF EVIDENCE 3.
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28
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Liu S, Wu N, Zuo Y, Zhou Y, Liu J, Liu Z, Chen W, Liu G, Chen Y, Chen J, Lin M, Zhao Y, Ming Y, Yuan T, Li X, Xia Z, Yang X, Ma Y, Zhang J, Shen J, Li S, Wang Y, Zhao H, Yu K, Zhao Y, Weng X, Qiu G, Wu Z. Genetic Polymorphism of LBX1 Is Associated With Adolescent Idiopathic Scoliosis in Northern Chinese Han Population. Spine (Phila Pa 1976) 2017; 42:1125-1129. [PMID: 28187071 DOI: 10.1097/brs.0000000000002111] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A case-control association study was performed to investigate the relationship between ladybird homeobox (LBX1) and adolescent idiopathic scoliosis (AIS) in northern Chinese Han population. OBJECTIVE To explore the prevalence and functional importance of LBX1 polymorphisms in patients with AIS within the northern Chinese Han population. SUMMARY OF BACKGROUND DATA AIS is the most common subtype of idiopathic scoliosis. Genetic factors such as LBX1 polymorphisms have been recently proved to be associated with AIS in some populations. In this study we explored the prevalence and functional importance of the polymorphisms around LBX1 in patients with AIS within the northern Chinese Han population. METHODS Five tag single nucleotide polymorphisms (SNPs) around or in LBX1 were genotyped in 180 patients with AIS and 182 controls. And the luciferase assay was performed to explore the functional importance of the most significant SNPs. RESULTS We replicated that rs11190870, previously reported as the most significantly associated SNP, was enriched in our AIS cohort. In addition, we found that the T allele of rs1322331 was associated with a novel risk allele (odds ratio = 3.349, 95% confidence interval 1.742-6.436). In the following luciferase assay, the TT-type promoter showed significantly reduced transcription activity in vitro. CONCLUSION Two SNPs around LBX1, rs11190870 and rs1322331 are associated with AIS in northern Chinese Han population. The T allele of rs1322331 is a novel risk allele. We hypothesize that rs1322331 might increase patients' susceptibility to AIS by reducing LBX1-AS1 transcription and thus upregulating the function of LBX1. LEVEL OF EVIDENCE 3.
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Affiliation(s)
- Sen Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Yuzhi Zuo
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yangzhong Zhou
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Jiaqi Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Zhenlei Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Weisheng Chen
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Gang Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yixin Chen
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Jia Chen
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Mao Lin
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yanxue Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yue Ming
- Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China
| | - Tangmi Yuan
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Xiao Li
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Zenan Xia
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Xu Yang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yufen Ma
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Jianguo Zhang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Jianxiong Shen
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Shugang Li
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yipeng Wang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Hong Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Keyi Yu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yu Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Xisheng Weng
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Guixing Qiu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhihong Wu
- Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Medical Research Center of Orthopedics, Chinese Academy of Medical Sciences, Beijing, China
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Identification of Elongated Primary Cilia with Impaired Mechanotransduction in Idiopathic Scoliosis Patients. Sci Rep 2017; 7:44260. [PMID: 28290481 PMCID: PMC5349607 DOI: 10.1038/srep44260] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 02/07/2017] [Indexed: 12/18/2022] Open
Abstract
The primary cilium is an outward projecting antenna-like organelle with an important role in bone mechanotransduction. The capacity to sense mechanical stimuli can affect important cellular and molecular aspects of bone tissue. Idiopathic scoliosis (IS) is a complex pediatric disease of unknown cause, defined by abnormal spinal curvatures. We demonstrate significant elongation of primary cilia in IS patient bone cells. In response to mechanical stimulation, these IS cells differentially express osteogenic factors, mechanosensitive genes, and signaling genes. Considering that numerous ciliary genes are associated with a scoliosis phenotype, among ciliopathies and knockout animal models, we expected IS patients to have an accumulation of rare variants in ciliary genes. Instead, our SKAT-O analysis of whole exomes showed an enrichment among IS patients for rare variants in genes with a role in cellular mechanotransduction. Our data indicates defective cilia in IS bone cells, which may be linked to heterogeneous gene variants pertaining to cellular mechanotransduction.
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30
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Moreau A. The next personalized medicine evolution in orthopedics: how diagnosing and treating scoliosis are about to change. Per Med 2017; 14:89-92. [PMID: 28757885 PMCID: PMC5480784 DOI: 10.2217/pme-2016-0094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 12/12/2016] [Indexed: 11/23/2022]
Affiliation(s)
- Alain Moreau
- Viscogliosi Laboratory in Molecular Genetics of Musculoskeletal Diseases, Sainte-Justine University Hospital Research Center, Montréal, 3175 Cote-Ste-Catherine Road, Montreal, Québec, H3T 1C5, Canada
- Department of Stomatology, Faculty of Dentistry, Université de Montréal, Montréal, Québec, H3T 1J4, Canada
- Department of Biochemistry & Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, Québec, H3T 1J4, Canada
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Cao Y, Min J, Zhang Q, Li H, Li H. Associations of LBX1 gene and adolescent idiopathic scoliosis susceptibility: a meta-analysis based on 34,626 subjects. BMC Musculoskelet Disord 2016; 17:309. [PMID: 27450593 PMCID: PMC4957912 DOI: 10.1186/s12891-016-1139-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Accepted: 06/29/2016] [Indexed: 11/10/2022] Open
Abstract
Background The results of studies investigating the association between the ladybird homeobox 1 (LBX1) gene polymorphisms and the risk of adolescent idiopathic scoliosis (AIS) are not all the same. As such, we performed a meta-analysis to estimate the association between LBX1 gene polymorphisms and AIS susceptibility. Methods Relevant studies published before 15 November 2015 were identified by searching PubMed, EMBASE, ISI web of knowledge, EBSCO, CNKI and CBM. The strength of relationship was assessed by using odds ratios (ORs) and 95 % confidence interval (CI). Results A total number of eight case-control studies including 10,088 cases and 24,538 controls were identified. The results showed that T allele of rs111090870 increased AIS susceptibility in Asians (T vs. C, OR = 1.22, 95 % CI: 1.16–1.29, P < 0.001), Caucasians (T vs. C, OR = 1.17, 95 % CI: 1.14–1.21, P < 0.001) and in female (T vs. C, OR = 1.21, 95 % CI: 1.17–1.25, P < 0.001). The G allele of rs678741 decreased AIS risk in female (G vs. A, OR = 0.83, 95 % CI: 0.81–0.85, P < 0.001), and the G allele of the rs625039 increased AIS susceptibility in Asians (G vs. A, OR = 1.14, 95 % CI: 1.11–1.17, P < 0.001). Conclusions Our meta-analysis provides evidence that rs111090870, rs678741 and rs625039 polymorphisms near LBX1 gene are associated with AIS susceptibility in some populations. However, our findings are based on only a limited number of studies. Electronic supplementary material The online version of this article (doi:10.1186/s12891-016-1139-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yaqin Cao
- Department of Orthopaedics, the First People's Hospital of Huzhou, 158 Guangchanghou Road, Huzhou, Zhejiang Province, 313000, China
| | - Jikang Min
- Department of Orthopaedics, the First People's Hospital of Huzhou, 158 Guangchanghou Road, Huzhou, Zhejiang Province, 313000, China.
| | - Qianghua Zhang
- Department of Orthopaedics, the First People's Hospital of Huzhou, 158 Guangchanghou Road, Huzhou, Zhejiang Province, 313000, China
| | - Heng Li
- Department of Orthopaedics, the First People's Hospital of Huzhou, 158 Guangchanghou Road, Huzhou, Zhejiang Province, 313000, China
| | - Haidong Li
- Department of Orthopaedics, the First People's Hospital of Huzhou, 158 Guangchanghou Road, Huzhou, Zhejiang Province, 313000, China
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Ikegawa S. Genomic study of adolescent idiopathic scoliosis in Japan. SCOLIOSIS AND SPINAL DISORDERS 2016; 11:5. [PMID: 27299157 PMCID: PMC4900236 DOI: 10.1186/s13013-016-0067-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 01/10/2016] [Indexed: 02/01/2023]
Abstract
Adolescent idiopathic scoliosis (AIS) is a common disease. It is a multi-factorial (polygenic) disease controlled by genetic and environmental factors. Studies searching for genetic factors of AIS using linkage and association analyses have been conducted and several susceptibility genes have been reported. This paper reviews the recent progress in the genome-wide association study of AIS in Japan and comments on its future task.
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Affiliation(s)
- Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639 Japan
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Guo L, Yamashita H, Kou I, Takimoto A, Meguro-Horike M, Horike SI, Sakuma T, Miura S, Adachi T, Yamamoto T, Ikegawa S, Hiraki Y, Shukunami C. Functional Investigation of a Non-coding Variant Associated with Adolescent Idiopathic Scoliosis in Zebrafish: Elevated Expression of the Ladybird Homeobox Gene Causes Body Axis Deformation. PLoS Genet 2016; 12:e1005802. [PMID: 26820155 PMCID: PMC4731154 DOI: 10.1371/journal.pgen.1005802] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 12/21/2015] [Indexed: 11/23/2022] Open
Abstract
Previously, we identified an adolescent idiopathic scoliosis susceptibility locus near human ladybird homeobox 1 (LBX1) and FLJ41350 by a genome-wide association study. Here, we characterized the associated non-coding variant and investigated the function of these genes. A chromosome conformation capture assay revealed that the genome region with the most significantly associated single nucleotide polymorphism (rs11190870) physically interacted with the promoter region of LBX1-FLJ41350. The promoter in the direction of LBX1, combined with a 590-bp region including rs11190870, had higher transcriptional activity with the risk allele than that with the non-risk allele in HEK 293T cells. The ubiquitous overexpression of human LBX1 or either of the zebrafish lbx genes (lbx1a, lbx1b, and lbx2), but not FLJ41350, in zebrafish embryos caused body curvature followed by death prior to vertebral column formation. Such body axis deformation was not observed in transcription activator-like effector nucleases mediated knockout zebrafish of lbx1b or lbx2. Mosaic expression of lbx1b driven by the GATA2 minimal promoter and the lbx1b enhancer in zebrafish significantly alleviated the embryonic lethal phenotype to allow observation of the later onset of the spinal curvature with or without vertebral malformation. Deformation of the embryonic body axis by lbx1b overexpression was associated with defects in convergent extension, which is a component of the main axis-elongation machinery in gastrulating embryos. In embryos overexpressing lbx1b, wnt5b, a ligand of the non-canonical Wnt/planar cell polarity (PCP) pathway, was significantly downregulated. Injection of mRNA for wnt5b or RhoA, a key downstream effector of Wnt/PCP signaling, rescued the defective convergent extension phenotype and attenuated the lbx1b-induced curvature of the body axis. Thus, our study presents a novel pathological feature of LBX1 and its zebrafish homologs in body axis deformation at various stages of embryonic and subsequent growth in zebrafish. Scoliosis is the most common type of spinal deformity with a lateral spinal curvature of at least 10 degrees, affecting 2–4% of the population. Scoliosis caused by a primary problem related to the spine itself is classified into congenital scoliosis (CS) and idiopathic scoliosis (IS). Among these, adolescent idiopathic scoliosis (AIS), the most common form of scoliosis, is known as a common polygenic disease. Severe curving of the spine in scoliosis leads to profound psychological and social impacts, but etiology-based therapies have not been established since the precise pathological mechanisms of both IS and CS remain undefined. Previously, we identified an AIS susceptibility locus near human ladybird homeobox 1 (LBX1) by a genome-wide association study. Here, we report the functional characterization of the most significantly associated single nucleotide polymorphism (SNP), rs11190870 and LBX1 as well as its zebrafish homologues. Overexpression of LBX1 and zebrafish lbx genes caused lateral body curvature in association with the impairment of non-canonical Wnt/planar cell polarity signaling. Thus, our study presents a novel pathological feature of LBX1 in body axis deformation.
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Affiliation(s)
- Long Guo
- Department of Cellular Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Hiroshi Yamashita
- Department of Molecular Biology and Biochemistry, Division of Basic Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ikuyo Kou
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
| | - Aki Takimoto
- Department of Cellular Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Makiko Meguro-Horike
- Division of Functional Genomics, Advanced Science Research Center, Kanazawa University, Kanazawa, Japan
| | - Shin-ichi Horike
- Division of Functional Genomics, Advanced Science Research Center, Kanazawa University, Kanazawa, Japan
| | - Tetsushi Sakuma
- Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Shigenori Miura
- Department of Cellular Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Taiji Adachi
- Department of Biomechanics, Research Center for Nano Medical Engineering, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takashi Yamamoto
- Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
| | - Yuji Hiraki
- Department of Cellular Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Chisa Shukunami
- Department of Cellular Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
- Department of Molecular Biology and Biochemistry, Division of Basic Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- * E-mail:
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Xu L, Sun W, Qin X, Qiu Y, Zhu Z. The TGFB1 gene is associated with curve severity but not with the development of adolescent idiopathic scoliosis: a replication study in the Chinese population. BMC Musculoskelet Disord 2016; 17:15. [PMID: 26758901 PMCID: PMC4711171 DOI: 10.1186/s12891-016-0863-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 01/05/2016] [Indexed: 11/24/2022] Open
Abstract
Background The transforming growth factor beta-1 (TGFB1) gene was recently reported to be a new susceptible gene of adolescent idiopathic scoliosis (AIS) in Russian population. This study aimed to replicate the relationship between the TGFB1 gene and the susceptibility of AIS in a Chinese population, and to further describe its association with the curve severity. Methods A total of 1251 female AIS patients and 994 age-matched healthy controls were included in this study. The rs1800469 of TGFB1 gene was genotyped for all participants using the PCR-based Invader assay. The differences of genotype and allele distributions between AIS patients and healthy controls were assessed using the Chi-square test. One-way ANOVA test was used to compare the mean Cobb angles among patients with different genotypes. Results There was no significant difference in terms of the genotype and the allele frequency between the patients and the controls. The mean Cobb angle was 34.7 ± 11.9° (range 25–61°). Case-only analysis showed that rs1800469 was significantly associated with the curve severity. Patients with genotype TT had remarkably higher curve magnitude (39.1 ± 12.8°) than those with genotype CT (34.8 ± 11.1°) or CC (32.1 ± 10.6°). Conclusions The TGFB1 gene may not be a predisposition gene of AIS in the Chinese population. However, it can play a role in the curve progression of AIS. Replication studies in other ethnic groups are warranted to understand the implication of TGFB1 gene in AIS.
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Affiliation(s)
- Leilei Xu
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Zhongshan Road 321, Nanjing, 210008, China
| | - Weixiang Sun
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Zhongshan Road 321, Nanjing, 210008, China
| | - Xiaodong Qin
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Zhongshan Road 321, Nanjing, 210008, China
| | - Yong Qiu
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Zhongshan Road 321, Nanjing, 210008, China
| | - Zezhang Zhu
- Department of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Zhongshan Road 321, Nanjing, 210008, China.
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Grauers A, Wang J, Einarsdottir E, Simony A, Danielsson A, Åkesson K, Ohlin A, Halldin K, Grabowski P, Tenne M, Laivuori H, Dahlman I, Andersen M, Christensen SB, Karlsson MK, Jiao H, Kere J, Gerdhem P. Candidate gene analysis and exome sequencing confirm LBX1 as a susceptibility gene for idiopathic scoliosis. Spine J 2015; 15:2239-46. [PMID: 25987191 DOI: 10.1016/j.spinee.2015.05.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 04/09/2015] [Accepted: 05/07/2015] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Idiopathic scoliosis is a spinal deformity affecting approximately 3% of otherwise healthy children or adolescents. The etiology is still largely unknown but has an important genetic component. Genome-wide association studies have identified a number of common genetic variants that are significantly associated with idiopathic scoliosis in Asian and Caucasian populations, rs11190870 close to the LBX1 gene being the most replicated finding. PURPOSE The aim of the present study was to investigate the genetics of idiopathic scoliosis in a Scandinavian cohort by performing a candidate gene study of four variants previously shown to be associated with idiopathic scoliosis and exome sequencing of idiopathic scoliosis patients with a severe phenotype to identify possible novel scoliosis risk variants. STUDY DESIGN This was a case control study. PATIENT SAMPLE A total of 1,739 patients with idiopathic scoliosis and 1,812 controls were included. OUTCOME MEASURE The outcome measure was idiopathic scoliosis. METHODS The variants rs10510181, rs11190870, rs12946942, and rs6570507 were genotyped in 1,739 patients with idiopathic scoliosis and 1,812 controls. Exome sequencing was performed on pooled samples from 100 surgically treated idiopathic scoliosis patients. Novel or rare missense, nonsense, or splice site variants were selected for individual genotyping in the 1,739 cases and 1,812 controls. In addition, the 5'UTR, noncoding exon and promoter regions of LBX1, not covered by exome sequencing, were Sanger sequenced in the 100 pooled samples. RESULTS Of the four candidate genes, an intergenic variant, rs11190870, downstream of the LBX1 gene, showed a highly significant association to idiopathic scoliosis in 1,739 cases and 1,812 controls (p=7.0×10(-18)). We identified 20 novel variants by exome sequencing after filtration and an initial genotyping validation. However, we could not verify any association to idiopathic scoliosis in the large cohort of 1,739 cases and 1,812 controls. We did not find any variants in the 5'UTR, noncoding exon and promoter regions of LBX1. CONCLUSIONS Here, we confirm LBX1 as a susceptibility gene for idiopathic scoliosis in a Scandinavian population and report that we are unable to find evidence of other genes of similar or stronger effect.
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Affiliation(s)
- Anna Grauers
- Department of Orthopedics, Sundsvall and Härnösand County Hospital, SE-85186, Sundsvall, Sweden; Department of Orthopedics, Karolinska University Hospital, K54, SE-14186, Stockholm, Sweden; Department of Clinical Sciences, Intervention and Technology (CLINTEC) Karolinska Institutet, SE-14186, Stockholm, Sweden
| | - Jingwen Wang
- Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden; Center for Innovative Medicine, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden
| | - Elisabet Einarsdottir
- Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden; Center for Innovative Medicine, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden
| | - Ane Simony
- Sector for Spine Surgery and Research, Middelfart Hospital, Middelfart, Denmark
| | - Aina Danielsson
- Department of Orthopedics, Sahlgren University Hospital, Gothenburg, Sweden
| | - Kristina Åkesson
- Department of Orthopedics and Clinical Sciences, Lund University, Skane University Hospital, Malmö, Sweden
| | - Acke Ohlin
- Department of Orthopedics and Clinical Sciences, Lund University, Skane University Hospital, Malmö, Sweden
| | - Klas Halldin
- Department of Orthopedics, Sahlgren University Hospital, Gothenburg, Sweden
| | - Pawel Grabowski
- Department of Orthopedics, University Hospital of Umeå, Umeå, Sweden
| | - Max Tenne
- Department of Orthopedics and Clinical Sciences, Lund University, Skane University Hospital, Malmö, Sweden
| | - Hannele Laivuori
- Department of Medical Genetics and Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Institute for Molecular Medicine Finland, University of Helsinki, Tukholmankatu 8, Helsinki, Finland
| | - Ingrid Dahlman
- Department of Medicine, Lipid Laboratory, Karolinska Institutet, SE-14186, Stockholm, Sweden
| | - Mikkel Andersen
- Sector for Spine Surgery and Research, Middelfart Hospital, Middelfart, Denmark
| | | | - Magnus K Karlsson
- Department of Orthopedics and Clinical Sciences, Lund University, Skane University Hospital, Malmö, Sweden
| | - Hong Jiao
- Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden; Center for Innovative Medicine, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden
| | - Juha Kere
- Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden; Center for Innovative Medicine, Karolinska Institutet, Novum, Hälsovägen 7-9, SE-14183, Huddinge, Sweden; Molecular Neurology Research Program, University of Helsinki and Folkhälsan Institute of Genetics, Helsinki, Finland.
| | - Paul Gerdhem
- Department of Orthopedics, Karolinska University Hospital, K54, SE-14186, Stockholm, Sweden; Department of Clinical Sciences, Intervention and Technology (CLINTEC) Karolinska Institutet, SE-14186, Stockholm, Sweden.
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Genome-wide association study identifies new susceptibility loci for adolescent idiopathic scoliosis in Chinese girls. Nat Commun 2015; 6:8355. [PMID: 26394188 PMCID: PMC4595747 DOI: 10.1038/ncomms9355] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 08/13/2015] [Indexed: 02/05/2023] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is a structural deformity of the spine affecting millions of children. As a complex disease, the genetic aetiology of AIS remains obscure. Here we report the results of a four-stage genome-wide association study (GWAS) conducted in a sample of 4,317 AIS patients and 6,016 controls. Overall, we identify three new susceptibility loci at 1p36.32 near AJAP1 (rs241215, Pcombined=2.95 × 10−9), 2q36.1 between PAX3 and EPHA4 (rs13398147, Pcombined=7.59 × 10−13) and 18q21.33 near BCL-2 (rs4940576, Pcombined=2.22 × 10−12). In addition, we refine a previously reported region associated with AIS at 10q24.32 (rs678741, Pcombined=9.68 × 10−37), which suggests LBX1AS1, encoding an antisense transcript of LBX1, might be a functional variant of AIS. This is the first GWAS investigating genetic variants associated with AIS in Chinese population, and the findings provide new insight into the multiple aetiological mechanisms of AIS. The authors perform a genome-wide association study of adolescent idiopathic scoliosis patients of Han Chinese descent, and identify 3 new loci for disease susceptibility.
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Ogura Y, Kou I, Miura S, Takahashi A, Xu L, Takeda K, Takahashi Y, Kono K, Kawakami N, Uno K, Ito M, Minami S, Yonezawa I, Yanagida H, Taneichi H, Zhu Z, Tsuji T, Suzuki T, Sudo H, Kotani T, Watanabe K, Hosogane N, Okada E, Iida A, Nakajima M, Sudo A, Chiba K, Hiraki Y, Toyama Y, Qiu Y, Shukunami C, Kamatani Y, Kubo M, Matsumoto M, Ikegawa S. A Functional SNP in BNC2 Is Associated with Adolescent Idiopathic Scoliosis. Am J Hum Genet 2015. [PMID: 26211971 DOI: 10.1016/j.ajhg.2015.06.012] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is the most common spinal deformity. We previously conducted a genome-wide association study (GWAS) and detected two loci associated with AIS. To identify additional loci, we extended our GWAS by increasing the number of cohorts (2,109 affected subjects and 11,140 control subjects in total) and conducting a whole-genome imputation. Through the extended GWAS and replication studies using independent Japanese and Chinese populations, we identified a susceptibility locus on chromosome 9p22.2 (p = 2.46 × 10(-13); odds ratio = 1.21). The most significantly associated SNPs were in intron 3 of BNC2, which encodes a zinc finger transcription factor, basonuclin-2. Expression quantitative trait loci data suggested that the associated SNPs have the potential to regulate the BNC2 transcriptional activity and that the susceptibility alleles increase BNC2 expression. We identified a functional SNP, rs10738445 in BNC2, whose susceptibility allele showed both higher binding to a transcription factor, YY1 (yin and yang 1), and higher BNC2 enhancer activity than the non-susceptibility allele. BNC2 overexpression produced body curvature in developing zebrafish in a gene-dosage-dependent manner. Our results suggest that increased BNC2 expression is implicated in the etiology of AIS.
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Affiliation(s)
- Yoji Ogura
- Laboratory of Bone and Joint Diseases, Center for Integrative Sciences, RIKEN, Tokyo 108-8639, Japan; Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Ikuyo Kou
- Laboratory of Bone and Joint Diseases, Center for Integrative Sciences, RIKEN, Tokyo 108-8639, Japan
| | - Shigenori Miura
- Department of Cellular Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Atsushi Takahashi
- Laboratory for Statistical Analysis, Center for Integrative Medical Sciences, RIKEN, Yokohama 230-0045, Japan
| | - Leilei Xu
- Department of Spine Surgery, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing 210008, China
| | - Kazuki Takeda
- Laboratory of Bone and Joint Diseases, Center for Integrative Sciences, RIKEN, Tokyo 108-8639, Japan; Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Yohei Takahashi
- Laboratory of Bone and Joint Diseases, Center for Integrative Sciences, RIKEN, Tokyo 108-8639, Japan; Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Katsuki Kono
- Department of Orthopaedic Surgery, Eiju General Hospital, Tokyo 110-8645, Japan
| | - Noriaki Kawakami
- Department of Orthopaedic Surgery, Meijo Hospital, Nagoya 460-0001, Japan
| | - Koki Uno
- Department of Orthopaedic Surgery, Kobe Medical Center, National Hospital Organization, Kobe 654-0155, Japan
| | - Manabu Ito
- Department of Advanced Medicine for Spine and Spinal Cord Disorders, Graduate School of Medicine, Hokkaido University, Sapporo 060-8648, Japan
| | - Shohei Minami
- Department of Orthopaedic Surgery, Seirei Sakura Citizen Hospital, Sakura 285-8765, Japan
| | - Ikuho Yonezawa
- Department of Orthopaedic Surgery, School of Medicine, Juntendo University Tokyo 113-8431, Japan
| | - Haruhisa Yanagida
- Department of Orthopaedic Surgery, Fukuoka Children's Hospital, Fukuoka 810-0063, Japan
| | - Hiroshi Taneichi
- Department of Orthopaedic Surgery, School of Medicine, Dokkyo Medical University, Tochigi 321-0293, Japan
| | - Zezhang Zhu
- Department of Spine Surgery, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing 210008, China
| | - Taichi Tsuji
- Department of Orthopaedic Surgery, Meijo Hospital, Nagoya 460-0001, Japan
| | - Teppei Suzuki
- Department of Orthopaedic Surgery, Kobe Medical Center, National Hospital Organization, Kobe 654-0155, Japan
| | - Hideki Sudo
- Department of Advanced Medicine for Spine and Spinal Cord Disorders, Graduate School of Medicine, Hokkaido University, Sapporo 060-8648, Japan
| | - Toshiaki Kotani
- Department of Orthopaedic Surgery, Seirei Sakura Citizen Hospital, Sakura 285-8765, Japan
| | - Kota Watanabe
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Naobumi Hosogane
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Eijiro Okada
- Department of Orthopaedic Surgery, Saiseikai Central Hospital, Tokyo 108-0073, Japan
| | - Aritoshi Iida
- Laboratory of Bone and Joint Diseases, Center for Integrative Sciences, RIKEN, Tokyo 108-8639, Japan
| | - Masahiro Nakajima
- Laboratory of Bone and Joint Diseases, Center for Integrative Sciences, RIKEN, Tokyo 108-8639, Japan
| | - Akihiro Sudo
- Department of Orthopaedic Surgery, School of Medicine, Mie University, Tsu 514-8507, Japan
| | - Kazuhiro Chiba
- Department of Orthopaedic Surgery, Kitasato University Kitasato Institute Hospital, Tokyo 108-8642, Japan
| | - Yuji Hiraki
- Department of Cellular Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Yoshiaki Toyama
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Yong Qiu
- Department of Spine Surgery, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing 210008, China
| | - Chisa Shukunami
- Department of Molecular Biology and Biochemistry, Division of Basic Life Sciences, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Yoichiro Kamatani
- Laboratory for Statistical Analysis, Center for Integrative Medical Sciences, RIKEN, Yokohama 230-0045, Japan
| | - Michiaki Kubo
- Laboratory for Genotyping Development, Center for Integrative Medical Sciences, RIKEN, Yokohama 230-0045, Japan
| | - Morio Matsumoto
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Shiro Ikegawa
- Laboratory of Bone and Joint Diseases, Center for Integrative Sciences, RIKEN, Tokyo 108-8639, Japan.
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Vavken P, Ganal-Antonio AKB, Quidde J, Shen FH, Chapman JR, Samartzis D. Fundamentals of Clinical Outcomes Assessment for Spinal Disorders: Clinical Outcome Instruments and Applications. Global Spine J 2015. [PMID: 26225283 PMCID: PMC4516739 DOI: 10.1055/s-0034-1396046] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Study Design A broad narrative review. Objectives Outcome assessment in spinal disorders is imperative to help monitor the safety and efficacy of the treatment in an effort to change the clinical practice and improve patient outcomes. The following article, part two of a two-part series, discusses the various outcome tools and instruments utilized to address spinal disorders and their management. Methods A thorough review of the peer-reviewed literature was performed, irrespective of language, addressing outcome research, instruments and tools, and applications. Results Numerous articles addressing the development and implementation of health-related quality-of-life, neck and low back pain, overall pain, spinal deformity, and other condition-specific outcome instruments have been reported. Their applications in the context of the clinical trial studies, the economic analyses, and overall evidence-based orthopedics have been noted. Additional issues regarding the problems and potential sources of bias utilizing outcomes scales and the concept of minimally clinically important difference were discussed. Conclusion Continuing research needs to assess the outcome instruments and tools used in the clinical outcome assessment for spinal disorders. Understanding the fundamental principles in spinal outcome assessment may also advance the field of "personalized spine care."
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Affiliation(s)
- Patrick Vavken
- Department of Orthopaedic Surgery, Boston Children's Hospital, Harvard University Medical School, Boston, Massachusetts, United States ; Harvard Center for Population and Development Studies, Harvard School of Public Health, Boston, Massachusetts, United States ; Department of Orthopedic Surgery, University of Basel, Basel, Switzerland
| | | | - Julia Quidde
- Department of Orthopedic Surgery, University of Basel, Basel, Switzerland
| | - Francis H Shen
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, United States
| | - Jens R Chapman
- Swedish Neuroscience Institute, Swedish Medical Center, Seattle, Washington, United States
| | - Dino Samartzis
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China ; The Laboratory and Clinical Research Institute for Pain, The University of Hong Kong, Pokfulam, Hong Kong, SAR, China
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Investigation of the 53 Markers in a DNA-Based Prognostic Test Revealing New Predisposition Genes for Adolescent Idiopathic Scoliosis. Spine (Phila Pa 1976) 2015; 40:1086-91. [PMID: 25811265 DOI: 10.1097/brs.0000000000000900] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A genetic association study of 53 single nucleotide polymorphisms (SNPs) with adolescent idiopathic scoliosis (AIS). OBJECTIVE To explore new predisposition genes of AIS in Chinese Han population SUMMARY OF BACKGROUND DATA.: A panel of 53 SNPs were reported to be associated with curve severity of AIS. However, there is still a lack of knowledge concerning the association of these SNPs with the susceptibility of AIS in the Chinese Han population. METHODS A gene-based association study was conducted by genotyping the 53 SNPs of a prognostic test. DNA samples of 990 female patients with AIS and 1188 age-matched healthy controls were analyzed using the polymerase chain reaction-based Invader assay. The χ test was carried out to compare the differences of genotype and allele distributions between patients with AIS and healthy controls. RESULTS A total of 4 SNPs were found to present significant differences in allele or genotype frequencies between the 2 groups. Compared with normal controls, patients were found to have significantly higher allele G of rs12618119 and allele A of rs9945359. Besides, patients were found to have significantly lower allele T of rs4661748 and allele C of rs4782809 than the normal controls. BIN1, CDH13, SETBP1, and SPATA21 genes could be associated with the susceptibility of AIS. CONCLUSION Four new predisposition genes of AIS were identified on the basis of a large-scale case-control study. Putting all these findings together, it suggests that AIS is a multifactorial disease possibly involving different pathways such as development of central neural system and bone formation. Further studies exploring more predisposition gene are essential to illustrate the etiology of AIS and to guide the prevention or prognosis of the disease. LEVEL OF EVIDENCE 3.
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Zhu Z, Xu L, Qiu Y. Current progress in genetic research of adolescent idiopathic scoliosis. ANNALS OF TRANSLATIONAL MEDICINE 2015; 3:S19. [PMID: 26046064 DOI: 10.3978/j.issn.2305-5839.2015.02.04] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 02/02/2015] [Indexed: 11/14/2022]
Abstract
Previous genetic linkage analysis and candidate gene association analysis have unveiled dozens of variants associated with the development of adolescent idiopathic scoliosis (AIS), which however can seldom be replicated in different ethnics. Recently, two genome-wide association studies of AIS performed in Japan revealed that ladybird homeobox 1 (LBX1) gene and G protein-coupled receptor 126 (GPR126) gene could play a role in the etiopathogenesis of the disease. Since the association between these two genes and AIS were successfully validated in the Caucasian and the Chinese population, LBX1 gene and GPR126 gene were the most reliable genetic variants underling the development of AIS.
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Affiliation(s)
- Zezhang Zhu
- Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Leilei Xu
- Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Yong Qiu
- Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
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Chettier R, Nelson L, Ogilvie JW, Albertsen HM, Ward K. Haplotypes at LBX1 have distinct inheritance patterns with opposite effects in adolescent idiopathic scoliosis. PLoS One 2015; 10:e0117708. [PMID: 25675428 PMCID: PMC4326419 DOI: 10.1371/journal.pone.0117708] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 12/30/2014] [Indexed: 11/19/2022] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is a clinically significant disorder with high heritability that affects 2–4% of the population. Genome-wide association studies have identified LBX1 as a strong susceptibility locus for AIS in Asian and Caucasian populations. Here we further dissect the genetic association with AIS in a Caucasian population. To identify genetic markers associated with AIS we employed a genome-wide association study (GWAS) design comparing 620 female Caucasian patients who developed idiopathic scoliosis during adolescence with 1,287 ethnically matched females who had normal spinal curves by skeletal maturity. The genomic region around LBX1 was imputed and haplotypes investigated for genetic signals under different inheritance models. The strongest signal was identified upstream of LBX1 (rs11190878, Ptrend = 4.18×10-9, OR = 0.63[0.54–0.74]). None of the remaining SNPs pass the genome-wide significance threshold. We found rs11190870, downstream of LBX1 and previously associated with AIS in Asian populations, to be in modest linkage disequilibrium (LD) with rs11190878 (r2 = 0.40, D' = 0.81). Haplotype analysis shows that rs11190870 and rs11190878 track a single risk factor that resides on the ancestral haplotype and is shared across ethnic groups. We identify six haplotypes at the LBX1 locus including two strongly associated haplotypes; a recessive risk haplotype (TTA, Controlfreq = 0.52, P = 1.25×10-9, OR = 1.56), and a co-dominant protective haplotype (CCG, Controlfreq = 0.28, P = 2.75×10-7, OR = 0.65). Together the association signals from LBX1 explain 1.4% of phenotypic variance. Our results identify two clinically relevant haplotypes in the LBX1-region with opposite effects on AIS risk. The study demonstrates the utility of haplotypes over un-phased SNPs for individualized risk assessment by more strongly delineating individuals at risk for AIS without compromising the effect size.
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Affiliation(s)
- Rakesh Chettier
- Affiliated Genetics, Inc., Salt Lake City, Utah, 84109, United States of America
| | - Lesa Nelson
- Affiliated Genetics, Inc., Salt Lake City, Utah, 84109, United States of America
| | - James W. Ogilvie
- Lucina Foundation, Salt Lake City, Utah, 84109, United States of America
| | - Hans M. Albertsen
- Juneau Biosciences, LLC., Salt Lake City, Utah, 84109, United States of America
| | - Kenneth Ward
- Affiliated Genetics, Inc., Salt Lake City, Utah, 84109, United States of America
- Juneau Biosciences, LLC., Salt Lake City, Utah, 84109, United States of America
- * E-mail:
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Chen S, Zhao L, Roffey DM, Phan P, Wai EK. Association of rs11190870 near LBX1 with adolescent idiopathic scoliosis in East Asians: a systematic review and meta-analysis. Spine J 2014; 14:2968-75. [PMID: 24878781 DOI: 10.1016/j.spinee.2014.05.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 03/27/2014] [Accepted: 05/19/2014] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT The rs11190870 single nucleotide polymorphism in the 3'-flanking region of the LBX1 gene has been implicated in the etiology of adolescent idiopathic scoliosis (AIS). A thorough appraisal of the evidence supporting this association has not been previously attempted. PURPOSE To provide a comprehensive assessment and synthesis of the currently available evidence on the association between rs11190870 and AIS. STUDY DESIGN A systematic review and meta-analysis. METHODS This review followed the Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines. PubMed (MEDLINE), EMBASE, Scopus, and HuGE Literature Finder databases were systematically searched through November 2013 to identify relevant studies following a sensitive strategy. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were estimated using the fixed-effect inverse variance model for allelic (T vs. C) and genotypic comparisons. RESULTS Meta-analysis of four studies conducted in East Asian populations (n=3,215 AIS cases and n=15,347 controls) found a highly statistically significant and robust association between rs11190870 and AIS. Comparison of summary ORs indicated a codominant model effect of the T allele. Carriers of the TC and TT genotypes were 69% (OR=1.69, 95% CI: 1.48-1.94, p<.001) and 162% (OR=2.62, 95% CI: 2.28-3.02, p<.001), respectively, more likely to have AIS compared with carriers of the CC genotype. CONCLUSIONS Based on a comprehensive analysis of the currently available evidence, rs11190870 is likely a susceptibility variant for AIS in East Asians. Further investigation of this association is necessary in other populations.
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Affiliation(s)
- Suzan Chen
- University of Ottawa Spine Program, The Ottawa Hospital, 1053 Carling Ave., Ottawa, Ontario, Canada, K1Y 4E9.
| | - Linlu Zhao
- Department of Chronic Disease Epidemiology, Yale School of Public Health, 60 College St., New Haven, CT, USA, 06510
| | - Darren M Roffey
- University of Ottawa Spine Program, The Ottawa Hospital, 1053 Carling Ave., Ottawa, Ontario, Canada, K1Y 4E9; Clinical Epidemiology Program, Ottawa Hospital Research Institute, 725 Parkdale Ave., Ottawa, Ontario, Canada, K1Y 4E9
| | - Philippe Phan
- University of Ottawa Spine Program, The Ottawa Hospital, 1053 Carling Ave., Ottawa, Ontario, Canada, K1Y 4E9; Division of Orthopaedic Surgery, Department of Surgery, University of Ottawa, 1053 Carling Ave., Ottawa, Ontario, Canada, K1Y 4E9
| | - Eugene K Wai
- University of Ottawa Spine Program, The Ottawa Hospital, 1053 Carling Ave., Ottawa, Ontario, Canada, K1Y 4E9; Clinical Epidemiology Program, Ottawa Hospital Research Institute, 725 Parkdale Ave., Ottawa, Ontario, Canada, K1Y 4E9; Division of Orthopaedic Surgery, Department of Surgery, University of Ottawa, 1053 Carling Ave., Ottawa, Ontario, Canada, K1Y 4E9
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Letter. Spine (Phila Pa 1976) 2014; 39:1731-2. [PMID: 25077903 DOI: 10.1097/brs.0000000000000528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Zhu F, Qiao J, Qiu X, Xu L, Liu Z, Zhu Z, Qian B, Sun X, Qiu Y. Lack of association between suppressor of cytokine signaling-3 gene polymorphism and susceptibility and curve severity of adolescent idiopathic scoliosis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2014; 23:2432-6. [DOI: 10.1007/s00586-014-3452-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 07/01/2014] [Accepted: 07/02/2014] [Indexed: 10/25/2022]
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Association Between rs11190870 Polymorphism Near LBX1 and Susceptibility to Adolescent Idiopathic Scoliosis in East Asian Population: A Genetic Meta-Analysis. Spine (Phila Pa 1976) 2014; 39:862-869. [PMID: 24583738 DOI: 10.1097/brs.0000000000000303] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Meta-analysis to collect all the relevant studies to date to further investigate whether or not the rs11190870 polymorphism is associated with susceptibility to adolescent idiopathic scoliosis (AIS) in East Asian population. OBJECTIVE To investigate whether or not the rs11190870 polymorphism is associated with susceptibility to AIS in East Asian population. SUMMARY OF BACKGROUND DATA To date, the single nucleotide polymorphism rs11190870 was identified as the most significant common variant in Japanese females. Three association studies conducted in Chinese Han population from Hong Kong, Yangtze River region, and Southern region of mainland China replicated the association between AIS and rs1190870. However, there is limited published data about the association of rs11190870 with AIS in East Asian population. METHODS A systematic search of all relevant studies published through August 2013 was conducted using the MEDLINE, EMBASE, OVID, and ScienceDirect. Single nucleotide polymorphism of rs11190870 was evaluated. The included studies were assessed in the analysis of the following allele model: T allele versus C allele for the allele-level comparison; (b) TC + TT versus CC for dominant model of T allele; (c) TT versus TC + CC for recessive model of T allele, and (d) TT versus CC for extreme genotype. RESULTS Four studies with 8415 total participants (2889 patients with AIS and 5526 controls), who were all East Asian population, were eligible for inclusion. We searched for genotypes T allele versus C allele, TT versus TC + CC, TC + TT versus CC, and TT versus CC in a fixed/random-effects model. The effect summary odds ratios and 95 % confidence intervals were obtained, which shows significant association between rs11190870 and AIS in East Asian populations (all genetic models P < 0.001). Subgroup analyses were conducted according to sex. The results showed a significant association between rs11190870 and AIS in female (all genetic models, P < 0.001) but not in male (all genetic models, P > 0.05). CONCLUSION The present meta-analysis demonstrated that the T allele of single nucleotide polymorphism rs11190870 may be a major susceptibility locus in the East Asian population with AIS, especially in female. LEVEL OF EVIDENCE 1.
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Londono D, Kou I, Johnson TA, Sharma S, Ogura Y, Tsunoda T, Takahashi A, Matsumoto M, Herring JA, Lam TP, Wang X, Tam EMS, Song YQ, Fan YH, Chan D, Cheah KSE, Qiu X, Jiang H, Huang D, Su P, Sham P, Cheung KMC, Luk KDK, Gordon D, Qiu Y, Cheng J, Tang N, Ikegawa S, Wise CA. A meta-analysis identifies adolescent idiopathic scoliosis association withLBX1locus in multiple ethnic groups. J Med Genet 2014; 51:401-6. [DOI: 10.1136/jmedgenet-2013-102067] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ultrastructure of Intervertebral Disc and Vertebra-Disc Junctions Zones as a Link in Etiopathogenesis of Idiopathic Scoliosis. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/850594] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Background Context. There is no general accepted theory on the etiology of idiopathic scoliosis (IS). An important role of the vertebrae endplate physes (VEPh) and intervertebral discs (IVD) in spinal curve progression is acknowledged, but ultrastructural mechanisms are not well understood. Purpose. To analyze the current literature on ultrastructural characteristics of VEPh and IVD in the context of IS etiology. Study Design/Setting. A literature review. Results. There is strong evidence for multifactorial etiology of IS. Early wedging of vertebra bodies is likely due to laterally directed appositional bone growth at the concave side, caused by a combination of increased cell proliferation at the vertebrae endplate and altered mechanical properties of the outer annulus fibrosus of the adjacent IVD. Genetic defects in bending proteins necessary for IVD lamellar organization underlie altered mechanical properties. Asymmetrical ligaments, muscular stretch, and spine instability may also play roles in curve formation. Conclusions. Development of a reliable, cost effective method for identifying patients at high risk for curve progression is needed and could lead to a paradigm shift in treatment options. Unnecessary anxiety, bracing, and radiation could potentially be minimized and high risk patient could receive surgery earlier, rendering better outcomes with fewer fused segments needed to mitigate curve progression.
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Paria N, Copley LA, Herring JA, Kim HKW, Richards BS, Sucato DJ, Rios JJ, Wise CA. The impact of large-scale genomic methods in orthopaedic disorders: insights from genome-wide association studies. J Bone Joint Surg Am 2014; 96:e38. [PMID: 24599210 DOI: 10.2106/jbjs.m.00398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Nandina Paria
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
| | - Lawson A Copley
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
| | - John A Herring
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
| | - Harry K W Kim
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
| | - B Stephens Richards
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
| | - Daniel J Sucato
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
| | - Jonathan J Rios
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
| | - Carol A Wise
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research (N.P., H.K.W.K., J.J.R., and C.A.W.) and Department of Orthopaedics (L.A.C., J.A.H., B.S.R., and D.J.S.), Texas Scottish Rite Hospital for Children, 2222 Welborn Street, Dallas, TX 75219. E-
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Yagi M, Machida M, Asazuma T. Pathogenesis of Adolescent Idiopathic Scoliosis. JBJS Rev 2014; 2:01874474-201401000-00004. [DOI: 10.2106/jbjs.rev.m.00037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Yee A, Song YQ, Chan D, Cheung KMC. Understanding the Basis of Genetic Studies: Adolescent Idiopathic Scoliosis as an Example. Spine Deform 2014; 2:1-9. [PMID: 27927437 DOI: 10.1016/j.jspd.2013.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 08/24/2013] [Accepted: 09/01/2013] [Indexed: 12/31/2022]
Abstract
STUDY DESIGN A review of the general concepts of genetics studies with specific reference to adolescent idiopathic scoliosis (AIS). OBJECTIVES To equip the average spine surgeon with the vocabulary and understanding needed to understand the genetics of scoliosis and the approaches used to identify risk genes. SUMMARY OF BACKGROUND DATA Adolescent idiopathic scoliosis is a multifactorial disease. Increasing evidence from families and monozygotic twins suggests the involvement of genetic factors. An estimation of heritability also indicates a strong influence of genetics on the disease. Increasing focus has been placed on identifying genes and genetic variants associated with AIS. REVIEW This is a review of genes and genetic variations, the phenotype definition of AIS in genetics studies, concepts and approaches to identifying associated genes, and the evaluation of results. Different types of genetic variations are present in the genome. These variations may modulate the expression or function of protein products, which in turn alter individuals' susceptibility to disease. Identifying the variants related to AIS requires an objective and clearly defined phenotype, among which the Cobb angle is commonly used. The phenotype helps classify subjects into cases and controls. By selecting candidate genes of growth factors and hormonal receptors, which are speculated to be involved in the mechanism of disease, the variants within these genes were compared between cases and controls to identify any differences. Another approach was to use large families and inspect the co-segregation of variants and phenotypes. Recently, arrays covering the variants of the whole genome were developed and assist in high-throughput screening for associated genes. CONCLUSIONS Genetic factors have an important role in AIS. Deciphering the genes and genetic variants associated with AIS can improve our understanding of the mechanisms of the disease, as well as assist in designing treatment methods and preventive measures.
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Affiliation(s)
- Anita Yee
- Department of Biochemistry, University of Hong Kong, 3/F Laboratory Block, LKS Faculty of Medicine, 21 Sassoon Road, Pokfulam, Hong Kong, China
| | - You-Qiang Song
- Department of Biochemistry, University of Hong Kong, 3/F Laboratory Block, LKS Faculty of Medicine, 21 Sassoon Road, Pokfulam, Hong Kong, China
| | - Danny Chan
- Department of Biochemistry, University of Hong Kong, 3/F Laboratory Block, LKS Faculty of Medicine, 21 Sassoon Road, Pokfulam, Hong Kong, China
| | - Kenneth M C Cheung
- Department of Orthopaedics and Traumatology, 5/F Professorial Block, Queen Mary Hospital, University of Hong Kong, Pokfulam, Hong Kong, China.
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