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Perea‐Cabrera M, Granados‐Riveron JT, Segura‐Stanford B, Moreno‐Vargas LM, Prada‐Gracia D, Moran‐Espinosa MC, Erdmenger J, Diaz‐Garcia H, Sánchez‐Urbina R. Opitz GBBB syndrome with total anomalous pulmonary venous connection: A new MID1 gene variant. Mol Genet Genomic Med 2023; 11:e2234. [PMID: 37498300 PMCID: PMC10496055 DOI: 10.1002/mgg3.2234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 06/12/2023] [Accepted: 06/28/2023] [Indexed: 07/28/2023] Open
Abstract
BACKGROUND Opitz GBBB syndrome (GBBB) is an X-linked disease characterized by midline defects, including congenital heart defects. We present our diagnostic approach to the identification of GBBB in a consanguineous family in which two males siblings were concordant for a total anomalous connection of pulmonary veins and minor facial dysmorphias. METHODS Targeted exome sequencing analysis of a 380-gene panel associated with cardiovascular disease was performed on the propositus. Interpretative analysis of the exome results was conducted, and 3D models of the protein changes were generated. RESULTS We identified a NM_000381.4:c.608G>A;p.(Arg203Gln) change in MID1, affecting the conformation of the B-box 2 domain of the protein, with a zinc finger structure and associated protein interactions. This clinical phenotype is consistent with GBBB; however, the type of congenital heart disease observed in this case has not been previously reported. CONCLUSION A new likely pathogenic variant on MID1 c.608G>A was found to be associated with Opitz GBBB syndrome.
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Affiliation(s)
- Maryangel Perea‐Cabrera
- Centro de Investigación en Malformaciones CongénitasHospital Infantil de México Federico GómezMexico CityMexico
| | - Javier T. Granados‐Riveron
- Centro de Investigación en Malformaciones CongénitasHospital Infantil de México Federico GómezMexico CityMexico
| | | | - Liliana M. Moreno‐Vargas
- Unidad de Investigación en Biología Computacional y Diseño de FármacosHospital Infantil de México Federico GómezCiudad de MéxicoMexico
| | - Diego Prada‐Gracia
- Unidad de Investigación en Biología Computacional y Diseño de FármacosHospital Infantil de México Federico GómezCiudad de MéxicoMexico
| | - Mari C. Moran‐Espinosa
- Centro de Investigación en Malformaciones CongénitasHospital Infantil de México Federico GómezMexico CityMexico
| | - Julio Erdmenger
- Departamento de CardiologíaHospital Infantil de México Federico GómezMexico CityMexico
| | - Hector Diaz‐Garcia
- Centro de Investigación en Malformaciones CongénitasHospital Infantil de México Federico GómezMexico CityMexico
| | - Rocío Sánchez‐Urbina
- Centro de Investigación en Malformaciones CongénitasHospital Infantil de México Federico GómezMexico CityMexico
- Escuela Superior de Medicina del Instituto Politécnico NacionalMexico CityMexico
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Migliore C, Vendramin A, McKee S, Prontera P, Faravelli F, Sachdev R, Dias P, Mascaro M, Licastro D, Meroni G. SPECC1L Mutations Are Not Common in Sporadic Cases of Opitz G/BBB Syndrome. Genes (Basel) 2022; 13:genes13020252. [PMID: 35205294 PMCID: PMC8871657 DOI: 10.3390/genes13020252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/26/2022] [Accepted: 01/26/2022] [Indexed: 12/31/2022] Open
Abstract
Opitz G/BBB syndrome (OS) is a rare genetic developmental condition characterized by congenital defects along the midline of the body. The main clinical signs are represented by hypertelorism, laryngo–tracheo–esophageal defects and hypospadias. The X-linked form of the disease is associated with mutations in the MID1 gene located in Xp22 whereas mutations in the SPECC1L gene in 22q11 have been linked to few cases of the autosomal dominant form of this disorder, as well as to other genetic syndromes. In this study, we have undertaken a mutation screening of the SPECC1L gene in samples of sporadic OS cases in which mutations in the MID1 gene were excluded. The heterozygous missense variants identified are already reported in variant databases raising the issue of their pathogenetic meaning. Recently, it was reported that some clinical manifestations peculiar to OS signs are not observed in patients carrying mutations in the SPECC1L gene, leading to the proposal of the designation of ‘SPECC1L syndrome’ to refer to this disorder. Our study confirms that patients with diagnosis of OS, mainly characterized by the presence of hypospadias and laryngo–tracheo–esophageal defects, do not carry pathogenic SPECC1L mutations. In addition, SPECC1L syndrome-associated mutations are clustered in two specific domains of the protein, whereas the missense variants detected in our work lies elsewhere and the impact of these variants in the function of this protein is difficult to ascertain with the current knowledge and will require further investigations. Nonetheless, our study provides further insight into the SPECC1L syndrome classification.
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Affiliation(s)
- Chiara Migliore
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy; (C.M.); (M.M.)
| | - Anna Vendramin
- Genomic and Bioinformatic Lab., Cluster in Biomedicine, S.c.r.l., 34149 Trieste, Italy;
| | - Shane McKee
- Northern Ireland Regional Genetics Service, Belfast City Hospital, Belfast BT9 7AB, UK;
| | - Paolo Prontera
- Medical Genetics Unit, University and Hospital of Perugia, 06129 Perugia, Italy;
| | - Francesca Faravelli
- The North East Thames Regional Genetics Service, Great Ormond Street Hospital, London WC1N 3JH, UK;
| | - Rani Sachdev
- St George and Sydney Children’s Hospital, Randwick, Sydney, NSW 2031, Australia;
| | - Patricia Dias
- Serviço de Genética Médica, Hospital de Santa Maria, Centro Universitário Hospitalar Lisboa Norte, 1649-028 Lisbon, Portugal;
| | - Martina Mascaro
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy; (C.M.); (M.M.)
| | | | - Germana Meroni
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy; (C.M.); (M.M.)
- Correspondence: ; Tel.: +39-040-5588679
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3
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Maia N, Nabais Sá MJ, Tkachenko N, Soares G, Marques I, Rodrigues B, Fortuna AM, Santos R, de Brouwer APM, Jorge P. Two Novel Pathogenic MID1 Variants and Genotype-Phenotype Correlation Reanalysis in X-Linked Opitz G/BBB Syndrome. Mol Syndromol 2017; 9:45-51. [PMID: 29456483 DOI: 10.1159/000479177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2017] [Indexed: 01/15/2023] Open
Abstract
X-linked Opitz G/BBB syndrome (XLOS) is a multisystemic congenital condition, caused by mutations in the midline-1 gene (MID1), characterized by a large inter- and intrafamilial phenotypic variability and often associated with intellectual disability (ID). We report clinical, genetic, and molecular findings in 4 patients with typical XLOS dysmorphic features belonging to 2 unrelated families. Two novel pathogenic loss-of-function MID1 variants, a maternally inherited c.1656del and a de novo c.1215_1228dup, were identified. Subsequently, we performed a genotype-phenotype analysis using data from 91 male XLOS patients. To test the mutation impact on the phenotype; the type of mutation, the MID1-impaired domain and function were compared with the presence of each of the major clinical features (hypertelorism, clefts of the lip and/or palate, laryngo-tracheo-esophageal abnormalities, hypospadias and ID) and minor clinical features (brain, heart, and anal defects). No statistically significant correlation was found with these features. Further investigations, as well as exhaustive and unequivocal phenotyping, may be required to improve our knowledge of the biological mechanisms underlying this syndrome and to provide more adequate disease management.
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Affiliation(s)
- Nuno Maia
- Unidade de Genética Molecular, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal.,Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Maria J Nabais Sá
- Serviço de Genética Médica, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal.,Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Nataliya Tkachenko
- Serviço de Genética Médica, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal
| | - Gabriela Soares
- Serviço de Genética Médica, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal
| | - Isabel Marques
- Unidade de Genética Molecular, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal.,Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Bárbara Rodrigues
- Unidade de Genética Molecular, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal.,Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal.,Departamento de Biologia, Universidade de Aveiro, Aveiro, Portugal
| | - Ana M Fortuna
- Serviço de Genética Médica, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal.,Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Rosário Santos
- Unidade de Genética Molecular, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal.,Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Arjan P M de Brouwer
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Paula Jorge
- Unidade de Genética Molecular, Centro de Genética Médica Doutor Jacinto de Magalhães (CGMJM), Centro Hospitalar do Porto, EPE, Porto, Portugal.,Unidade Multidisciplinar de Investigação Biomédica (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
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4
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Giovani ÉM, Marinho KCT, Andia-Merlin R. Dental treatment of a patient with Opitz G/BBB syndrome. SPECIAL CARE IN DENTISTRY 2016; 37:102-106. [PMID: 27642052 DOI: 10.1111/scd.12200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Opitz G/BBB syndrome is a genetic condition characterized by several abnormalities along the midline of the body, such as hypertelorism, craniofacial deformities, and dysphagia. This study reports the clinical features of Optiz syndrome and its importance in the knowledge of patients who are developmentally challenged as a whole, in order to establish adequate dental treatment for a certain clinical case. A 19-year-old patient visited the Paulista University for a dental treatment. The extraoral examination revealed ocular hypertelorism (wide-spaced eyes), oblique eyelids, epicanthus, low-set cart, and intellectual disability. During the intraoral examination, large caries lesions were observed surrounding the braces of the fixed orthodontic appliance and poor oral hygiene. Preventive and restorative treatments were carried out. It was concluded that the knowledge of patients with special needs as a whole is mandatory for an adequate dental treatment. This is a case report that highlights the importance of dentist and interdisciplinary care attendance for all patient systems, the examination and analyses should not be restricted to the oral cavity.
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Affiliation(s)
- Élcio Magdalena Giovani
- Chairman, Professor, Integrated Clinic Discipline, Coordinator of Center for Studies and Special Service for Patients, Professor, Postgraduate Dentistry Courses, UNIP, São Paulo, SP, Brazil
| | | | - Ruth Andia-Merlin
- Associate Professor, Integrated Clinic and Center for Studies and Special Service for Patients, UNIP, São Paulo, SP, Brazil
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5
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Du H, Wu K, Didoronkute A, Levy MVA, Todi N, Shchelokova A, Massiah MA. MID1 catalyzes the ubiquitination of protein phosphatase 2A and mutations within its Bbox1 domain disrupt polyubiquitination of alpha4 but not of PP2Ac. PLoS One 2014; 9:e107428. [PMID: 25207814 PMCID: PMC4160256 DOI: 10.1371/journal.pone.0107428] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 08/14/2014] [Indexed: 01/05/2023] Open
Abstract
MID1 is a microtubule-associated protein that belongs to the TRIM family. MID1 functions as an ubiquitin E3 ligase, and recently was shown to catalyze the polyubiquitination of, alpha4, a protein regulator of protein phosphatase 2A (PP2A). It has been hypothesized that MID1 regulates PP2A, requiring the intermediary interaction with alpha4. Here we report that MID1 catalyzes the in vitro ubiquitination of the catalytic subunit of PP2A (PP2Ac) in the absence of alpha4. In the presence of alpha4, the level of PP2Ac ubiquitination is reduced. Using the MID1 RING-Bbox1-Bbox2 (RB1B2) construct containing the E3 ligase domains, we investigate the functional effects of mutations within the Bbox domains that are identified in patients with X-linked Opitz G syndrome (XLOS). The RB1B2 proteins harboring the C142S, C145T, A130V/T mutations within the Bbox1 domain and C195F mutation within the Bbox2 domain maintain auto-polyubiquitination activity. Qualitatively, the RB1B2 proteins containing these mutations are able to catalyze the ubiquitination of PP2Ac. In contrast, the RB1B2 proteins with mutations within the Bbox1 domain are unable to catalyze the polyubiquitination of alpha4. These results suggest that unregulated alpha4 may be the direct consequence of these natural mutations in the Bbox1 domain of MID1, and hence alpha4 could play a greater role to account for the increased amount of PP2A observed in XLOS-derived fibroblasts.
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Affiliation(s)
- Haijuan Du
- Department of Chemistry, George Washington University, Washington, District of Columbia, United States of America
| | - Kuanlin Wu
- Department of Chemistry, George Washington University, Washington, District of Columbia, United States of America
| | - Alma Didoronkute
- Department of Chemistry, George Washington University, Washington, District of Columbia, United States of America
| | - Marcus V. A. Levy
- Department of Chemistry, George Washington University, Washington, District of Columbia, United States of America
| | - Nimish Todi
- Department of Chemistry, George Washington University, Washington, District of Columbia, United States of America
| | - Anna Shchelokova
- Department of Chemistry, George Washington University, Washington, District of Columbia, United States of America
| | - Michael A. Massiah
- Department of Chemistry, George Washington University, Washington, District of Columbia, United States of America
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6
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Ji X, Xing Y, Xu Y, Liu Y, Chen Y, Tao J, Xiao B. A novel mutation in MID1 in a patient with X-linked Opitz G/BBB syndrome. Gene 2014; 537:140-2. [PMID: 24374473 DOI: 10.1016/j.gene.2013.12.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/09/2013] [Accepted: 12/10/2013] [Indexed: 11/22/2022]
Abstract
Opitz G/BBB syndrome (OS) is a genetically heterogeneous disease. We report on an OS patient with a novel inherited mutation in MID1. Metaphase analysis showed a normal male karyotype. Array CGH revealed a maternally inherited duplication at Xp22.31 (6,467,203-7,992,261, hg18), the size was estimated to 1.5Mb. Sequence analysis of the MID1 coding region revealed a novel missense mutation in exon 8 (c.1561C>T/p. R521C) which resulted in an ammonia acid substitution (R521C) in the PRX domain of the MID1 protein. The mutation was inherited from unaffected grandmother and mildly affected mother. Prenatal diagnosis was performed for the third pregnancy after identification of the causative mutation in the family. The third fetus was found to be a female carrier. Postnatal follow-up at 2-month-old showed normal phenotype. In conclusion, we reported a familial OS patient with a novel mutation in exon 8 which provided another evidence for that mutation clustered in C-terminal domain of MID1. The newly identified mutation in our patient expands mutation spectrum in MID1 gene.
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Affiliation(s)
- Xing Ji
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China; Shanghai Institute for Pediatric Research, China
| | - Ya Xing
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China; Shanghai Institute for Pediatric Research, China
| | - Yan Xu
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China; Shanghai Institute for Pediatric Research, China
| | - Yu Liu
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China; Shanghai Institute for Pediatric Research, China
| | - Yingwei Chen
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China; Shanghai Institute for Pediatric Research, China
| | - Jiong Tao
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China; Shanghai Institute for Pediatric Research, China
| | - Bing Xiao
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China; Shanghai Institute for Pediatric Research, China.
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7
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Migliore C, Athanasakis E, Dahoun S, Wonkam A, Lees M, Calabrese O, Connell F, Lynch SA, Izzi C, Pompilii E, Thakur S, van Maarle M, Wilson LC, Meroni G. Complex rearrangement of the exon 6 genomic region among Opitz G/BBB Syndrome MID1 alterations. Eur J Med Genet 2013; 56:404-10. [PMID: 23791568 DOI: 10.1016/j.ejmg.2013.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 05/27/2013] [Indexed: 11/25/2022]
Abstract
Opitz G/BBB Syndrome (OS) is a multiple congenital anomaly disorder characterized by developmental defects of midline structures. The most relevant clinical signs are ocular hypertelorism, hypospadias, cleft lip and palate, laryngo-tracheo-esophageal abnormalities, imperforate anus, and cardiac defects. Developmental delay, intellectual disability and brain abnormalities are also present. The X-linked form of this disorder is caused by mutations in the MID1 gene coding for a member of the tripartite motif family of E3 ubiquitin ligases. Here, we describe 12 novel patients that carry MID1 mutations emphasizing that laryngo-tracheo-esophageal defects are very common in OS patients and, together with hypertelorism and hypospadias, are the most frequent findings among the full spectrum of OS clinical manifestations. Besides missense and nonsense mutations, small insertions and deletions scattered along the entire length of the gene, we found that a consistent number of MID1 alterations are represented by the deletion of single coding exons. Deep characterization of one of these deletions reveals, for the first time within the MID1 gene, a complex rearrangement composed of two deletions, an inversion and a small insertion that may suggest the involvement of concurrent non-homologous mechanisms in the generation of the observed structural variant.
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Affiliation(s)
- Chiara Migliore
- Institute for Maternal and Child Health - IRCCS "Burlo Garofolo", Trieste, Italy
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Zhao Z, Yang L, Ding YQ, Yu Q. Prognostic significance of MID1 expression in colorectal carcinoma. Shijie Huaren Xiaohua Zazhi 2012; 20:113-118. [DOI: 10.11569/wcjd.v20.i2.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To detect the expression of midline 1 (MID1) in human colorectal carcinoma and to assess its prognostic significance.
METHODS: Immunohistochemistry was used to detect the expression of MID1 protein in colorectal carcinoma specimens (n = 109). The relationship between the survival of patients with colorectal cancer and the expression of MID1 was investigated. Survival analyses were performed using the Kaplan-Meier method and Cox regression model.
RESULTS: MID1 expression significantly affected the survival of patients with colorectal carcinoma (P < 0.05). MID1 expression had a significantly negative correlation with lymph node metastasis (r = -0.204, P = 0.034) and depth of invasion (r = -0.223, P = 0.020), but was significantly positively correlated with differentiation degree (r = 0.236, P = 0.014). MID1 expression had no relationship with sex, age or tumor pathologic type. Kaplan-Meier analysis indicated that the 7-year cumulative survival rates for patients with high, medium and low MID1 expression were 69.2%, 45.0% and 30.0%, respectively, and their mean survival time was 91.101 mo ± 6.127 mo, 69.389 mo ± 7.512 mo, 50.358 mo ± 8.091 mo.
CONCLUSION: MID1 expression can be used as a parameter for the judgment of colorectal carcinoma differentiation, invasion and lymph node metastasis, and as a useful prognostic marker in patient with colorectal carcinoma.
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