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JOURNAL ARTICLE
Astrid Brull, Apurva Sarathy, Véronique Bolduc, Grace S Chen, Riley M McCarty, Carsten G Bönnemann
Collagen VI-related dystrophies (COL6-RDs) are a group of severe, congenital-onset muscular dystrophies for which there is no effective causative treatment. Dominant-negative mutations are common in COL6A1 , COL6A2 , and COL6A 3 genes, encoding the collagen α1, α2, and α3 (VI) chains. They act by incorporating into the hierarchical assembly of the three α (VI) chains and consequently produce a dysfunctional collagen VI extracellular matrix, while haploinsufficiency for any of the COL6 genes is not associated with disease...
June 11, 2024: Molecular Therapy. Nucleic Acids
#2
A Reghan Foley, Véronique Bolduc, Fady Guirguis, Sandra Donkervoort, Ying Hu, Rotem Orbach, Riley M McCarty, Apurva Sarathy, Gina Norato, Beryl B Cummings, Monkol Lek, Anna Sarkozy, Russell J Butterfield, Janbernd Kirschner, Andrés Nascimento, Daniel Natera-de Benito, Susana Quijano-Roy, Tanya Stojkovic, Luciano Merlini, Giacomo Comi, Monique Ryan, Denise McDonald, Pinki Munot, Grace Yoon, Edward Leung, Erika Finanger, Meganne E Leach, James Collins, Cuixia Tian, Payam Mohassel, Sarah B Neuhaus, Dimah Saade, Benjamin T Cocanougher, Mary-Lynn Chu, Mena Scavina, Carla Grosmann, Randal Richardson, Brian D Kossak, Sidney M Gospe, Vikram Bhise, Gita Taurina, Baiba Lace, Monica Troncoso, Mordechai Shohat, Adel Shalata, Sophelia H S Chan, Manu Jokela, Johanna Palmio, Göknur Haliloğlu, Cristina Jou, Corine Gartioux, Herimela Solomon-Degefa, Carolin D Freiburg, Alvise Schiavinato, Haiyan Zhou, Sara Aguti, Yoram Nevo, Ichizo Nishino, Cecilia Jimenez-Mallebrera, Shireen R Lamandé, Valérie Allamand, Francesca Gualandi, Alessandra Ferlini, Daniel G MacArthur, Steve D Wilton, Raimund Wagener, Enrico Bertini, Francesco Muntoni, Carsten G Bönnemann
Collagen VI-related dystrophies (COL6-RDs) manifest with a spectrum of clinical phenotypes, ranging from Ullrich congenital muscular dystrophy (UCMD), presenting with prominent congenital symptoms and characterised by progressive muscle weakness, joint contractures and respiratory insufficiency, to Bethlem muscular dystrophy, with milder symptoms typically recognised later and at times resembling a limb girdle muscular dystrophy, and intermediate phenotypes falling between UCMD and Bethlem muscular dystrophy...
March 29, 2024: medRxiv
#3
JOURNAL ARTICLE
Rasha El Sherif, Yoshihiko Saito, Tomonari Awaya, Satoru Noguchi, Ichizo Nishino
OBJECTIVES: Collagen VI-related myopathy spans a clinical continuum from severe Ullrich congenital muscular dystrophy to milder Bethlem myopathy, caused by genetic variants in COL6A1 , COL6A2 , and COL6A3 genes. Our objective was to report a newly identified patient with the pathogenic variants restricted to a polyadenylation signal in the 3'-untranslated region, which have not been reported in hereditary muscle disease. METHODS: We performed clinicopathologic diagnosis and analysis using whole-genome and RNA sequencing...
April 2024: Neurology. Genetics
#4
JOURNAL ARTICLE
Vittoria Cenni, Patrizia Sabatelli, Alberto Di Martino, Luciano Merlini, Manuela Antoniel, Stefano Squarzoni, Simona Neri, Spartaco Santi, Samuele Metti, Paolo Bonaldo, Cesare Faldini
The pericellular matrix (PCM) is a specialized extracellular matrix that surrounds cells. Interactions with the PCM enable the cells to sense and respond to mechanical signals, triggering a proper adaptive response. Collagen VI is a component of muscle and tendon PCM. Mutations in collagen VI genes cause a distinctive group of inherited skeletal muscle diseases, and Ullrich congenital muscular dystrophy (UCMD) is the most severe form. In addition to muscle weakness, UCMD patients show structural and functional changes of the tendon PCM...
February 22, 2024: Cells
#5
JOURNAL ARTICLE
Victor Morel, Frédérique Audic, Charlotte Tardy, Annie Verschueren, Shahram Attarian, Karine Nguyen, Emmanuelle Salort-Campana, Martin Krahn, Brigitte Chabrol, Svetlana Gorokhova
Collagen type VI-related dystrophies (COL6-RD) are rare diseases with a wide phenotypic spectrum ranging from severe Ullrich's congenital muscular dystrophy Ullrich congenital muscular dystrophy to much milder Bethlem myopathy Both dominant and recessive forms of COL6-RD are caused by pathogenic variants in three collagen VI genes ( COL6A1 , COL6A2 and COL6A3 ). The prognosis of these diseases is variable and difficult to predict during early disease stages, especially since the genotype-phenotype correlation is not always clear...
2023: Frontiers in Genetics
#6
JOURNAL ARTICLE
Jiayi Li, Shuangzhu Lin, Qiong Wu, Jinhua Feng, Qiandui Chen, Kai Jiang
RATIONALE: Mutations in the gene encoding type VI collagen cause Bethlem myopathy (MIM 158810) and Ullrich congenital muscular dystrophy (MIM 254090); 2 diseases previously recognized as completely independent, and have been increasingly recognized. However, collagen-related myopathy caused by intron variation in the COL6 gene is rarely reported in China. Ullrich congenital muscular dystrophy is an autosomal recessive disorder that leads to severe muscle weakness with early onset. Thus, children may never walk independently, with proximal joint contractures and significant hyperelastic distal joints, and have early respiratory failure...
December 8, 2023: Medicine (Baltimore)
#7
JOURNAL ARTICLE
Mihaela Oros, Lucica Baranga, Adelina Glangher, Moldovan Adina-Diana, Gheorghita Jugulete, Carmen Pavelescu, Florin Mihaltan, Vasilica Plaiasu, Dan Cristian Gheorghe
Collagen VI-related disorders constitute a spectrum of severities from the milder Bethlem myopathy (BM) to the Ullrich congenital muscular dystrophy (UCMD), which is more severe, and an intermediate form characterized by muscle weakness that begins in infancy. Affected children are able to walk, although walking becomes increasingly difficult starting in early adulthood. They develop contractures in the ankles, elbows, knees, and spine in childhood. In some affected cases, the respiratory muscles are weakened, requiring mechanical ventilation, particularly during sleep...
November 4, 2023: Journal of Personalized Medicine
#8
JOURNAL ARTICLE
Songchao Xu, Liangshan Li, Lu Shen, Xiaoyu Wang, Wei Feng, Shiguo Liu
Congenital muscular dystrophies (CMDs) are a group of rare genetic diseases that primarily affect the muscle and are characterized by progressive degeneration and weakness(1, 2). Ullrich congenital muscular dystrophy (UCMD) is a rare type of autosomal dominant or recessive CMDs, mainly caused by mutations in the related genes leading to loss of collagen VI with an earlier onset time and progressive clinical symptoms(1, 3). We describe a case which presented UCMD caused by novel COL6A2 mutations.
September 21, 2023: QJM: Monthly Journal of the Association of Physicians
#9
Leanne Jankelunas, Vishal D Murthy, Annie V Chen, Katie M Minor, Steven G Friedenberg, Jonah N Cullen, Ling T Guo, James R Mickelson, G Diane Shelton
Two (male and female) 10-month-old American Staffordshire Terrier littermates presented for progressive weakness, joint contracture, and distal limb joint hyperlaxity beginning around 6 months of age. Neurological examination, serum creatine kinase activity, infectious disease titers, cerebrospinal fluid analysis, and electrodiagnostic testing were performed. Muscle biopsies were collected for histopathology and immunofluorescence staining for localization of dystrophy associated proteins. Whole-genome sequencing (WGS) was performed on 1 affected dog...
September 14, 2023: Journal of Veterinary Internal Medicine
#10
JOURNAL ARTICLE
Luciano Merlini, Patrizia Sabatelli, Francesca Gualandi, Edoardo Redivo, Alberto Di Martino, Cesare Faldini
Pathogenetic mechanism recognition and proof-of-concept clinical trials were performed in our patients affected by collagen VI-related myopathies. This study, which included 69 patients, aimed to identify innovative clinical data to better design future trials. Among the patients, 33 had Bethlem myopathy (BM), 24 had Ullrich congenital muscular dystrophy (UCMD), 7 had an intermediate phenotype (INTM), and five had myosclerosis myopathy (MM). We obtained data on muscle strength, the degree of contracture, immunofluorescence, and genetics...
August 5, 2023: International Journal of Molecular Sciences
#11
JOURNAL ARTICLE
Karim Naghipoor, Teymoor Khosravi, Morteza Oladnabi
BACKGROUND: Mutations within the COL12A1 gene have been linked with the onset of congenital Ullrich muscular dystrophy 2 (UCMD2) and Bethlem myopathy. The severity of the symptoms exhibited is dependent on the mutation's type and whether it is heterozygous or homozygous. METHODS: We used whole-exome sequencing to identify disease-causing variants in a nine-year-old Iranian patient who had weakness, joint contractures, delayed motor development, and other symptoms...
July 17, 2023: Molecular Biology Reports
#12
JOURNAL ARTICLE
Maria Barington, Morten Dunø, Ulf Birkedal, John Vissing, Alfred Peter Born, Thomas Krag, Thomas van Overeem Hansen, Elsebet Østergaard
The three major collagen VI genes: COL6A1, COL6A2, and COL6A3 encode microfibrillar components of extracellular matrices in multiple tissues including muscles and tendons. Pathogenic variants in the collagen VI genes cause collagen VI-related dystrophies representing a continuum of conditions from Bethlem myopathy at the milder end to Ullrich congenital muscular dystrophy at the more severe end. Here we describe a pathogenic variant in the COL6A1 gene (NM_001848.3; c.1741-6G>A) found in homozygosity in three patients with Ullrich congenital muscular dystrophy...
May 24, 2023: Neuromuscular Disorders: NMD
#13
JOURNAL ARTICLE
Michela Starace, Francesca Pampaloni, Francesca Bruni, Federico Quadrelli, Stephano Cedirian, Carlotta Baraldi, Cosimo Misciali, Alberto Di Martino, Patrizia Sabatelli, Luciano Merlini, Bianca Maria Piraccini
Collagen VI-related myopathies are characterized by severe muscle involvement and skin involvement (keratosis pilaris and impaired healing with the development of abnormal scars, especially keloids). Scalp involvement and hair loss have not been reported among cutaneous changes associated with collagen VI mutations. The aim of this study is to describe the clinical, trichoscopic, and histological findings of the scalp changes in patients affected by COL VI mutations and to estimate their prevalence. Patients with Ullrich congenital muscular dystrophy were enrolled and underwent clinical and trichoscopic examinations and a scalp biopsy for histopathology...
April 3, 2023: International Journal of Molecular Sciences
#14
JOURNAL ARTICLE
Anna Ky Kwong, Yanmin Zhang, Ronnie Sl Ho, Yuan Gao, Xu Ling, Mandy Hy Tsang, H M Luk, Brian Hy Chung, Carsten G Bönnemann, Asif Javed, Sophelia Hs Chan
Collagen VI-related myopathies are a group of disorders that cause muscle weakness and joint contractures with significant variability in disease severity among patients. Here we report the clinical and genetic characteristics of 13 Chinese patients. Detailed histological, radiological and muscle transcriptomic evaluations were also conducted for selected representative patients. Across the cohort, fifteen putative disease causal variants were identified in three genes encoding collagen VI subunits, COL6A1 (n=6), COL6A2 (n=5), and COL6A3 (n=4)...
May 2023: Neuromuscular Disorders: NMD
#15
JOURNAL ARTICLE
Simona Zanotti, Francesca Magri, Sabrina Salani, Laura Napoli, Michela Ripolone, Dario Ronchi, Francesco Fortunato, Patrizia Ciscato, Daniele Velardo, Maria Grazia D'Angelo, Francesca Gualandi, Vincenzo Nigro, Monica Sciacco, Stefania Corti, Giacomo Pietro Comi, Daniela Piga
Collagen VI is a heterotrimeric protein expressed in several tissues and involved in the maintenance of cell integrity. It localizes at the cell surface, creating a microfilamentous network that links the cytoskeleton to the extracellular matrix. The heterotrimer consists of three chains encoded by COL6A1 , COL6A2 and COL6A3 genes. Recessive and dominant molecular defects cause two main disorders, the severe Ullrich congenital muscular dystrophy and the relatively mild and slowly progressive Bethlem myopathy...
March 14, 2023: International Journal of Molecular Sciences
#16
REVIEW
Alberto Di Martino, Matilde Cescon, Claudio D'Agostino, Francesco Schilardi, Patrizia Sabatelli, Luciano Merlini, Cesare Faldini
Collagen VI exerts several functions in the tissues in which it is expressed, including mechanical roles, cytoprotective functions with the inhibition of apoptosis and oxidative damage, and the promotion of tumor growth and progression by the regulation of cell differentiation and autophagic mechanisms. Mutations in the genes encoding collagen VI main chains, COL6A1, COL6A2 and COL6A3 , are responsible for a spectrum of congenital muscular disorders, namely Ullrich congenital muscular dystrophy (UCMD), Bethlem myopathy (BM) and myosclerosis myopathy (MM), which show a variable combination of muscle wasting and weakness, joint contractures, distal laxity, and respiratory compromise...
March 7, 2023: International Journal of Molecular Sciences
#17
JOURNAL ARTICLE
Sara Aguti, Fady Guirguis, Carsten Bönnemann, Francesco Muntoni, Véronique Bolduc, Haiyan Zhou
Single nucleotide variants that alter splice sites or splicing regulatory elements can lead to the skipping of exons, retention of introns, or insertion of pseudo-exons (PE) into the mature mRNA transcripts. When translated, these changes can disrupt the function of the synthesized protein. Splice-switching antisense oligonucleotides (ASOs) are synthetic, modified nucleic acids that can correct these aberrant splicing events. They are currently in active clinical development for a number of conditions and have been approved by regulatory agencies for the treatment of neuromuscular disorders such as Duchenne muscular dystrophy and spinal muscular atrophy...
2023: Methods in Molecular Biology
#18
JOURNAL ARTICLE
Sofya A Ionova, Aysylu F Murtazina, Inna S Tebieva, Zalina K Getoeva, Elena L Dadali, Polina A Chausova, Olga A Shchagina, Andrey V Marakhonov, Sergey I Kutsev, Rena A Zinchenko
Here, we described three affected boys from two unrelated families of Ossetian-Digor origin from the Republic of North Ossetia-Alania who were admitted to the Research Centre for Medical Genetics with unspecified muscular dystrophy. High-throughput sequencing was performed and revealed two novel frameshift variants in the COL6A2 gene (NM_001849.3) in a heterozygous state each in both cases: c.508_535delinsCTGTGG and c.1659_1660del (case 1) and c.1689del and c.1659_1660del (case 2). In two cases, the same nucleotide variant in the COL6A2 gene (c...
October 12, 2022: International Journal of Molecular Sciences
#19
JOURNAL ARTICLE
Ilaria Gregorio, Maddalena Mereu, Gabriella Contarini, Luca Bello, Claudio Semplicini, Francesca Burgio, Loris Russo, Stefania Sut, Stefano Dall'Acqua, Paola Braghetta, Carlo Semenza, Elena Pegoraro, Francesco Papaleo, Paolo Bonaldo, Matilde Cescon
Mutations of genes coding for Collagen VI (COL6) cause muscle diseases, including Ullrich congenital muscular dystrophy (UCMD) and Bethlem myopathy (BM). Although more recently COL6 genetic variants were linked to brain pathologies, the impact of COL6 deficiency in brain function is still largely unknown. Here, a thorough behavioral characterization of COL6 null (Col6a1-/-) mice unexpectedly revealed that COL6 deficiency leads to a significant impairment in sensorimotor gating and memory/attention functions...
August 10, 2022: Disease Models & Mechanisms
#20
JOURNAL ARTICLE
Thomas Hachenberg, Thorsten Walles, Eva Lücke, Thomas Schilling
Ullrich congenital muscular dystrophy (UCMD) is a rare disease caused by mutations in the COL6A1, COL6A2 or COL6A3 genes leading to deficiency of collagen VI in extracellular matrices (ECM). Patients present with generalized muscle weakness, predominantly in the trunk and proximal limbs, hyperlaxity of distal joints, spinal rigidity, scoliosis and various proximal joint contractures, loss of ambulation by 9-11 years of age and progressive respiratory dysfunction. About 50% of the patients require noninvasive ventilation (NIV) by the age of 11-12 years...
May 30, 2022: Anaesthesiologie
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