1
|
Rimoldi M, Romagnoli G, Magri F, Antognozzi S, Cinnante C, Saccani E, Ciscato P, Zanotti S, Velardo D, Corti S, Comi GP, Ronchi D. Case report: A novel patient presenting TRIM32-related limb-girdle muscular dystrophy. Front Neurol 2024; 14:1281953. [PMID: 38304327 PMCID: PMC10831852 DOI: 10.3389/fneur.2023.1281953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 12/19/2023] [Indexed: 02/03/2024] Open
Abstract
Limb-girdle muscular dystrophy autosomal recessive 8 (LGMDR8) is a rare clinical manifestation caused by the presence of biallelic variants in the TRIM32 gene. We present the clinical, molecular, histopathological, and muscle magnetic resonance findings of a novel 63-years-old LGMDR8 patient of Italian origins, who went undiagnosed for 24 years. Clinical exome sequencing identified two TRIM32 missense variants, c.1181G > A p.(Arg394His) and c.1781G > A p.(Ser594Asp), located in the NHL1 and NHL4 structural domains, respectively, of the TRIM32 protein. We conducted a literature review of the clinical and instrumental data associated to the so far known 26 TRIM32 variants, carried biallelically by 53 LGMDR8 patients reported to date in 20 papers. Our proband's variants were previously identified only in three independent LGMDR8 patients in homozygosis, therefore our case is the first in literature to be described as compound heterozygous for such variants. Our report also provides additional data in support of their pathogenicity, since p.(Arg394His) is currently classified as a variant of uncertain significance, while p.(Ser594Asp) as likely pathogenic. Taken together, these findings might be useful to improve both the genetic counseling and the diagnostic accuracy of this rare neuromuscular condition.
Collapse
Affiliation(s)
- Martina Rimoldi
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Gloria Romagnoli
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesca Magri
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sara Antognozzi
- Neurology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Claudia Cinnante
- Department of Radiology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Elena Saccani
- Neurology Unit, Department of Specialized Medicine, University Hospital of Parma, Parma, Italy
| | - Patrizia Ciscato
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Simona Zanotti
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Daniele Velardo
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Stefania Corti
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Giacomo Pietro Comi
- Neurology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Dario Ronchi
- Neurology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| |
Collapse
|
2
|
Jeong SY, Choi JH, Kim J, Woo JS, Lee EH. Tripartite Motif-Containing Protein 32 (TRIM32): What Does It Do for Skeletal Muscle? Cells 2023; 12:2104. [PMID: 37626915 PMCID: PMC10453674 DOI: 10.3390/cells12162104] [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: 07/19/2023] [Revised: 08/07/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
Tripartite motif-containing protein 32 (TRIM32) is a member of the tripartite motif family and is highly conserved from flies to humans. Via its E3 ubiquitin ligase activity, TRIM32 mediates and regulates many physiological and pathophysiological processes, such as growth, differentiation, muscle regeneration, immunity, and carcinogenesis. TRIM32 plays multifunctional roles in the maintenance of skeletal muscle. Genetic variations in the TRIM32 gene are associated with skeletal muscular dystrophies in humans, including limb-girdle muscular dystrophy type 2H (LGMD2H). LGMD2H-causing genetic variations of TRIM32 occur most frequently in the C-terminal NHL (ncl-1, HT2A, and lin-41) repeats of TRIM32. LGMD2H is characterized by skeletal muscle dystrophy, myopathy, and atrophy. Surprisingly, most patients with LGMD2H show minimal or no dysfunction in other tissues or organs, despite the broad expression of TRIM32 in various tissues. This suggests more prominent roles for TRIM32 in skeletal muscle than in other tissues or organs. This review is focused on understanding the physiological roles of TRIM32 in skeletal muscle, the pathophysiological mechanisms mediated by TRIM32 genetic variants in LGMD2H patients, and the correlations between TRIM32 and Duchenne muscular dystrophy (DMD).
Collapse
Affiliation(s)
- Seung Yeon Jeong
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jun Hee Choi
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jooho Kim
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jin Seok Woo
- Department of Physiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 10833, USA
| | - Eun Hui Lee
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
| |
Collapse
|
3
|
Guan Y, Liang X, Li W, Lin W, Liang G, Xie H, Hou Y, Hu Y, Shang X. TRIM32 biallelic defects cause limb-girdle muscular dystrophy R8: identification of two novel mutations and investigation of genotype-phenotype correlation. Skelet Muscle 2023; 13:10. [PMID: 37217920 DOI: 10.1186/s13395-023-00319-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/12/2023] [Indexed: 05/24/2023] Open
Abstract
BACKGROUND Limb-girdle muscular dystrophy R8 (LGMD R8) is a rare autosomal recessive muscle disease caused by TRIM32 gene biallelic defects. The genotype-phenotype correlation of this disease has been reported poorly. Here, we report a Chinese family with two female LGMD R8 patients. METHODS We performed whole-genome sequencing (WGS) and Sanger sequencing on the proband. Meanwhile, the function of mutant TRIM32 protein was analyzed by bioinformatics and experimental analysis. In addition, a summary of the reported TRIM32 deletions and point mutations and an investigation of genotype-phenotype correlation were performed through a combined analysis of the two patients and other cases reported in previous literature. RESULTS The two patients displayed typical symptoms of LGMD R8, which worsened during pregnancy. Genetic analysis by whole-genome sequencing (WGS) and Sanger sequencing showed that the patients were compound heterozygotes of a novel deletion (chr9.hg19:g.119431290_119474250del) and a novel missense mutation (TRIM32:c.1700A > G, p.H567R). The deletion encompassed 43 kb and resulted in the removal of the entire TRIM32 gene. The missense mutation altered the structure and further affected function by interfering with the self-association of the TRIM32 protein. Females with LGMD R8 showed less severe symptoms than males, and patients carrying two mutations in NHL repeats of the TRIM32 protein had earlier disease onset and more severe symptoms than other patients. CONCLUSIONS This research extended the spectrum of TRIM32 mutations and firstly provided useful data on the genotype-phenotype correlation, which is valuable for the accurate diagnosis and genetic counseling of LGMD R8.
Collapse
Affiliation(s)
- Yuqing Guan
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiongda Liang
- Department of Medical Genetics, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Wei Li
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wanying Lin
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guanxia Liang
- Department of Medical Genetics, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Hongting Xie
- Department of Medical Genetics, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Yu Hou
- Department of Hematology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Yafang Hu
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xuan Shang
- Department of Medical Genetics, School of Basic Medical Science, Southern Medical University, Guangzhou, China.
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Guangzhou, China.
| |
Collapse
|
4
|
Alawneh I, Stosic A, Gonorazky H. Muscle MRI patterns for limb girdle muscle dystrophies: systematic review. J Neurol 2023:10.1007/s00415-023-11722-1. [PMID: 37129643 DOI: 10.1007/s00415-023-11722-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/06/2023] [Accepted: 04/11/2023] [Indexed: 05/03/2023]
Abstract
Limb girdle muscle dystrophies (LGMDs) are a group of inherited neuromuscular disorders comprising more than 20 genes. There have been increasing efforts to characterize this group with Muscle MRI. However, due to the complexity and similarities, the interpretation of the MRI patterns is usually done by experts in the field. Here, we proposed a step-by-step image interpretation of Muscle MRI in LGDM by evaluating the variability of muscle pattern involvement reported in the literature. A systematic review with an open start date to November 2022 was conducted to describe all LGMDs' muscle MRI patterns. Eighty-eight studies were included in the final review. Data were found to describe muscle MRI patterns for 15 out of 17 LGMDs types. Although the diagnosis of LGMDs is challenging despite the advanced genetic testing and other diagnostic modalities, muscle MRI is shown to help in the diagnosis of LGMDs. To further increase the yield for muscle MRI in the neuromuscular field, larger cohorts of patients need to be conducted.
Collapse
Affiliation(s)
- Issa Alawneh
- Department of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Ana Stosic
- Genetics and Genome Biology Program, The Hospital for Sick Children Research Institute, Toronto, Canada
| | - Hernan Gonorazky
- Department of Neurology, The Hospital for Sick Children, Toronto, Canada.
| |
Collapse
|
5
|
Olguín HC. The Gentle Side of the UPS: Ubiquitin-Proteasome System and the Regulation of the Myogenic Program. Front Cell Dev Biol 2022; 9:821839. [PMID: 35127730 PMCID: PMC8811165 DOI: 10.3389/fcell.2021.821839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/30/2021] [Indexed: 12/12/2022] Open
Abstract
In recent years, the ubiquitin-proteasome system (UPS) has emerged as an important regulator of stem cell function. Here we review recent findings indicating that UPS also plays critical roles in the biology of satellite cells, the muscle stem cell responsible for its maintenance and regeneration. While we focus our attention on the control of key transcriptional regulators of satellite cell function, we briefly discuss early studies suggesting the UPS participates more broadly in the regulation of satellite cell stemness and regenerative capacity.
Collapse
|
6
|
Wei XJ, Miao J, Kang ZX, Gao YL, Wang ZY, Yu XF. A novel homozygous exon2 deletion of TRIM32 gene in a Chinese patient with sarcotubular myopathy: A case report and literature review. Bosn J Basic Med Sci 2021; 21:495-500. [PMID: 33485293 PMCID: PMC8292861 DOI: 10.17305/bjbms.2020.5288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 12/18/2020] [Indexed: 11/18/2022] Open
Abstract
Sarcotubular myopathy (STM) is a rare autosomal recessive myopathy caused by TRIM32 gene mutations. It is predominantly characterized by the weakness of the proximal limb and mild to moderate elevation of creatine kinase levels. In this study, we describe a 50-year-old Chinese man who exhibited a proximal-to-distal weakness in the muscles of the lower limbs and who had difficulty standing up from a squat position. The symptoms gradually became more severe. He denied a history of cognitive or cardiological problems. The patient’s parents and children were healthy. Histopathological examination revealed dystrophic changes and irregular slit-shaped vacuoles containing amorphous materials. Whole-exome sequencing consisting of protein-encoding regions of 19,396 genes was performed, the results of which identified one novel homozygous 2kb deletion chr9.hg19: g.119460021_119461983del (exon2) in the TRIM32 gene. This was confirmed at the homozygous state with quantitative real-time polymerase chain reaction. Here, we present a Chinese case of STM with one novel mutation in TRIM32 and provide a brief summary of all known pathogenic mutations in TRIM32.
Collapse
Affiliation(s)
- Xiao-Jing Wei
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
| | - Jing Miao
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
| | - Zhi-Xia Kang
- Department of Neurology, The Municipal People's Hospital of Yan'an, Yan'an, China
| | - Yan-Lu Gao
- Department of Neurology, The First Affiliated Hospital of Binzhou Medical University, Binzhou, China
| | - Zi-Yi Wang
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
| | - Xue-Fan Yu
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
| |
Collapse
|
7
|
Chandrasekharan SV, Sundaram S, Malaichamy S, Poyuran R, Nair SS. Myoneuropathic presentation of limb girdle muscular dystrophy R8 with a novel TRIM32 mutation. Neuromuscul Disord 2021; 31:886-890. [PMID: 34244021 DOI: 10.1016/j.nmd.2021.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 11/15/2022]
Abstract
TRIM 32-related Limb Girdle Muscular Dystrophy (LGMD R8/2H) is a rare genetic muscle disease reported in fewer than 100 patients worldwide. Here, we report a male patient with progressive proximo-distal lower limb weakness with onset in the third decade who had mixed myopathic and neurogenic pattern in electrophysiology and muscle biopsy. Clinical exome sequencing revealed a homozygous pathogenic single base pair insertion in exon 2 of the TRIM32 gene confirming the diagnosis of LGMD R8. This is a novel frameshift mutation and one of the very few cases of LGMD R8 reported from India.
Collapse
Affiliation(s)
- Soumya V Chandrasekharan
- Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Soumya Sundaram
- Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | | | - Rajalakshmy Poyuran
- Department of Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Sruthi S Nair
- Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
| |
Collapse
|
8
|
Servián-Morilla E, Cabrera-Serrano M, Rivas-Infante E, Carvajal A, Lamont PJ, Pelayo-Negro AL, Ravenscroft G, Junckerstorff R, Dyke JM, Fletcher S, Adams AM, Mavillard F, Fernández-García MA, Nieto-González JL, Laing NG, Paradas C. Altered myogenesis and premature senescence underlie human TRIM32-related myopathy. Acta Neuropathol Commun 2019; 7:30. [PMID: 30823891 PMCID: PMC6396567 DOI: 10.1186/s40478-019-0683-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 02/20/2019] [Indexed: 11/28/2022] Open
Abstract
TRIM32 is a E3 ubiquitin -ligase containing RING, B-box, coiled-coil and six C-terminal NHL domains. Mutations involving NHL and coiled-coil domains result in a pure myopathy (LGMD2H/STM) while the only described mutation in the B-box domain is associated with a multisystemic disorder without myopathy (Bardet-Biedl syndrome type11), suggesting that these domains are involved in distinct processes. Knock-out (T32KO) and knock-in mice carrying the c.1465G > A (p.D489N) involving the NHL domain (T32KI) show alterations in muscle regrowth after atrophy and satellite cells senescence. Here, we present phenotypical description and functional characterization of mutations in the RING, coiled-coil and NHL domains of TRIM32 causing a muscle dystrophy. Reduced levels of TRIM32 protein was observed in all patient muscle studied, regardless of the type of mutation (missense, single amino acid deletion, and frameshift) or the mutated domain. The affected patients presented with variable phenotypes but predominantly proximal weakness. Two patients had symptoms of both muscular dystrophy and Bardet-Biedl syndrome. The muscle magnetic resonance imaging (MRI) pattern is highly variable among patients and families. Primary myoblast culture from these patients demonstrated common findings consistent with reduced proliferation and differentiation, diminished satellite cell pool, accelerated senescence of muscle, and signs of autophagy activation.
Collapse
|
9
|
PANICUCCI CHIARA, TRAVERSO MONICA, BARATTO SERENA, ROMEO CHIARA, IACOMINO MICHELE, GEMELLI CHIARA, TAGLIAFICO ALBERTO, BRODA PAOLO, ZARA FEDERICO, BRUNO CLAUDIO, MINETTI CARLO, FIORILLO CHIARA. Novel TRIM32 mutation in sarcotubular myopathy. ACTA MYOLOGICA : MYOPATHIES AND CARDIOMYOPATHIES : OFFICIAL JOURNAL OF THE MEDITERRANEAN SOCIETY OF MYOLOGY 2019; 38:8-12. [PMID: 31309175 PMCID: PMC6598407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Tripartite motif-containing protein 32 (TRIM32) is a member of the TRIM ubiquitin E3 ligases which ubiquitinates different substrates in muscle including sarcomeric proteins. Mutations in TRIM32 are associated with Limb-Girdle Muscular Dystrophy 2H. In a 66 old woman with disto-proximal myopathy, we identified a novel homozygous mutation of TRIM32 gene c.1781G > A (p. Ser594Asn) localised in the c-terminus NHL domain. Mutations of this domain have been also associated to Sarcotubular Myopathy (STM), a form of distal myopathy with peculiar features in muscle biopsy, now considered in the spectrum of LGMD2H. Muscle biopsy revealed severe abnormalities of the myofibrillar network with core like areas, lobulated fibres, whorled fibres and multiple vacuoles. Desmin and Myotilin stainings also pointed to accumulation as in Myofibrillar Myopathy. This report further confirms that STM and LGMD2H represent the same disorder and suggests to consider TRIM32 mutations in the genetic diagnosis of Sarcotubular Myopathy and Myofibrillar Myopathy.
Collapse
Affiliation(s)
- CHIARA PANICUCCI
- Pediatric Neurology and Neuromuscular Disorders, Istituto G. Gaslini and University of Genoa, Italy
| | - MONICA TRAVERSO
- Pediatric Neurology and Neuromuscular Disorders, Istituto G. Gaslini and University of Genoa, Italy
| | - SERENA BARATTO
- Centre of Traslational and Experimental Myology, Istituto G. Gaslini, Genoa, Italy
| | - CHIARA ROMEO
- Laboratory of Neurogenetics and Neuroscience, Institute G. Gaslini, Genoa, Italy
| | - MICHELE IACOMINO
- Laboratory of Neurogenetics and Neuroscience, Institute G. Gaslini, Genoa, Italy
| | - CHIARA GEMELLI
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics and Maternal/Child Sciences, University of Genoa, Italy
| | - ALBERTO TAGLIAFICO
- Department of Health Sciences (DISSAL), Radiology Section, University of Genoa, Italy, Radiology, Policlinico San Martino, Genoa, Italy
| | - PAOLO BRODA
- Pediatric Neurology and Neuromuscular Disorders, Istituto G. Gaslini and University of Genoa, Italy
| | - FEDERICO ZARA
- Laboratory of Neurogenetics and Neuroscience, Institute G. Gaslini, Genoa, Italy
| | - CLAUDIO BRUNO
- Centre of Traslational and Experimental Myology, Istituto G. Gaslini, Genoa, Italy
| | - CARLO MINETTI
- Pediatric Neurology and Neuromuscular Disorders, Istituto G. Gaslini and University of Genoa, Italy
| | - CHIARA FIORILLO
- Pediatric Neurology and Neuromuscular Disorders, Istituto G. Gaslini and University of Genoa, Italy,Address for correspondence: Chiara Fiorillo, Pediatric Neurology and Neuromuscular Disorders Unit, Department of Neuroscience and Rehabilitation, G. Gaslini Institute, University of Genoa, via G. Gaslini, 5, 16147 Genoa, Italy. E-mail:
| |
Collapse
|