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Zhu J, Ma M, Chen X, Xiong C, Ju Y, Chunhui T. Novel mutation in the IGHMBP2 gene in spinal muscular atrophy with respiratory distress type 1: A case report. Heliyon 2024; 10:e35415. [PMID: 39170411 PMCID: PMC11337098 DOI: 10.1016/j.heliyon.2024.e35415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 07/27/2024] [Accepted: 07/29/2024] [Indexed: 08/23/2024] Open
Abstract
Background Spinal muscular atrophy with respiratory distress type 1 (SMARD1) is a rare autosomal recessive hereditary disease. Immunoglobulin μ-binding protein 2 (IGHMBP2) gene mutations are the main cause of SMARD1. Case presentation Here we describe a female infant with SMARD1 carrying heterozygous mutations in IGHMBP2 genes, c.1334A > C(p.His445Pro) and c.1666C > G(p.His556Asp), which were inherited from both parents. Clinical presentations included frequent respiratory infections, respiratory failure, distal limb muscle weakness, and fat pad found at the distal toe. Conclusions c.1666C > G(p.His556Asp) is a novel site mutation in IGHMBP2. This case expanded knowledge on the genetic profile of SMARD1 and it provides a basis for genetic testing of parents and for genetic counseling to assess the risk of fetal disease.
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Affiliation(s)
- Jicai Zhu
- Department of Pediatrics, The First People's Hospital of Yunnan Province, Medical School & Affiliated Hospital, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Minming Ma
- Department of Pediatrics, The First People's Hospital of Yunnan Province, Medical School & Affiliated Hospital, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Xiaofang Chen
- Department of Pediatrics, The First People's Hospital of Yunnan Province, Medical School & Affiliated Hospital, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Caiyun Xiong
- Department of Pediatrics, The First People's Hospital of Yunnan Province, Medical School & Affiliated Hospital, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yan Ju
- Department of Pediatrics, The First People's Hospital of Yunnan Province, Medical School & Affiliated Hospital, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Tang Chunhui
- Department of Pediatrics, The First People's Hospital of Yunnan Province, Medical School & Affiliated Hospital, Kunming University of Science and Technology, Kunming, Yunnan, China
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Chiu ATG, Chan SHS, Wu SP, Ting SH, Chung BHY, Chan AOK, Wong VCN. Spinal Muscular Atrophy With Respiratory Distress Type 1-A Child With Atypical Presentation. Child Neurol Open 2018; 5:2329048X18769811. [PMID: 29761130 PMCID: PMC5946598 DOI: 10.1177/2329048x18769811] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 02/20/2018] [Accepted: 03/07/2018] [Indexed: 11/15/2022] Open
Abstract
The authors report a child with spinal muscular atrophy with respiratory distress type 1 (SMARD1). She presented atypically with hypothyroidism and heart failure due to septal defects that required early heart surgery and microcephaly in association with cerebral atrophy and thin corpus collosum. The subsequent asymmetrical onset of diaphragmatic paralysis, persistent hypotonia, and generalized muscle weakness led to the suspicion of spinal muscular atrophy with respiratory distress type 1. Sanger sequencing confirmed a compound heterozygous mutation in the Immunoglobulin Mu Binding Protein 2 (IGHMBP2) gene, with a known mutation c.2362C > T (p.Arg788*) and a novel frameshift mutation c.2048delG (p.Gly683A1afs*50). Serial nerve conduction study and electromyography confirmed progressive sensorimotor polyneuropathy and neuronopathy. In summary, this case report describes a child with spinal muscular atrophy with respiratory distress type 1 also with congenital cardiac disease and endocrine dysfunction, expanding the phenotypic spectrum of this condition. A high index of suspicion is needed in diagnosing this rare condition to guide the management and genetic counseling.
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Affiliation(s)
- Annie Ting Gee Chiu
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - Sophelia Hoi Shan Chan
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - Shun Ping Wu
- Department of Paediatrics, Queen Elizabeth Hospital, Hong Kong, Hong Kong SAR
| | - Shun Hin Ting
- Department of Pathology and Clinical Biochemistry, Queen Elizabeth Hospital, Hong Kong, Hong Kong SAR
| | - Brian Hon Yin Chung
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - Angel On Kei Chan
- Department of Pathology, Queen Mary Hospital, Hong Kong, Hong Kong SAR
| | - Virginia Chun Nei Wong
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR
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Habibi Zoham M, Eghbalkhah A, Kamrani K, Khosroshahi N, Yousefimanesh H, Eskandarizadeh Z. Distal Spinal Muscular Atrophy: An Overlooked Etiology of Weaning Failure in Children with Respiratory Insufficiency. J Pediatr Intensive Care 2018; 7:159-162. [PMID: 31073488 DOI: 10.1055/s-0037-1617434] [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] [Received: 10/21/2017] [Accepted: 12/01/2017] [Indexed: 10/18/2022] Open
Abstract
Spinal muscular atrophy with respiratory distress type 1 (SMARD1) is a rare autosomal recessive neuromuscular disorder that involves the anterior horn motor neurons. It is a disease with a poor prognosis presenting with progressive distal motor weakness and respiratory insufficiency from diaphragmatic paralysis followed by distal muscle weakness before 6 months of age. With the intent to spread the awareness of this rare and life-threatening disease, we report a 2.5-month-old female infant with a subsequent diagnosis of SMARD1, who was admitted in our pediatric intensive care unit with chief complaint of progressive respiratory distress and poor feeding.
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Affiliation(s)
- Mojdeh Habibi Zoham
- Department of Pediatric Intensive Care Unit, Bahrami Children's Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Asgar Eghbalkhah
- Department of Pediatric Intensive Care Unit, Bahrami Children's Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Kamyar Kamrani
- Department of Neonatal Intensive Care Unit, Bahrami Children's Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Nahid Khosroshahi
- Department of Pediatric Neurology, Bahrami Children's Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Hossein Yousefimanesh
- Department of Pediatric Intensive Care Unit, Bahrami Children's Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Zahra Eskandarizadeh
- Department of Pediatric Intensive Care Unit, Bahrami Children's Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
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Spinal muscular atrophy with respiratory distress type 1 (SMARD1) Report of a Spanish case with extended clinicopathological follow-up. Clin Neuropathol 2015; 35:58-65. [PMID: 26709713 PMCID: PMC4806405 DOI: 10.5414/np300902] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2016] [Indexed: 12/02/2022] Open
Abstract
Background: Spinal muscular atrophy with respiratory distress type 1 (SMARD1) is a clinically and genetically distinct and uncommon variant of SMA that results from irreversible degeneration of α-motor neurons in the anterior horns of the spinal cord and in ganglion cells on the spinal root ganglia. Aims: To describe the clinical, electrophysiological, neuropathological, and genetic findings, at different stages from birth to death, of a Spanish child diagnosed with SMARD1. Patient and methods: We report the case of a 3-month-old girl with severe respiratory insufficiency and, later, intense hypotonia. Paraclinical tests included biochemistry, chest X-ray, and electrophysiological studies, among others. Muscle and nerve biopsies were performed at 5 and 10 months and studied under light and electron microscopy. Post-mortem examination and genetic investigations were performed. Results: Pre- and post-mortem histopathological findings demonstrated the disease progression over time. Muscle biopsy at 5 months of age was normal, however a marked neurogenic atrophy was present in post-mortem samples. Peripheral motor and sensory nerves were severely involved likely due to a primary axonal disorder. Automatic sequencing of IGHMBP2 revealed a compound heterozygous mutation. Conclusions: The diagnosis of SMARD1 should be considered in children with early respiratory insufficiency or in cases of atypical SMA. Direct sequencing of the IGHMBP2 gene should be performed.
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Han C, Mai J, Tian T, He Y, Liao J, Wen F, Yi X, Yang Y. Patient with spinal muscular atrophy with respiratory distress type 1 presenting initially with hypertonia. Brain Dev 2015; 37:542-5. [PMID: 25280635 DOI: 10.1016/j.braindev.2014.09.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 08/20/2014] [Accepted: 09/09/2014] [Indexed: 02/05/2023]
Abstract
Spinal muscular atrophy with respiratory distress type 1 (SMARD1) is a rare autosomal recessive neuromuscular disorder caused by mutations in the IGHMBP2 gene and characterized by life-threatening respiratory distress due to irreversible diaphragmatic paralysis between 6weeks and 6months of age. In this study, we describe a two-month-old boy who presented with hypertonia at first and developed to hypotonia progressively, which was in contrast to the manifestations reported previously. Bone tissue compromise was also observed as one of the unique symptoms. Muscle biopsy indicated mild myogenic changes. He was misdiagnosed until genetic screening to be confirmed as SMARD1. SMARD1 is a clinical heterogeneous disease and this case broadens our perception of its phenotypes.
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Affiliation(s)
- Chunxi Han
- Department of Neurology, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Jiahui Mai
- Department of Neurology, Shenzhen Children's Hospital, Shenzhen, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China
| | | | - Yanxia He
- Pediatric Intensive Care Unit, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Jianxiang Liao
- Department of Neurology, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Feiqiu Wen
- Department of Neurology, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
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Growing up with spinal muscular atrophy with respiratory distress (SMARD1). Neuromuscul Disord 2015; 25:169-71. [DOI: 10.1016/j.nmd.2014.10.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 09/30/2014] [Accepted: 10/16/2014] [Indexed: 11/17/2022]
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