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Ognean ML, Anciuc-Crauciuc M, Galiș R, Stepan AE, Stepan MD, Bănescu C, Grosu F, Kramer BW, Cucerea M. ABCA3 c.838C>T (p.Arg280Cys, R280C) and c.697C>T (p.Gln233Ter, Q233X, Q233*) as Causative Variants for RDS: A Family Case Study and Literature Review. Biomedicines 2024; 12:2390. [PMID: 39457702 PMCID: PMC11505159 DOI: 10.3390/biomedicines12102390] [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: 08/14/2024] [Revised: 10/09/2024] [Accepted: 10/16/2024] [Indexed: 10/28/2024] Open
Abstract
Background: Respiratory distress syndrome (RDS) is the primary cause of respiratory failure in preterm infants, but it also affects 5-7% of term infants. Dysfunctions in pulmonary surfactant metabolism, resulting from mutations of the lung surfactant genes, are rare diseases, ranging from fatal neonatal RDS to interstitial lung disease, associated with increased morbidity and mortality. This study aims to clarify the clinical significance of ABCA3 variants found in a specific family case, as existing data in the literature are inconsistent. Material and Methods: A family case report was conducted; targeted panel genetic testing identified a variant of the SFTPB gene and two variants of ABCA3 genes. Comprehensive research involving a systematic review of PubMed, Google Scholar databases, and genome browsers was used to clarify the pathogenicity of the two ABCA3 variants found in the index patient. Advanced prediction tools were employed to assess the pathogenicity of the two ABCA3 variants, ensuring the validity and reliability of our findings. Results: The index case exhibited fatal neonatal RDS. Genetic testing revealed the presence of the SFTPB p.Val267Ile variant, which was not previously reported but is a benign variant based on family genetic testing and history. Additionally, two ABCA3 gene variants were identified: c.697C>T, not yet reported, and c.838C>T. These variants were found to affect ABCA3 protein function and were likely associated with neonatal RDS. Prediction tools and data from nine other cases in the literature supported this conclusion. Conclusions: Based on in silico predictors, an analysis of the presented family, and cases described in the literature, it is reasonable to consider reclassifying the two ABCA3 variants identified in the index case as pathogenic/pathogenic. Reclassification will improve genetic counseling accuracy and facilitate correct diagnosis.
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Affiliation(s)
- Maria Livia Ognean
- Faculty of Medicine, Lucian Blaga University, 550169 Sibiu, Romania; (M.L.O.)
- Neonatology Department, Clinical County Emergency Hospital, 550245 Sibiu, Romania
| | - Mădălina Anciuc-Crauciuc
- Department of Neonatology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Targu Mures, Romania;
| | - Radu Galiș
- Department of Neonatology, Emergency County Hospital Bihor, Oradea University, 410087 Oradea, Romania;
- Department of Neonatology, Poznan University of Medical Sciences, 61-701 Poznan, Poland
| | - Alex-Emilian Stepan
- Department of Pathology, University of Medicine and Pharmacy of Craiova, 2 Petru Rares Street, 200349 Craiova, Romania
| | - Mioara Desdemona Stepan
- Department of Infant Care-Pediatrics-Neonatology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Claudia Bănescu
- Genetic Department, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, Gheorghe Marinescu Street No. 38, 540136 Targu Mures, Romania
| | - Florin Grosu
- Faculty of Medicine, Lucian Blaga University, 550169 Sibiu, Romania; (M.L.O.)
- Imaging Department, Lucian Blaga University, 550169 Sibiu, Romania
| | - Boris W. Kramer
- Department of Neonatology, Poznan University of Medical Sciences, 61-701 Poznan, Poland
| | - Manuela Cucerea
- Department of Neonatology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Targu Mures, Romania;
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Anciuc-Crauciuc M, Cucerea MC, Tripon F, Crauciuc GA, Bănescu CV. Descriptive and Functional Genomics in Neonatal Respiratory Distress Syndrome: From Lung Development to Targeted Therapies. Int J Mol Sci 2024; 25:649. [PMID: 38203821 PMCID: PMC10780183 DOI: 10.3390/ijms25010649] [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: 11/13/2023] [Revised: 12/28/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024] Open
Abstract
In this up-to-date study, we first aimed to highlight the genetic and non-genetic factors associated with respiratory distress syndrome (RDS) while also focusing on the genomic aspect of this condition. Secondly, we discuss the treatment options and the progressing therapies based on RNAs or gene therapy. To fulfill this, our study commences with lung organogenesis, a highly orchestrated procedure guided by an intricate network of conserved signaling pathways that ultimately oversee the processes of patterning, growth, and differentiation. Then, our review focuses on the molecular mechanisms contributing to both normal and abnormal lung growth and development and underscores the connections between genetic and non-genetic factors linked to neonatal RDS, with a particular emphasis on the genomic aspects of this condition and their implications for treatment choices and the advancing therapeutic approaches centered around RNAs or gene therapy.
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Affiliation(s)
- Mădălina Anciuc-Crauciuc
- Genetics Department, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureș, Romania; (M.A.-C.); (C.V.B.)
- Neonatology Department, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureș, Romania;
| | - Manuela Camelia Cucerea
- Neonatology Department, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureș, Romania;
| | - Florin Tripon
- Genetics Department, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureș, Romania; (M.A.-C.); (C.V.B.)
| | - George-Andrei Crauciuc
- Genetics Laboratory, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540139 Târgu Mureș, Romania;
| | - Claudia Violeta Bănescu
- Genetics Department, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureș, Romania; (M.A.-C.); (C.V.B.)
- Genetics Laboratory, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540139 Târgu Mureș, Romania;
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韩 俊, 张 蓉, 周 建, 胡 黎, 钱 莉, 陆 爱, 杨 琳, 马 阳, 乔 中, 张 澜. [Congenital pulmonary alveolar proteinosis in a neonate]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2023; 25:1089-1094. [PMID: 37905769 PMCID: PMC10621054 DOI: 10.7499/j.issn.1008-8830.2307035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 08/08/2023] [Indexed: 11/02/2023]
Abstract
The male patient was referred to the hospital at 44 days old due to dyspnea after birth and inability to wean off oxygen. His brother died three days after birth due to respiratory failure. The main symptoms observed were respiratory failure, dyspnea, and hypoxemia. A chest CT scan revealed characteristic reduced opacity in both lungs with a "crazy-paving" appearance. The bronchoalveolar lavage fluid (BALF) showed periodic acid-Schiff positive proteinaceous deposits. Genetic testing indicated a compound heterozygous mutation in the ABCA3 gene. The diagnosis for the infant was congenital pulmonary alveolar proteinosis (PAP). Congenital PAP is a significant cause of challenging-to-treat respiratory failure in full-term infants. Therefore, congenital PAP should be considered in infants experiencing persistently difficult-to-treat dyspnea shortly after birth. Early utilization of chest CT scans, BALF pathological examination, and genetic testing may aid in early diagnosis.
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Affiliation(s)
| | | | | | | | - 莉玲 钱
- 复旦大学附属儿科医院呼吸科/国家儿童医学中心上海201102
| | - 爱珍 陆
- 复旦大学附属儿科医院呼吸科/国家儿童医学中心上海201102
| | - 琳 杨
- 复旦大学附属儿科医院 内分泌遗传代谢科上海201102
| | - 阳阳 马
- 复旦大学附属儿科医院病理科/国家儿童医学中心上海201102
| | - 中伟 乔
- 复旦大学附属儿科医院影像科/国家儿童医学中心上海201102
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