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Kozawa Y, Yamamoto A, Nakakuki M, Fujiki K, Kondo S, Okada T, Fukuyasu T, Yamaguchi M, Taniguchi I, Nomura N, Liu L, Higuchi M, Niwa E, Sohma Y, Naruse S, Takeyama Y, Ishiguro H. Clinical and genetic features of cystic fibrosis in Japan. J Hum Genet 2023; 68:671-680. [PMID: 37217688 DOI: 10.1038/s10038-023-01160-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/28/2023] [Accepted: 05/07/2023] [Indexed: 05/24/2023]
Abstract
Cystic fibrosis (CF) is an autosomal recessive disease caused by pathogenic variants in CF transmembrane conductance regulator (CFTR). While CF is the most common hereditary disease in Caucasians, it is rare in East Asia. In the present study, we have examined clinical features and the spectrum of CFTR variants of CF patients in Japan. Clinical data of 132 CF patients were obtained from the national epidemiological survey since 1994 and CF registry. From 2007 to 2022, 46 patients with definite CF were analyzed for CFTR variants. All exons, their boundaries, and part of promoter region of CFTR were sequenced and the presence of large deletion and duplications were examined by multiplex ligation-dependent probe amplification. CF patients in Japan were found to have chronic sinopulmonary disease (85.6%), exocrine pancreatic insufficiency (66.7%), meconium ileus (35.6%), electrolyte imbalance (21.2%), CF-associated liver disease (14.4%), and CF-related diabetes (6.1%). The median survival age was 25.0 years. The mean BMI percentile was 30.3%ile in definite CF patients aged < 18 years whose CFTR genotypes were known. In 70 CF alleles of East Asia/Japan origin, CFTR-dele16-17a-17b was detected in 24 alleles, the other variants were novel or very rare, and no pathogenic variants were detected in 8 alleles. In 22 CF alleles of Europe origin, F508del was detected in 11 alleles. In summary, clinical phenotype of Japanese CF patients is similar to European patients, but the prognosis is worse. The spectrum of CFTR variants in Japanese CF alleles is entirely different from that in European CF alleles.
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Affiliation(s)
- Yuka Kozawa
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akiko Yamamoto
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Miyuki Nakakuki
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kotoyo Fujiki
- Department of Nutrition, Nagoya University of Arts and Sciences, Nisshin, Japan
| | - Shiho Kondo
- Department of Health and Nutrition, Nagoya Women's University, Nagoya, Japan
| | - Takuto Okada
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomoya Fukuyasu
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Food and Nutrition, Tsu City College, Tsu, Japan
| | - Makoto Yamaguchi
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Itsuka Taniguchi
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Nao Nomura
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Libin Liu
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mayuko Higuchi
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Erina Niwa
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshiro Sohma
- Division of Molecular Therapy, Department of Pharmaceutical Sciences, School of Pharmacy and Center for Basic Medical Research, International University of Health and Welfare, Otawara, Japan
| | | | - Yoshifumi Takeyama
- Department of Surgery, Kindai University School of Medicine, Osakasayama, Japan
| | - Hiroshi Ishiguro
- Department of Human Nutrition, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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Koumpagioti D, Moriki D, Boutopoulou B, Matziou V, Loukou I, Priftis KN, Douros K. The Association between CFTR Gene Mutation Heterozygosity and Asthma Development: A Systematic Review. J Clin Med 2023; 12:jcm12062403. [PMID: 36983403 PMCID: PMC10054146 DOI: 10.3390/jcm12062403] [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: 02/18/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Asthma is caused by complex interactions between environmental and genetic factors. Various genes have been implicated as potential risk factors in the development of asthma; among them is cystic fibrosis transmembrane conductance regulator (CFTR) gene. The aim of this systematic review was to investigate the association of CFTR mutation heterozygosity with the development of asthma, by updating the existing data with recent studies' findings. Therefore, a systematic review of the literature was conducted on Pubmed, ESBCO (Cinahl) and Scopus Databases up to December 2022. After the eligibility assessment, 17 studies were included in this review. Nine of them supported a lack of relationship between CFTR mutation heterozygosity and asthma susceptibility, and eight reported a positive association. Consequently, more extensive research is needed through high-quality studies to provide valid evidence and highlight the clinical benefits of identifying CFTR mutations in asthma patients, their impact on asthma severity, or treatment perspectives.
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Affiliation(s)
- Despoina Koumpagioti
- Department of Nursing, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Dafni Moriki
- Third Department of Pediatrics, School of Medicine, Attikon University Hospital, National and Kapodistrian University of Athens, 12462 Athens, Greece
| | - Barbara Boutopoulou
- Department of Nursing, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Vasiliki Matziou
- Department of Nursing, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Ioanna Loukou
- Department of Cystic Fibrosis, Aghia Sophia Children's Hospital, 11527 Athens, Greece
| | - Kostas N Priftis
- Third Department of Pediatrics, School of Medicine, Attikon University Hospital, National and Kapodistrian University of Athens, 12462 Athens, Greece
| | - Konstantinos Douros
- Third Department of Pediatrics, School of Medicine, Attikon University Hospital, National and Kapodistrian University of Athens, 12462 Athens, Greece
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Wahabi I, Hadj Fredj S, Nefzi M, Dabboubi R, Siala H, Khalsi F, Bousetta K, Messaoud T. Association of M470V polymorphism of CFTR gene with variability of clinical expression of asthma: Case-report study. Allergol Immunopathol (Madr) 2019; 47:159-165. [PMID: 30268379 DOI: 10.1016/j.aller.2018.06.007] [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: 03/05/2018] [Revised: 06/23/2018] [Accepted: 06/26/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION AND OBJECTIVES Asthma is a complex genetic disorder. Several genes have been found associated with asthma. The cystic fibrosis transmembrane conductance regulator (CFTR) gene is one of them. The aim of this study was to perform a comparative analysis of the genotype and allele frequency distributions of the biallelic marker M470V within the CFTR gene on mutant and wide chromosomes. PATIENTS AND METHODS The molecular approach consists in the genotyping of the M470V marker by the PCR-RFLP technique in 105 asthmatic patients, aged between four months and 17 years, and 105 healthy subjects. RESULTS We found a significant difference in the genotype frequencies between the two studied groups (χ2=9.855, P=0.007). The V/V genotype was over represented in the asthmatic group as compared to the controls (32.38% vs. 16.19%). Whereas, the M/V genotype is more frequent in healthy subjects (40.95% vs. 28.71%). We also noted a significant difference in allelic distribution of M470V with associated diseases (χ2=9.610, P=0.022). CONCLUSIONS The present study is the first report on the distribution of the M470V polymorphism in asthmatic Tunisian patients. We noticed that the M470V variant could modulate the clinical phenotype of asthmatic patients. This preliminary study will establish the molecular basis of this disease in Tunisia.
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Zhu L, Ni Z, Luo X, Zhang Z, Wang S, Meng Z, Gu X, Wang X. The outcome and the influencing factors of the age of onset in post-mortem of chronic bronchitis patients: a retrospective study. Int J Chron Obstruct Pulmon Dis 2018; 13:645-652. [PMID: 29503538 PMCID: PMC5825962 DOI: 10.2147/copd.s157084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Purpose Chronic bronchitis is thought to occur in elderly patients, and smoking seems to be an important risk factor. The outcomes related to the age of onset in patients with chronic bronchitis are still unclear. Patients and methods A retrospective study was conducted on deceased patients whose diagnosis included bronchitis from 2010 to 2016. Patients were separated into two groups according to the age of onset (Group I, age ≤50 years old; Group II, age >50 years old). Information regarding disease course, smoking history, death age, number of admissions per year, Hugh Jones Index, and self-reported comorbidities of the patients was recorded. Results The courses of chronic cough and sputum were 33.38±7.73 years and 14.44±8.60 years in Group I and Group II, respectively (p<0.05). The death ages of Group I and Group II were 77.65±7.87 years and 84.69±6.67 years, respectively (p<0.05). There was a significant negative correlation between the number of hospital admissions per year and the age of onset. The age of onset was negatively associated with daily smoking count (r=−0.210) and total smoking count (r=−0.146). In Group I, there were fewer cases of coronary heart disease (OR =0.41 [0.24–0.71]), neurological diseases (OR =0.48 [0.24–0.97]), and total comorbidities (OR =0.67 [0.54–0.85]) than in Group II. Conclusion Patients with early onset chronic bronchitis had a longer history, younger death age, poorer health status, and lower incidence of comorbidities.
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Affiliation(s)
- Linyun Zhu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
| | - Zhenhua Ni
- Central Laboratory, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xuming Luo
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
| | - Zhuhua Zhang
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
| | - Shiqiang Wang
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
| | - Ziyu Meng
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
| | - Xiandong Gu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
| | - Xiongbiao Wang
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
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Risk of asthma in heterozygous carriers for cystic fibrosis: A meta-analysis. J Cyst Fibros 2016; 15:563-7. [PMID: 27324553 DOI: 10.1016/j.jcf.2016.06.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 05/30/2016] [Accepted: 06/02/2016] [Indexed: 01/02/2023]
Abstract
BACKGROUND Patients with cystic fibrosis (CF) have a higher prevalence of asthma than the background population, however, it is unclear whether heterozygous CF carriers are susceptible to asthma. Given this, a meta-analysis is necessary to determine the veracity of the association of CF heterozygosity with asthma. METHODS We screened the medical literature from 1966 to 2015 and performed a meta-analysis to determine the risk of asthma in CF heterozygotes vs. non-carriers. RESULTS Aggregating data from 15 studies, the odds ratio for asthma in CF heterozygotes compared with non-carriers was significantly elevated at 1.61 (95% CI: 1.18-2.21). When analyzing the studies considered of high quality in which asthma was diagnosed by a physician, the patients were >18years, or study size was ≥500, the trend remained the same, that heterozygous carriers of CF had elevated risk for asthma. CONCLUSIONS The results show that heterozygous carriers for CF have a higher risk of asthma than non-carriers.
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Singh M, Rebordosa C, Bernholz J, Sharma N. Epidemiology and genetics of cystic fibrosis in Asia: In preparation for the next-generation treatments. Respirology 2015; 20:1172-81. [PMID: 26437683 DOI: 10.1111/resp.12656] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 06/18/2015] [Accepted: 07/27/2015] [Indexed: 12/11/2022]
Abstract
Cystic fibrosis (CF) in the Asian population is less frequently reported due to under-diagnosis and lack of centralized CF patient registries. Clinical studies on CF cases from Asia have documented a severe course of the disease. The spectrum of the cystic fibrosis transmembrane conductance regulator (CFTR) variants in this population is quite heterogeneous. In total, 166 variants have been reported on approximately 3700 Asian CF chromosomes. The frequency of F508del among Asians is low compared with Caucasians. Recent in vitro studies have shown promise of small molecule correction and potentiation of 45 different CFTR variants. Of these variants, 16 (including G551D and F508del) have also been observed among Asian CF individuals. We suggest undertaking molecular studies extensively to annotate CFTR variants that will help Asian CF individuals to benefit from the precision medicine gaining momentum in the Western countries.
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Affiliation(s)
- Meenu Singh
- Department of Pediatrics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Cristina Rebordosa
- Department of Epidemiology, Division of Drug Safety and Epidemiology, Novartis Farmaceutica S.A., Barcelona, Spain
| | - Juliane Bernholz
- Department of Development, Division of Pharma, Novartis Pharma AG, Basel, Switzerland
| | - Neeraj Sharma
- McKusick-Nathans Institute of Genetic Medicine and Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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