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Chen M, Shen MC, Chang SP, Ma GC, Lee DJ, Yan A. De Novo Noninversion Variants Implicated in Sporadic Hemophilia A: A Variant Origin and Timing Study. Int J Mol Sci 2024; 25:1763. [PMID: 38339041 PMCID: PMC10855912 DOI: 10.3390/ijms25031763] [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: 11/15/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Sporadic hemophilia A (HA) enables the persistence of HA in the population. F8 gene inversion originates mainly in male germ cells during meiosis. To date, no studies have shown the origin and timing of HA sporadic noninversion variants (NIVs); herein, we assume that HA-sporadic NIVs are generated as a de novo variant. Of the 125 registered families with HA, 22 were eligible for inclusion. We conducted a linkage analysis using F8 gene markers and amplification refractory mutation system-quantitative polymerase chain reaction to confirm the origin of the sporadic NIVs (~0% mutant cells) or the presence of a mosaic variant, which requires further confirmation of the origin in the parent. Nine mothers, four maternal grandmothers, and six maternal grandfathers were confirmed to be the origin of sporadic NIVs, which most likely occurred in the zygote within the first few cell divisions and in single sperm cells, respectively. Three mothers had mosaic variants, which most likely occurred early in postzygotic embryogenesis. All maternal grandparents were free from sporadic NIV. In conclusion, F8 NIVs in sporadic HA were found to be caused primarily by de novo variants. Our studies are essential for understanding the genetic pathogenesis of HA and improving current genetic counseling.
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Affiliation(s)
- Ming Chen
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (M.C.); (S.-P.C.); (G.-C.M.); (D.-J.L.); (A.Y.)
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua 500, Taiwan
- Department of Medical Genetics National Taiwan University Hospital, Taipei 100, Taiwan
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Ming-Ching Shen
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei 100, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 100, Taiwan
- Hemophilia Treatment and Thrombosis Center, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Shun-Ping Chang
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (M.C.); (S.-P.C.); (G.-C.M.); (D.-J.L.); (A.Y.)
| | - Gwo-Chin Ma
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (M.C.); (S.-P.C.); (G.-C.M.); (D.-J.L.); (A.Y.)
| | - Dong-Jay Lee
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (M.C.); (S.-P.C.); (G.-C.M.); (D.-J.L.); (A.Y.)
| | - Adeline Yan
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (M.C.); (S.-P.C.); (G.-C.M.); (D.-J.L.); (A.Y.)
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Huang P, Lan Y, Zhou H, Lin L, Shu J, Wang C, Zhao X, Liang L, He S, Mou J, Zhang X, Qiu Q, Wei H. Comprehensive application of multiple molecular diagnostic techniques in pre-implantation genetic testing for monogenic. Mol Genet Genomic Med 2024; 12:e2293. [PMID: 37828787 PMCID: PMC10767435 DOI: 10.1002/mgg3.2293] [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: 03/08/2023] [Revised: 09/05/2023] [Accepted: 09/19/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Pre-implantation genetic testing for monogenic disorders (PGT-M) is an effective approach to reducing the incidence of birth defects by preventing the transmission of inherited diseases to offspring. However, there are still controversies regarding the detection methods and transplantation of embryos. This paper aims to evaluate the effectiveness of different detection technologies applied to PGT-M through a retrospective analysis of clinical detection data. METHODS The carrier status of pathogenic mutations and chromosomal copy number variants (CNVs) in 892 embryos was characterized using next-generation sequencing (NGS), single-nucleotide polymorphism (SNP) array, and PCR-based detection technologies. Clinical data from PGT-M cases were retrospectively analyzed to assess the effectiveness of these detection methods in identifying genetic abnormalities in embryos. RESULTS A total of 829 embryos were analyzed, with 63 being unsuccessful. Our study revealed that the success rate of detecting deletional mutations using Gap-PCR 84.9%, which is lower than that of SNP array (98.7%) and NGS (92.5%). However, no significant difference was observed when detecting point mutations using any of the methods. These findings suggest that, when detecting deletional mutations, SNP array and NGS are more suitable choices compared to Gap-PCR. While SNP array may have a lower resolution and success rate (80.5%) in analyzing CNVs compared to NGS (95.5%), it may still be useful for revealing certain abnormal types. CONCLUSION In conclusion, this study found that SNP analysis is advantageous for identifying polygenic and deletional mutations, whereas NGS is more cost-efficient for detecting common monogenic diseases. Additionally, SNP-based haplotyping and PCR-based direct detection of mutations can be used together to enhance the accuracy and success rates of PGT-M. Our findings offer valuable insights for PGT technicians in choosing suitable detection methods for patients.
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Affiliation(s)
- Peng Huang
- PGD LaboratoryMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Yueyun Lan
- PGD LaboratoryMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Hong Zhou
- Reproductive CenterMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
| | - Luye Lin
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Jinhui Shu
- Reproductive CenterMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
| | - Caizhu Wang
- Reproductive CenterMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
| | - Xin Zhao
- Reproductive CenterMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
| | - Lifang Liang
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Sheng He
- PGD LaboratoryMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Jingfei Mou
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Xiaofei Zhang
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Qingming Qiu
- PGD LaboratoryMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
| | - Hongwei Wei
- PGD LaboratoryMaternal and Child Health Hospital of Guangxi Zhuang Autonomous RegionNanningChina
- Birth Defects Prevention and Control Institute of Guangxi Zhuang Autonomous RegionNanningChina
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Bui TMP, Tran VK, Nguyen TTH, Le TP, Nguyen TM, Tran HA, Luu VD, Nguyen MH, Bui TH, Van Ta T, Tran TH. Preimplantation genetic testing (PGT) for hemophilia A: Experience from one center. Taiwan J Obstet Gynecol 2022; 61:1009-1014. [DOI: 10.1016/j.tjog.2021.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2021] [Indexed: 11/24/2022] Open
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4
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Chen M, Shen MC, Chang SP, Ma GC, Huang YC, Lin CY. Origin and timing of de novo variants implicated in type 2 von Willebrand disease. J Cell Mol Med 2022; 26:5403-5413. [PMID: 36226571 PMCID: PMC9639050 DOI: 10.1111/jcmm.17563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/30/2022] [Accepted: 09/11/2022] [Indexed: 12/03/2022] Open
Abstract
Very few studies have shown the real origin and timing of de novo variants (DNV) implicated in von Willebrand disease (VWD). We investigated four families with type 2 VWD. First, we conducted linkage analysis using single nucleotide variant genotyping to recognize the possible provenance of DNV. Second, we performed amplification refractory mutation system‐quantitative polymerase chain reaction to confirm the real origin of variant (~0% mutant cells) or presence of a genetic mosaic variant (0%–50% mutant cells) in three embryonic germ layer‐derived tissues and sperm cells. Then, three possible timings of DNV were categorized based on the relative likelihood of occurrence according to the number of cell divisions during embryogenesis. Two each with type 2B VWD (proband 1 p.Arg1308Cys, proband 4 p.Arg1306Trp) and type 2A VWD (proband 2 p.Leu1276Arg, proband 3 p.Ser1506Leu) were identified. Variant origins were identified for families 1, 2 and 3 and confirmed to originate from the mother, father and father, respectively. However, the father of family 4 was confirmed to have isolated germline mosaicism with 2.2% mutant sperm cells. Further investigation confirmed the paternal grandfather to be the origin of variant. Thus, we proposed that DNV originating from the two fathers most likely occurred at the single sperm cell, the one originating from the mother occurred at the zygote during the first few cellular divisions; alternatively, in family 4, the DNV most likely occurred at the early postzygotic development in the father. Our findings are essential for understanding genetic pathogenesis and providing accurate genetic counselling.
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Affiliation(s)
- Ming Chen
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua, Taiwan.,Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Ching Shen
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan.,Department of Laboratory Medicine and Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Shun-Ping Chang
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Gwo-Chin Ma
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Ying-Chih Huang
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Ching-Yeh Lin
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
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Yang IJ, Tu YA, Pan SP, Huang TC, Chen CL, Lin MW, Tsai YY, Yao YL, Su YN, Chen SU. First report of a successful pregnancy by preimplantation genetic testing for Beckwith-Wiedemann syndrome. Taiwan J Obstet Gynecol 2022; 61:174-179. [PMID: 35181034 DOI: 10.1016/j.tjog.2021.11.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2020] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE Beckwith-Wiedemann syndrome (BWS) is a rare imprinting gene disorder. Maternal CDKN1C mutation comprises 5% of etiologies of BWS. There is no successful report of preventing BWS by preimplantation genetic testing for monogenic disease (PGT-M) in the literature. Is PGT-M applicable for preventing BWS ? CASE REPORT This 39-year-old woman conceived naturally and delivered a boy who was diagnosed of BWS. The genetic testing of her son revealed CDKN1C gene mutation, and of the mother showed a carrier of the same mutation. She underwent controlled ovarian stimulation, oocyte pickup, and intracytoplasmic sperm injection. Trophectoderm biopsies were performed and samples were checked for PGT. Two wild-type and euploid embryos were thawed and transferred. One intrauterine pregnancy was achieved. The patient delivered a healthy female baby at 37 weeks of gestation. CONCLUSION In this case, we first report a successful pregnancy with a wild-type CDKN1C gene baby achieved by PGT-M.
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Affiliation(s)
- Ih-Jane Yang
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-An Tu
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Song-Po Pan
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ting-Chi Huang
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chih-Ling Chen
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Wei Lin
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Yi Tsai
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Lin Yao
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Ning Su
- Sofiva Genomics Co, Ltd., Taipei, Taiwan; Dianthus Maternal Fetal Medicine Clinic, Taipei, Taiwan
| | - Shee-Uan Chen
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan.
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Preimplantation Genetic Diagnosis in Hereditary Hearing Impairment. Diagnostics (Basel) 2021; 11:diagnostics11122395. [PMID: 34943631 PMCID: PMC8700639 DOI: 10.3390/diagnostics11122395] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/16/2021] [Accepted: 12/16/2021] [Indexed: 01/19/2023] Open
Abstract
Sensorineural hearing impairment is a common sensory deficit in children and more than 50% of these cases are caused by genetic etiologies, that is, hereditary hearing impairment (HHI). Recent advances in genomic medicine have revolutionized the diagnostics of, and counseling for, HHI, including preimplantation genetic diagnosis (PGD), thus providing parents-to-be with better reproductive choices. Over the past decade, we have performed PGD using the amplification refractory mutation system quantitative polymerase chain reaction (ARMS-qPCR) technique in 11 couples with a history of HHI, namely eight with GJB2 variants, one with OTOF variants, one with SLC26A4 variants, and one with an MITF variant. We demonstrated that PGD can be successfully applied to HHI of different inheritance modes, namely autosomal dominant or recessive, and phenotypes, namely syndromic or non-syndromic HHI. However, certain ethical concerns warrant scrutiny before PGD can be widely applied to at-risk couples with a history of HHI.
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Chang TY, Chen SW, Lin WH, Huang CE, Evans MI, Chung IF, Wu JW, Ma GC, Chen M. Comparison of Genetic Profiling between Primary Tumor and Circulating Tumor Cells Captured by Microfluidics in Epithelial Ovarian Cancer: Tumor Heterogeneity or Allele Dropout? Diagnostics (Basel) 2021; 11:diagnostics11061102. [PMID: 34208639 PMCID: PMC8234832 DOI: 10.3390/diagnostics11061102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/11/2021] [Accepted: 06/14/2021] [Indexed: 01/16/2023] Open
Abstract
Epithelial ovarian cancer (EOC) is a leading cause of cancer mortality among women but unfortunately is usually not diagnosed until advanced stage. Early detection of EOC is of paramount importance to improve outcomes. Liquid biopsy of circulating tumor cells (CTCs) is emerging as one of the promising biomarkers for early detection of solid tumors. However, discrepancies in terms of oncogenomics (i.e., different genetic defects detected) between the germline, primary tumor, and liquid biopsy are a serious concern and may adversely affect downstream cancer management. Here, we illustrate the potential and pitfalls of CTCs by presenting two patients of Stage I EOC. We successfully isolated and recovered CTCs by a silicon-based nanostructured microfluidics system, the automated Cell RevealTM. We examined the genomics of CTCs as well as the primary tumor and germline control (peripheral blood mononuclear cells) by whole exome sequencing. Different signatures were then investigated by comparisons of identified mutation loci distinguishing those that may only arise in the primary tumor or CTCs. A novel model is proposed to test if the highly variable allele frequencies, between primary tumor and CTCs results, are due to allele dropout in plural CTCs or tumor heterogeneity. This proof-of-principle study provides a strategy to elucidate the possible cause of genomic discrepancy between the germline, primary tumor, and CTCs, which is helpful for further large-scale use of such technology to be integrated into clinical management protocols.
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Affiliation(s)
- Ting-Yu Chang
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 50046, Taiwan;
- Department of Research, Changhua Christian Hospital, Changhua 50006, Taiwan
- Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan 32023, Taiwan
| | - Sheng-Wen Chen
- Department of Electrical Engineering, National Chung Cheng University, Chiayi 62102, Taiwan;
- Cytoaurora Biotechnologies Inc., Hsinchu Science Park, Hsinchu 30261, Taiwan;
| | - Wen-Hsiang Lin
- Welgene Biotechnology Company, Nangang Business Park, Taipei 11503, Taiwan;
| | - Chung-Er Huang
- Cytoaurora Biotechnologies Inc., Hsinchu Science Park, Hsinchu 30261, Taiwan;
| | - Mark I. Evans
- Comprehensive Genetics, New York, NY 10065, USA;
- Department of Obstetrics and Gynecology, Icahn School of Medicine at Mt. Sinai, New York, NY 10029, USA
| | - I-Fang Chung
- Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan;
| | - Janne-Wha Wu
- Department of Electrical Engineering, National Chung Cheng University, Chiayi 62102, Taiwan;
- Department of Communications Engineering, National Chung Cheng University, Chiayi 62102, Taiwan
- Correspondence: (J.-W.W.); (G.-C.M.); (M.C.); Tel.: +886-5-272-0411 (ext. 33519) (J.-W.W.); +886-4-723-8595 (ext. 2319) (G.-C.M.); +886-4-723-8595 (ext. 2323) (M.C.)
| | - Gwo-Chin Ma
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 50046, Taiwan;
- Department of Research, Changhua Christian Hospital, Changhua 50006, Taiwan
- Department of Biomedical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan
- Correspondence: (J.-W.W.); (G.-C.M.); (M.C.); Tel.: +886-5-272-0411 (ext. 33519) (J.-W.W.); +886-4-723-8595 (ext. 2319) (G.-C.M.); +886-4-723-8595 (ext. 2323) (M.C.)
| | - Ming Chen
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua 50046, Taiwan;
- Department of Research, Changhua Christian Hospital, Changhua 50006, Taiwan
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei 100225, Taiwan
- Department of Biomedical Science, Dayeh University, Changhua 515006, Taiwan
- Department of Medical Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
- Correspondence: (J.-W.W.); (G.-C.M.); (M.C.); Tel.: +886-5-272-0411 (ext. 33519) (J.-W.W.); +886-4-723-8595 (ext. 2319) (G.-C.M.); +886-4-723-8595 (ext. 2323) (M.C.)
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Liao CH, Chang MY, Ma GC, Chang SP, Lin CF, Lin WH, Chen HF, Chen SU, Lee YC, Chao CC, Chen M, Hsieh ST. Preimplantation Genetic Diagnosis of Neurodegenerative Diseases: Review of Methodologies and Report of Our Experience as a Regional Reference Laboratory. Diagnostics (Basel) 2019; 9:E44. [PMID: 31018485 PMCID: PMC6627755 DOI: 10.3390/diagnostics9020044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/02/2019] [Accepted: 04/09/2019] [Indexed: 12/31/2022] Open
Abstract
Preimplantation genetic diagnosis (PGD) has become a crucial approach in helping carriers of inherited disorders to give birth to healthy offspring. In this study, we review PGD methodologies and explore the use of amplification refractory mutation system quantitative polymerase chain reaction (ARMS-qPCR) and/or linkage analysis for PGD in neurodegenerative diseases that are clinically relevant with typical features, such as late onset, and which are severely debilitating. A total of 13 oocyte retrieval cycles were conducted in 10 cases with various neurodegenerative diseases. Among the 59 embryos analyzed, 49.2% (29/59) were unaffected and 50.8% (30/59) were affected. Of the 12 embryo transfer cycles, three resulted in pregnancy, and all pregnancies were delivered. The implantation rate and livebirth rate were 23.1% (3/13) per oocyte retrieval cycle and 25.0% (3/12) per embryo transfer cycle. Allele dropout (ADO) was noted in two embryos that were classified as unaffected by ARMS-qPCR but were evidenced as affected after prenatal diagnosis, rendering the false negative rate as 6.3% (2/32). Four among the 13 cycles underwent PGD by ARMS-qPCR coupled with linkage analysis, and all were correctly diagnosed. We conclude that PGD by ARMS-qPCR and/or linkage analysis is a feasible strategy, whereas ADO is a concern when ARMS-qPCR is used as the sole technology in PGD, especially in autosomal dominant diseases.
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Affiliation(s)
- Chun-Hua Liao
- Department of Pediatrics, National Taiwan University Children's Hospital, Taipei 10041, Taiwan.
| | - Ming-Yuh Chang
- Division of Pediatric Neurology, Department of Pediatrics, Changhua Christian Children's Hospital, Changhua 50050, Taiwan.
| | - Gwo-Chin Ma
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua 50046, Taiwan.
- Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua Christian Hospital, Changhua 50046, Taiwan.
- Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan.
| | - Shun-Ping Chang
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua 50046, Taiwan.
- Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua Christian Hospital, Changhua 50046, Taiwan.
| | - Chi-Fang Lin
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei 10041, Taiwan.
| | - Wen-Hsiang Lin
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua 50046, Taiwan.
- Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua Christian Hospital, Changhua 50046, Taiwan.
| | - Hsin-Fu Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei 10041, Taiwan.
- Graduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei 10051, Taiwan.
| | - Shee-Uan Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei 10041, Taiwan.
| | - Yi-Chung Lee
- Department of Neurology, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
| | - Chi-Chao Chao
- Department of Neurology, National Taiwan University Hospital, Taipei 10048, Taiwan.
| | - Ming Chen
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua 50046, Taiwan.
- Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua Christian Hospital, Changhua 50046, Taiwan.
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei 10041, Taiwan.
- Department of Life Science, Tunghai University, Taichung 40704, Taiwan.
- Department of Molecular Biotechnology, Da-Yeh University, Changhua 51591, Taiwan.
| | - Sung-Tsang Hsieh
- Department of Neurology, National Taiwan University Hospital, Taipei 10048, Taiwan.
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan.
- Graduate Institute of Brain and Mind Sciences, College of Medicine, National Taiwan University, Taipei 10051, Taiwan.
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Dai L, Ding C, Fang F. A novel DDC gene deletion mutation in two Chinese mainland siblings with aromatic l-amino acid decarboxylase deficiency. Brain Dev 2019; 41:205-209. [PMID: 30144970 DOI: 10.1016/j.braindev.2018.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 08/07/2018] [Accepted: 08/08/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND Aromatic l-amino acid decarboxylase (AADC) deficiency (OMIM #608643) is a rare and severe disorder of biogenic amine synthesis caused by mutations in the DDC gene. The phenomenology of the movement disorder includes intermittent oculogyric crises and limb dystonia, generalized athetosis, and impaired voluntary movement. OBJECTIVE To identify clinical manifestations and DDC gene mutations in two Chinese mainland children who are siblings with AADC deficiency. METHODS We used targeted next-generation sequencing and quantitative polymerase chain reaction (qPCR) to reveal DDC mutations in these children. RESULTS Two DDC gene mutations were found: one missense mutation, c.1040G > A (p.Arg347Gln), is a reported mutation derived from the mother; the other mutation, a whole-exon 11 and 12 deletion, is a novel mutation derived from the father. The index patient and her brother both had poor sucking power and feeding difficulty at birth and episodes of oculogyric crises, truncal hypotonia, limb hypertonia, sleep disturbances, irritability, and motor delay. The siblings both died at 1 year and 10 months due to asphyxia and pneumonia during gaze and hypertonia episodes. CONCLUSION This study identified a novel DDC gene deletion mutation in two siblings with AADC deficiency disease in the Chinese mainland population.
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Affiliation(s)
- Lifang Dai
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center For Children's Health, 100045, China
| | - Changhong Ding
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center For Children's Health, 100045, China.
| | - Fang Fang
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center For Children's Health, 100045, China.
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Chen HF, Chen SU, Ma GC, Hsieh ST, Tsai HD, Yang YS, Chen M. Preimplantation genetic diagnosis and screening: Current status and future challenges. J Formos Med Assoc 2017; 117:94-100. [PMID: 28888353 DOI: 10.1016/j.jfma.2017.08.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 08/22/2017] [Indexed: 02/08/2023] Open
Abstract
Preimplantation genetic diagnosis (PGD) is a clinically feasible technology to prevent the transmission of monogenic inherited disorders in families afflicted the diseases to the future offsprings. The major technical hurdle is it does not have a general formula for all mutations, thus different gene locus needs individualized, customized design to make the diagnosis accurate enough to be applied on PGD, in which the quantity of DNA is scarce, whereas timely result is sometimes requested if fresh embryo transfer is desired. On the other hand, preimplantation genetic screening (PGS) screens embryo with aneuploidy and was also known as PGD-A (A denotes aneuploidy) in order to enhance the implantation rates as well as livebirth rates. In contrasts to PGD, PGS is still under ferocious debate, especially recent reports found that euploid babies were born after transferring the aneuploid embryos diagnosed by PGS back to the womb and only very few randomized trials of PGS are available in the literature. We have been doing PGD and/or PGS for more than 10 years as one of the core PGD/PGS laboratories in Taiwan. Here we provide a concise review of PGD/PGS regarding its current status, both domestically and globally, as well as its future challenges.
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Affiliation(s)
- Hsin-Fu Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan; Graduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shee-Uan Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan
| | - Gwo-Chin Ma
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan; Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan; Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan; Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, Taichung, Taiwan
| | - Sung-Tsang Hsieh
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan; Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Brain and Mind Sciences, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Horng-Der Tsai
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan
| | - Yu-Shih Yang
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan; Department of Obstetrics and Gynecology, Fu-Jen Catholic University Hospital, New Taipei, Taiwan
| | - Ming Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan; Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan; Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan; Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan; Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan; Department of Life Science, Tunghai University, Taichung, Taiwan.
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11
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Wassenberg T, Molero-Luis M, Jeltsch K, Hoffmann GF, Assmann B, Blau N, Garcia-Cazorla A, Artuch R, Pons R, Pearson TS, Leuzzi V, Mastrangelo M, Pearl PL, Lee WT, Kurian MA, Heales S, Flint L, Verbeek M, Willemsen M, Opladen T. Consensus guideline for the diagnosis and treatment of aromatic l-amino acid decarboxylase (AADC) deficiency. Orphanet J Rare Dis 2017; 12:12. [PMID: 28100251 PMCID: PMC5241937 DOI: 10.1186/s13023-016-0522-z] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 10/04/2016] [Indexed: 01/17/2023] Open
Abstract
Aromatic L-amino acid decarboxylase deficiency (AADCD) is a rare, autosomal recessive neurometabolic disorder that leads to a severe combined deficiency of serotonin, dopamine, norepinephrine and epinephrine. Onset is early in life, and key clinical symptoms are hypotonia, movement disorders (oculogyric crisis, dystonia, and hypokinesia), developmental delay, and autonomic symptoms.In this consensus guideline, representatives of the International Working Group on Neurotransmitter Related Disorders (iNTD) and patient representatives evaluated all available evidence for diagnosis and treatment of AADCD and made recommendations using SIGN and GRADE methodology. In the face of limited definitive evidence, we constructed practical recommendations on clinical diagnosis, laboratory diagnosis, imaging and electroencephalograpy, medical treatments and non-medical treatments. Furthermore, we identified topics for further research. We believe this guideline will improve the care for AADCD patients around the world whilst promoting general awareness of this rare disease.
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Affiliation(s)
- Tessa Wassenberg
- Department of Neurology and Child Neurology, Radboud university medical center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Marta Molero-Luis
- Department of Clinical Biochemistry, CIBERER-ISCIII, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
| | - Kathrin Jeltsch
- Department of Child Neurology and Metabolic Disorders, University Children’s Hospital, Heidelberg, Germany
| | - Georg F. Hoffmann
- Department of Child Neurology and Metabolic Disorders, University Children’s Hospital, Heidelberg, Germany
| | - Birgit Assmann
- Department of Child Neurology and Metabolic Disorders, University Children’s Hospital, Heidelberg, Germany
| | - Nenad Blau
- Dietmar-Hopp Metabolic Center, University Children’s Hospital Heidelberg, Heidelberg, Germany
| | - Angeles Garcia-Cazorla
- Department of Child Neurology, CIBERER-ISCIII, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
| | - Rafael Artuch
- Department of Clinical Biochemistry, CIBERER-ISCIII, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
| | - Roser Pons
- First Department of Pediatrics, Pediatric Neurology Unit, Agia Sofia Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Toni S. Pearson
- Department of Neurology, Washington University School of Medicine, St. Louis, USA
| | - Vincenco Leuzzi
- Department of Pediatrics and Child Neuropsychiatry, Sapienza Università di Roma, Rome, Italy
| | - Mario Mastrangelo
- Department of Pediatrics and Child Neuropsychiatry, Sapienza Università di Roma, Rome, Italy
| | - Phillip L. Pearl
- Department of Epilepsy and Clinical Neurophysiology, Boston Children’s Hospital, Harvard Medical School, Boston, USA
| | - Wang Tso Lee
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Manju A. Kurian
- Developmental Neurosciences, UCL- Institute of Child Health and Department of Neurology, Great Ormond Street Hospital for Children NHS Foundations Trust, London, UK
| | - Simon Heales
- Laboratory Medicine, Great Ormond Street Hospital and Neurometabolic Unit, National Hospital, London, UK
| | | | - Marcel Verbeek
- Department of Neurology and Child Neurology, Radboud university medical center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
- Department Laboratory Medicine, Alzheimer Centre, Radboud university medical center, Nijmegen, The Netherlands
| | - Michèl Willemsen
- Department of Neurology and Child Neurology, Radboud university medical center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Thomas Opladen
- Department of Child Neurology and Metabolic Disorders, University Children’s Hospital, Heidelberg, Germany
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12
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Shen MC, Chen M, Ma GC, Chang SP, Lin CY, Lin BD, Hsieh HN. De novo mutation and somatic mosaicism of gene mutation in type 2A, 2B and 2M VWD. Thromb J 2016; 14:36. [PMID: 27766062 PMCID: PMC5056463 DOI: 10.1186/s12959-016-0092-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Von Willebrand disease (VWD) is not uncommon in Taiwan. In type 2 or type 3 VWD hemorrhagic symptoms are severer and laboratory data relatively more distinctive. De novo mutation and somatic mosaicism of type 2 VWD gene were rarely reported. Therefore clinical, laboratory and genetic studies of only type 2A, 2B and 2M VWD will be presented and issues of de novo mutation and somatic mosaicism will be explored. Methods Fifty-four patients belonging to 23 unrelated families from all around the country in whom type 2 VWD exclusive of type 2N has been diagnosed not only by clinical and routine laboratory studies but also by genetic confirmation during 1990–2015 were investigated. A novel technique named amplification refractory mutation system-quantitative polymerase chain reaction (ARMS-qPCR) was used to confirm the presence of somatic mosaicism. Informed consent was obtained for study. Results De novo mutation was identified in 4 families among 15 families (26.7 %) in whom family members including parents were available for examination. All their parents were free from bleeding symptoms and had no similar mutation as their respective affected daughter. An interesting example of somatic mosaicism of VWF gene mutation was found in a large family with type 2A VWD. The father carrying a mutated VWF gene, p.Arg1597Trp, transmitted this mutation to his 3 daughters, 1 son, 3 granddaughters and 2 grandsons. However, the father had normal laboratory findings and experienced no abnormal bleeding, while his offspring who inherited the mutation showed abnormal laboratory findings compatible with type 2A VWD and had history of abnormal bleedings. ARMS-qPCR revealed that the father had only 25.5 % mutant in his blood cells and 31.1 % mutant in his oral mucosal cells, while all his offspring had about 49 % mutant in their blood cells. Conclusion De novo mutation of type 2 VWD gene was identified in 4 out of 15 families (26.7 %) examined. Since only one child was affected in each family, germline mosaicism was not likely. A somatic mosaicism of type 2A VWD gene was documented in a big family by a newly in-house developed technique ARMS-qPCR.
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Affiliation(s)
- Ming-Ching Shen
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, 100 Taiwan.,Department of Internal Medicine, Changhua Christian Hospital, Changhua, 500 Taiwan
| | - Ming Chen
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua, 500 Taiwan.,Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, 100 Taiwan.,Department of Medical Genetics, National Taiwan University Hospital, Taipei, 100 Taiwan
| | - Gwo-Chin Ma
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua, 500 Taiwan
| | - Shun-Ping Chang
- Department of Genomic Medicine, Changhua Christian Hospital, Changhua, 500 Taiwan
| | - Ching-Yeh Lin
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, 500 Taiwan
| | - Bo-Do Lin
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, 500 Taiwan
| | - Han-Ni Hsieh
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, 500 Taiwan
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13
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Chen M, Chang SP, Ma GC, Lin WH, Chen HF, Chen SU, Tsai HD, Tsai FP, Shen MC. Preimplantation genetic diagnosis of hemophilia A. Thromb J 2016; 14:33. [PMID: 27766059 PMCID: PMC5056473 DOI: 10.1186/s12959-016-0098-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Preimplantation genetic diagnosis (PGD) is a powerful tool to tackle the transmission of monogenic inherited disorders in families carrying the diseases from generation to generation. It currently remains a challenging task, despite PGD having been developed over 25 years ago. The major difficulty is it does not have an easy and general formula for all mutations. Different gene locus needs individualized, customized design to make the diagnosis accurate enough to be applied on PGD, in which the quantity of DNA is scanty, whereas timely laboratory diagnosis is mandatory if fresh embryo transfer is desired occasionally. Indicators for outcome assessment of a successful PGD program include the successful diagnosis rate on blastomeres (Day 3 cleavage-stage embryo biopsy) or trophectoderm cells (Day 5/6 blastocyst biopsy), the implantation rate per embryo transferred, and the livebirth rate per oocyte retrieval cycle. Hemophilia A (HA) is an X-linked recessive bleeding disorder caused by various types of pathological defects in the factor VIII gene (F8). The mutation spectrum of the F8 is complex, according to our previous report, including large segmental intra-gene inversions, large segmental deletions spanning a few exons, point mutations, and total deletion caused by chromosomal structural rearrangements. In this review, the molecular methodologies used to tackle different mutants of the F8 in the PGD of HA are to be explained, and the experiences of successful use of amplification refractory mutation system-quantitative polymerase chain reaction (ARMS-qPCR) and linkage analysis for PGD of HA in our laboratory are also provided.
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Affiliation(s)
- Ming Chen
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan.,Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan.,Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan.,Department of Life Science, Tunghai University, Taichung, Taiwan.,Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan
| | - Shun-Ping Chang
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan
| | - Gwo-Chin Ma
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan.,Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, Taichung, Taiwan
| | - Wen-Hsian Lin
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan
| | - Hsin-Fu Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan
| | - Shee-Uan Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan
| | - Horng-Der Tsai
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
| | - Feng-Po Tsai
- Po-Yuan Women's Clinic and IVF Center, Changhua, Taiwan
| | - Ming-Ching Shen
- Department of Internal Medicine, and Thrombosis and Hemostasis Center, Changhua Christian Hospital, Changhua, Taiwan
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