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Zhang Z, Zhang X, Xue H, Chu L, Hu L, Bi X, Zhu P, Zhang D, Chen J, Cui X, Kong L, Liang B, Wu X. Preimplantation genetic testing as a means of preventing hereditary congenital myasthenic syndrome caused by RAPSN. Mol Genet Genomic Med 2024; 12:e2409. [PMID: 38511267 PMCID: PMC10955331 DOI: 10.1002/mgg3.2409] [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: 09/21/2023] [Revised: 01/30/2024] [Accepted: 02/13/2024] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Congenital myasthenic syndrome is a heterogeneous group of inherited neuromuscular transmission disorders. Variants in RAPSN are a common cause of CMS, accounting for approximately 14%-27% of all CMS cases. Whether preimplantation genetic testing for monogenic disease (PGT-M) could be used to prevent the potential birth of CMS-affected children is unclear. METHODS Application of WES (whole-exome sequencing) for carrier testing and guidance for the PGT-M in the absence of a genetically characterized index patient as well as assisted reproductive technology were employed to prevent the occurrence of birth defects in subsequent pregnancy. The clinical phenotypes of stillborn fetuses were also assessed. RESULTS The family carried two likely pathogenic variants in RAPSN(NM_005055.5): c.133G>A (p.V45M) and c.280G>A (p.E94K). And the potential birth of CMS-affected child was successfully prevented, allowing the family to have offspring devoid of disease-associated variants and exhibiting a normal phenotype. CONCLUSION This report constitutes the first documented case of achieving a CMS-free offspring through PGT-M in a CMS-affected family. By broadening the known variant spectrum of RAPSN in the Chinese population, our findings underscore the feasibility and effectiveness of PGT-M for preventing CMS, offering valuable insights for similarly affected families.
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Affiliation(s)
- Zhiping Zhang
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | - Xueluo Zhang
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | - Huiqin Xue
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | - Liming Chu
- Basecare Medical Device Co., LtdSuzhouChina
| | - Lina Hu
- Basecare Medical Device Co., LtdSuzhouChina
| | - Xingyu Bi
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | - Pengfei Zhu
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | - Dongdong Zhang
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | - Jiayao Chen
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | - Xiangrong Cui
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
| | | | - Bo Liang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
| | - Xueqing Wu
- Center of Reproductive MedicineAffiliated Children's Hospital of Shanxi & Women Health Center of Shanxi Medicine UniversityTaiyuanShanxiChina
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Zhao W, Song Y, Huang C, Xu S, Luo Q, Yao R, Sun N, Liang B, Fei J, Gao F, Huang J, Qu S. Development of preimplantation genetic testing for monogenic reference materials using next-generation sequencing. BMC Med Genomics 2024; 17:33. [PMID: 38262988 PMCID: PMC10807056 DOI: 10.1186/s12920-024-01803-z] [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: 08/11/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024] Open
Abstract
OBJECTIVE Preimplantation genetic testing for monogenic disorders (PGT-M) has been used for over 20 years to detect many serious genetic conditions. However, there is still a lack of reference materials (RMs) to validate the test performance during the development and quality control of PGT-M. METHOD Sixteen thalassemia cell lines from four thalassemia families were selected to establish the RMs. Each family consisted of parents with heterozygous mutations for α- and/or β-thalassemia and two children, at least one of whom carried a homozygous thalassemia mutation (proband). The RM panel consisted of 12 DNA samples (parents and probands in 4 families) and 4 simulated embryos (cell lines constructed from blood samples from the four nonproband children). Four accredited genetics laboratories that offer verification of thalassemia samples were invited to evaluate the performance of the RM panel. Furthermore, the stability of the RMs was determined by testing after freeze‒thaw cycles and long-term storage. RESULTS PGT-M reference materials containing 12 genome DNA (gDNA) reference materials and 4 simulated embryo reference materials for thalassemia testing were successfully established. Next-generation sequencing was performed on the samples. The genotypes and haplotypes of all 16 PGT-M reference materials were concordant across the four labs, which used various testing workflows. These well-characterized PGT-M reference materials retained their stability even after 3 years of storage. CONCLUSION The establishment of PGT-M reference materials for thalassemia will help with the standardization and accuracy of PGT-M in clinical use.
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Affiliation(s)
- Weihua Zhao
- Department of Obstetrics, Shenzhen Second People's Hospital/the First Affiliated Hospital of Shenzhen University Health, Shenzhen, Guangdong, China
| | | | - Chuanfeng Huang
- Division of Physical and Chemical Testing, Division of in Vitro Diagnostic Reagents, National Institutes for food and drug Control (NIFDC), Beijing, China
| | - Shan Xu
- BGI-Shenzhen, Guangdong, Shenzhen, China
| | - Qi Luo
- Department of Obstetrics, Shenzhen Second People's Hospital/the First Affiliated Hospital of Shenzhen University Health, Shenzhen, Guangdong, China
| | - Runsi Yao
- Department of Obstetrics, Shenzhen Second People's Hospital/the First Affiliated Hospital of Shenzhen University Health, Shenzhen, Guangdong, China
| | - Nan Sun
- Division of Physical and Chemical Testing, Division of in Vitro Diagnostic Reagents, National Institutes for food and drug Control (NIFDC), Beijing, China
| | - Bo Liang
- Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Microbial Metabolism, Shanghai, China
- Basecare Medical Device Co., Ltd, Jiangsu, China
| | - Jia Fei
- Peking Jabrehoo Med Tech Co., Ltd, Beijing, China
| | | | - Jie Huang
- Division of Physical and Chemical Testing, Division of in Vitro Diagnostic Reagents, National Institutes for food and drug Control (NIFDC), Beijing, China.
| | - Shoufang Qu
- Division of Physical and Chemical Testing, Division of in Vitro Diagnostic Reagents, National Institutes for food and drug Control (NIFDC), Beijing, China.
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Chen D, Xu Y, Fu Y, Wang Y, Liu Y, Ding C, Cai B, Pan J, Wang J, Li R, Guo J, Zhang H, Zeng Y, Shen X, Zhou C. Clinical application of next generation sequencing-based haplotype linkage analysis in the preimplantation genetic testing for germline mosaicisms. Orphanet J Rare Dis 2023; 18:137. [PMID: 37270548 DOI: 10.1186/s13023-023-02736-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/18/2023] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND Preimplantation genetic testing (PGT) for monogenic disorders (PGT-M) for germline mosaicism was previously highly dependent on polymerase chain reaction (PCR)-based directed mutation detection combined with linkage analysis of short tandem repeats (STRs). However, the number of STRs is usually limited. In addition, designing suitable probes and optimizing the reaction conditions for multiplex PCR are time-consuming and laborious. Here, we evaluated the effectiveness of next generation sequencing (NGS)-based haplotype linkage analysis in PGT of germline mosaicism. METHODS PGT-M with NGS-based haplotype linkage analysis was performed for two families with maternal germline mosaicism for an X-linked Duchenne muscular dystrophy (DMD) mutation (del exon 45-50) or an autosomal TSC1 mutation (c.2074C > T). Trophectoderm biopsy and multiple displacement amplification (MDA) were performed for a total of nine blastocysts. NGS and Sanger sequencing were performed in genomic DNA of family members and embryonic MDA products to detect DMD deletion and TSC1 mutation, respectively. Single nucleotide polymorphism (SNP) sites closely linked to pathogenic mutations were detected with NGS and served in haplotype linkage analysis. NGS-based aneuploidy screening was performed for all embryos to reduce the risk of pregnancy loss. RESULTS All nine blastocytes showed conclusive PGT results. Each family underwent one or two frozen-thawed embryo transfer cycles to obtain a clinical pregnancy, and the prenatal diagnosis showed that the fetus was genotypically normal and euploid for both families. CONCLUSIONS NGS-SNP could effectively realize PGT for germline mosaicism. Compared with PCR-based methods, the NGS-SNP method with increased polymorphic informative markers can achieve a greater diagnostic accuracy. Further studies are warranted to verify the effectiveness of NGS-based PGT of germline mosaicism cases in the absence of surviving offsprings.
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Affiliation(s)
- Dongjia Chen
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Yan Xu
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Yu Fu
- The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, 570102, China
| | - Yali Wang
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Yuliang Liu
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Chenhui Ding
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Bing Cai
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Jiafu Pan
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Jing Wang
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Rong Li
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Jing Guo
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Han Zhang
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Yanhong Zeng
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China
| | - Xiaoting Shen
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China.
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China.
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Canquan Zhou
- The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China.
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, China.
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China.
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Ou Z, Deng Y, Liang Y, Chen Z, Sun L. Using affected embryos to establish linkage phase in preimplantation genetic testing for thalassemia. Reprod Biol Endocrinol 2022; 20:75. [PMID: 35490243 PMCID: PMC9055750 DOI: 10.1186/s12958-022-00948-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 04/25/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND This study aimed to evaluate the ability of next-generation sequencing (NGS) to conduct preimplantation genetic testing (PGT) for thalassemia using affected embryos. METHODS This study included data from 36 couples who underwent PGT for thalassemia without probands and relative pedigrees. NGS results were compared with prenatal diagnosis results. RESULTS Thirty-six couples (29 α-thalassemia and 7 β-thalassemia) underwent 41 PGT cycles (31 α-thalassemia and 10 β-thalassemia). Analysis using NGS produced conclusive results for all biopsied blastocysts (100%, 217/217). One hundred and sixty (73.7%, 160/217) were unaffected by thalassemia. Preimplantation genetic testing for aneuploidy revealed that 112 (70.0%, 112/160) were euploid. Single blastocysts were transferred into the uteri of 34 women (53 frozen embryo transfer [FET] cycles). Thirty-two cycles resulted in clinical pregnancies, with a clinical pregnancy rate of 60.1% (32/53) per FET cycle. Twenty-two cycles (22 couples) resulted in 23 live births, with a live birth rate of 43.4% (23/53; 3 cycles were ongoing pregnancies). All 25 embryos' prenatal diagnosis results and/or thalassemia gene analyses after delivery were concordant with the NGS-PGT results. Seven embryos (21.9%, 7/32) were miscarried before 12 weeks' gestation, and the abortion villus in four showed a normal karyotype and thalassemia results consistent with the NGS-PGT results. Aborted fetus samples from 3 cycles were not available because the pregnancy lasted less than 5 weeks. CONCLUSION NGS can be used to conduct PGT for thalassemia using affected embryos as a reference. TRIAL REGISTRATION Retrospectively registered.
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Affiliation(s)
- Zhanhui Ou
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, Guangdong, China
| | - Yu Deng
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, Guangdong, China
| | - Yunhao Liang
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, Guangdong, China
| | - Zhiheng Chen
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, Guangdong, China
| | - Ling Sun
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, Guangdong, China.
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Suhaimi SA, Zulkipli IN, Ghani H, Abdul-Hamid MRW. Applications of next generation sequencing in the screening and diagnosis of thalassemia: A mini-review. Front Pediatr 2022; 10:1015769. [PMID: 36245713 PMCID: PMC9557073 DOI: 10.3389/fped.2022.1015769] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 09/07/2022] [Indexed: 11/13/2022] Open
Abstract
Thalassemias are a group of inherited blood disorders that affects 5-7% of the world population. Comprehensive screening strategies are essential for the management and prevention of this disorder. Today, many clinical and research laboratories have widely utilized next-generation sequencing (NGS) technologies to identify diseases, from germline and somatic disorders to infectious diseases. Yet, NGS application in thalassemia is limited and has just recently surfaced due to current demands in seeking alternative DNA screening tools that are more efficient, versatile, and cost-effective. This review aims to understand the several aspects of NGS technology, including its most current and expanding uses, advantages, and limitations, along with the issues and solutions related to its integration into routine screening and diagnosis of thalassemias. Hitherto, NGS has been a groundbreaking technology that offers tremendous improvements as a diagnostic tool for thalassemia in terms of its higher throughput, accuracy, and adaptability. The superiority of NGS in detecting rare variants, solving complex hematological problems, and providing non-invasive alternatives to neonatal diagnosis cannot be overlooked. However, several pitfalls still preclude its use as a stand-alone technique over conventional methods.
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Affiliation(s)
| | | | - Hazim Ghani
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, Brunei
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Excluding embryos with two novel mutations in FREM2 gene by the next-generation sequencing-based single nucleotide polymorphism haplotyping. Aging (Albany NY) 2021; 13:24786-24794. [PMID: 34837691 PMCID: PMC8660615 DOI: 10.18632/aging.203715] [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: 08/10/2021] [Accepted: 10/27/2021] [Indexed: 11/25/2022]
Abstract
Fraser syndrome is a rare autosomal recessive malformation disorder. It is characterized by cryptophthalmos, syndactyly, urinary tract abnormalities and ambiguous genitalia. This condition is due to homozygous or heterozygous mutations in the FRAS1, FREM1, FREM2, and GRIP1 genes. In the present study, we recruited a Chinese family with Fraser syndrome. Two novel mutations c.7542_7543insG and c.2689C>T in the FREM2 gene were detected in this Fraser syndrome family by PCR-based sequencing. The next-generation sequencing-based single nucleotide polymorphism haplotyping method was applied to exclude these two mutations in 9 blastocysts obtained from the patient. After obtaining consent and informing the risk, the patient received in vitro fertilization and embryo transfer treatment with an embryo carrying a heterozygous mutation. Finally, she delivered a healthy baby without any complications on March 17, 2019. In conclusion, we first reported two novel mutations in the FREM2 gene associated with the risk of Fraser syndrome. Moreover, we described a next-generation sequencing-based single nucleotide polymorphism haplotyping method to select the ‘right’ embryos from patients with Fraser syndrome for in vitro fertilization and embryo transfer treatment.
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Huang C, Zheng B, Chen L, Diao Z, Zhou J. The clinical application of single-sperm-based single-nucleotide polymorphism haplotyping for PGT of patients with genetic diseases. Reprod Biomed Online 2021; 44:63-71. [PMID: 34862136 DOI: 10.1016/j.rbmo.2021.09.008] [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: 05/20/2021] [Revised: 08/10/2021] [Accepted: 09/10/2021] [Indexed: 11/29/2022]
Abstract
RESEARCH QUESTION Is there a simple and effective method for male patients with genetic disorders in families with no identified haplotype and with Robertsonian translocations to avoid the transfer of embryos carrying translocated chromosomes? DESIGN Single spermatozoa were separated to identify by next-generation sequencing (NGS) those that were genetically abnormal, to establish a sperm-based single-nucleotide polymorphism (SNP) haplotype. Blastocysts that developed to day 5 or 6 were then biopsied for whole genome amplification and screening for chromosomal aneuploidy. Normal embryos were selected by comparison with a single-sperm-based SNP haplotype and were transferred. The results were verified by second trimester amniocentesis. RESULTS Two blastocysts obtained from patients with neurofibroma type 1 (NF1) were found to be normal after NGS according to single-sperm-based SNP haplotype analysis (13 SNP sites). Three and one blastocysts, respectively, were obtained from the patients with Robertsonian translocation. Blastocysts B9 and B7 were found to be normal after NGS according to the single-sperm-based SNP haplotype analysis (12 and 13 SNP sites selected on chromosomes 14 and 22 for the first patient; 12 and 9 SNP sites selected on chromosomes 13 and 14 for the second patient). Successful pregnancies after blastocyst transfer occurred in all three patients. The identification of embryos was verified by mid-trimester amniocentesis. All three patient couples successfully delivered healthy babies. CONCLUSION This study preliminarily summarized the process of single-sperm-based SNP haplotyping, which could be applied as preimplantation genetic testing for male patients without identified disease-causing haplotypes and with Robertsonian translocations.
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Affiliation(s)
- Chenyang Huang
- Reproductive Medicine Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China; Center for Molecular Reproductive Medicine, Nanjing University, Nanjing 210008, China
| | - Bo Zheng
- Reproductive Medicine Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China; Center for Molecular Reproductive Medicine, Nanjing University, Nanjing 210008, China
| | - Linjun Chen
- Reproductive Medicine Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China; Center for Molecular Reproductive Medicine, Nanjing University, Nanjing 210008, China
| | - Zhenyu Diao
- Reproductive Medicine Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China; Center for Molecular Reproductive Medicine, Nanjing University, Nanjing 210008, China
| | - Jianjun Zhou
- Reproductive Medicine Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China; Center for Molecular Reproductive Medicine, Nanjing University, Nanjing 210008, China.
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The effects of the day of trophectoderm biopsy and blastocyst grade on the clinical and neonatal outcomes of preimplantation genetic testing-frozen embryo transfer cycles. ZYGOTE 2021; 30:132-137. [PMID: 34184632 DOI: 10.1017/s0967199421000435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This study analyzed the effects of the day of trophectoderm (TE) biopsy and blastocyst grade on clinical and neonatal outcomes. The results showed that the implantation and live birth rates of day 5 (D5) TE biopsy were significantly higher compared with those of D6 TE biopsy. The miscarriage rate of the former was lower than that of the latter, but there was no statistically significant difference. Higher quality blastocysts can achieve better implantation and live birth rates. Among good quality blastocysts, the implantation and live birth rates of D5 and D6 TE biopsy were not significantly different. Among fair quality and poor quality blastocysts, the implantation and live birth rates of D5 TE biopsy were significantly higher compared with those of D6 TE biopsy. Neither blastocyst grade nor the day of TE biopsy significantly affected the miscarriage rate. Neonatal outcomes, including newborn sex, gestational age, preterm birth, birth weight and low birth weight in the D5 and D6 TE biopsies were not significantly different. Both blastocyst grade and the day of TE biopsy must be considered at the same time when performing preimplantation genetic testing-frozen embryo transfer.
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Deng Y, Ou Z, Li R, Chen Z, Liang P, Sun L. Affected-embryo-based SNP haplotyping with NGS for the preimplantation genetic testing of Marfan syndrome. Syst Biol Reprod Med 2021; 67:298-306. [PMID: 34053377 DOI: 10.1080/19396368.2021.1926574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Marfan syndrome (MFS), an autosomal dominant heritable disease of the connective tissue, is characterized by broad clinical manifestations in the musculoskeletal, cardiovascular, pulmonary, and ocular systems. In this study, a male patient with MFS caused by a heterozygous mutation NM_000138.5(FBN1):c.6037 + 2 T > C in the fibrillin 1 gene (FBN1) underwent preimplantation genetic testing (PGT) by using affected-embryo-based single nucleotide polymorphism (SNP) haplotyping. Multiple displacement amplification was used for whole genome amplification of biopsied trophectoderm cells after controlled ovarian stimulation. Sanger sequencing and next-generation sequencing (NGS) were used to detect the state of FBN1 mutation. A total of 14 blastocysts formed after intracytoplasmic sperm injection were biopsied. After NGS, 60 informative polymorphic SNP markers located upstream and downstream of the FBN1 gene and its pathogenic mutation site were linked to individual alleles. Sanger sequencing further confirmed that 8 blastocysts carried the mutation NM_000138.5(FBN1):c.6037 + 2 T > C, while 6 did not. Four of the non-carriers were euploid verified by copy number variation results. A female infant without MFS was born at 37 weeks gestation after a subsequent frozen embryo transfer. In conclusion, the successful case indicates that SNP haplotyping using sibling embryos as a reference is applicable to PGT in monogenetic diseases.Abbreviations MFS: Marfan syndrome; PGT: preimplantation genetic testing; FBN1: fibrillin 1 gene; NGS: next-generation sequencing; SNP: single nucleotide polymorphism.
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Affiliation(s)
- Yu Deng
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zhanhui Ou
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Ru Li
- Center of Prenatal Diagnosis, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zhiheng Chen
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Peiling Liang
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Ling Sun
- Center of Reproductive Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
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Next-Generation Sequencing-Based Preimplantation Genetic Testing for De Novo NF1 Mutations. BIOCHIP JOURNAL 2021. [DOI: 10.1007/s13206-021-00006-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Chen D, Shen X, Xu Y, Ding C, Ye Q, Zhong Y, Xu Y, Zhou C. Successful four-factor preimplantation genetic testing: α- and β-thalassemia, human leukocyte antigen typing, and aneuploidy screening. Syst Biol Reprod Med 2021; 67:151-159. [PMID: 33494632 DOI: 10.1080/19396368.2020.1832158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Our study established an effective next-generation sequencing (NGS) protocol for four-factor preimplantation genetic testing (PGT) using α- and β-thalassemia, human leukocyte antigen (HLA) typing, and aneuploidy screening. Three couples, in whom both partners were α- and β-double thalassemia carriers, underwent PGT between 2016 and 2018. These individuals sought an opportunity for hematopoietic stem cell transplantation to save their children from β-thalassemia major. A total of 35 biopsied trophectoderm samples underwent multiple displacement amplification (MDA). PGT for α- and β-thalassemia and HLA typing were performed on MDA products using NGS-based single-nucleotide polymorphism (SNP) haplotyping. Although two samples failed MDA, 94.3% (33/35) of samples were successfully amplified, achieving conclusive PGT results. Furthermore, 51.5% (17/33) of the embryos were diagnosed as unaffected non-carriers or carriers. Of the 17 unaffected embryos, nine (52.9%) were tested further and identified as euploid via NGS-based aneuploid screening, in which five had HLA types matching affected children. One family did not achieve any unaffected euploid embryos. The two other families transferred HLA-matched and unaffected euploid embryos, resulting in two healthy 'savior babies.' NGS-PGT results were confirmed in prenatal diagnosis. Therefore, NGS-SNP was effective in performing PGT for multipurpose detection within a single PGT cycle.
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Affiliation(s)
- Dongjia Chen
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, China
| | - Xiaoting Shen
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, China
| | - Yan Xu
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, China
| | - Chenhui Ding
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, China
| | - Qingjian Ye
- Department of Gynecology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yiping Zhong
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, China
| | - Yanwen Xu
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, China
| | - Canquan Zhou
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, China
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12
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Long N, Qiao Y, Xu Z, Tu J, Lu Z. Recent advances and application in whole-genome multiple displacement amplification. QUANTITATIVE BIOLOGY 2020. [DOI: 10.1007/s40484-020-0217-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Huang S, Niu Y, Li J, Gao M, Zhang Y, Yan J, Ma S, Gao X, Gao Y. Complex preimplantation genetic tests for Robertsonian translocation, HLA, and X-linked hyper IgM syndrome caused by a novel mutation of CD40LG gene. J Assist Reprod Genet 2020; 37:2025-2031. [PMID: 32500460 DOI: 10.1007/s10815-020-01846-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/28/2020] [Indexed: 12/22/2022] Open
Abstract
PURPOSE To perform complex preimplantation genetic tests (PGT) for aneuploidy screening, Robertsonian translocation, HLA-matching, and X-linked hyper IgM syndrome (XHIGM) caused by a novel mutation c.156 G>T of CD40LG gene. METHODS Reverse transcription PCR (RT-PCR) and Sanger sequencing were carried out to confirm the causative variant of CD40LG gene in the proband and parents. Day 5 and D6 blastocysts, obtained by in vitro fertilization (IVF) with intracytoplasmic sperm injection, underwent trophectoderm (TE) biopsy and whole genomic amplification (WGA) and next generation sequencing (NGS)-based PGT to detect the presence of a maternal CD40LG mutation, aneuploidy, Robertsonian translocation carrier, and human leukocyte antigen (HLA) haplotype. RESULTS Sanger sequencing data of the genomic DNA showed that the proband has a hemizygous variant of c. 156 G>T in the CD40LG gene, while his mother has a heterozygous variant at the same position. Complementary DNA (cDNA) of CD40LG amplification and sequencing displayed that no cDNA of CD40LG was found in proband, while only wild-type cDNA of CD40LG was amplified in the mother. PGT results showed that only one of the six tested embryos is free of the variant c.156 G>T and aneuploidy and having the consistent HLA type as the proband. Meanwhile, the embryo is a Robertsonian translocation carrier. The embryo was transplanted into the mother's uterus. Amniotic fluid testing results are consistent with that of PGT. A healthy baby girl was delivered, and the peripheral blood testing data was also consistent with the testing results of transplanted embryo. CONCLUSIONS The novel mutation of c. 156 G>T in CD40LG gene probably leads to XHIGM by nonsense-meditated mRNA decay (NMD), and complex PGT of preimplantation genetic testing for monogenic disease (PGT-M), aneuploidy (PGT-A), structural rearrangement (PGT-SR), and HLA-matching (PGT-HLA) can be performed in pedigree with both X-linked hyper IgM syndrome and Robertsonian translocation.
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Affiliation(s)
- Sexin Huang
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China
| | - Yuping Niu
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China
| | - Jie Li
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China
| | - Ming Gao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China
| | - Yan Zhang
- Shandong Provincial Hospital, Jinan, 250001, Shandong, China
| | - Junhao Yan
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China
| | - Shuiying Ma
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China
| | - Xuan Gao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China
| | - Yuan Gao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China.
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012, Shandong, China.
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012, Shandong, China.
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012, Shandong, China.
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, 250012, Shandong, China.
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14
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Chen D, Shen X, Wu C, Xu Y, Ding C, Zhang G, Xu Y, Zhou C. Eleven healthy live births: a result of simultaneous preimplantation genetic testing of α- and β-double thalassemia and aneuploidy screening. J Assist Reprod Genet 2020; 37:549-557. [PMID: 32152910 DOI: 10.1007/s10815-020-01732-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 02/28/2020] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To evaluate the efficacy of preimplantation genetic testing (PGT) for α- and β-double thalassemia combined with aneuploidy screening using next-generation sequencing (NGS). METHODS An NGS-based PGT protocol was performed between 2017 and 2018 for twelve couples, each of which carried both α- and β-thalassemia mutations. Trophectoderm biopsy samples underwent whole-genome amplification using multiple displacement amplification (MDA), followed by NGS for thalassemia detection and aneuploidy screening. A selection of several informative single nucleotide polymorphisms (SNPs) established haplotypes. Aneuploidy screening was performed only on unaffected noncarriers and carriers. Unaffected and euploid embryos were transferred into the uterus through frozen-thawed embryo transfer (FET). RESULTS A total of 280 oocytes were retrieved following 18 ovum pick-up (OPU) cycles, with 182 normally fertilized and 112 cultured to become blastocysts. One hundred and seven (95.5%, 107/112) blastocysts received conclusive PGT results, showing 56 (52.3%, 56/107) were unaffected. Thirty-seven (66.1%, 37/56) of the unaffected were also identified as euploid. One family had no transferable embryos. Unaffected and euploid embryos were then transferred into the uterus of the other 11 couples resulting in 11 healthy live births. The clinical pregnancy rate was 61.1% (11/18) per OPU and 68.8% (11/16) per FET, with no miscarriage reported. Seven families accepted the prenatal diagnosis and received consistent results with the NGS-based PGT. CONCLUSION This study indicated that NGS could realize the simultaneous PGT of double thalassemia and aneuploidy screening in a reliable and accurate manner. Moreover, it eliminated the need for multiple biopsies, alleviating the potential damages to the pre-implanted blastocysts.
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Affiliation(s)
- Dongjia Chen
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, Guangdong, China
| | - Xiaoting Shen
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, Guangdong, China
| | - Changsheng Wu
- Peking Medriv Academy of Genetics and Reproduction, Peking, 102629, China
| | - Yan Xu
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, Guangdong, China
| | - Chenhui Ding
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China.,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, Guangdong, China
| | - Guirong Zhang
- Peking Medriv Academy of Genetics and Reproduction, Peking, 102629, China.
| | - Yanwen Xu
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China. .,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, Guangdong, China.
| | - Canquan Zhou
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China. .,Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, 510080, Guangdong, China.
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15
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Development and validation of a novel panel of 16 STR markers for simultaneous diagnosis of β-thalassemia, aneuploidy screening, maternal cell contamination detection and fetal sample authenticity in PND and PGD/PGS cases. Sci Rep 2019; 9:7452. [PMID: 31092881 PMCID: PMC6520367 DOI: 10.1038/s41598-019-43892-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 05/03/2019] [Indexed: 11/09/2022] Open
Abstract
Prenatal diagnosis (PND) may be complicated with sample mix-up; maternal cell contamination, non-paternity and allele drop out at different stages of diagnosis. Aneuploidy screening if combined with PND for a given single gene disorder, can help to detect any common aneuploidy as well as aiding sample authenticity and other probable complications which may arise during such procedures. This study was carried out to evaluate the effectiveness of a novel panel of STR markers combined as a multiplex PCR kit (HapScreen™ kit) for the detection of β-thalassemia, aneuploidy screening, ruling in/out maternal cell contamination (MCC), and sample authenticity. The kit uses 7 STR markers linked to β-globin gene (HBB) as well as using 9 markers for quantitative analysis of chromosomes 21, 18, 13, X and Y. Selection of the markers was to do linkage analysis with β-globin gene, segregation analysis and to perform a preliminary aneuploidy screening of fetal samples respectively. These markers (linked to the β-globin gene) were tested on more than 2185 samples and showed high heterozygosity values (68.4-91.4%). From 2185 fetal cases we found 3 cases of non-paternity, 5 cases of MCC, one case of sample mix-up and one case of trisomy 21 which otherwise may have end up to misdiagnosis. This kit was also successfully used on 231 blastomeres for 29 cases of pre-implantation genetic diagnosis (PGD) and screening (PGS). The markers used for simultaneous analysis of haplotype segregation and aneuploidy screening proved to be very valuable to confirm results obtained from direct mutation detection methods (i.e. ARMS, MLPA and sequencing) and aneuploidy screening.
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16
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Preimplantation Genetic Testing of Achondroplasia by Two Haplotyping Systems: Short Tandem Repeats and Single Nucleotide Polymorphism. BIOCHIP JOURNAL 2019. [DOI: 10.1007/s13206-018-3207-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Xu H, Liu Y, Yan P, He Y, Qin J, Lou J, Zhou W. [Rapid preimplantation genetic diagnosis of α-thalassemia SEA deletion with blastocyst cell whole genome amplification and short fragment Gap-PCR method]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:1250-1254. [PMID: 30377127 DOI: 10.3969/j.issn.1673-4254.2018.10.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To develop a rapid preimplantation genetic diagnosis method for α-thalassemia SEA deletion based on blastocyst cell whole genome amplification (WGA) combined with short fragment Gap-PCR. METHODS Using multiple displacement amplification (MDA) WGA technique, we established a double-fluorescent PCR system of the housekeeping genes GAPDH and β-actin for WGA quality testing, and a genotyping PCR system of mutant and normal short sequences for α-thalassemia SEA deletion. The sensitivity and accuracy of this method for diagnosis of α-thalassemia SEA deletion were evaluated by detecting lymphocyte samples containing different cell numbers from carriers of SEA deletion. The applicability of this method was evaluated by testing of 12 blastocyst biopsy samples. RESULTS Detection of lymphocyte samples with different cell numbers using the method developed in this study revealed no ADO in 3-cell samples, and the product quantity of WGA became stable for 4-cell samples. Genotyping of the 10 blastocyst biopsy samples with successful WGA showed a genotype of --SEA/αα in 5 samples and αα/αα in the other 5 samples, which were consistent with the verification results. CONCLUSIONS The method developed in this study is a complete testing process for 4-6 blastocyst biopsy cells to allow rapid, accurate, and cost-effective PGD genotyping of α-thalassemia SEA deletion using short fragment gap-PCR.
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Affiliation(s)
- Huiling Xu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yanhui Liu
- Dongguan Maternal and Children's Healthcare Hospital, Dongguan 523122, China
| | - Ping Yan
- Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yi He
- Dongguan Maternal and Children's Healthcare Hospital, Dongguan 523122, China
| | - Jiachun Qin
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jiwu Lou
- Dongguan Maternal and Children's Healthcare Hospital, Dongguan 523122, China
| | - Wanjun Zhou
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
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18
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Aliyeva G, Asadov C, Mammadova T, Gafarova S, Abdulalimov E. Thalassemia in the laboratory: pearls, pitfalls, and promises. ACTA ACUST UNITED AC 2018; 57:165-174. [DOI: 10.1515/cclm-2018-0647] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 07/16/2018] [Indexed: 12/18/2022]
Abstract
Abstract
Thalassemia is one of the most common hereditary disorders of the developing world, and it is associated with severe anemia and transfusion dependence. The global health burden of thalassemia has increased as a result of human mobility and migration in recent years. Depending on inherited mutations, thalassemia patients exhibit distorted hemoglobin (Hb) patterns and deviated red cell indices, both of which can be used to support identification by diagnostic tools. Diagnostic approaches vary depending on the target population and the aim of the testing. Current methods, which are based on Hb patterns, are used for first-line screening, whereas molecular testing is needed for conformation of the results and for prenatal and preimplantation genetic diagnosis. In the present paper, we review the diagnostic parameters, pitfalls, interfering factors, and methods; currently available best-practice guidelines; quality assurance and standardization of the procedures; and promising laboratory technologies for the future of thalassemia diagnosis.
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Affiliation(s)
- Gunay Aliyeva
- Department of Hemopoietic Pathologies , Institute of Hematology and Blood Transfusion , Baku , Azerbaijan
| | - Chingiz Asadov
- Department of Hemopoietic Pathologies , Institute of Hematology and Blood Transfusion , Baku , Azerbaijan
| | - Tahira Mammadova
- Department of Hemopoietic Pathologies , Institute of Hematology and Blood Transfusion , Baku , Azerbaijan
| | - Surmaya Gafarova
- Department of Hemopoietic Pathologies , Institute of Hematology and Blood Transfusion , Baku , Azerbaijan
| | - Eldar Abdulalimov
- Department of Hemopoietic Pathologies , Institute of Hematology and Blood Transfusion , Baku , Azerbaijan
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19
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Chen L, Diao Z, Xu Z, Zhou J, Yan G, Sun H. The clinical application of single-sperm-based SNP haplotyping for PGD of osteogenesis imperfecta. Syst Biol Reprod Med 2018; 65:75-80. [PMID: 29764212 DOI: 10.1080/19396368.2018.1472315] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Linjun Chen
- Reproductive Medical Center, Drum Tower Hospital Affiliated with Nanjing University Medical College, Nanjing, People’s Republic of China
| | - Zhenyu Diao
- Reproductive Medical Center, Drum Tower Hospital Affiliated with Nanjing University Medical College, Nanjing, People’s Republic of China
| | - Zhipeng Xu
- Reproductive Medical Center, Drum Tower Hospital Affiliated with Nanjing University Medical College, Nanjing, People’s Republic of China
| | - Jianjun Zhou
- Reproductive Medical Center, Drum Tower Hospital Affiliated with Nanjing University Medical College, Nanjing, People’s Republic of China
| | - Guijun Yan
- Reproductive Medical Center, Drum Tower Hospital Affiliated with Nanjing University Medical College, Nanjing, People’s Republic of China
| | - Haixiang Sun
- Reproductive Medical Center, Drum Tower Hospital Affiliated with Nanjing University Medical College, Nanjing, People’s Republic of China
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