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Davalieva K, Terzikj M, Bozhinovski G, Kiprijanovska S, Kubelka-Sabit K, Plaseska-Karanfilska D. Comparative proteomics analysis of decidua reveals altered RNA processing and impaired ribosome function in recurrent pregnancy loss. Placenta 2024; 154:28-37. [PMID: 38870839 DOI: 10.1016/j.placenta.2024.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 05/20/2024] [Accepted: 06/06/2024] [Indexed: 06/15/2024]
Abstract
INTRODUCTION Factors contributing to recurrent pregnancy loss (RPL) in more than half of the cases are still unknown. The incidence and societal impact of this condition requires urgent elucidation of the mechanisms behind it, which could aid in significant improvement of clinical management. MATERIALS AND METHODS Using a highly efficient in-solution digestion method and label-free data-independent LC-MS/MS acquisition with ion mobility, we performed comparative proteomics analysis of the decidua tissues from 19 RPL patients and 10 controls. Differentially abundant proteins (DAPs) were compared and correlated with 3 publicly available transcriptomic datasets and the expression of selected biomarkers was tested by qPCR in decidua and chorionic villi from an extended cohort. RESULTS From 1952 proteins identified based on ≥2 peptides, the statistically significant difference in abundance (Anova p ≤ 0.05) and fold change ≥1.2 showed 85 proteins. Pathway analysis using Reactome, KEGG and Wiki pathways identified enrichment of "Signaling by ROBO receptors", "RNA degradation" and "Cytoplasmic Ribosomal Proteins". The correlation between protein and gene expression in decidua revealed that the down-regulated ribosomal proteins in our dataset (RPS15, RPS17, RPL27A, RPL35A and RPL18) showed the same regulation trend at the mRNA level, which was later confirmed for transcripts of RPS15 and RPL18 in our cohort. DISCUSSION Our data suggests that the potential causes of RPL from the maternal side could be associated with impaired RNA processing machinery. Furthermore, the list of DAPs in RPL opens future investigations in terms of screening novel gene variants predisposing to pregnancy failure and developing biomarkers for RPL risk.
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Affiliation(s)
- Katarina Davalieva
- Research Centre for Genetic Engineering and Biotechnology "Georgi D Efremov", Macedonian Academy of Sciences and Arts, 1000, Skopje, North Macedonia.
| | - Marija Terzikj
- Research Centre for Genetic Engineering and Biotechnology "Georgi D Efremov", Macedonian Academy of Sciences and Arts, 1000, Skopje, North Macedonia
| | - Gjorgji Bozhinovski
- Research Centre for Genetic Engineering and Biotechnology "Georgi D Efremov", Macedonian Academy of Sciences and Arts, 1000, Skopje, North Macedonia
| | - Sanja Kiprijanovska
- Research Centre for Genetic Engineering and Biotechnology "Georgi D Efremov", Macedonian Academy of Sciences and Arts, 1000, Skopje, North Macedonia
| | - Katerina Kubelka-Sabit
- Laboratory for Histopathology, Clinical Hospital "Acibadem Sistina", 1000, Skopje, North Macedonia
| | - Dijana Plaseska-Karanfilska
- Research Centre for Genetic Engineering and Biotechnology "Georgi D Efremov", Macedonian Academy of Sciences and Arts, 1000, Skopje, North Macedonia
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Upadhyay M, Singh NK, Ashish A, Upadhyay M, Singh A, Singh R. The Rapid Evaluation of Down Syndrome With Quantitative Fluorescence Polymerase Chain Reaction (QF-PCR): A Pilot Study Among the Population in Eastern Uttar Pradesh, India. Cureus 2024; 16:e59241. [PMID: 38813278 PMCID: PMC11134114 DOI: 10.7759/cureus.59241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2024] [Indexed: 05/31/2024] Open
Abstract
Background and objective Down syndrome (DS) is characterized by the presence of an additional chromosome; it is a typical chromosomal disorder causing intellectual disability in individuals. The diagnostic process for DS often involves conventional karyotyping, which can be time-consuming. Trisomy 21 and other chromosomal abnormalities may now be quickly and accurately diagnosed using quantitative fluorescence polymerase chain reaction (QF-PCR). In light of this, this study aimed to investigate chromosomal abnormalities in DS using conventional karyotyping and QF-PCR among the population in eastern Uttar Pradesh, India. Methods Blood samples from 40 individuals with clinically diagnosed DS were collected. Conventional karyotyping involved standard cytogenetic techniques, while QF-PCR utilized DNA extraction and analysis with chromosome-specific short tandem repeat (STR) markers. Results Various distinct physical characteristics were observed in the DS individuals, such as mongoloid slant and low-set ears. Karyotyping and QF-PCR analyses revealed different chromosomal configurations associated with DS trisomy 21, with additional chromosomal abnormalities found in some individuals, including partial monosomy 18 and mosaic trisomy 21. However, in a few cases, neither karyotyping nor QF-PCR revealed any abnormalities. Conclusions The study demonstrated that QF-PCR is a reliable and rapid method for diagnosing DS, providing results within 24 hours. This approach allows for the simultaneous diagnosis of a large number of samples and reduces the time required to obtain results. In the diagnostic procedure for DS, we believe QF-PCR will prove to be a useful tool. Furthermore, therapeutic interventions based on their clinical traits and molecular karyotyping can enhance the quality of life of people with DS.
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Affiliation(s)
- Maneesha Upadhyay
- Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Nitish K Singh
- Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Ashish Ashish
- Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Meenakshi Upadhyay
- Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Ankur Singh
- Pediatric Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Royana Singh
- Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
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Bozhinovski G, Terzikj M, Kubelka-Sabit K, Plaseska-Karanfilska D. High Incidence of CPLANE1-Related Joubert Syndrome in the Products of Conceptions from Early Pregnancy Losses. Balkan Med J 2024; 41:97-104. [PMID: 38351681 PMCID: PMC10913109 DOI: 10.4274/balkanmedj.galenos.2024.2023-10-72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/19/2024] [Indexed: 03/02/2024] Open
Abstract
Background The fetal monogenic causes of early pregnancy losses (EPLs) are mainly unknown, with only a few articles on the subject published. In our previous study of EPLs using whole-exome sequencing analysis, we confirmed a genetic diagnosis of CPLANE1-related Joubert syndrome (JS) in three EPLs from two couples and identified a relatively common CPLANE1 allele among our population (NM_001384732.1:c.1819delT;c.7817T>A, further after referred as “complex allele”). Pathogenic variants in the CPLANE1 (C5orf42) gene are reported to cause JS type 17, a primary ciliopathy with various system defects. Aims To examine the hypothesis that the CPLANE1 “complex allele,” whether homozygous or compound heterozygous, is a common cause of EPLs in our population. Study Design Cohort study/case-control study.ontrol study. Methods In this study, we used polymerase chain reaction-based methods to screen for CPLANE1 “complex allele” presence among 246 euploid EPLs (< 12 gestational weeks) from families in North Macedonia. We also investigated the impact of this allele in 650 women with EPLs versus 646 women with no history of pregnancy loss and at least one livebirth, matched by ethnic origin. Results We found a high incidence of JS in the total study group of EPLs (2.03%), with a considerably higher incidence among Albanian families (6.25%). Although not statistically significant, women with EPLs had a higher allele frequency of the CPLANE1 “complex allele” (AF = 1.38%) than the controls (AF = 0.85%; p = 0.2). Albanian women had significantly higher frequency of the “complex allele” than the Macedonians (AF = 1.65% and 0.39%, respectively; p = 0.003). Conclusion To the best of our knowledge, this is the highest reported incidence of fetal monogenic disease that might cause EPLs. Targeted screening for the CPLANE1 “complex allele” would be warranted in Albanian ethnic couples because it would detect one JS in every 16 euploid EPLs. Our findings have a larger impact on the pathogenesis of pregnancy loss and contribute to a better understanding of the pathogenicity of the variants in the CPLANE1 gene.
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Affiliation(s)
- Gjorgji Bozhinovski
- Research Center for Genetic Engineering and Biotechnology “Georgi D. Efremov”, Macedonian Academy of Sciences and Arts, Skopje, North Macedonia
| | - Marija Terzikj
- Research Center for Genetic Engineering and Biotechnology “Georgi D. Efremov”, Macedonian Academy of Sciences and Arts, Skopje, North Macedonia
| | - Katerina Kubelka-Sabit
- Department of Laboratory for Histopathology and Cytology, Clinical Hospital Acıbadem Sistina, Skopje, North Macedonia
- Faculty of Medical Sciences, Goce Delchev University, Stip, North Macedonia
| | - Dijana Plaseska-Karanfilska
- Research Center for Genetic Engineering and Biotechnology “Georgi D. Efremov”, Macedonian Academy of Sciences and Arts, Skopje, North Macedonia
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Huang C, Luo H, Zeng B, Feng C, Chen J, Yuan H, Huang S, Yang B, Zou Y, Liu Y. Identification of two novel and one rare mutation in DYRK1A and prenatal diagnoses in three Chinese families with intellectual Disability-7. Front Genet 2023; 14:1290949. [PMID: 38179410 PMCID: PMC10765505 DOI: 10.3389/fgene.2023.1290949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 12/07/2023] [Indexed: 01/06/2024] Open
Abstract
Background and purpose: Intellectual disability-7 (MRD7) is a subtype disorder of intellectual disability (MRD) involving feeding difficulties, hypoactivity, and febrile seizures at an age of early onset, then progressive intellectual and physical development deterioration. We purposed to identify the underlying causative genetic factors of three individuals in each Chinese family who presented with symptoms of intellectual disability and facial dysmorphic features. We provided prenatal diagnosis for the three families and genetic counseling for the prevention of this disease. Methods: We collected retrospective clinical diagnostic evidence for the three probands in our study, which included magnetic resonance imaging (MRI), computerized tomography (CT), electroencephalogram (EEG), and intelligence tests for the three probands in our study. Genetic investigation of the probands and their next of kin was performed by Trio-whole exome sequencing (WES). Sanger sequencing or quantitative PCR technologies were then used as the next step to verify the variants confirmed with Trio-WES for the three families. Moreover, we performed amniocentesis to explore the state of the three pathogenic variants in the fetuses by prenatal molecular genetic diagnosis at an appropriate gestational period for the three families. Results: The three probands and one fetus were clinically diagnosed with microcephaly and exhibited intellectual developmental disability, postnatal feeding difficulties, and facial dysmorphic features. Combining probands' clinical manifestations, Trio-WES uncovered the three heterozygous variants in DYRK1A: a novel variant exon3_exon4del p.(Gly4_Asn109del), a novel variant c.1159C>T p.(Gln387*), and a previously presented but rare pathogenic variant c.1309C>T p.(Arg437*) (NM_001396.5) in three families, respectively. In light of the updated American College of Medical Genetic and Genomics (ACMG) criterion, the variant of exon3_exon4del and c.1159C>T were both classified as likely pathogenic (PSV1+PM6), while c1309C>T was identified as pathogenic (PVS1+PS2_Moderate+PM2). Considering clinical features and molecular testimony, the three probands were confirmed diagnosed with MRD7. These three discovered variants were considered as the three causal mutations for MRD7. Prenatal diagnosis detected the heterozygous dominant variant of c.1159C>T p.(Gln387*) in one of the fetuses, indicating a significant probability of MRD7, subsequently the gestation was intervened by the parents' determination and professional obstetrical operation. On the other side, prenatal molecular genetic testing revealed wild-type alleles in the other two fetuses, and their parents both decided to sustain the gestation. Conclusion: We identified two novel and one rare mutation in DYRK1A which has broadened the spectrum of DYRK1A and provided evidence for the diagnosis of MRD7 at the molecular level. Besides, this study has supported the three families with MRD7 to determine the causative genetic factors efficiently and provide concise genetic counseling for the three families by using Trio-WES technology.
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Affiliation(s)
| | | | | | | | | | | | | | - Bicheng Yang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi, China
| | - Yongyi Zou
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi, China
| | - Yanqiu Liu
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi, China
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Noveski P, Plaseski T, Dimitrovska M, Plaseska-Karanfilska D. Androgen Insensitivity Syndrome DUE to Non-Coding Variation in the Androgen Receptor Gene: Review of the Literature and Case Report of a Patient with Mosaic c.-547C>T Variant. Balkan J Med Genet 2023; 26:51-56. [PMID: 37576790 PMCID: PMC10413879 DOI: 10.2478/bjmg-2023-0012] [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] [Indexed: 08/15/2023] Open
Abstract
Sexual development (SD) is a complex process with strict spatiotemporal regulation of gene expression. Despite advancements in molecular diagnostics, disorders of sexual development (DSD) have a diagnostic rate of ~50%. Androgen insensitivity syndrome (AIS) represents the most common form of 46,XY DSD, with a spectrum of defects in androgen action. Considering the importance of very strict regulation of the SD, it is reasonable to assume that the genetic cause for proportion of the DSD lies in the non-coding part of the genome that regulates proper gene functioning. Here we present a patient with partial AIS (PAIS) due to a mosaic de novo c.-547C>T pathogenic variant in the 5'UTR of androgen receptor (AR) gene. The same mutation was previously described as inherited, in two unrelated patients with complete AIS (CAIS). Thus, our case further confirms the previous findings that variable gene expressivity could be attributed to mosaicism. Mutations in 5'UTR could create new upstream open reading frames (uORFs) or could disrupt the existing one. A recent systematic genome-wide study identified AR as a member of a subset of genes where modifications of uORFs represents an important disease mechanism. Only a small number of studies are reporting non-coding mutations in the AR gene and our case emphasizes the importance of molecular testing of the entire AR locus in AIS patients. The introduction of new methods for comprehensive molecular testing in routine genetic diagnosis, accompanied with new tools for in sillico analysis could improve the genetic diagnosis of AIS, and DSD in general.
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Affiliation(s)
- P Noveski
- Research Centre for Genetic Engineering and Biotechnology ‘Georgi D. Efremov’, Macedonian Academy of Sciences and Arts, 1000Skopje, Republic of North Macedonia
| | - T Plaseski
- University Clinic of Endocrinology, Diabetes and Metabolic Disorders, Clinical Centre “Mother Teresa“, 1000Skopje, Republic of North Macedonia
| | - M Dimitrovska
- University Clinic of Endocrinology, Diabetes and Metabolic Disorders, Clinical Centre “Mother Teresa“, 1000Skopje, Republic of North Macedonia
| | - D Plaseska-Karanfilska
- Research Centre for Genetic Engineering and Biotechnology ‘Georgi D. Efremov’, Macedonian Academy of Sciences and Arts, 1000Skopje, Republic of North Macedonia
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Zou Y, Luo H, Yuan H, Xie K, Yang Y, Huang S, Yang B, Liu Y. Identification of a Novel Nonsense Mutation in PLA2G6 and Prenatal Diagnosis in a Chinese Family With Infantile Neuroaxonal Dystrophy. Front Neurol 2022; 13:904027. [PMID: 35873758 PMCID: PMC9298276 DOI: 10.3389/fneur.2022.904027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/09/2022] [Indexed: 11/30/2022] Open
Abstract
Background and Purpose Infantile neuroaxonal dystrophy (INAD) is a subtype of PLA2G6-Associated Neurodegeneration (PLAN) with an age of early onset and severe clinical phenotypes of neurodegeneration. Individuals affected with INAD are characterized by rapid progressive psychomotor deterioration, neuroregression, and hypotonia followed by generalized spasticity, optic atrophy, and dementia. In this case, we aimed to identify the underlying causative genetic factors of a Chinese family with two siblings who presented with walking difficulty and inability to speak. We provided a prenatal diagnosis for the family and information for the prevention of this genetic disease. Methods Retrospective clinical information and magnetic resonance imaging (MRI) findings of the proband were collected. Trio-whole exome sequencing (WES) including the proband and his parents was performed to explore the genetic causes, while Sanger sequencing was subsequently used to validate the variants identified by Trio-WES in the pedigree. Furthermore, prenatal molecular genetic diagnosis was carried out through amniocentesis to investigate the status of pathogenic mutations in the fetus by Sanger sequencing at an appropriate gestational age. Results The two siblings were both clinically diagnosed with rapid regression in psychomotor development milestones. Brain MRI showed cerebellar atrophy and typical bilaterally symmetrical T2/FLAIR hyperintense signal changes in periventricular areas, indicating periventricular leukomalacia, and myelin sheath dysplasia. Trio-WES revealed two heterozygous variants in PlA2G6 associated with clinical manifestations in the proband: a novel maternally inherited variant c.217C>T (p.Gln73*) and a previously reported paternally inherited recurrent pathogenic variant c.1894C>T (p.Arg632Trp). These two heterozygous mutations were also detected in the younger brother who had similar clinical features as the proband. The novel variant c.217C>T was classified as “pathogenic (PVS1 + PM2 + PP3),” while the variant c.1894C>T was “pathogenic” (PS1 + PM1 + PM2 + PM3 + PP3) based on the latest American College of Medical Genetics and Genomics (ACMG) guidelines on sequence variants. Combining the molecular evidence and clinical phenotypes, the diagnosis of INAD was established for the two affected siblings. The two variants that were identified were considered the causative mutations for INAD in this family. Prenatal diagnosis suggested compound heterozygous mutations of c.217C>T and c.1894C>T in the fetus, indicating a high risk of INAD, and the parents chose to terminate the pregnancy. Conclusion We identified a novel pathogenic mutation that broadens the mutation spectrum of PLA2G6 and will provide clues for the molecular diagnosis of INAD. Furthermore, our study has helped to elucidate the causative genetic factors of this Chinese family with INAD effectively and efficiently by using the emerging Trio-WES strategy and providing precise genetic counseling for this family.
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Moosavi SA, Hasannejad-Asl B, Kourosh Arami M, Nasuti M, Oguz MC, Naseri AH. Confirmatory test versus screening test analyses for fetal mosaic variations; a large scale study. ALEXANDRIA JOURNAL OF MEDICINE 2022. [DOI: 10.1080/20905068.2021.2010450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Seyed Akbar Moosavi
- Department of Medical Laboratory Sciences, Iran University of Medical Sciences, Tehran, Iran
- Neuroscience Research Center, Iran University of Medical Science, Tehran, Iran
- Tehran Women Hospital, AST Genetic Lab, Tehran, Iran
| | - Behnam Hasannejad-Asl
- Biotechnology Department, School of Advaned Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoumeh Kourosh Arami
- Neuroscience Research Center, Iran University of Medical Science, Tehran, Iran
- Department of Basic Sciences, Allied Medicine College, Iran University of Medical Sciences, Tehran, Iran
| | - Mahsa Nasuti
- Department of Microbiology, Islamic Azad University of Karaj, Karaj, Iran
| | - Mehmet Cemal Oguz
- Health Service, Vocational College of Mardin Artuklu University, Mardin, Turkey
| | - Abdol-Hossain Naseri
- Department of Medical Laboratory Sciences, Iran University of Medical Sciences, Tehran, Iran
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Suzuki E, Kobori Y, Katsumi M, Ushijima K, Uchiyama T, Okada H, Miyado M, Fukami M. Copy-number analysis of Y-linked loci in young men with non-obstructive azoospermia: Implications for the rarity of early onset mosaic loss of chromosome Y. Reprod Med Biol 2020; 19:178-181. [PMID: 32273824 PMCID: PMC7138941 DOI: 10.1002/rmb2.12321] [Citation(s) in RCA: 3] [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: 11/27/2019] [Revised: 01/24/2020] [Accepted: 02/11/2020] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Mosaic loss of chromosome Y (mLOY) is a common feature in elderly men. If mLOY can also occur in young men, it may lead to spermatogenic failure due to loss of spermatogenic genes. Indeed, previous studies detected the 45,X/46,XY karyotype in a few young men with spermatogenic failure. The present study aimed to clarify the frequency of cryptic mLOY in reproductive-aged men with spermatogenic failure. METHODS We studied 198 men at ages 24-55 years who presented with etiology-unknown non-obstructive azoospermia. Prior this study, these patients underwent G-banding analysis for 20 leukocytes and were found to have 46,XY karyotype. We analyzed copy numbers of chromosome Y in blood cells by using semi-quantitative multiplex PCR for AMELY/AMELX, array-based comparative genomic hybridization (CGH) for the AMELY locus, and droplet digital PCR for SRY, USP9Y, and UTY. RESULTS Multiplex PCR showed borderline low AMELY/AMELX ratios in three patients. However, for the three patients, CGH excluded deletion of the AMELY locus, and droplet digital PCR suggested preserved copy numbers of all tested loci. CONCLUSION This study highlights the rarity of leukocyte mLOY in reproductive-aged men with spermatogenic failure. In addition, our data imply that standard karyotyping is sufficient to screen early onset mLOY.
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Affiliation(s)
- Erina Suzuki
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Yoshitomo Kobori
- Department of UrologyDokkyo Medical University Saitama Medical CenterKoshigayaJapan
| | - Momori Katsumi
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
- Department of NCCHD Child Health and DevelopmentGraduate SchoolTokyo Medical and Dental UniversityTokyoJapan
| | - Kikumi Ushijima
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Toru Uchiyama
- Department of Human GeneticsNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Hiroshi Okada
- Department of UrologyDokkyo Medical University Saitama Medical CenterKoshigayaJapan
| | - Mami Miyado
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Maki Fukami
- Department of Molecular EndocrinologyNational Research Institute for Child Health and DevelopmentTokyoJapan
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