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1.
Article in English | WPRIM | ID: wpr-929011

ABSTRACT

YWHAE gene is located on chromosome 17p13.3, and its product 14-3-3epsilon protein belongs to 14-3-3 protein family. As a molecular scaffold, YWHAE participates in biological processes such as cell adhesion, cell cycle regulation, signal transduction and malignant transformation, and is closely related to many diseases. Overexpression of YWHAE in breast cancer can increase the ability of proliferation, migration and invasion of breast cancer cells. In gastric cancer, YWHAE acts as a negative regulator of MYC and CDC25B, which reduces their expression and inhibits the proliferation, migration, and invasion of gastric cancer cells, and enhances YWHAE-mediated transactivation of NF-κB through CagA. In colorectal cancer, YWHAE lncRNA, as a sponge molecule of miR-323a-3p and miR-532-5p, can compete for endogenous RNA through direct interaction with miR-323a-3p and miR-532-5p, thus up-regulating K-RAS/ERK/1/2 and PI3K-AKT signaling pathways and promoting the cell cycle progression of the colorectal cancer. YWHAE not only mediates tumorigenesis as a competitive endogenous RNA, but also affects gene expression through chromosome variation. For example, the FAM22B-YWHAE fusion gene caused by t(10; 17) (q22; p13) may be associated with the development of endometrial stromal sarcoma. At the same time, the fusion transcript of YWHAE and NUTM2B/E may also lead to the occurrence of endometrial stromal sarcoma. To understand the relationship between YWHAE, NUTM2A, and NUTM2B gene rearrangement/fusion and malignant tumor, YWHAE-FAM22 fusion gene/translocation and tumor, YWHAE gene polymorphism and mental illness, as well as the relationship between 17p13.3 region change and disease occurrence. It provides new idea and basis for understanding the effect of YWHAE gene molecular mechanism and genetic variation on the disease progression, and for the targeted for the diseases.


Subject(s)
14-3-3 Proteins/metabolism , Breast Neoplasms/genetics , Cell Line, Tumor , Cell Proliferation/genetics , Cell Transformation, Neoplastic/genetics , Colorectal Neoplasms/genetics , Endometrial Neoplasms , Female , Gene Expression Regulation, Neoplastic , Humans , MicroRNAs/genetics , Phosphatidylinositol 3-Kinases/metabolism , Sarcoma, Endometrial Stromal/pathology , Stomach Neoplasms/genetics , Transcription Factors/genetics , Translocation, Genetic
2.
Article in Chinese | WPRIM | ID: wpr-935336

ABSTRACT

To investigate the efficacy and value of optical genome mapping (OGM) in detecting chromosomal structural variations. In a clinical study about high-precision analysis of genomic structural variation for complex genetic diseases, a retrospective study was performed on the cases with karyotyping at the department of Obstetrics and Gynecology, and Endocrinology of Peking Union Medical College Hospital from January to December 2021. Ten cases with abnormal karyotype was detected by OGM. Partial cases were verified by fluorescence in situ hybridization (FISH), SNP array or CNV-seq. Results of ten cases, nine were detected with abnormality by OGM, including unbalanced chromosomal rearrangements (n=3), translocation (n=5) and paracentric inversion (n=1), and the results were in concordance with other standard assays. However, one case with breakpoint and reconnected at centromere has not been detected. In conclusion, ten samples were comprehensively analyzed by karyotyping, FISH, SNP array or CNV-seq, and OGM, and results demonstrated that optical genome mapping as a new technology can not only detect unbalanced rearrangements such as copy number variants as well as balanced translocations and inversions, but more importantly, it can refine breakpoints and orientation of duplicated segments or insertions. So it can contribute to the diagnosis of genetic diseases and prevent birth defect. However, the current technology is not yet capable of detecting breakpoints of balanced structural variations lying within unmapped regions.


Subject(s)
Chromosome Mapping , Female , Humans , In Situ Hybridization, Fluorescence , Karyotyping , Pregnancy , Retrospective Studies , Translocation, Genetic
3.
Asian Journal of Andrology ; (6): 248-254, 2022.
Article in English | WPRIM | ID: wpr-928551

ABSTRACT

Apparently balanced chromosomal structural rearrangements are known to cause male infertility and account for approximately 1% of azoospermia or severe oligospermia. However, the underlying mechanisms of pathogenesis and etiologies are still largely unknown. Herein, we investigated apparently balanced interchromosomal structural rearrangements in six cases with azoospermia/severe oligospermia to comprehensively identify and delineate cryptic structural rearrangements and the related copy number variants. In addition, high read-depth genome sequencing (GS) (30-fold) was performed to investigate point mutations causative of male infertility. Mate-pair GS (4-fold) revealed additional structural rearrangements and/or copy number changes in 5 of 6 cases and detected a total of 48 rearrangements. Overall, the breakpoints caused truncations of 30 RefSeq genes, five of which were associated with spermatogenesis. Furthermore, the breakpoints disrupted 43 topological-associated domains. Direct disruptions or potential dysregulations of genes, which play potential roles in male germ cell development, apoptosis, and spermatogenesis, were found in all cases (n = 6). In addition, high read-depth GS detected dual molecular findings in case MI6, involving a complex rearrangement and two point mutations in the gene DNAH1. Overall, our study provided the molecular characteristics of apparently balanced interchromosomal structural rearrangements in patients with male infertility. We demonstrated the complexity of chromosomal structural rearrangements, potential gene disruptions/dysregulation and single-gene mutations could be the contributing mechanisms underlie male infertility.


Subject(s)
Azoospermia/genetics , Chromosome Aberrations , Humans , Infertility, Male/genetics , Male , Oligospermia/genetics , Translocation, Genetic
4.
Article in Chinese | WPRIM | ID: wpr-928448

ABSTRACT

OBJECTIVE@#To investigate the clinical phenotype and genetic diagnosis of an infant featuring multiple hair and hyperbilirubinemia.@*METHODS@#Conventional G-banding analysis, chromosomal microarray analysis (CMA) and fluorescence in situ hybridization (FISH) for the patient were conducted, G-banding analyses of peripheral blood for the infant's parents were also performed.@*RESULTS@#We investigated an infant who carries a unbalanced, maternally inherited karyotype 46, X, der (X) t (X;1) (p11.22; q21.3) in which CMA and FISH analyses disclosed a 1q21.3q44 duplication of 93.03 Mb and Xp22.33p11.22 deletion of 54.53 Mb.@*CONCLUSION@#The phenotypes of this infant can probably be attributed to the 1q21.3q44 duplication and Xp22.33p11.22 deletion, which were maternally inherited.


Subject(s)
Chromosome Banding , Chromosome Deletion , Genetic Testing , Humans , In Situ Hybridization, Fluorescence , Karyotyping , Translocation, Genetic
5.
Article in Chinese | WPRIM | ID: wpr-928420

ABSTRACT

OBJECTIVE@#To assess the value of copy number variation sequencing (CNV-seq) and karyotyping in the prenatal diagnosis for carriers of balanced translocations.@*METHODS@#Clinical records of 135 amniocentesis samples of balanced translocation carriers undergoing simultaneous CNV-seq and karyotyping were analyzed. Chromosomal aberrations were defined as those can definitely lead to birth defects definitely, which included chromosomal numerical abnormality, large deletion/duplication and pathogenic copy number variations (pCNVs).@*RESULTS@#The detection rates for karyotyping and CNV-seq were 4.44% (6/135) and 5.93% (8/135) respectively, and the latter had a detection rate of 1.48(2/135) higher than the former. A total of 68 fetal chromosomal translocations were detected by karyotying analysis.@*CONCLUSION@#For couples carrying a balanced translocation, simultaneous CNV-seq and karyotyping is conducive to the detection of fetal chromosomal abnormalities and genetic counseling.


Subject(s)
Chromosome Aberrations , Chromosome Disorders/genetics , DNA Copy Number Variations , Female , Humans , Karyotyping , Pregnancy , Prenatal Diagnosis , Translocation, Genetic
6.
Rev. Ciênc. Méd. Biol. (Impr.) ; 20(3): 472-475, dez 20, 2021. fig
Article in Portuguese | LILACS | ID: biblio-1354351

ABSTRACT

Introdução: o carcinoma papilífero de tireoide é a neoplasia maligna que mais acomete o sistema endócrino, correspondendo a cerca de 90% dos casos. Diante de sua frequência, nas últimas décadas, foi registrado um aumento do número de casos na população pediátrica e, devido a isso, o número de crianças e adolescentes submetidos à tireoidectomia se tornou cada vez maior. Enquanto as alterações gênicas mais encontradas em adultos com carcinoma papilífero concentram-se em mutações pontuais, na população pediátrica as fusões gênicas são mais frequentes, com destaque para os rearranjos RET/PTC. Objetivo: relatar aspectos clínico-patológicos do carcinoma papilífero de tireoide, associado à fusão do gene RET, em criança submetida à tireoidectomia e radioiodoterapia adjuvante. Em seguida, discute-se a importância do diagnóstico molecular na escolha de terapias relevantes no tratamento do CPT. Caso Clínico: trata-se de uma paciente do sexo feminino, 11 anos de idade, submetida a tireoidectomia total e esvaziamento cervical após diagnóstico do referido carcinoma. O estudo anatomopatológico revelou um carcinoma metastático em linfonodos regionais. Utilizou-se uma amostra de tecido em bloco de parafina para a realização de um sequenciamento de nova geração, que apontou a existência da fusão gênica TRIM24-RET. Conclusão: os dados deste relato de caso evidenciam que a mutação RET/PTC6 está muito associada à população pediátrica e que testes moleculares, como o NGS, são de extremo valor na identificação dessas alterações gênicas e, consequentemente, na terapia a ser adotada para cada paciente.


Introduction: thyroid papillary carcinoma is the malignant neoplasm that most affects the endocrine system, corresponding to about 90% of cases. Given its frequency, in recent decades, there has been an increase in the number of cases in the pediatric population and, as a result, the number of children and adolescents undergoing thyroidectomy has become increasingly larger. While the most common gene alterations found in adults with papillary carcinoma are concentrated in point mutations, in the pediatric population gene fusions are more frequent, with emphasis on the RET/PTC rearrangements. Objective: to report clinical and pathological aspects of papillary thyroid carcinoma associated with RET gene fusion in a child undergoing thyroidectomy and adjuvant radioiodine therapy. Then, the importance of molecular diagnosis in choosing relevant therapies in the treatment of PTC is discussed. Clinical Case: this is an 11-year-old female patient who underwent total thyroidectomy and neck dissection after diagnosis of the aforementioned carcinoma. The anatomopathological study revealed a metastatic carcinoma in regional lymph nodes. A tissue sample in paraffin block was used to perform a new generation sequencing, which showed the existence of the TRIM24-RET gene fusion. Conclusion: the data in this case report show that the RET/PTC6 mutation is closely associated with the pediatric population and that molecular tests, such as the NGS, are extremely valuable in identifying these genetic alterations and, consequently, in the therapy to be adopted for each patient.


Subject(s)
Humans , Female , Child , Thyroidectomy , Translocation, Genetic , Child , Thyroid Cancer, Papillary
7.
Oncol. (Guayaquil) ; 31(2): 141-154, 31 de agosto 2021.
Article in Spanish | LILACS | ID: biblio-1284452

ABSTRACT

Introducción: La leucemia linfoblástica aguda (LLA) es la neoplasia maligna de mayor frecuencia en la infancia; advertir sus alteraciones moleculares y citogenéticas permite establecer el riesgo, el pronóstico asociado y además plantear esquemas terapéuticos apropiados; el objetivo de este estudio es conocer la prevalencia de estas alteraciones en nuestra población. Metodología: Estudio de tipo retrospectivo y transversal, basado en los registros de las alteraciones moleculares y citogenéticas de los pacientes pediátricos diagnosticados con leucemia linfoblástica aguda durante el periodo comprendido entre enero 2014 a diciembre de 2018, en el Hospital del Instituto Oncológico Nacional "Dr. Juan Tanca Marengo". Resultados: Se incluyeron 338 pacientes, de los cuales el principal grupo etario lo constituyo el de 0 a 4 años; el inmunofenotipo más observado fue el B-común. En el 24.56% de los casos se detectó altercaciones estructurales, principalmente por estudios de biología molecular; siendo la más común la translocación t(12;21). Se obtuvieron resultados por citogenética en 167 pacientes, en cuales la principal alteración numérica correspondió a la hiperdiploidía de entre 47 a 51 cromosomas. Conclusión: Los avances en la caracterización molecular y citogenética de la LLA, permiten mejorar la estratificación de su riesgo; y establecer estrategias terapéuticas que permitan una mejoría en la sobrevida.


Introduction: Acute lymphoblastic leukemia (ALL) is the most frequent malignant neoplasm in childhood; Noting its molecular and cytogenetic alterations allows to establish the risk, the associat-ed prognosis and also to propose appropriate therapeutic schemes; The objective of this study is to know the prevalence of these alterations in our population. Methods: Retrospective and cross-sectional study, based on the records of molecular and cytogenetic alterations of pediatric patients diagnosed with acute lymphoblastic leukemia during the period from January 2014 to December 2018, at the National Oncological Institute Hospital "Dr. Juan Tanca Marengo". Results: 338 patients were included, of which the main age group was made up of 0 to 4 years; the most observed immunophenotype was B-common. In 24.56% of the cases, structural alterations were detected, mainly by molecular biology studies; the most common being the t (12; 21) translocation. Cytogenetics results were obtained in 167 patients, in which the main numerical alteration corresponded to hyperdiploidy of between 47 and 51 chromosomes. Conclusions: Advances in the molecular and cytogenetic characterization of ALL make it possible to improve the stratification of its risk; and establish therapeutic strategies that achieve an improvement in survival.


Introdução: A leucemia linfoblástica aguda (LLA) é a neoplasia maligna mais comum na infância; Observar suas alterações moleculares e citogenéticas permite estabelecer o risco, o prognóstico associado e também propor esquemas terapêuticos adequados; O objetivo deste estudo é conhecer a prevalência dessas alterações em nossa população. Metodologia: Estudo retrospectivo e transversal, baseado nos registros de alterações moleculares e citogenéticas de pacientes pediátricos com diagnóstico de leucemia linfoblástica aguda no período de janeiro de 2014 a dezembro de 2018, no Hospital del Instituto Oncológico Nacional "Dr. Juan Tanca Marengo ". Resultados: Foram incluídos 338 pacientes, cuja faixa etária principal era de 0 a 4 anos; o imunofenótipo mais observado foi B-comum. Em 24,56% dos casos, foram detectadas alterações estruturais, principalmente por estudos de biologia molecular; o mais comum é a translocação t (12; 21). Os resultados citogenéticos foram obtidos em 167 pacientes, nos quais a principal alteração numérica correspondeu à hiperdiploidia entre 47 e 51 cromossomos. Conclusão: Os avanços na caracterização molecular e citogenética da LLA permitiram melhorar a estratificação de risco; e estabelecer estratégias terapêuticas que permitam uma melhora na sobrevida.


Subject(s)
Humans , Infant, Newborn , Infant , Child, Preschool , Child , Adolescent , Leukemia, Biphenotypic, Acute , Precursor T-Cell Lymphoblastic Leukemia-Lymphoma , Translocation, Genetic , Child , Cytogenetics
8.
Rev. méd. Chile ; 149(6): 945-949, jun. 2021. graf, tab
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1389534

ABSTRACT

We describe the management and follow-up of a 20-year-old male with acute myeloblastic leukemia with translocation (8; 21) [t (8; 21)]. A quantitative polymerase chain reaction for t(8; 21) in bone marrow was performed at diagnosis and after three consolidations with high doses of cytarabine. Currently, the management of this type of leukemias has been oriented towards the early detection of relapse. The concept of minimal or measurable residual disease, as the burden of leukemia cells that persist undetected, is an important tool in the therapeutic decision and follow-up of these patients.


Subject(s)
Humans , Male , Adult , Young Adult , Leukemia, Myelomonocytic, Acute/drug therapy , Leukemia, Myeloid, Acute/genetics , Translocation, Genetic , Bone Marrow , Follow-Up Studies , Neoplasm, Residual
9.
Rev. bras. anal. clin ; 53(1): 90-96, 20210330. tab, ilus
Article in Portuguese | LILACS | ID: biblio-1291778

ABSTRACT

Descrição: Relato de caso de um paciente com um transcrito raro (e1a2) na Leucemia Mieloide Crônica (LMC) e outro com uma translocação rara na Síndrome Mielodisplásica (SMD). Discussão: O transcrito e1a2 possui frequência de 1% entre os casos de LMC, já a translocação t(11,17)(q23;q21) não foi evidenciada em paciente com SMD do tipo Anemia Refratária com Excesso de Blastos (AREB) do tipo 2. Conclusão: Ambos os casos apresentados possuem associação incomum entre fenótipo e genótipo. A correlação da clínica com os achados laboratoriais é importante para a determinação fidedigna do diagnóstico e prognóstico destes pacientes.


Description: Case report of a patient with a rare transcript (e1a2) in Chronic Myeloid Leukemia (CML) and another with a rare translocation in Myelodysplastic Syndrome (SMD). Discussion: The transcript e1a2 has a frequency of 1% in CML cases, whereas t (11,17) (q23; q21) translocation was not observed in a patient with type of Refractory Anemia with Excess Blasts (AREB) type 2. Conclusion: Both cases reported have unusual association between phenotype and genotype. The correlation of the clinic with the laboratory findings is important for the reliable determination of the diagnosis and prognosis of these patients.


Subject(s)
Humans , Female , Middle Aged , Phenotype , Translocation, Genetic , Anemia, Refractory , Leukemia, Myelogenous, Chronic, BCR-ABL Positive , Leukemia , Hematologic Neoplasms , Genotype
10.
Autops. Case Rep ; 11: e2020227, 2021. tab, graf
Article in English | LILACS | ID: biblio-1142414

ABSTRACT

Secretory carcinoma of the breast (SBC) is a rare breast neoplasm. Most of the patients present at an early stage with a relatively indolent clinical course. Lymph node and distant metastasis are also very infrequent. The histomorphological features of the secretory breast carcinoma are quite characteristic. Predominantly three histological patterns, solid, microcystic, and tubular, have been noted with copious amounts of intra and extracellular secretory material. Most commonly, no positivity for estrogen receptor (ER), progesterone receptor (PR) and ERBB2(HER2/neu) is observed in SBCs. As SBC can occasionally be hormone receptor-positive, they should not be categorized in the triple-negative breast carcinoma (TNBC) group in general. A very characteristic genetic translocation t (12;15) has been noted in this rare tumor, resulting in a fusion between ETV6 and NTRK3 proteins. We present a case of a 60-year-old lady who presented with right breast lump of 1-month duration and was managed by lumpectomy and sentinel lymph node dissection. Axillary dissection was not performed because the sentinel lymph node biopsy was negative. Postoperative radiotherapy was given to the right breast with a boost to the tumor bed. No adjuvant chemotherapy was given No recurrence has been noted even after a year of the completion of treatment


Subject(s)
Humans , Female , Middle Aged , Breast Neoplasms/pathology , Carcinoma/pathology , Translocation, Genetic , Secretory Component , Sentinel Lymph Node Biopsy
11.
Article in Chinese | WPRIM | ID: wpr-922033

ABSTRACT

OBJECTIVE@#To provide genetic counseling for a couple with recurrent detection of fetal structural abnormality during second trimester pregnancy.@*METHODS@#The fetal tissue and peripheral blood samples of the couple were subjected to G banded chromosomal analysis, copy number variation sequencing (CNV-seq) and fluorescence in situ hybridization (FISH) assays.@*RESULTS@#CNV-seq has detected a 6.59 Mb duplication at 7p22.3-p22.1 and a 3.81 Mb deletion at 4p16.3 in the fetal tissue, though conventional karyotyping results of both parents were normal. FISH has confirmed that the father has harbored a cryptic translocation of t(4;7)(7p+,4q+,4p+,7q+).@*CONCLUSION@#The ultrasonographic abnormality of the fetuses may be attributed to the 7p microduplication and 4p microdeletion derived from the cryptic translocation carried by the father. Reciprocal translocation of tiny chromosomal segments should be suspected for couples with recurrent adverse pregnancies but apparently normal karyotypes.


Subject(s)
Chromosome Disorders , DNA Copy Number Variations , Female , Humans , In Situ Hybridization, Fluorescence , Karyotyping , Pregnancy , Translocation, Genetic
12.
Article in Chinese | WPRIM | ID: wpr-921999

ABSTRACT

OBJECTIVE@#To carry out preimplantation genetic testing (PGT) for a couple where the husband was affected by osteogenesis imperfecta combined with balanced translocation using the karyomapping technique.@*METHODS@#Blastocysts were detected using karyomapping, the carrier status of COL1A1 c.760G>A (p.Gly254Arg) variant and the carrier status of the translocated chromosome were analyzed simultaneously.@*RESULTS@#For a total of 10 blastocysts, two euploid blastocysts were found to not carry the COL1A1 c.760G>A (p.Gly254Arg) variant but a balanced translocation. After transplanting one of the blastocysts, clinical pregnancy was achieved. Amniocentesis at 18th gestational week and prenatal genetic testing was in keeping with the result of PGT.A healthy female was born at 40+4 weeks gestation.@*CONCLUSION@#For patients simultaneously carrying genetic variant and balanced chromosomal translocation, PGT can be performed with efficiency by the use of karyomapping method.


Subject(s)
Blastocyst , Female , Fertilization in Vitro , Genetic Testing , Humans , Osteogenesis Imperfecta/genetics , Pregnancy , Preimplantation Diagnosis , Spouses , Translocation, Genetic
13.
Article in Chinese | WPRIM | ID: wpr-921952

ABSTRACT

OBJECTIVE@#To assess the application value of mapping allele with resolved carrier status (MaReCs) technique for preimplantation genetic testing (PGT).@*METHODS@#The characteristics of MaReCs for PGT and outcome of patients were retrospectively analyzed.@*RESULTS@#Compared with those who could not use the technique, carriers who have used the MaReCs technique were younger, had significantly higher level of anti-Mullerian hormone, more antral follicles, occytes, mature occytes, biopsied embryos and euploid embryos, and lower risks for de novo chromosomal abnormality (P 0.05). Carriers undergoing MaReCs test could preferentially select embryos with normal chromosome structures for the transfer.@*CONCLUSION@#Application of MaReCs has a prerequisite for having a minimum number of occytes and biopsied embryos and using discarded embryos sometimes. MaReCs is efficient for the detection of carrier status of embryos and attaining higher rate of pregnancy and live birth, which can significantly improve the outcome for couples carrying chromosomal translocations.


Subject(s)
Alleles , Aneuploidy , Blastocyst , Female , Fertilization in Vitro , Genetic Testing , Humans , Pregnancy , Preimplantation Diagnosis , Retrospective Studies , Translocation, Genetic
14.
Article in English | WPRIM | ID: wpr-880662

ABSTRACT

Chronic myeloid leukemia with a significant increase of monocytes is rare and difficult to identify from chronic myelo-monocytic leukemia in clinic. A 31-year-old male patient with systemic pain was initially diagnosed as chronic myelo-monocytic leukemia, who was finally diagnosed as chronic myeloid leukemia by fusion gene and chromosome examination. In addition to the typical Ph chromosome, a rare chromosome translocation t(2; 7)(p13; p22) was observed. The detection of monocyte subsets by multi-parameter flow cytometry is a diagnostic marker to distinguish the above 2 diseases. The relationship between fusion genes and mononucleosis is not clear. Tyrosine kinase inhibitors or allogeneic hematopoietic stem cell transplantation can be used in the treatment for this disease.


Subject(s)
Adult , Humans , Karyotype , Karyotyping , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics , Male , Monocytes , Translocation, Genetic
15.
Article in Chinese | WPRIM | ID: wpr-880050

ABSTRACT

OBJECTIVE@#To deeply understand the clinical manifestation, laboratory examination characteristics, diagnosis and treatment of an eight p11 myeloproliferative syndrome (EMS) with rare phenotypes.@*METHODS@#The clinical and laboratory characteristics and the process of allogeneic hematopoietic stem cell transplantation (allo-HSCT) were summarized in 1 rare EMS case involving T/B/myeloid cells. Meanwhile, 2 similar cases in the previous literature were also discussed.@*RESULTS@#The bone marrow examination indicated that the patient with B-cell acute lymphocytic leukemia. The lymph node biopsy showed that the patient was T lymphoblastic/myeloid lymphoma. The 8p11 abnormality was found by the examination of bone marrow chromosomes. The RT-PCR examination showed that the BCR-ABL fused gene was negtive. The FGFR1 breakage was found by using the FISH with FGFR1 probe in lymph node. The Mutation of FMNL3, NBPF1 and RUNX1 genes was found by using the whole exome sequencing. The patient received allo-HSCT under CR2. By the follow-up till to September 2019, the patient survived without the above-mentioned disease.@*CONCLUSION@#EMS manifest as neoplasms involving T-lineage, B-lineage, and myeloid-lineage simultaneously is extremely rare. Although the FGFR1 gene-targeted therapy can be conducted, allo-HSCT should be actively considered.


Subject(s)
Bone Marrow , Chromosomes, Human, Pair 8 , Formins , Hematologic Neoplasms , Humans , Myeloproliferative Disorders/genetics , Phenotype , Receptor, Fibroblast Growth Factor, Type 1/genetics , Translocation, Genetic
16.
Article in Chinese | WPRIM | ID: wpr-879591

ABSTRACT

OBJECTIVE@#To explore the genetic basis for a child featuring short stature, saddle nose, cryptorchidism and mental retardation.@*METHODS@#The child and his parents were subjected to G-banded karyotyping and chromosomal microarray analysis (CMA).@*RESULTS@#The child was found to have a 46,Y,der(X)t(X;Y)(p22;q11)mat karyotype. CMA has revealed a 8.3 Mb deletion at Xp22.33p22.31 and a 43.3 Mb duplication at Yq11.221qter. His mother had a karyotype of 46,X,der(X)t(X;Y)(p22;q11). His father had a normal karyotype.@*CONCLUSION@#The child has carried an unbalanced translocation der(X)t(X;Y) (p22;q11) derived from his mother. His clinical phenotype has correlated with the size and position of X chromosome deletion. Compared with the females, abnormal phenotypes such as mental retardation and growth retardation of male carriers are more severe.


Subject(s)
Child , Chromosome Banding , Chromosomes, Human, X/genetics , Female , Humans , In Situ Hybridization, Fluorescence , Karyotyping , Male , Translocation, Genetic
17.
Article in Chinese | WPRIM | ID: wpr-879590

ABSTRACT

OBJECTIVE@#To carry out cyto- and molecular genetic testing for a child featuring facial dysmorphism and attention deficit and hyperactive disorder.@*METHODS@#The child was subjected to routine peripheral blood lymphocyte chromosomal karyotyping, fluorescence in situ hybridization (FISH) and single nucleotide polymorphism array (SNP-array) analyses.@*RESULTS@#The child's facial dysmorphism included low-set ears, curly ear auricle, protuberance of eyebrow arch, nostril notch, short and flat philtrum and thin upper lip. SNP-array revealed that he has carried a 4.883 Mb deletion at 2q37. His chromosomal karyotype was ultimately determined as 45, XY, der(2;21) (2pter→ 2q37.3::21p13→ 21p10::20p10→ 20pter), der(20) (21qter→ 21q10::20q10→ 20qter).@*CONCLUSION@#A rare case of 2q37 deletion syndrome involving three chromosomes was discovered. Combined use of various cyto- and molecular genetic techniques is crucial for the diagnosis of chromosomal abnormalities with complex structures.


Subject(s)
Child , Chromosome Deletion , Chromosomes , Chromosomes, Human, Pair 2 , Humans , In Situ Hybridization, Fluorescence , Karyotyping , Male , Translocation, Genetic
18.
Article in Chinese | WPRIM | ID: wpr-879589

ABSTRACT

OBJECTIVE@#To explore the genetic basis for a neonate with Pierre-Robin sequence.@*METHODS@#The child was subjected to chromosomal karyotyping, single nucleotide polymorphism array (SNP-array)-based comparative genomic hybridization and fluorescence in situ hybridization (FISH) analysis.@*RESULTS@#The child has featured microgthnia, glossoptosis, upper airway obstruction, mandible dehiscence and short neck. He was found to have a karyotype of 46,XY,der(4)add(4)(q34). Her mother's karyotype was determined as 46,XX,t(1;4)(q43;q34), while his father was 46,XY. SNP-array analysis suggested the child to be arr [hg19] 1q42.2q44 (232 527 958-249 202 755)× 3; 4q34.3q35.2 (168 236 901-190 880 409)× 1. The result of SNP-array for both parents was normal. FISH analysis confirmed that his mother has carried a balanced t(1;4)(q42;34) translocation. The aberrant chromosome 4 in the child has derived from his mother's translocation, which gave rise to partial 1q trisomy and 4q monosomy.@*CONCLUSION@#The 1q42.2q44 duplication and 4q34.3q35.2 deletion of the child probably underlay his abnormal phenotype of Pierre-Robin sequence.


Subject(s)
Child , Comparative Genomic Hybridization , Female , Humans , In Situ Hybridization, Fluorescence , Infant, Newborn , Male , Monosomy , Pierre Robin Syndrome/genetics , Translocation, Genetic , Trisomy/genetics
19.
Rev. Univ. Ind. Santander, Salud ; 52(1): 51-59, ene.-mar. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1092273

ABSTRACT

Resumen Introducción: La incidencia de las anomalías congénitas es de 0,5% dentro de los cuales el 0,1-0,3% corresponden a anomalías cromosómicas estructurales, entre ellas están las translocaciones no balanceadas en las que hay pérdida o ganancia de información genética que da como resultado manifestaciones fenotípicas con compromiso en la salud de quienes las padecen. Reporte de caso: Se describe un paciente escolar con una translocación no balanceada t(5;7) (q22;p15) de origen paterno y sus repercusiones. Discusión: Cuando existen reordenamientos en el material genético, las manifestaciones clínicas están ligadas a la localización de los puntos de ruptura y como consecuencia a los genes que estén incluidos en estos segmentos, tal como se presentó en nuestro caso índice. Conclusiones: Es importante el estudio de estos pacientes ya que deben permanecer en vigilancia médica por el riesgo de desarrollar patologías relacionadas con alteraciones en los genes implicados en el reordenamiento genético.


Abstract Introduction: The incidence of congenital anomalies is 0,5%, wich 0,1 to 0,3% belong to structural chromosomic anomalies, between these are unbalanced translocations in which there are loss or gain of genetic information that results in phenotypic manifestations with health compromise of whom suffer it. Case report: A scholar patient with an unbalanced translocation t(5;7) (q22;p15) of paternal origin and its repercussions is described. Discussion: When there are rearrangements in genetic material, the clinical manifestations are linked to breakpoints localizations and as consequence to the genes included in this segments, as presented in our index case. Conclusions: The study of these patients is important because they must remain under medical surveillance due the risk of developing pathologies related with gene alterations implicated in the genetic rearrangement.


Subject(s)
Humans , Translocation, Genetic , Congenital Abnormalities , Chromosomes, Human, Pair 5 , Chromosomes, Human, Pair 7 , Karyotype
20.
Article in Chinese | WPRIM | ID: wpr-826532

ABSTRACT

OBJECTIVE@#To assess the value of preimplantation genetic test (PGT) based on next generation sequencing (NGS) for achieving pregnancy for 71 couples with one partner carrying a reciprocal or Robertsonian translocation.@*METHODS@#Following blastocyst biopsy, whole genome of single cell was amplified, and PGT was performed by NGS. The subjects included 60 couples with one partner carrying a reciprocal translocation and 11 with one partner carrying a Robertsonian translocation. The results of PGT, implantation and prenatal diagnosis for all of the couples were analyzed.@*RESULTS@#In total 301 embryos were obtained for the 71 couples through 92 ovulation cycles, 287 (95.3%) of which were successfully diagnosed by NGS. Eighty-five euploidy embryos were identified for the reciprocal translocation carrier group. In 18 cycles, no euploid embryo was obtained. Cancellation rate for the cycles was 19.5%. For reciprocal translocation carrier group and Robertsonian translocation carrier group, the rates for implantation, early abortion, and clinical pregnancy were 89.3% (42/47), 25.5% (12/47), 63.8% (30/47), and 88.8% (8/9), 22.2% (2/9), and 66.6% (6/9), respectively. The result of prenatal diagnosis was consistent with the that of PGT.@*CONCLUSION@#PGT based on NGS can effectively identify euploid embryos and reduce recurrent abortions and termination of pregnancies, achieving a satisfactory rate for clinical pregnancy.


Subject(s)
Female , Fertilization in Vitro , Genetic Testing , High-Throughput Nucleotide Sequencing , Humans , Pregnancy , Preimplantation Diagnosis , Methods , Translocation, Genetic
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