3329 results for "*geneti*"

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• Whole-exome sequencing of pediatric solid tumors

  Pediatric solid tumors are rare, whose pathogenesis is poorly understood. To investigate the genetic basis of pediatric solid tumors, we performed whole exome sequencing in 16 rhabdmyosarcoma (RMS) cases and 7 pleuropulmonary blastoma (PPB) cases.

  Study JGAS000036

• Development of a diagnostic gene panel for Gorlin syndrome and its application to liquid biopsy

  Gorlin syndrome is an autosomal dominant, rare disease caused by mutations in PTCH1, PTCH2, and SUFU with various symptoms in multiple organs making early diagnosis challenging. In this study, we generated a Gorlin syndrome gene panel that could help to overcome the difficulties in diagnosing Gorlin syndrome using a single test. This gene panel is time- and cost-efficient and highly reliable with a high-quality score of 30, on-target ratio, and coverage depth, and could detect more mutations than whole-exome sequencing of the same patient. Although the current in silico prediction tools have a limited genetic database of gene mutations in rare hereditary diseases, five prediction tools were used to identify pathological mutations. Pathogenic gene mutations were detected not only in PTCH1 but also in PTCH2 in five out of 12 patients with Gorlin syndrome diagnosed based on clinical symptoms. Using this gene panel, we showed the same gene mutation in the patients and their asymptomatic relatives; hence, it has enabled a highly reliable genetic diagnosis of Gorlin syndrome at a low cost requiring only blood sample.

  Study JGAS000308

• Whole genome, whole exome and transcriptome sequencing of 10 ccRCC with Von Hippel-Lindau disease

  The aim of this study is to investigate genetic and transcriptomic profiles of inherited ccRCC with Von Hippel-Lindau disease.

  Study JGAS000544

• Identification of responsible genes and development of standardized medicine for familial breast cancer by genetic analysis with NGS technology

  Aims: To clarify risk of germline variants of known causal genes for Hereditary Breast Ovarian Cancer Syndrome in Japan by combinatorial analysis of somatic and germline variants in the breast cancer tissue. Methods: Target caputure analysis by using Illumina HiSeq 2000; the panel genes are 119 genes including 30 HBOC known causal genes. Participants/Materials: 108 whole blood and 124 primary tumor samples from familial breast cancer patients.

  Study JGAS000224

• Demographic History and Local Adaptation in Asian Population

  Due to harboring high genetic and cultural diversity of populations, Central Asia is one key area for understanding the recent evolutionary history of humans. In this project, our aims include: (1) to resequence genome sequences with high sequencing depth for Central Asian populations Balti; (2) to discern the genomic diversity, populations structure and demographic history of Balti; (3) to investigate the genetic mechanisms for local adaptations in Balti.

  Study JGAS000238

• RNA-seq analysis of BMP-stimulated glioma initiating cells

  Bone morphogenetic protein (BMP) signaling has been shown to suppress progression of glioblastoma by promoting astrocytic differentiation; however, roles of BMP signaling in cell proliferation and apoptosis of glioblastoma cells remains to be elucidated. We here performed RNA-seq analysis of glioma initiating cells to identify transcriptional target(s) of BMP.

  Study JGAS000077

• Reconstruction of the personal information from human genome reads in gut metagenome sequencing data

  Human DNA present in fecal samples can result in a small number of human reads in gut shotgun metagenomic sequencing data. However, it is currently unclear how much personal information can be reconstructed from such reads and this has not been quantitatively evaluated. Such a quantitative evaluation is necessary to clarify the ethical concerns related to data sharing and to enable the efficient use of human genetic information in stool samples, such as for research and forensics. Here, we used genomic approaches to reconstruct personal information from fecal metagenomes of 343 Japanese individuals with associated human genotype data.

  Study JGAS000600

• Elucidation of molecular mechanism of NAFLD-HCC

  We analysed the somatic mutation profile of 69 genes with recurrent genetic alterations reported in HCC using surgically-resected tumor tissues of non-viral HCC patients.

  Study JGAS000523

• Genetic analysis in monozygotic twins discordant for bipolar disorder

  To identify genes relevant to bipolar disorder, an exome sequence analysis was conducted in 3 pairs of healthy monozygotic twins as control twins in this study. In addition to this data set, an exome sequence analysis was also conducted in several monozygotic twins discordant for bipolar disorder.

  Study JGAS000014

• Induction of fetal meiotic oocytes from embryonic stem cells in cynomolgus monkeys

  Human in vitro oogenesis provides a framework for clarifying the mechanism of human oogenesis. To create its benchmark, it is vital to promote in vitro oogenesis using a model physiologically close to humans. Here, we establish a foundation for in vitro oogenesis in cynomolgus (cy) monkeys: cy female embryonic stem cells harboring one active and one inactive X chromosome (Xa and Xi, respectively) differentiate robustly into primordial germ cell-like cells, which in xenogeneic reconstituted ovaries develop efficiently into oogonia and, remarkably, further into meiotic oocytes at the zygotene stage. This differentiation entails a comprehensive epigenetic reprogramming, including Xi reprogramming, yet, as partly observed in vivo, Xa and Xi remain epigenetically asymmetric with incomplete Xi reactivation. In humans and monkeys, the Xi epigenome in pluripotent stem cells functions as an Xi-reprogramming determinant. We further show that developmental-pathway over-activations with suboptimal up-regulation of relevant meiotic genes impede in vitro meiotic progression. Cy in vitro oogenesis exhibits critical homology with the human system, including with respect to bottlenecks, providing a salient model for advancing human in vitro oogenesis.

  Study JGAS000573

• Comprehansive analysis of somatic mutations and genetic variations with whole genome sequencing

  Indetification of stractural variations by using of long read whole genome sequencing data

  Study JGAS000516

• Neuron-specifc methylome analysis of Alzheimer's disease brain

  Neuron-specific methylome analysis of Alzheimer's disease brain to detect epigenetic changes related to the pathomechanism.

  Study JGAS000125

• Immunohistochemical and molecular pathological search in gastrointestinal tumors

  Purpose: RSPO fusions are recently identified recurrent genetic alterations in colorectal cancer (CRC), which lead to WNT pathway activation and are potential therapeutic targets. We aimed to investigate the clinicopathological and molecular features of RSPO fusion-positive CRCs. Experimental Design: We screened 1019 CRCs for RSPO fusions using multiplex reverse transcription polymerase chain reaction. RSPO fusion-positive tumors were characterized for their clinicopathological features and subjected to whole exome sequencing (WES). Results: Our analysis identified 29 CRCs with RSPO fusions (2.8%), consisting of 5 with an EIF3E-RSPO2 fusion and 24 with PTPRK-RSPO3 fusions. The patients were 17 females and 12 males with the median age of 64 years. Thirteen tumors were located in the right colon, 8 were in the left colon, and 8 were in the rectum. Histologically, most of the tumors (24/29, 83%) were classified as adenocarcinomas, not otherwise specified. However, about half of the tumors (13/29, 45%) had a focal or extensive mucinous component, which is significantly more frequent compared with RSPO fusion-negative tumors (13%; p = 8.1 �� 10-7). Four tumors (14%) were mismatch repair-deficient, three of which were associated with MLH1 promoter methylation. WES identified KRAS, BRAF, and NRAS mutations in a total of 27 cases (93%). In contrast, pathogenic mutations in major WNT pathway genes other than RSPO fusions were virtually absent. The presence of an RSPO fusion tended to show shorter overall and recurrence-free survivals in stage II and III patients although the differences were not significant. Conclusions: RSPO fusion-positive CRCs constitute a rare subgroup of CRCs with several characteristic clinicopathological and genetic features. The mutual exclusivity with other WNT pathway gene alterations supports RSPO fusions as valid therapeutic targets in CRC.

  Study JGAS000538

• DNA methylation dynamics during early human development

  DNA methylation is globally reprogrammed during mammalian preimplantation development, which has been well characterized in the mouse but not in other mammals. Here we report on the single base-resolution DNA methylome of human gametes and blastocysts. Near complete demethylation of the paternal genome was apparent, except for tandem repeat-containing CpG-rich regions, whereas the maternal genome was essentially resistant to replication-dependent global demethylation. The human oocyte methylome was characterized by a unique bimodal distribution of gene body methylation, a particular promoter methylation profile and a high proportion of hypomethylated transposable elements. Methylome and transcriptome comparisons between the human and mouse suggested species-specific regulation of many genes including the important DNA methylation regulators. Our findings are essential to understand the unique gene regulatory mechanisms during early human development and will facilitate preimplantation epigenetic diagnosis of human embryos.

  Study JGAS000006

• Study for establishment for effective screening and diagnosis of Lynch syndrome

  The purpose of this study is to establish efficient diagnostic procedure of the Lynch syndrome in Japan and to determine the MMR gene mutation spectrum and clinicopathologic characteristics.The person who is suspected Lynch Syndrome and gives informed consent for participation in this study .To carry out the project ?Construction of clinical and genetic integral information database to help Lynch syndrome management?, the following three are required. 1) screening for Lynch syndrome-suspected cases, 2) genetic testing to define Lynch syndrome, 3) integration of detailed clinical data of Lynch syndrome, and 4) The case which has not been diagnosed Lynch syndrome, is investigated causing gene.

  Study JGAS000638

• The genetic analysis of circulating tumor DNA in blood of the digestive cancer patients to investigate the prognostic factors of metastasis and reccurence.

  A Darwinian evolutionary shift occurred early in the neutral evolution of advanced colorectal carcinoma (CRC) and copy number aberrations (CNA) were essential in the transition from adenoma to carcinoma. Subsequent to the primary evolution, we now focus on the evolutionary principle of the genome to foster postoperative recurrence of CRC. SO, We compared CNA, single nucleotide variance (SNV), RNA sequences between 8 primary and 11 metastatic sites from 10 CRCR cases.

  Study JGAS000221

• Global Architecture of anti-Tumor B-Cell Immunity against Gastric Cancer

  Recent successes in tumor immunotherapies have warranted the importance of tumor immunity. Compared to the T-cell immunity, B-cell immune system in cancer is largely elusive. Here we immunogenetically profiled tumor-infiltrating B-cell and T-cell repertoires for exome- characterized diffuse-type gastric carcinoma (DGC), which is remarkable for its B-cell infiltrations, unraveling previously un-defined architectures of B-cell immunity and its interplays with T-cell immunity in cancer. We also performed transcriptome analysis to enumerate the proportions of tumor-infiltrating immune cells in the gastric cancer environment .

  Study JGAS000103

• High-coverage whole exome sequence in non-TRU-type lung adenocarcinomas

  In order to elucidate the key genetic events in non-TRU-type lung cancer, we selected 43 non-TRU-type lung adenocarcinomas and performed a whole exome sequence and RNA-seq analysis using a next-generation sequencer. The results of the analysis identified mutations in TP53, KRAS and NKX2-1 as the top three significantly mutated genes, while the EGFR mutation was rare in this cohort. Eight NKX2-1 mutations (5 frameshift, 2 nonsense, and one missense) were identified, with one case harboring two distinct NKX2-1 mutations (missense and frameshift). All NKX2-1 mutants were transcriptionally inactive in reporter assays. Histologically, invasive mucinous adenocarcinomas accounted for most of the NKX2-1 mutations (5 cases), while 1 enteric and 1 acinar adenocarcinoma harbored the NKX2-1 mutation.

  Study JGAS000105

• A study on personalized medicine in genitourinary cancers using genetic biomarkers

  We present a patient with MSI-high castration-resistant PC who showed a remarkable and durable response to pembrolizumab. Whole exome sequencing revealed approximate tumor mutation burden of 61 mutations/Mb as well as biallelic loss of MSH2.

  Study JGAS000510

• Whole exome sequencing of 69 trios with bipolar disorder

  We performed whole exome sequencing to trios with bipolar disorder to elucidate genetic architecture of bipolar disorder including de novo mutations and transmitted variants.

  Study JGAS000273

• Genetic architecture of microRNA expression and its link to complex diseases in the Japanese population

  We mapped microRNA expression quantitative trait loci by quantifying microRNA expression using small RNA sequencing.

  Study JGAS000504

• Somatic inflammatory gene mutations accumulate in human ulcerative colitis epithelium

  We performed whole exome sequencing and targeted sequencing of ulcerative colitis with/without colitis associated neoplasm and healthy indivisuals. The aim of this study was to calculate the influence of inflammation and age on a count of genetic mutations in colonic epithelium, and to identify the specific signal pathways on which the significant genetic mutations accumulating in ulcerative colitis patients' colonic epithelium.

  Study JGAS000199

• Global Architecture of anti-Tumor B-Cell Immunity against Gastric Cancer

  Recent successes in tumor immunotherapies have warranted the importance of tumor immunity. Compared to the T-cell immunity, B-cell immune system in cancer is largely elusive. Here we immunogenetically profiled tumor-infiltrating B-cell and T-cell repertoires for exome- characterized diffuse-type gastric carcinoma (DGC), which is remarkable for its B-cell infiltrations, unraveling previously un-defined architectures of B-cell immunity and its interplays with T-cell immunity in cancer. We also performed transcriptome analysis to enumerate the proportions of tumor-infiltrating immune cells in the gastric cancer environment .

  Study JGAS000141

• Comprehensive genomic analysis for AYA with acute lymphoblastic leukemia

  AYA with B-ALL showed extremely inferior outcomes when compared to children. Genetic basis undelying AYA B-ALL is largely unknown. We performed integrated analysis of RNA-seq (hum0045���JGAS000047) and target DNA-seq.

  Study JGAS000276

• Analysis of the relationship between disease phenotype and genotype in patients with Alzheimer's disease

  In this study, we explored the genetic background of Alzheimer's disease by intercomparative analysis of the genetic background of sporadic Alzheimer's disease and disease phenotypes derived from iPS cells.

  Study JGAS000383