Project description:Background: The clonal basis of relapse in acute lymphoblastic leukemia (ALL) is complex and not fully understood. Methods: Next-generation sequencing (NGS), array comparative genomic hybridization (aCGH), and multiplex-ligation-dependent probe amplification (MLPA) were carried out in matched diagnosis-relapse samples from 13 B-cell precursor acute lymphoblastic leukemia (BCP-ALL) patients to identify patterns of genetic evolution that could account for the phenotypic changes associated with disease relapse. Findings: The integrative genomic analysis of aCGH, MLPA and NGS revealed that 100% of BCP-ALL patients showed at least one genetic alteration at diagnosis and relapse. In addition, there was a significant increase in the frequency of chromosomal lesions at the time of relapse (median, 6 alterations per sample) relative to that at diagnosis (median, 47 alterations) (p = 0.019). The combination of MLPA and aCGH techniques showed that IKZF1 was the most frequently deleted gene. Notably, TP53 was the most frequently mutated gene at relapse (31%). Two TP53 mutations were detected only at relapse, whereas the three others showed an increase of their mutational burden at relapse. Interpretation: Clonal evolution patterns were heterogeneous, involving acquisition, loss and maintenance of lesions at relapse. Therefore, this study confirmed that BCP-ALL is a genetically dynamic disease with distinct genetic profiles at diagnosis and relapse. The combination of the NGS, aCGH, and MLPA approaches enables better molecular characterization of the genetic profile in ALL patients during the evolution from diagnosis to relapse.
Project description:Advances in Next Generation Sequencing (NGS) have made available a wealth of information that had previously been inaccessible to researchers and clinicians. NGS has been applied to understand genomic, transcriptomic, and epigenomic changes and gained traction as a significant tool capable of accelerating diagnosis, prognosis, and biomarker discovery. However, these NGS assays have yet to be practical methods for patient stratification or diagnosis because of the gap between the tiny quantities of biomaterials provided by a clinical sample and the large DNA input required by most of these assays. Current library preparation methodologies typically require large input amounts of DNA and a long and complicated manual process. Here we present a microfluidic reactor system for NGS library preparation, capable of reducing the number of pipetting steps significantly, automating much of the process, while supporting extremely low DNA input requirement (10 pg per library). This largely automated technology will allow for low-input preparations of 8 libraries simultaneously while reducing batch to batch variation and operator hands-on time.
Project description:Exosomes and exosomal miRNAs from the plasma of volunteers were isolated from thyroid nodules and papillary tyriod cancer patients . Profiling of exosomal miRNA was performed using next-generation sequencing(NGS) to identify miRNA candidates for diagnosis.
Project description:Analysis of gene mutations and copy number variation status by an in-house next-generation sequencing (NGS) panel. The panel includes 571 genes of interest in oncology for diagnosis, prognosis, and theranostics including chordomas genes of interest.
2022-10-29 | GSE216417 | GEO
Project description:Clinical Exome NGS panel for Hereditary Pheochromocytoma and Paraganglioma diagnosis.
Project description:Next Generation Sequencing (NGS) was carried out on subjects who visited an oriental medicine clinic due to recurrent sleep disturbance, and 40 individuals (17 male and 23 female) were set as the sleep diorder (SD) group based on their scores on the sleep distrurbance questionnaire of Pittsburgh sleep quality index (PSQI). The control group consisted of 40 healthy individuals (20 males and females each), as assessed by both subjective diagnosis and test for metabolic syndrome factors.Ten individuals (five males and females each) from the SD and the control group, respectively, were allocated for NGS analysis.
Project description:Whole transcriptome RNA-seq of pediatric infant (<1year of aget at diagnosis) patients affected by B-cell precursor Acute Lymphoblastic leukemia (BCP-ALL). The aim of the study is to identify fusion gene rearrangements involved in childhood leukemia, using Next Generation Sequencing (NGS)
Project description:Targeted RNA-seq of pediatric infant (<1year of age at diagnosis) patients affected by B-cell precursor Acute Lymphoblastic leukemia (BCP-ALL). The aim of the study is to identify fusion gene rearrangements involved in childhood leukemia, using a custom targeted panel for RNA analysis by NGS.
Project description:The male hypogonadism is closely associated with adipose tissue metabolism. Domestic pig has been a widely used experimental animal in biomedical research because of their similarity to humans in body size and other physiological/anatomical features. However, the transcriptional responses of pigs to male hypogonadism in subcutaneous adipose tissue remain unclear so far. We used microarrays to detail the transcriptional profiles of barrows and boars, and determined the gene networks regulated by castration-induced sex hormone deficiency. This study will help to provide a significant addition to knowledge about fat accumulation and lipid metabolism in hypogonadal man.