![]() ![]() We recommend researchers or clinicians to use the appropriate chip with barcoding technology on the basis of the sample number. Our results showed that all Ion chips are applicable in noninvasive prenatal fetal aneuploidy diagnosis. All chips were well consistent with each other. All samples were correctly classified even with low-throughput chip, and, among the four chips, the 316 chip had the highest read mapped ratio, correlation coefficient, mean read length and phred quality score. Results such as read mapped ratio, correlation coefficient and phred quality score were calculated and parallelly compared. Eight maternal plasma DNA samples, including four pregnancies with normal fetuses and four with trisomy 21 fetuses, were sequenced on Ion Torrent 314/316/318/PI chips, respectively. We conducted a comparative analysis of the performance of four different Ion chips in detecting fetal chromosomal aneuploidies. It is commendable that, with less data and relevant cost also, an accurate result can be achieved owing to the high sensitivity and specificity of such kind of technology. ![]() Semiconductor high-throughput sequencing, represented by Ion Torrent PGM/Proton, proves to be feasible in the noninvasive prenatal diagnosis of fetal aneuploidies. ![]() Wang, Yanlin Wen, Zujia Shen, Jiawei Cheng, Weiwei Li, Jun Qin, Xiaolan Ma, Duan Shi, Yongyong Thus, this study indicates the utility of a cost and time efficient tool such as Ion Torrent sequencing to screen cancer mutations for the development of personalized cancer therapy.Ĭomparison of the performance of Ion Torrent chips in noninvasive prenatal trisomy detection. The sequencing analysis revealed a high occurrence of mutations along the TP53 locus (9.7%) in our sample set. We sequenced 737 loci from 45 cancer-related genes in 238 human gastric adenocarcinoma samples using the Ion Torrent Ampliseq Cancer Panel. In this study, we aim to identify genetic mutations in the genes which are targeted by drugs in clinical use or are under development in individual human gastric adenocarcinoma samples using Ion Torrent sequencing. Recent advances in new next-generation DNA sequencing technologies, such as the semiconductor-based Ion Torrent sequencing platform, makes DNA sequencing cheaper, faster, and more reliable. Until recently, identifying genetic mutations on an individual basis by DNA sequencing remained a daunting task. Since unique mutations have been observed in individual human cancer samples, identification and characterization of the molecular alterations underlying individual gastric adenocarcinomas is a critical step for developing more effective, personalized therapies. Gastric adenocarcinoma, the most common type of gastric cancer, is heterogeneous and its incidence and cause varies widely with geographical regions, gender, ethnicity, and diet. Gastric cancer is the one of the major causes of cancer-related death, especially in Asia. Xu, Zhi Huo, Xinying Ye, Hua Tang, Chuanning Nandakumar, Vijayalakshmi Lou, Feng Zhang, Dandan Dong, Haichao Sun, Hong Jiang, Shouwen Zhang, Guangchun Liu, Zhiyuan Dong, Zhishou Guo, Baishuai He, Yan Yan, Chaowei Wang, Lu Su, Ziyi Li, Yangyang Gu, Dongying Zhang, Xiaojing Wu, Xiaomin Wei, Xiaowei Hong, Lingzhi Zhang, Yangmei Yang, Jinsong Gong, Yonglin Tang, Cuiju Jones, Lindsey Huang, Xue F Chen, Si-Yi Chen, Jinfei Genetic mutation analysis of human gastric adenocarcinomas using ion torrent sequencing platform. We also summarize the enhancements in the associated platform, including sample preparation, data processing, and engagement of the broader development community through open source and crowdsourcing initiatives. We described in detail the progress in chip scaling, sequencing throughput, read length, and accuracy. Here we provide an overview of this semiconductor chip based sequencing technology, and summarize the progress made since its commercial introduction. Recently, such a sequencing chip, and the associated sequencing platform, has been developed and commercialized by Ion Torrent, a division of Life Technologies, Inc. To achieve this, ideally the entire sensory apparatus of the sequencer would be embodied in a standard semiconductor chip, manufactured in the same fab facilities used for logic and memory chips. One way to achieve this is to recast DNA sequencing in a format that fully leverages the manufacturing base created for computer chips, complementary metal-oxide semiconductor chip fabrication, which is the current pinnacle of large scale, high quality, low-cost manufacturing of high technology. In order for next-generation sequencing to become widely used as a diagnostic in the healthcare industry, sequencing instrumentation will need to be mass produced with a high degree of quality and economy. Progress in ion torrent semiconductor chip based sequencing.
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