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A Survey of Next-Generation–Sequencing Technologies

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Next Generation Sequencing Technologies in Medical Genetics

Part of the book series: SpringerBriefs in Genetics ((BRIEFSGENETICS))

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Abstract

Innovative application of new technologies in research is one of the major factors driving advances in knowledge acquisition. In 1977, Maxam and Gilbert reported an approach in which terminally labeled DNA fragments were subjected to base-specific chemical cleavage and the reaction products were separated by gel electrophoresis (Maxam and Gilbert 1977). In an alternative approach, Sanger described the use of chain-terminating dideoxynucleotide analogs that caused base-specific termination of primed DNA synthesis (Sanger et al. 1977; Chap. 1). Improvements of the Sanger method led to utilization in the research community and eventually in the clinical diagnosis of many genetic disorders (http://www.ncbi.nlm.nih.gov/sites/GeneTests/). In a factory-based format, Sanger sequencing was the method of choice for the first human genome at an estimated cost of $2.7 billion (Fig. 1.1; Chap. 1). In 2008, by comparison, the genome of Dr. James Watson was sequenced over a 2-month period for less than $1 million (Wheeler et al. 2008). With the commercial availability of high-throughput massively parallel DNA sequencing platforms in the past few years, complete sequencing of the whole human genome can be done commercially today in 2–3 months at a cost below $10,000 (Bick and Dimmock 2011; Fig. 1.1). Since their introduction, next-generation sequencing (NGS) technologies have constantly improved and the costs have steadily decreased. A legitimate question therefore is what role targeted gene capture will play if whole-genome sequencing (WGS) can be done for about $1,000 in the future, with the ability to survey the human genome in an unbiased manner. This chapter describes NGS technologies and briefly explores how they have been translated into molecular diagnostics. The clinical applications of NGS will be covered in detail in Chaps. 4–8.

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© 2013 C. Alexander Valencia

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Valencia, C.A., Pervaiz, M.A., Husami, A., Qian, Y., Zhang, K. (2013). A Survey of Next-Generation–Sequencing Technologies. In: Next Generation Sequencing Technologies in Medical Genetics. SpringerBriefs in Genetics. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9032-6_2

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