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These technologies generally can be grouped into three approaches: polymerase chain reaction (PCR), hybridization, and next-generation sequencing (NGS). [22] Currently, a lot of PCR and hybridization assays have been approved by FDA as in vitro diagnostics. [47] NGS assays, however, are still at an early stage in clinical diagnostics. [48]
Moreover, for pathogen sequencing the use of controls is of fundamental importance ensuring mNGS assay quality and stability over time; PhiX is used as sequencing control, then the other controls include the positive control, an additional internal control (e.g., spiked DNA or other known pathogen) and a negative control (usually water sample). [2]
Illumina claimed that Oxford Nanopore infringed its patents on the use of a biological nanopore, Mycobacterium smegmatis porinA (MspA), for sequencing systems. [64] [65] In August 2016 the parties settled their lawsuit. [66] In February 2020, Illumina filed a patent infringement suit against BGI relating to its "CoolMPS" sequencing products. [67]
Helix uses NGS to sequence a proprietary assay called Exome+, a version of Exome sequencing which according to the company provides 100 times more data than was previously available. [9] Exome+ includes all 22,000 protein-coding genes as well as additional regions known to be of interest. [ 10 ]
Single-cell sequencing examines the nucleic acid sequence information from individual cells with optimized next-generation sequencing technologies, providing a higher resolution of cellular differences and a better understanding of the function of an individual cell in the context of its microenvironment. [1]
Approved Drug Products with Therapeutic Equivalence Evaluations, commonly known as the Orange Book, is a publication produced by the United States Food and Drug Administration (FDA), as required by the Drug Price and Competition Act (Hatch-Waxman Act). The Hatch-Waxman Act was created to '"strike a balance between two competing policy interests: