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Abstract
Diagnostic tests, based on nucleic acid extracts from formalin-fixed and paraffin-embedded tissues, are now becoming increasingly common due to the introduction of biological agents for cancer therapy. Unfortunately, the formalin-fixed and paraffin-embedded tissues are heterogeneous in terms of processing and tissue type, and this has an impact on downstream molecular techniques, especially RNA-based techniques. The present review deals with most of the variables connected to the extraction of nucleic acids from formalin-fixed paraffin-embedded tissues, ranging from tissue processing to quality control of extracts. The most recent peer-reviewed publications (mostly published in the past 5 years) and information provided by company websites have been analyzed to compile this review.
Acknowledgements
The authors would like to thank Valentina Melita for the English revision of the manuscript.
Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
No writing assistance was utilized in the production of this manuscript.