Journal
CYTOPATHOLOGY
Volume 33, Issue 1, Pages 14-22Publisher
WILEY
DOI: 10.1111/cyt.13045
Keywords
biomarkers; carcinoma; cytological techniques; lung; mesothelioma; molecular diagnostic techniques
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Molecular testing is feasible on various cytological preparations, but rigorous validation is necessary for different fixatives and cytology preparations before implementation. This is crucial for successful molecular testing in a clinical setting.
There is growing evidence that molecular testing is feasible on all types of cytological preparation, which is fortunate as more diagnostic markers and biomarkers for targeted therapies are discovered for use in pulmonary and pleural malignancies. In this article we will discuss the pre-analytic, analytic, and post-analytic (interpretive) considerations for successful implementation of molecular tests for diagnostic and predictive markers in respiratory and pleural cytology. The vast majority of laboratories are familiar with, and have validated their molecular protocols for, formalin-fixed paraffin-embedded surgical specimens, which are not directly applicable to cytology specimens. Thus, rigorous validation must be performed for each type of fixative and cytology preparation before it is implemented in the clinical setting.
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