Utilization of cell-transferred cytologic smears in detection of EGFR and KRAS mutation on adenocarcinoma of lung.
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| Abstract |
Cell-transfer technique has been proven useful for performing immunocytochemistry on fine-needle aspiration smears. However, its utility for EGFR and KRAS molecular testing has not been validated. Molecular testing was performed using the cell-transfer technique on both Papanicolaou-stained ethanol-fixed and Hema 3-stained air-dried smears from 32 fine-needle aspiration samples that had diagnoses of adenocarcinoma of the lung, and then was compared to the results of the corresponding formalin-fixed paraffin-embedded tissues. The molecular testing was successfully performed on 32 of 32 ethanol-fixed and 31 of 32 air-dried samples. The molecular results on ethanol-fixed and air-dried smears showed 100% agreement. There is 100% (32/32) agreement for the EGFR and 97% (31/32) agreement for the KRAS between the cell-transfer technique and formalin-fixed paraffin-embedded tissues. One discrepant case was due to low percentage of tumor cells on the smears. Cell-transfer technique is a reliable alternative method for EGFR and KRAS testing if the cell blocks lack adequate cellularity.
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| Authors | Howard H Wu, Joseph P Eaton, Kelly J Jones, Harvey M Cramer, Melissa L Randolph, Kristin M Post, Amanda Malek, Sarah Bilbo, Joyashree D Sen, Shaoxiong Chen, Liang Cheng |
| Journal | Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc (Mod Pathol) Vol. 27 Issue 7 Pg. 930-5 (Jul 2014) ISSN: 1530-0285 [Electronic] United States |
| PMID | 24336155 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
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