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Article Abstract
Introduction: Maximising alternative sample types for genomics in advanced lung cancer is important because bronchoscopic samples may sometimes be insufficient for this purpose. Further, the clinical applications of comprehensive molecular analysis such as whole genome sequencing (WGS) are rapidly developing. Diff-Quik cytology smears from EBUS TBNA is an alternative source of DNA, but its feasibility for WGS has not been previously demonstrated.
Methods: Diff-Quik smears were collected along with research cell pellets.
Results: Tumour content of smears were compared to research cell pellets from 42 patients, which showed good correlation (Spearman correlation 0.85, P < 0.0001). A subset of eight smears underwent WGS, which presented similar mutation profiles to WGS of the matched cell pellet. DNA yield was predicted using a regression equation of the smears cytology features, which correctly predicted DNA yield > 1500 ng in 7 out of 8 smears.
Conclusions: WGS of commonly collected Diff-Quik slides is feasible and their DNA yield can be predicted.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10444633 | PMC |
| http://dx.doi.org/10.1007/s00408-023-00631-9 | DOI Listing |
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