Genotyping of EGFR Mutations from Bronchial Cytological Specimens in Slovakian Lung Cancer Patients.
Adv Exp Med Biol
; 934: 49-61, 2016.
Article
in En
| MEDLINE
| ID: mdl-27235166
ABSTRACT
Non-small cell lung cancer (NSCLC) is a histologically and molecularly heterogeneous disease predominating in Slovakia among newly diagnosed oncological disorders and leading in the number of associated deaths. NSCLC diagnostics has advanced especially in molecular typing of epidermal growth factor receptor (EGFR) and subsequent targeted molecular therapy using tyrosine-kinase inhibitor(s) (TKI). The selection of patients for targeted therapy, we describe in this study, is mostly guided through bronchial smears rather than more invasive biopsies. We identified 32 adenocarcinomas, 40 squamous-cell carcinomas, 12 large-cell carcinomas, along with two unspecified carcinomas, in the NSCLC group who had bronchial smears taken. The assessment of tumor cell number, and genomic DNA allowed for screening of clinically relevant somatic EGFR mutations in 86 patients. Using quantitative PCR, 12 patients (14 %) were recommended for EGFR-TKI therapy. The most prevalent EGFR HIT-a in the somatosome, terms introduced and defined in this study, were exon 19 deletions, which were found in combination with the TKI-resistant p.T790M mutation in exon 20 in one patient. The study describes a method that is minimally invasive, reliable, and meets all criteria of routine molecular diagnostics. A multidisciplinary approach of EGFR genotyping from bronchial smears implemented in the study allows expanding targeted molecular therapy in NSCLC patients.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carcinoma, Non-Small-Cell Lung
/
ErbB Receptors
/
Genotype
/
Lung Neoplasms
/
Mutation
Type of study:
Prognostic_studies
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
Europa
Language:
En
Journal:
Adv Exp Med Biol
Year:
2016
Document type:
Article
Affiliation country:
Slovakia