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Mutational profile by targeted next generation sequencing of non-small cell lung cancer in the Mexican population
- Source :
- Salud Pública de México, Vol 61, Iss 3, may-jun, Pp 308-317 (2019)
- Publication Year :
- 2018
-
Abstract
- Targeted next-generation sequencing (t-NGS) has revolutionized clinical diagnosis allowing multiplexed detection of genomic alterations. This study evaluated the profile of somatic mutations by t-NGS in Mexican patients with nonsmall cell lung cancer (NSCLC).Genomic DNA was extracted from 90 lung adenocarcinomas and sequences were generated for a panel of 48 cancer genes. Epidermal Growth Factor Receptor (EGFR) mutations were detected in parallel by quantitative PCR.The mutational profile of NSCLC revealed alterations in 27 genes, where TP53 (47.8%) and EGFR (36.7%) exhibited the highest mutation rates. EGFR Q787 mutations were present in 14 cases (15.6%), 10 cases had exon 19 deletions (11.1%), seven cases had L858R (7.8%). The mutational frequency for genes like EGFR, MET, HNF1A, HER2 and GUSB was different compared to caucasian population.t-NGS improved NSCLC treatments efficacy due to its sensitivity and specificity. A distinct pattern of somatic mutations was found in Mexican population.La secuenciación dirigida de nueva generación (SNG) permite la detección múltiple de mutaciones. Este estudio evalúa el perfil de mutaciones somáticas por SNG en pacientes mexicanos con cáncer de pulmón de células no pequeñas(CPCNP).Se aisló ADN de 90 muestras de pacientes con CPCNP y se analizarón 48 genes relacionados con cáncer. Las mutaciones del receptor del factor de crecimiento epidérmico (EGFR) se detectaron por PCR cuantitativa.Se detectaron alteraciones en 27 genes. Las mutaciones más frecuentes fueron TP53 (47.8%) y EGFR (36.7%). En el gen EGFR, 14 casos fueron mutaciones Q787 (15.6%), 10 presentaron microdeleciones en el exón 19 (11.1%), y siete en L858R (7.8%). La frecuencia de mutación en EGFR, MET, HNF1A, HER2 y GUSB fue diferente en comparación con población caucásica.NGS modifica el tratamiento del paciente con CPCNP por su sensibilidad y especificidad para detectar mutaciones. La población mexicana presenta un perfil mutacional particula.
- Subjects :
- Adult
Male
Mutation rate
Lung Neoplasms
Biology
lung
03 medical and health sciences
Exon
Carcinoma, Non-Small-Cell Lung
medicine
Humans
Epidermal growth factor receptor
Prospective Studies
Lung cancer
Mexico
Aged
Aged, 80 and over
030505 public health
adenocarcinoma
lcsh:Public aspects of medicine
Public Health, Environmental and Occupational Health
Cancer
High-Throughput Nucleotide Sequencing
dna sequencing
lcsh:RA1-1270
Sequence Analysis, DNA
Middle Aged
medicine.disease
genomic DNA
Real-time polymerase chain reaction
mutational analysis, dna
Mutation
Cancer research
biology.protein
Adenocarcinoma
Female
0305 other medical science
Subjects
Details
- ISSN :
- 16067916
- Volume :
- 61
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Salud publica de Mexico
- Accession number :
- edsair.doi.dedup.....2c0fa47fe9a9e077585e7608473b89de