Background
Lung cancer is the most common cancer type worldwide, with non-small cell lung cancer being the most frequently studied. Identifying of cancer-related genes in non-small cell lung cancer is crucial for developing individualized treatment, particularly as mutation profiles can vary by country and ethnicity.
Aims
To identify comprehensive mutation profiles in a cohort of Turkish patients with non-small cell lung cancer using the next-generation sequencing.
Study Design
Retrospective cross-sectional study.
Methods
In total, 72 cancer-related genes and 4149 variants were recorded in the non-small cell lung cancer panel, and their relationship with clinical and histopathological features was investigated through next-generation sequencing.
Results
Among 507 patients, 420 (82.8%) were males and 87 (17.2%) were females. Percentages of
phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha
(11%),
B-Raf proto-oncogene, serine/threonine kinase
(8%), and
neurofibromatosis type 1
(6%) mutations were higher than those reported in the literature. Males had a higher rate of
Kirsten rat sarcoma 2 viral oncogene homolog
mutations (
P
= .102), whereas
epidermal growth factor receptor
mutations were statistically more common in females (
P
= .001). Multiple variants of strong significance were identified in 6.3% patients diagnosed with adenocarcinoma, most of whom were smokers.
Kirsten rat sarcoma 2 viral oncogene homolog
and
phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha
mutations were most commonly observed.
Conclusion
This study shows that Turkish patients have higher rates of PIK3CA, BRAF and NF1 mutations compared to the literature. Studies to determine the molecular profile specific to Turkish people will guide clinicians in treatment and contribute significantly to determining priorities in diagnosis.