Comparative genomics between matched solid and lepidic portions of semi-solid lung adenocarcinomas

Area of Science:

• Oncology
• Genomics
• Pulmonary Medicine

Background:

• Understanding genetic changes driving lung cancer progression from lepidic to invasive stages in semi-solid lesions (SSL) is crucial.
• Biomarkers are needed to predict the transition to solid, invasive cancer within SSL.

Purpose of the Study:

• To investigate genetic alterations associated with the transition from lepidic to invasive lung cancer within SSL.
• To identify potential biomarkers for predicting invasive potential in SSL.

Main Methods:

• Retrospective analysis of patients with surgically resected SSL.
• Comparison of clinical characteristics and survival between SSL and solid adenocarcinomas.
• Next-generation sequencing and gene expression profiling of different tumor components within SSL specimens.

Main Results:

• EGFR, KRAS, and DNMT3A driver mutations were found in both lepidic and invasive portions of SSL.
• CEACAM5 was significantly upregulated in the invasive solid portions of SSL.
• SPP1 was identified as a unique biomarker for the invasive component of SSL.

Conclusions:

• Common lung cancer driver mutations are present early in SSL development.
• CEACAM5 and SPP1 are promising biomarkers for assessing invasive potential in semi-solid lung lesions.
• Further research into the role of CEACAM5 and SPP1 in lung lesion evolution is warranted.