The invention discloses a new method for
lung adenocarcinoma biomarker screening, prognosis model construction and biological
verification. The method comprises the following steps: 1, carrying out data preprocessing on an original
gene expression matrix; 2, carrying out biomarker screening on the data obtained after preprocessing; 3, constructing a prognosis model by using the
lung adenocarcinoma prognosis marker subjected to the multi-step
feature selection; 4, carrying out
signal analysis on the selected marker after modeling. The invention has the beneficial effects that 45
gene markers are verified by using a linear
support vector machine model, AUC and ACC which are poorly verified by five folds are used as model evaluation indexes, and the final result is that AUC is equal to 0.98, and ACC is equal to 0.92. The result is obviously superior to that of most traditional
gene marker selection methods, the marker related to the
lung cancer can be found out, the lifetime of a
lung cancer patient can be accurately predicted, meanwhile, a channel related to lung
adenocarcinoma occurrence can be explored, and the occurrence mechanism of lung adenocarcinoma can be explored.