Evaluation of the value of multiparameter combined analysis of serum markers in the early diagnosis of gastric cancer

BACKGROUND In early gastric cancer(GC),tumor markers are increased in the blood.The levels of these markers have been used as important indexes for GC screening,early diagnosis and prognostic evaluation.However,specific tumor markers have not yet been discovered.Diagnosis based on a single tumor marker has limited significance.The detection rate of GC is still very low.AIM To improve the diagnostic value of blood markers for GC.METHODS We used a multiparameter joint analysis of 77 indexes of malignant GC and gastric polyp(GP),64 indexes of GC and healthy controls(Ctrls).RESULTS By analyzing the data,there are 27 indexes in the final Ctrls vs GC with P values<0.01,the area under the curve(AUC)of albumin is the largest in Ctrls vs GC,and the AUC was 0.907.30 indexes in GP vs GC have P values<0.01.Among them,the D-dimer showed an AUC of 0.729.The 27 indexes in Ctrls vs GC and 30 indexes in GP vs GC were used for binary logistic regression,discriminant analysis,classification tree analysis and artificial neural network analysis model.For the ability to distinguish between Ctrls vs GC,GP vs GC,artificial neural networks had better diagnostic value when compared with classification tree,binary logistic regression,and discriminant analysis.When compared Ctrl and GC,the overall prediction accuracy was 92.9%,and the AUC was 0.992(0.980,1.000).When compared GP and GC,the overall prediction accuracy was 77.9%,and the AUC was 0.969(0.948,0.990).CONCLUSION The diagnostic effect of multi-parameter joint artificial neural networks analysis is significantly better than the single-index test diagnosis,and it may provide an assistant method for the detection of GC.