Therefore, this paper proposed the quantification of maspin using stochastic microsensors [14,15], able to perform both the identification and reliable quantification of maspin in different biological samples (tumor tissue, whole blood, urine, saliva) from patients confirmed with gastric cancer, and the correlations of the values of concentrations with different pathological features extracted from the database of the GRAPHSENSGASTROINTES project. This evidence concerns the gene SERPINB5 and gastric cancer.