Further in-depth studies of mixed-type gastric cancer in the context of its morphological histological tumor components, as well as tumorigenesis mechanisms, are warranted as they may aid in the early diagnosis of tumors and more accurate prediction of outcome and selection of appropriate management strategies, i.e., determination of the extent of surgical manipulation and further medical treatment, taking into account the molecular characteristics of the tumor and its PD-L1 status, will significantly affect the 5-year survival rate of the patient in the long run [6]. The gene discussed is CD274; the disease is neoplasm.