APOC1 and ovarian serous cystadenocarcinoma: As shown in Figures 1A, B, the expression of APOC1 was significantly upregulated in tumor tissue compared with normal tissue in Breast invasive carcinoma (BRCA), Cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC), Colon adenocarcinoma (COAD), ESCA, Kidney Chromophobe (KICH), Kidney renal clear cell carcinoma (KIRC), Kidney renal papillary cell carcinoma (KIRP), and Ovarian serous cystadenocarcinoma (OV).