ESR1 and uterine carcinosarcoma: In contrast, low expression levels of ESR1 mRNA were found in bladder urothelial carcinoma (BLCA), cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC), liver hepatocellular carcinoma (LIHC), testicular germ cell tumors (TGCT), and uterine carcinosarcoma (UCS) samples.