GPER1 and cholangiocarcinoma: To the best of our knowledge, no GPER expression data are available for glioblastomas, medullary and anaplastic thyroid carcinomas, parathyroid adenomas, gastrointestinal stromal tumours, cholangiocellular carcinomas, BP-NENs or GEP-NENs (apart from SCLC), renal cancer, pheochromocytomas, lymphomas, melanomas, or sarcomas.