The average percentage of ROR1-expressing cells varied between histologic types, demonstrating higher expression in mesothelioma (average 68% expression) and liposarcoma (average 57% expression) to lower average expression levels (14–5%) in GIST, endometroid carcinoma, cholangiocarcinoma, and leiomyosarcoma. This evidence concerns the gene ROR1 and cholangiocarcinoma.