CCT networks are present in 290 subtypes of cancers and in 34 types of cancerous human tissue (Fig. 3 and SI Appendix, Figs. S5, S12 and S13 and Datasets S2 and S3), suggesting that CCTs effectively cross all kinds of human tissues and organs for cytocapsular tumor metastasis. The gene discussed is FLVCR2; the disease is neoplasm.