Another cohort of treatment-naïve patients affected with various solid cancers (including cholangiocarcinoma, ovarian cancer, and renal cell carcinoma) provided substantial correlation of tumor-derived specimens (defined as CXCR4-based immunoreactive scores) and [68 Ga]PentixaFor accumulation in sites of disease [8]. Here, CXCR4 is linked to cholangiocarcinoma.