In a subsequent study, the same group correlated FAP-specific signaling with apparent diffusion coefficient (ADC) and relative cerebral blood volume (rCBV) signals on MRI to further characterize the significance of FAPI tracer uptake ([68Ga]Ga-FAPI-02 or [68Ga]Ga-FAPI-04) in 13 patients with IDH-wildtype glioblastomas. The gene discussed is FAP; the disease is glioblastoma.