Based on this categorization expression of PrlR was not detected in the tissues of 34% (11 out of 32) of GBM patients, but it was detected at high-grade in 50% of GBM tumors (16 out of 32) and at moderated levels only in 16% (5 out of 32) of the tumors (Figure 2F). The gene discussed is PRLR; the disease is glioblastoma.