MerTK is highly expressed in several types of cancer, such as non–small-cell lung cancer (NSCLC) [7], breast cancer [8,9], colorectal cancer [10,11], glioblastoma multiforme (GBM) [12,13], melanoma [14], acute myeloid leukemia (AML) [15], and schwannoma [16]. The gene discussed is MERTK; the disease is glioblastoma.