Ryker Jay Lutz In Loving Memory of Ryker Jay Lutz. Ryker was diagnosed with Anaplastic Astrocytoma Grade 3. Astrocytoma is a cancer of the brain, it arises from "astrocytes", a type of cell. Astrocytomas can be benign but in this case, it was malign. Grade 3 means it grows at a fast pace and it … Continue reading Ryker Jay Lutz, the blue eyed Angel