A physician might be your best tool. In cancer, there are a staggering number of clinical trials (which are typically the mechanism to get the latest therapies

A physician might be your best tool. In cancer, there are a staggering number of clinical trials (which are typically the mechanism to get the latest therapies before approval). In most cases, the standard of care is supplemented with the novel therapy. If your family member is interested and willing to travel, it would be reasonable for them to ask for a second opinion at one of the major cancer centers and/or to ask if there is a trial in which they might participate. If your family member wants to stay local, then I'd still ask their oncologist if there is a GBM specialist in the area whom your family member can meet.