I am sorry to hear that your husband has GBM. My husband was diagnosed April 1, 2022 with it and passed away July 17, 2022. It was difficult watching him decline. GBM is a tough cancer to deal with. I keep reading that some improvements are being made in the way they treat it but it still is a very aggressive cancer and I am sure you know the outlook isn’t good. I actually grew up in the Austin area. I live in Chicago now. I wanted to take my husband to MD Anderson in Houston to see what they might have been able to do but he was in no shape to travel. He had been having some symptoms for a few months before he was diagnosed. When they finally diagnosed it, it was pretty bad. He actually had two tumors and he had a craniotomy but the doctor didn’t remove any of the tumors because he said they would just grow back and probably more quickly. So we only radiation and chemo for treatment. I personally think the radiation killed him quicker. He went downhill so fast after the radiation was started. Plus he didn’t have the better receptors for the chemo so the chemo did little I think. Sorry to be such a downer but you wanted to know other’s experiences. Ours was not good but some do have better experiences from what I have read. One thing I will say….dont argue or get upset with him about anything now. He is going through a lot. Just be there for him and comfort him as much as possible and be supportive. I wish you the best.