I had a brother diagnose with Glioblastoma grade 4. In our family he is the only 1 who had this disease. He now on radiation, chemo theraphy and also evastin and it seem like nothing help much. In our family no one had this disease. The only thing i could think of is he had been working for a company for 7 years that expose to laser radiation everyday. I don't know if with that enviroment could lead to this deadly disease or not. I also work for this company and my family suggest me to quit this job. I'm now feel very bad and for my brother and also very confuse myseft. Anyone had any idea to share??