While thyroid tumors showed consistently high BAG3 expression in all subtypes (papillary 96%, follicular 93%, and anaplastic 100%), expression in brain tumors varied by grade, with grade I glial tumors showing 77%, while grade II and III astrocytomas and glioblastoma multiforme all showed values above 89%. The gene discussed is BAG3; the disease is astrocytoma (excluding glioblastoma).