Chuck Potthast died from glioblastoma after 5 years cancer-free: What to know about the brain cancer’s aggressive nature

Chuck Potthast, father of 90 Day Fiancé's Elizabeth "Libby" Castravet, has died at 64 after a battle with glioblastoma. Libby announced the devastating news on Instagram, stating the family is "completely shattered." Potthast had previously shared his cancer-free status following surgery in 2017, but later underwent an extended procedure due to complications.