Comedian Alex Duong was staying positive before he tragically passed away at the age of 42. The personality, who was known for his stand-up comedy and appearances on the TV show Blue Bloods, among other small roles, died following his battle with alveolar rhabdomyosarcoma, an aggressive soft tissue cancer. Back in January, Instagram account @littlesaigon.official shared an update on Duong's health and asked for help from followers. "Alex Duong's battle with cancer has taken a new turn, and he needs our help navigating this unknown.