Is the cast from poltergeist dead?

As of October 2023, several cast members from the original "Poltergeist" film (1982) have passed away, including Heather O'Rourke, who played Carol Anne, and Dominique Dunne, who portrayed her older sister Dana. The film has been associated with a so-called "Poltergeist curse," as multiple cast members died under tragic circumstances. However, not all cast members are deceased; for example, Craig T. Nelson and JoBeth Williams, who played the parents, are still alive.