McClung, 27, died of smoke inhalation while trying to evacuate the building located on West 43rd Street, after a fire broke out just after 11 AM on the 20th floor, according to the New York Times.
McClung and his husband, Michael Todd Cohen, who were married this past summer, lived on the 38th floor and were both found in the smoke-filled stairwells of the luxury high rise. Cohen is in serious but stable condition at Roosevelt Hospital.
Drama Desk Award nominee Josh Hecht, who directed several of McClung's plays, described the late playwright as a "sensitive, funny and poignant writer."
McClung's Paper Nautilus was staged by Hecht for AliveWire Theatrics. His plays were also developed at Rattlestick and PS 122.
A fund has been set up to help offset costs for the families of McClung and Cohen in the wake of the tragedy. Click here to donate.