The tour is expected to resume in the fall. It's not clear when the Broadway run might transpire. Previously purchased tickets will be honored once the new dates are scheduled or ticketholders can contact their place of purchase for refunds, according to robinwilliams.com.
"I'm so touched by everyone's support and well wishes," Williams said in a March 5 statement. "This tour has been amazing fun and I can't wait to get back out on the road after a little tune-up."
Williams has been on the 80-city Weapons of Self-Destruction comedy tour since September 2008.
Weapons was to have arrived on Broadway at the Neil Simon Theatre April 23, presented on Broadway by James L. Nederlander and Ron Delsener.
Weapons of Self-Destruction, according to press notes, "highlights Williams’ trademark free associations and riffs on social and political absurdities." In recent days Williams postponed four March tour dates owing to illness and hospitalization.
Williams, according to his official website, "was experiencing shortness of breath." He was evaluated by doctors, who recommended a week of rest, but the diagnosis was later revealed to be more serious.
The actor-writer-comedian, who became known during his work in "Mork & Mindy" — a spinoff created from a guest spot on "Happy Days" — is widely hailed for his madcap improvisational humor in movies such as "Good Morning, Vietnam," "Aladdin," "The Birdcage," "Mrs. Doubtfire" and "Death to Smoochy," among others. Williams has often taken on dramatic roles as well in such films as "The Fisher King," "Awakenings," "Insomnia" and his Academy Award-winning turn in "Good Will Hunting."
On stage the actor may be remembered for his performance as Estragon opposite Steve Martin's Vladimir in the Mike Nichols-directed production of Samuel Beckett's Waiting for Godot.
Williams was seen on Broadway in Robin Williams: Live on Broadway (July 11-14, 2002) and V.I.P. Night on Broadway (April 22, 1979).
The Neil Simon Theatre is located in Manhattan at 250 West 52nd Street. Tickets were handled by ticketmaster.com or robinwilliams.com.