The news was given on Twitter by the Canadian federation, Skate Canada, and on Facebook by the International Figure Skating.
Her mother is in critical condition and Mao Asada has flown back to Japan to be with her. Her coach, Nobuo Sato, went back in Japan with her. A member of the Japanese Skating Federation said that although the skater's mother had been ill prior to Asada's departure from Japan, the situation has since grown worse, prompting Asada's withdrawal.
Cinquanta said it will not be any substitute.
Our thoughts are with Mao and her family.