The 3-year-old son of “Haven’t Met You Yet” singer Michael Bublé and actress Luisana Lopilato has liver cancer, Argentinian magazine Gente reported Wednesday. Doctors discovered the devastating diagnosis Nov. 1 after a liver biopsy was performed. It was originally assumed Noah had leukemia, though those rumors were ultimately dispelled.

He is going to undergo four months of chemotherapy, Gente wrote. “Cancer is a horrible illness but we have faith in Noah being able to overcome this,” Lopilato’s sister, Daniela, told the magazine Tuesday. “If God wanted it to be discovered that way, it's because he wants to save Noah.”

The family is confident Noah will overcome his illness. “We know he will. The time to start a long and very difficult treatment has come but it's got to be done,” Daniela said. “They say children are normally strong to put up with chemotherapy and my nephew is a warrior.”

When Bublé made the announcement Friday, he said he would cancel his work engagements to be with his family. He is sticking true to that promise.

The singer officially canned his performance at the BBC Music Awards Dec. 12, People Magazine reported Tuesday. The announcement was made by DJ Steve Wright on BBC Radio 2 show.

In his place, Lukas Graham, Emeli Sandé and the Kaiser Chiefs are slated to perform at London’s ExCel auditorium.

Bublé, 41, talked about Noah’s health of his wife’s Facebook page Friday. “We are devastated about the recent cancer diagnosis of our oldest son Noah who is currently undergoing treatment in the U.S.,” he wrote. “Luisana and I have put our careers on hold in order to devote all our time and attention to helping Noah get well.” Lopiato has not issued as individual statement.

The couple also shares 10-month-old son, Elias.

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