The 41-year-old and his wife, Luisana Lopilato, first announced that their son had been diagnosed with the disease back in November 2016.
“We are devastated about the recent cancer diagnosis of our oldest son Noah who is currently undergoing treatment in the U.S,” the couple wrote in a statement.
“We have always been very vocal about the importance of family and the love we have for our children."
The Feeling Good singer - who is currently taking a break from the spotlight to care for Noah - updated fans on the little boy’s condition in a statement to Us Weekly in February.
"We are so grateful to report that our son Noah has been progressing well during his treatment and the doctors are very optimistic,” he wrote.
“He has been brave throughout and we continue to be inspired by his courage.”
“We thank God for the strength he has given all of us.”
This article originally appeared on New Idea.