The ‘Halo’ hitmaker’s dad Mathew Knowles

has revealed he is battling the disease on the first day of Breast Cancer

Awareness month, which runs throughout October, as part of his interview with

Michael Strahan on ‘Good Morning America’.

Speaking in the sit-down chat, which will

air on Wednesday, October 2, Michael asked Mathew how he broke the news to his

daughters Beyonce and Solange.

He said in the teaser: “How was it to

tell your family about the diagnosis?”

Breast cancer in men is extremely rare,

with only one in a thousand being diagnosed with the illness but can often be

much deadlier unless it’s caught early.

The 67-year-old talent manager recently

said, despite people claiming he has a fraught relationship with his daughters,

he gets on “great” with the girls.

He said: “I have a great relationship

as a father with not just Beyoncé, but people forget I have this talented,

gifted kid named Solange, who is a Grammy winner and has had a number one

album. People tend to think she does not exist.”

“It’s not a daily dialogue. Daughters

tend to always gravitate to their moms more than their dads. I think it’s

pretty standard in the universe, my relationship,” he noted.

However, Mathew used to find it difficult

to switch from being a manager to being a father but, nonetheless, he wouldn’t

change anything about his “mistakes.”

He explained: “The most challenging

thing was separating and walking the line from manager to father. That’s very

difficult in the music industry.

“If I had to do it all over again, I

would change nothing because I believe failure is an opportunity to grow, not a

reason to quit. Most people when they make mistakes, they want to quit rather

than learn from it,” Knowles said.