Mathew Knowles, the father of Beyonce and Solange Knowles, says he’s got breast cancer.

In an interview with “Good Morning America” that’s set to air on Wednesday, the 67-year-old sat down with Michael Strahan to discuss his diagnosis, his treatment and the implications for his family.

It’s unclear from the preview when Knowles first received his diagnosis.

According to the National Breast Cancer Foundation, breast cancer in men is rare. Only 1 in 1,000 men will ever be diagnosed and less than percent of all breast cancer cases develop in males though it is more common in older men.

//SC//FOXNEWS//