In July, a source explained: "Kanye's dad was diagnosed with cancer and is already receiving treatment.
"He seems to be responding well to the treatment and everyone is hopeful he will be okay."
Although Kanye didn't want to talk about his dad's health worries at the time, he appreciated Kim's supportive influence.
The insider added: "Kanye doesn't really talk about it. You can tell it's something that's very difficult for him.
"When his mom suddenly passed away, Kanye was all alone. Having Kim and the kids around helps in difficult situations."
Kanye previously suggested he blames himself for his mother's death.
Asked what he has sacrificed for his career success, he said: "My mom."
The rap star claimed Donda - who underwent surgery at a Los Angeles-area hospital - would still have been alive if he hadn't decided to relocate.
He explained: "If I had never moved to L.A. she'd be alive. I don't want to go far into it because it will bring me to tears."