Russell Brand has canceled several upcoming Messiah Complex shows to be by his mother Barbara's side.
"Sorry to eff you around with gigs," the English comedian tweeted, along with a link to one announcement. "My mum ain't well. Tix will be honoured or refunded."
The 38-year-old revealed on YouTube earlier this week that Barbara has breast cancer, her second battle with the disease.
"Russell Brand has taken the difficult decision to postpone tonight's show at Warwick Arts Centre, Coventry due to personal reasons," the Warwick Arts Centre venue said in a statement on Thursday. The show will be rescheduled by April 19.
He was also scheduled to perform at the Derby Assembly Rooms on Friday night and the show is now slated for April 14.
There is no word whether or not Brand will continue with his weekend shows, scheduled in Plymouth and London.
Per The Mirror, Barbara battled uterine cancer when her son was only eight years old and breast cancer one year later.
Brand wrote about his mother's first diagnosis in a tribute to English reality star Jade Goody, who lost her battle to cancer in 2009.
"When my Mum first got cancer I must've been around the age Jade's eldest son is now," Brand said. "Too young, in fact, to properly comprehend what was happening, only old enough to sense the tingling presence of fear, the averted looks, the stifled, thin lipped sympathy and muddled, neighbourly compassion."
Our thoughts are with Russell and Barbara during this difficult time.