The Heirs actor Kim Woo Bin, 27, has been diagnosed with nasopharyngeal cancer.
According to WebMD, nasopharyngeal cancer is a "rare type of head and neck cancer" which has only been detected to "fewer than one in every 100,000 people in North America."
Sidus HQ, Woo Bin's talent agency confirmed the reports and sent an official statement to SE Daily about the Korean actor's condition.
The talent agency said Woo Bin just recently discovered his illness and is now going under medical treatment.
Part of the statement reads, as translated in English: "While he was busy doing working on his schedule, Mr. Kim recently visited a hospital after noticing an abnormal symptom on his body, and he was later diagnosed for having nasopharyngeal cancer.
"Luckily, the treatment is not too late so we are now starting his medication and radiation therapy. We are looking forward to seeing him in good health again, so please pray for a quick recovery."
Meanwhile, Allkpop.com reports that Woo Bin's longtime girlfriend Shin Min Ah is the first to know of the actor's condition.
Min Ah's talent agency said that "she's helping her significant other, Kim Woo Bin, with his treatment."
Woo Bin is known for his portrayal as a Choi Young Do in The Heirs, which also starred Lee Min Ho and Park Shin Hye.
The series aired in the Philippines back in 2014 through ABS-CBN.
In 2016, he was paired with Miss A member Bae Suzy for the drama series Uncontrollably Fond.
Nasopharyngeal cancer was the cause of death of the first husband of Filipino actress-TV host Camille Prats, Anthony Linsangan.
Anthony died in 2011 at the age of 31.