The boy, Poon Sing-yu, has been queuing for liver transplant since June 30 last year and ranks first on the list. But he has yet to find a suitable donor with blood type O.

He suffers from congenital biliary atresia. Although he had undergone a surgery when he was only 54-day-old, his liver function is weaker compared to other kids.

Poon developed high fever three months ago and he was admitted to Queen Mary Hospital on July 20 due to ascites – too much fluid accumulated in his abdomen.

He stayed for around a week before going home. As he visited the doctor again on August 7, the doctor found that the his bilirubin level reached up to 300, marking a 20-fold increase compared with normal people.

Poon's mother pointed out that a liver transplant will be needed immediately when the bilirubin level reaches 400. Poon has to be hospitalized again starting next Monday.

His mother said the white of Poon's eyes is turning yellowish.

As a type O liver is rare and not every liver is suitable for kids, Poon's mother called upon the public to donate a Type O liver from deceased family member or an ordinary liver from a living donor.

Citizens who wish to offer help can contact Queen Mary Hospital.