A Queensland mother is searching for answers after her terminally ill son’s critical bone marrow transplant was left behind on the tarmac at a US airport.

Mateoh Eggleton, who suffers from chronic granulomatous disease, has been waiting more than three years for the marrow, which is a rare match for the 6-year-old.

His mother, Shalyn, told Sofie Formica officials are giving no explanation for the mistake.

“How this has happened, no one knows, because technically, these cells should be with someone 24-7,” she said.

“There’s laws in place, there’s protocols, there’s requirements, procedures.”

The family are now waiting for the marrow to arrive in Australia on March 4 to establish whether it can still be used.

“The cells are in transit, on the way. Nobody will know the condition until they actually reach Australia and the cells are tested with all the scientists.

“We actually don’t know how long they were sitting at the airport for.”

Doctors have trialled nine treatments for Mateoh in the last 18 months, including plasma and adult chemotherapy drugs.

Ms Eggleton was told the bone marrow transplant is her son’s last option.

“This is what we need to save my boy. If this does not work, he won’t be here.”

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