Seven-year-old Zach Guillot, who is a first grader at Parish Episcopal School, appeared to have beaten Acute Myeloid Leukemia after receiving a bone marrow transplant from his three-year-old brother and going through intense rounds of chemotherapy in June 2010.

But in November of this year, his family found out that the cancer is back, and Guillot now needs a bone marrow donation from a stranger, so he can battle the illness.

Parish Episcopal School is hosting a bone marrow donor drive to help find a match for Guillot from noon to 6 p.m. Dec. 11 at the school's Midway Campus, which is located at 4101 Sigma Rd.

It only takes a cheek swab to find out if you are a match. Donors must be 18 to 55 years old, weigh at least 110 pounds and be in good health.

According to a news release, patients seeking bone marrow often have difficulties finding a donor because both must have at least eight out of 4,000 known tissue characteristics in common.

Guillot's battle with leukemia started in February 2010 after his mother noticed some unusual bruising on his shins. A blood test revealed that he had Acute Myeloid Leukemia.

Now, after finding out about his relapse, Guillot's family is prepared for another fight.

"After a horrible initial shock, we are now game on!" said Julie Guillot, who is Zach's mother.