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After reading
the informational material and upon signing the consent, a blood
sample is drawn for HLA typing. The HLA type is reported as a
series of numbers such as: A1 A11 B18 B35. HLA stands for “Human
Leukocyte Antigen:” and is determined by tissue typing the white
blood cells.
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The test
results are recorded in the Registry computer files and compared
to patients’ HLA types. If your HLA type matches a patient’s HLA
type, you will be contacted by letter or telephone and asked to
have a second blood test to determine your DNA type. Upon receipt
of a second signed consent, blood is drawn or your frozen sample
is tested. Again, this is reported as a series of numbers such as:
DRB1*1101 DRB*1402. THERE IS NO FEE! This step and all subsequent
steps are the financial responsibility of the patient.
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If you continue
to match, a third blood test is drawn after obtaining your
consent. Your blood and the patient’s are retested to confirm the
reported types. Further DNA studies of your cells are done to
determine true compatibility.
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If step three
shows compatibility, the potential donor is notified and scheduled
for counseling by a marrow transplant team. The potential donor is
asked to bring a family member or support person along. The entire
marrow harvest procedure is explained in detail, and risks and/or
complications that could occur are discussed at that time.
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After the
consultation with the collection (or harvest) team the potential
donor is asked to consider his/her final consent. After consenting
to the procedure, he/she is given a complete physical examination
to insure and protect the health of the donor as well as the
patient.
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The donor
usually enters the hospital the morning of the procedure. The
marrow collection is done under light anesthesia. A specially
designed needle is inserted into the marrow cavity of the crest of
each hip bone one to two times, depending upon the size of the
recipient, to withdraw marrow mixed with blood. Only 2% to 3% of a
donor’s marrow is collected. (Marrow is a fluid and looks like
blood.) The donor may go home the same day or the following
morning. The most common side effect is soreness in the lower back
area for a few days.
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Marrow (which
is liquid) is given to the patient by IV. If the transplant is
successful, the new marrow begins to produce normal healthy blood
cells within two to three weeks.
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The body
replaces the donor’s marrow within three to four weeks.
Direct contact
between the donor and the recipient is deferred for one year and
must be mutually desired by both. Timing may be determined by the
protocol of the patient’s transplant center and/or Federal
regulations.
AHEPA Bone Marrow Donor Registry
Donor Activity Center
12
Lexington Drive
Livingston, NJ 07039
866-243-7237
Fax: 973-992-6080
Email:
Ahepabmdr@comcast.net
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