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What is “cord blood”?
The term “cord blood” is used for blood that is
drawn from the umbilical cord and the placenta
after a baby is born. Up until recently this afterbirth was
discarded as medical waste. Cord
blood contains stem cells which may be frozen for later use in
medical therapies, such as stem cell transplantation or
regenerative medicine.
What are cord blood stem
cells?
The umbilical cord and placenta
are rich sources of stem cells. These are different from
both the embryonic stem cells in a fertilized egg or any stem
cells obtained from a child or adult person. The stem cells in
cord blood can grow into blood and immune system cells, as well
as other types of cells.
How is cord blood collected
and banked?
Cord blood collection does not
cause harm or pain to either the mother or the baby. Blood is
drawn from the umbilical cord after the baby is delivered and
the cord is clamped and cut. The
stem cells in cord blood remain viable for a couple of days at
room temperature, providing sufficient time for the blood to be
shipped to a laboratory in another city or state. At the
laboratory the cells are processed and cryogenically frozen.
Once frozen, stem cells remain viable for decades.
How are cord blood stem
cells used today?
Today a growing percentage of
stem cell transplant patients are receiving cord blood to cure
over 70 diseases. Seventy percent of patients who need a
transplant of blood-forming stem cells do not have a matching
donor in their own family, and their physician must search
public registries of donors. The NationalMarrowDonor
Program (www.marrow.org) is
dedicated to matching US patients with donors of either bone
marrow or cord blood from anywhere
in the world. There is a shortage of bone marrow donors
who match minority patients. Cord blood donations are very
helpful to patients of minority or mixed heritage, because cord
blood cells do not have to be matched as closely to the patient
as cells from an adult bone marrow donor.
How may cord blood stem
cells be used in the future?
Medical research is developing
new therapies where stem cells help the body to repair itself,
called regenerative medicine. So far, these therapies require
the patient’s own stem cells, not those from a donor. Children
who have their own cord blood in storage may have more medical
options later in life. Currently clinical trials for Cerebral
Palsy and Type 1 Diabetes are being conducted using a child’s
own cord blood.
Suppose someone in my family has a
disease which can be treated with cord blood?
If there is a chance that your
baby’s cord blood might be needed to treat a family member, then
you may be eligible to receive free cord blood storage in a bank
which offers a related donor program. Check our website
for lists of these charitable programs. In order to qualify you
will need to have the patient’s doctor fill out an application.
What choices do I have for
the storage of my child’s cord blood?
You always have the choice to do
nothing and let the cord blood be discarded after birth.
The choice to save the blood for the family is usually open to
any family that can afford the cost. The choice to donate
to a public bank is only available to mothers who meet the
eligibility criteria. Whatever choices you have and
whatever decision you make, remember
there is no single correct answer for all families. Only
you know which choice feels right for you and your family.
Can my child use his/her
own cord blood?
Most of the diseases for which
children receive stem cell transplants, including most cancers
and all genetic diseases, require that the cells come from
another person, not the patient.
Transplants among adults are split pretty evenly between
transplants with the patient’s own cells and transplants from a
matching donor. At present, the odds that a person will
have any type of transplant of blood-forming stem cells before
age 20 are about 1 in 1700, whereas by age 70 the odds are 1 in
200. In the future, if cord blood is routinely used for
regenerative medicine, then the odds of personal use could
increase greatly.
What types of banks store
cord blood?
There are two types of cord blood
banks:
1. Public banks
2. Family banks
Public banks store donated
cord blood for potential use by transplant patients. The
blood is
listed in a registry by its tissue type, and the donor remains
anonymous. Over half the donations received by public banks are
too small to qualify for long-term storage and are used for
research or discarded. If you give your child’s cord blood to a
public bank, your donation may save a life, but you have no
guarantee that you can retrieve the blood for use by your family
later.
Family banks store cord
blood with a link to the identity of the donor, so that the
family may retrieve it later if it is needed. The parents
have custody of the cord blood until the child is an adult.
The cord blood might someday be needed by the donor baby, or it
could be used by a relative who is a close enough match to
receive a transplant from the donor (typically a sibling).
What are the costs of
banking cord blood?
Public banks do not charge
parents for donating cord blood. Some public banks receive
support from government grants, and they charge on average
$28,000 when a cord blood collection is released for a
transplant. The costs of the transplant are charged to the
patient’s health insurance.
Family banks charge
parents between $1000 and $2000 to process and store cord blood
privately. There is also an annual storage fee of about $125.
Who is eligible to donate
cord blood to a public bank?
In order to donate to a public
cord blood bank, the mother must
1. Contact a public bank
which either accepts donations at the hospital where she
will deliver or accepts mail-in donations (see the list on
our website),
2. Register before the third
trimester of pregnancy, and
3. Pass a health history
screening.
Who is eligible to preserve
cord blood in a family bank?
Except in cases of rare medical
complications, most mothers are eligible for family (also known
as private) cord blood banking. No matter where you live or
where you will deliver the baby, you can obtain a collection kit
to take with you to the hospital which includes instructions on
how to ship the blood to the lab. If you do wish to bank
privately, be sure to discuss your decision with your delivery
team and check if there are any special requirements
at the hospital where you plan to deliver.
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