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Though uses of cord blood beyond blood and immunological disorders is speculative, some research has been done in other areas. Any such potential beyond blood and immunological uses is limited by the fact that cord cells are hematopoietic stem cells (which can differentiate only into blood cells), and not pluripotent stem cells (such as embryonic stem cells, which can differentiate into any type of tissue). Cord blood has been studied as a treatment for diabetes. However, apart from blood disorders, the use of cord blood for other diseases is not in routine clinical use and remains a major challenge for the stem cell community.
Some parents-to-be are sold on the advertising that banking their child’s cord blood could potentially treat an array of diseases the child, or his siblings, could encounter in their lives. Other parents-to-be may find all the promises too good to be true.
CBR was the first family bank accredited by AABB (formerly the American Association of Blood Banks) and the company’s quality standards have been recognized through ISO 9001:2008 certification—the global business standard for quality. The Federal Drug Administration (FDA) has issued cord blood regulations, and the states of California, Illinois, Maryland, New York and New Jersey have mandatory licensing for cord blood banking. The stringent laboratory processes, record keeping, quality control and quality assurance of CBR are designed to meet all federal and state guidelines and regulations.
As noted, there are different ways to process cord blood, and although the type of processing method doesn’t always enter the conversation on cord blood banking, it is a big part of the purity of any cord blood collection. Red blood cells can have a negative impact on a cord blood transfusion. In addition, there is a certain number of stem cells that need to be present in order for the cord blood to be effective in disease treatment. Each processing method has the ability to better reduce the number of RBCs and capture more stem cells. Some processing methods like AutoXpress and Sepax are automated to ensure a level of consistency across all collections. HES is preferred by some banks because it was the original processing method used by most banks and it has a proven track record. You can read more about the different cord blood processing methods here.
Lead image of baby’s umbilical cord from Wikimedia Commons. Possible human blood stem cell image by Rajeev Gupta and George Chennell. Remaining images of blood sample bags and red blood cells from Wellcome Images.
A cord blood bank may be private (i.e. the blood is stored for and the costs paid by donor families) or public (i.e. stored and made available for use by unrelated donors). While public cord blood banking is widely supported, private cord banking is controversial in both the medical and parenting community. Although umbilical cord blood is well-recognized to be useful for treating hematopoietic and genetic disorders, some controversy surrounds the collection and storage of umbilical cord blood by private banks for the baby’s use. Only a small percentage of babies (estimated at between 1 in 1,000 to 1 in 200,000) ever use the umbilical cord blood that is stored. The American Academy of Pediatrics 2007 Policy Statement on Cord Blood Banking stated: “Physicians should be aware of the unsubstantiated claims of private cord blood banks made to future parents that promise to insure infants or family members against serious illnesses in the future by use of the stem cells contained in cord blood.” and “private storage of cord blood as ‘biological insurance’ is unwise” unless there is a family member with a current or potential need to undergo a stem cell transplantation. The American Academy of Pediatrics also notes that the odds of using a person’s own cord blood is 1 in 200,000 while the Institute of Medicine says that only 14 such procedures have ever been performed.
If clients need to use the cord blood stem cells stored with CBR for transplantation and the cells fail to engraft, clients receive a full refund of all fees paid to CBR for cord blood services plus an additional $50,000.
A limitation of cord blood is that it contains fewer HSCs than a bone marrow donation does, meaning adult patients often require two volumes of cord blood for treatments. Researchers are studying ways to expand the number of HSCs from cord blood in labs so that a single cord blood donation could supply enough cells for one or more HSC transplants.
Checked to make sure it has enough blood-forming cells for a transplant. (If there are too few cells, the cord blood unit may be used for research to improve the transplant process for future patients or to investigate new therapies using cord blood, or discarded.)
Collected cord blood is cryopreserved and then stored in a cord blood bank for future transplantation. Cord blood collection is typically depleted of red blood cells before cryopreservation to ensure high rates of stem cell recovery.
After entering the bloodstream, the stem cells travel to the bone marrow, where they begin to produce new white blood cells, red blood cells, and platelets in a process known as “engraftment.” Engraftment usually occurs within about 2 to 4 weeks after transplantation. Doctors monitor it by checking blood counts on a frequent basis. Complete recovery of immune function takes much longer, however—up to several months for autologous transplant recipients and 1 to 2 years for patients receiving allogeneic or syngeneic transplants. Doctors evaluate the results of various blood tests to confirm that new blood cells are being produced and that the cancer has not returned. Bone marrow aspiration (the removal of a small sample of bone marrow through a needle for examination under a microscope) can also help doctors determine how well the new marrow is working.
Current research aims to answer these questions in order to establish whether safe and effective treatments for non-blood diseases could be developed in the future using cord blood. An early clinical trial investigating cord blood treatment of childhood type 1 diabetes was unsuccessful. Other very early stage clinical trials are now exploring the use of cord blood transplants to treat children with brain disorders such as cerebral palsy or traumatic brain injury. However, such trials have not yet shown any positive effects and most scientists believe much more laboratory research is needed to understand how cord blood cells behave and whether they may be useful in these kinds of treatments
Both public and family cord blood banks must register with the US Food and Drug Administration (FDA), and since Oct. 2011 public banks also need to apply for an FDA license. All cord blood banks are required by federal law to test the blood of the mother for infectious diseases. At public banks the screening is usually more extensive, similar to the tests performed when you donate blood. The typical expense to a public bank is $150 per unit.
Umbilical cord blood is the blood left over in the placenta and in the umbilical cord after the birth of the baby. The cord blood is composed of all the elements found in whole blood. It contains red blood cells, white blood cells, plasma, platelets and is also rich in hematopoietic stem cells. There are several methods for collecting cord blood. The method most commonly used in clinical practice is the “closed technique”, which is similar to standard blood collection techniques. With this method, the technician cannulates the vein of the severed umbilical cord using a needle that is connected to a blood bag, and cord blood flows through the needle into the bag. On average, the closed technique enables collection of about 75 ml of cord blood.
The second question concerns “storing” the newborn’s cord blood for the child’s future use or a family member’s future use. The American Academy of Pediatrics has issued a policy statement saying that, “Cord blood donation should be discouraged when cord blood stored in a bank is to be directed for later personal or family use.” They state: “No accurate estimates exist of the likelihood of children to need their own stored cord blood stem cells in the future. The range of available estimates is from 1 in 1000 to more than 1 in 200000.51 The potential for children needing their own cord blood stem cells for future autologous use is controversial presently.” Read the complete statement here.
The proteins stem from three HLA genes, and you inherit one HLA from each parent, or half your HLA markers from your mother and half from your father. This gives siblings a 25 percent chance of being a perfect match, a 50 percent chance of being a partial match and another one-in-four chance of not being a match at all. Unfortunately, about seven out 10 patients who need a transplant don’t have a suitable donor in their family. They can either rely on their own stem cells, isolated before treatment or previously preserved, or try to find a match through a public donor.
The American Congress of Obstetricians and Gynecologists and the American Academy of Pediatrics don’t recommend routine cord blood storage. The groups say private banks should only be used when there’s a sibling with a medical condition who could benefit from the stem cells. Families are encouraged to donate stem cells to a public bank to help others.
Cord blood is collected by your obstetrician or the staff at the hospital where you give birth. Not all hospitals offer this service. Some charge a separate fee that may or may not be covered by insurance.
The American Pediatric Association in 2008 recommended that physicians recommend that cord blood be donated instead of saved privately for family families. One of the major proponents for this was Joanne Kurtzberg, who profited from this by getting funding for her public cord blood bank at Duke University. She has since started her own private cord blood bank after doing more research on Cerebral Palsy. Interesting.
Lack of awareness is the #1 reason why cord blood is most often thrown away. For most pregnant mothers, their doctor does not even mention the topic. If a parent wants to save cord blood, they must be pro-active.
In addition, CBR offers Genetic Counselors on staff to help families make informed decisions about newborn stem cell banking. Phone 1-888-CORDBLOOD1-888-CORDBLOOD to speak with a CBR Genetic Counselor.
The National Marrow Donor Program® (NMDP), a nonprofit organization, manages the world’s largest registry of more than 11 million potential donors and cord blood units. The NMDP operates Be The Match®, which helps connect patients with matching donors.
The stem cells used in BMT come from the liquid center of the bone, called the marrow. In general, the procedure for obtaining bone marrow, which is called “harvesting,” is similar for all three types of BMTs (autologous, syngeneic, and allogeneic). The donor is given either general anesthesia, which puts the person to sleep during the procedure, or regional anesthesia, which causes loss of feeling below the waist. Needles are inserted through the skin over the pelvic (hip) bone or, in rare cases, the sternum (breastbone), and into the bone marrow to draw the marrow out of the bone. Harvesting the marrow takes about an hour.
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Most of the diseases on the proven treatment list are inherited genetic diseases. Typically, a child with a genetic disease would require cord blood unit from a sibling or an unrelated donor. Having a sibling cord blood unit can be a great advantage as research shows that treatments using cord blood from a family member are about twice as successful as treatments using cord blood from a non-relative.9a, 17