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As cord blood is inter-related to cord blood banking, it is often a catch-all term used for the various cells that are stored. It may be surprising for some parents to learn that stored cord blood contains little of what people think of as “blood,” as the red blood cells (RBCs) can actually be detrimental to a cord blood treatment. (As we’ll discuss later, one of the chief goals of cord blood processing is to greatly reduce the volume of red blood cells in any cord blood collection.)
You and your baby’s personal information are always kept private by the public cord blood bank. The cord blood unit is given a number at the hospital, and this is how it is listed on the registry and at the public cord blood bank.
With allogeneic transplants, GVHD sometimes develops when white blood cells from the donor (the graft) identify cells in the patient’s body (the host) as foreign and attack them. The most commonly damaged organs are the skin, liver, and intestines. This complication can develop within a few weeks of the transplant (acute GVHD) or much later (chronic GVHD). To prevent this complication, the patient may receive medications that suppress the immune system. Additionally, the donated stem cells can be treated to remove the white blood cells that cause GVHD in a process called “T-cell depletion.” If GVHD develops, it can be very serious and is treated with steroids or other immunosuppressive agents. GVHD can be difficult to treat, but some studies suggest that patients with leukemia who develop GVHD are less likely to have the cancer come back. Clinical trials are being conducted to find ways to prevent and treat GVHD.
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.
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
Frances Verter, PhD, founded the Parent’s Guide to Cord Blood in 1998 and has been a Scientific Advisor to Community Blood Services since 2007. In 2011 the NMDP presented her with their Lifeline Award in recognition of her efforts to improve public education about cord blood donation.
Excitement about cord tissue’s potential to help conditions affecting cartilage, muscle and nerve cells continues to grow.19 Researchers are focusing on a wide range of potential treatment areas, including Parkinson’s disease, Alzheimer’s, liver fibrosis, lung cancer, and sports injuries. Since 2007 there have been 150 clinical trials using cord tissue stem cells.
The choices expectant parents make today go beyond finding out the gender of their baby. They span beyond deciding whether to find out if their child, still in the womb, may potentially have a genetic disorder. Today, many parents must decide whether to store their baby’s umbilical cord blood so it will be available to heal their child if at any point in the child’s lifetime he or she becomes sick.
Stem cells also may be retrieved from umbilical cord blood. For this to occur, the mother must contact a cord blood bank before the baby’s birth. The cord blood bank may request that she complete a questionnaire and give a small blood sample.
Some brochures advertising private cord blood banking show children with cerebral palsy, a neurological disorder, who were treated with their own stem cells. In the case of Cord Blood Registry, the company lists all stem cell transplants conducted at Duke University. In a list of individuals treated in their “stem cell therapy data” cerebral palsy is listed. However, transplants were part of an early research study and studies of efficacy are just now underway.
On average, the transport time for stem cells from the hospital to CBR’s lab is 19 hours. CBR partners with Quick International, a private medical courier service with 30 years of experience in the transportation of blood and tissue for transplant and research.
Banking of stem cells from cord blood began in 1994 with the foundation of the New York Blood Centre Cord Blood Bank. The field of umbilical cord blood storage has matured considerably over the last two decades. We continue to learn more about the long-term effects of cryo-preservation on the cells, which has resulted in increased storage times.
Cord blood contains mesenchymal stem cells but is much more abundant in hematopoietic stem cells. Cord tissue, on the other hand, contains some hematopoietic stem cells but is much richer in mesenchymal stem cells. Cord tissue, or Wharton’s jelly, is the protective layer that covers the umbilical cord’s vein and other vessels. Its MSCs can become a host of cells including those found in the nervous system, sensory organs, circulatory tissues, skin, bone, cartilage, and more. MSCs are currently undergoing clinical trials for sports injuries, heart and kidney disease, ALS, wound healing and autoimmune disease. As with cord blood, cord tissue is easily collected at the type of birth and holds great potential in regenerative medicine. Learn more about cord tissue banking here.
Because of the invasive procedure required to obtain the bone marrow, scientist continued to look for a better source, which eventually lead to the discovery of similar stem cells in cord blood in 1978. Cord blood was used in its first transplant in 1988, and cord blood has since been shown to be more advantageous than other means of acquiring similar stem cells and immune system cells. This is because umbilical cord blood can be considered naïve and immature compared to other sources. Cord blood has not been exposed to disease or environmental pollutants, and it is more accepting of foreign cells. In this case, inexperience makes it stronger.
Why should you consider donating the cord blood to a public bank? Simply because, besides bringing a new life into the world, you could be saving an individual whose best chance at life is a stem cell transplant with your baby’s donated cord blood. This can only happen if you donate and if your baby is a close enough match for a patient in need. If you chose to reserve the cord blood for your family, then siblings who have the same parents have a 25% chance of being an exact match.
In the United States, the Food and Drug Administration regulates any facility that stores cord blood; cord blood intended for use in the person from whom it came is not regulated, but cord blood for use in others is regulated as a drug and as a biologic. Several states also have regulations for cord blood banks.
As the research into umbilical cord blood and it’s therapeutic use for blood diseases has grown, so has the question as to whether people should privately store the cord blood of their offspring for future use. A recent paper on this issue by Mahendra Rao and colleagues advocates the practice of cord blood banking (for treatment of blood diseases) but in the context of public cord blood banks rather than a private cord blood banks. Any adult needing treated would need at least two cord blood samples that are immune compatible. So one sample will not be sufficient. A child might only need one cord blood sample but in the case of childhood leukaemia there is a risk that pre-leukemic cells are present in cord blood sample – and so the child could not use their own cells for therapy.
The evolution of stem cell therapies has paved the way for further research being conducted through FDA-regulated clinical trials to uncover their potential in regenerative medicine applications. Cord Blood Registry is the first family newborn stem cell company to partner with leading research institutions to establish FDA-regulated clinical trials exploring the potential regenerative ability of cord blood stem cells to help treat conditions that have no cure today, including: acquired hearing loss, autism, cerebral palsy, and pediatric stroke. In fact, 73% of the stem cell units released by CBR have been used for experimental regenerative therapies – more than any other family cord blood bank in the world.
Taking time to consider helping another person when you are already busy planning for the birth of your child is greatly appreciated. A gift of cord blood may someday give someone a second chance at life.
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.
* Disclaimer: Banking cord blood does not guarantee that treatment will work and only a doctor can determine when it can be used. Cord tissue stem cells are not approved for use in treatment, but research is ongoing.
The main reason for this requirement is to give the cord blood bank enough time to complete the enrollment process. For the safety of any person who might receive the cord blood donation, the mother must pass a health history screening. And for ethical reasons, the mother must give informed consent.
Our annual storage fee is due every year on the birth date of the child and covers the cost of storage until the following birthday. The fee is the same $150 for both our standard and our premium cord blood services. The annual cord tissue storage fee is an additional $150.
Banked cord blood is most abundant in white blood cells and stem cells. While a lot of attention is paid to the stem cells, there are approximately 10 times more total nucleated cells (TNCs) than stem cells in any cord blood collection. TNCs are basically white blood cells, or leukocytes; they are the cells of the immune system that protect the body. Despite stem cells comprising one-tenth of most collections, cord blood is still considered a rich source of hematopoietic (he-mah-toe-po-ee-tic) stem cells (HSCs). HSCs are often designated by the marker CD34+. Hematopoietic stem cells can become two categories of cells: myeloid and lymphoid cells. Myeloid cells go on to form your red blood cells, platelets, and other cells of the blood. Lymphoid cells go on to become the B cells and T cells and are the basis for the immune system. Cord blood also contains mesenchymal (meh-sen-ki-mal) stem cells (MSCs), but they are much more abundant in cord tissue, which we will discuss in a minute.
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.
Private companies offer to store cord blood for anyone who wants it done, whether or not there is any medical reason known to do so at the time. The fee for private storage varies, but averages about $1,500 up front and $100 per year for storage. When there is no one in the family who needs a transplant, private storage of a newborn’s cord blood is done for a purely speculative purpose that some companies have termed “biological insurance.”
The American Academy of Pediatrics supports efforts to provide information about the potential benefits and limitations of cord blood banking and transplantation so that parents can make an informed decision. In addition, the American College of Obstetricians and Gynecologists recommends that if a patient requests information on umbilical cord blood banking, balanced information should be given. Cord blood education is also supported by legislators at the federal and state levels. In 2005, the National Academy of Sciences published an Institute of Medicine (IoM) report titled “Establishing a National Cord Blood Stem Cell Bank Program”.
^ a b c d e f Juric, MK; et al. (9 November 2016). “Milestones of Hematopoietic Stem Cell Transplantation – From First Human Studies to Current Developments”. Frontiers in Immunology. 7: 470. doi:10.3389/fimmu.2016.00470. PMC 5101209 . PMID 27881982.
The area where the bone marrow was taken out may feel stiff or sore for a few days, and the donor may feel tired. Within a few weeks, the donor’s body replaces the donated marrow; however, the time required for a donor to recover varies. Some people are back to their usual routine within 2 or 3 days, while others may take up to 3 to 4 weeks to fully recover their strength.
^ Li, T; Xia, M; Gao, Y; Chen, Y; Xu, Y (2015). “Human umbilical cord mesenchymal stem cells: an overview of their potential in cell-based therapy”. Expert Opinion on Biological Therapy. 15 (9): 1293–306. doi:10.1517/14712598.2015.1051528. PMID 26067213.
There are a number of different processing methods out there for a cord blood bank to use, and the processing method can ultimately affect the purity of the final product, which we’ll explain in a minute. Once the stem and immune system cells have been isolated and extracted from the plasma and red blood cell, they are mixed with a cryo-protectant and stored in a cryo-bag. We overwrap our bags for added protection and use a technique called “controlled-rate freezing” to prepare the cells for long-term storage. The overwrapped cryo-bag is housed in a protective metal cassette and placed in vapor-phase liquid nitrogen freezer for long-term preservation.
An additional cost that is borne only by public banks is the “HLA typing” that is used to match donors and patients for transplants. This is an expensive test, running about $75 to $125 per unit. Family banks always defer this test until it is known whether a family member might use the cord blood for therapy.
If a sibling of a child whose cord blood you banked needs a transplant, then your chances of a match will be far higher than turning to the public. However, the safest bet is to bank the cord blood of all your children, safeguarding them against a number of diseases and ensuring a genetic match if necessary.
Adverse effects are similar to hematopoietic stem cell transplantation, namely graft-versus-host disease if the cord blood is from a genetically different person, and the risk of severe infection while the immune system is reconstituted. There is a lower incidence with cord blood compared with traditional HSCT, despite less stringent HLA match requirements.