It is a bone marrow donor registry operated by the nonprofit National Marrow Donor Program. It connects volunteer donors with patients seeking a compatible bone marrow transplant when a relative cannot provide one, giving medical teams another potential source of blood-forming stem cells.
This guide explains how the Be The Match program connects people searching for a transplant with potential donors, covering eligibility, matching, registration, and the need for volunteer support.
What Be The Match Does for Patients and Donors
A transplant search can require a compatible donor when a patient’s relatives do not provide a suitable match. The registry expands that search beyond one family by connecting stored donor information with requests submitted by transplant centers.
The National Marrow Donor Program, also known as NMDP, operates this network. Volunteer profiles may come from several countries, giving a transplant team more options when a sibling or other relative is not an appropriate donor.
- Volunteer donor pool: Adults may register their willingness to provide blood-forming stem cells if a compatible patient is identified.
- Donor search support: The organization assists transplant centers with searches when a related-donor option is unavailable or unsuitable.
- International connections: A search may involve potential donors in more than one country when no suitable match is identified sooner.
- Distinct process stages: Registration, identification as a possible match, donation, and transplantation are separate steps with different decisions.
Joining creates a searchable record rather than scheduling a procedure. Staff may contact a registrant when stored information suggests possible compatibility, but health, availability, further testing, and the transplant strategy still require review.
Your willingness to register can support a search that occurs years later. You can also withdraw, although you should first understand the program’s purpose, the information involved, and the long-term nature of the commitment.
Because matching only helps when suitable donors are available, their willingness to register determines how many patients can receive potentially lifesaving transplants.
Why Bone Marrow Donors Are Needed
Bone marrow contains blood-forming stem cells inside certain bones. These cells produce red blood cells, white blood cells, and platelets, so replacing damaged cells may be necessary when cancer, inherited disease, or another disorder disrupts the system.
Bone marrow donation involves more than finding someone with a similar background. A transplant team must determine whether transplantation fits the patient’s diagnosis and health, while a suitably typed donor remains one of the available treatment considerations.
Diseases That Can Lead to a Donor Search
A search may occur for leukemia, lymphoma, sickle cell disease, thalassemia, and other blood or immune-system disorders. The same diagnosis does not lead to an identical plan, because age, overall health, prior treatment, and available alternatives differ among patients.
Leukemia can damage blood-forming cells and cause a need for replacement therapy. Sickle cell disease changes red blood cells, while thalassemia affects the body’s ability to produce normal hemoglobin, so transplantation decisions depend on the full medical picture.
The registry does not prescribe treatment. When a transplant is part of a patient’s care, the organization can help locate potential donors, while the specialist doctor directs the clinical plan at the transplant center.
Why HLA Matching Matters
Two patients with the same disease may have different donor-search outcomes because compatibility depends on inherited immune-system markers. Human leukocyte antigens, or HLA, help the immune system recognize cells, so a closer match can affect transplant planning.
HLA typing examines relevant inherited markers rather than personality, appearance, or family resemblance. Staff compare the patient’s information with stored donor data, but the transplant center also weighs medical factors before selecting a potential donor.
You cannot determine compatibility from age or sex alone. Typing supplies important biological information, yet availability, health, prior medical history, and the transplant plan also influence whether a match can move forward.
How the Bone Marrow Donor Matching Process Works
Matching begins with tissue-typing data rather than a general description of a person. A transplant center submits a patient’s search information, and the registry compares relevant HLA markers with stored records to identify possible matches.
HLA typing requires a biological sample, such as a cheek swab or blood sample. Some searches also consider donor age, sex, cytomegalovirus status, and other factors determined by the transplant strategy.
| Stage | What happens | Why it matters |
|---|---|---|
| Search initiation | A transplant center asks the registry to search for potential donors. | The request is tied to a patient’s diagnosis and planned treatment. |
| HLA comparison | Stored donor typing is compared with the patient’s information. | The system identifies profiles that may warrant closer review. |
| Potential match | Relevant markers appear compatible enough to continue. | Contact may follow, but the outcome is not yet final. |
| Medical review | The transplant team reviews donor health and selection factors. | Compatibility alone cannot authorize a donation. |
Who Participates in a Donor Search
Your search involves several specialized roles rather than one person comparing names. Transplant staff coordinate the request, the National Marrow Donor Program shares appropriate registry information, and trained staff may contact a potential donor.
Consider a patient whose siblings do not provide a suitable match. The search may expand to other relatives before reaching the registry, because inherited HLA markers can differ widely even among close family members.
Your record is useful only when the registry can verify your current contact information and assess your continued eligibility. A move, new phone number, or major health change can affect its ability to reach you.
Update the registry after a move or significant health change. Current details do not promise donation, but they allow staff to determine whether your record is still available when a potential patient appears.
Joining the registry creates the searchable pool that makes this entire matching process possible.
How to Join the Bone Marrow Donor Registry
Online enrollment begins with basic health and contact information. Although the application is relatively short, your answers determine whether you can enter the registry and how useful your profile may be during a future search.
- Review current rules: Check the program’s medical and age requirements before submitting an application.
- Enter accurate details: Provide truthful health information and dependable contact data through the enrollment process.
- Complete required follow-up: Respond to any additional instructions before your profile is fully entered into the search system.
- Maintain your record: Update your address, phone number, and health status when circumstances change.
- Respond to serious requests: Consider carefully if staff contact you about a possible match and additional testing.
Most registrants never donate. Your value to the search is tied to having an accurate, current profile, because a particular donor may be needed for only one patient and a compatible profile can remain uncommon.
A long period without contact does not mean your registration has failed. The registry needs a large pool because an exact match may emerge only after years, and a profile can be unavailable when a patient search begins.
What Happens After Potential Match Contact
A call or message starts another review, not an automatic donation. Staff may ask about travel, health history, medications, or willingness to continue, and a transplant team must still assess whether the donation fits its plan.
You can stop at several stages. Your availability may change, medical evaluation may rule out donation, or the transplant strategy may change. Even a confirmed match does not override the medical review required for either the donor or recipient.
Ask for a clear explanation whenever you do not understand the findings or requested next step. You control whether to continue after learning more, and a registry record alone gives staff no authority to proceed without your informed participation.
Before completing registration, you should confirm that your health and personal history meet the program’s donation criteria.
Who Can Become a Bone Marrow Donor
Eligibility depends on the rules in effect when you apply and the donation method under consideration. Prospective volunteers generally must meet Be The Match’s adult age range and medical requirements, which can change as the program updates its standards.
- Check your age: Confirm that you fall within the registry’s current adult age range.
- Review your health: Medical eligibility can depend on your history, current condition, and previous procedures.
- Distinguish donation types: Eligibility for routine blood donation does not automatically establish marrow registry eligibility.
- Understand the request: Learn what future contact and evaluation could involve before completing the health questions.
- Use current guidance: Review the National Marrow Donor Program website for present requirements and enrollment instructions.
Bone marrow donation differs from routine blood donation because the cells must be compatible with a specific patient. A blood center applies its own criteria, and acceptance there does not mean you qualify for the marrow registry or a transplant.
Never assume that one donation program’s requirements carry over to another. Compare age rules, health standards, procedures, and time commitments on the current National Marrow Donor Program materials before submitting an application.
How to Make an Informed Registry Decision
Registration is a long-term statement of willingness rather than a promise to donate on a set date. You can decide whether that ongoing availability fits your values, health, family responsibilities, and future plans before entering the pool.
Separate the Three Main Commitments
Your agreement covers three different obligations. First, you provide truthful health information. You also keep the registry informed about how to reach you. If a potential match appears, you consider the request seriously before deciding whether to continue.
Registration itself does not create a binding donation agreement. Before further testing, you can learn what the request involves, how long the process may take, and what information the transplant center needs.
The Bone Marrow Donor Information Center and transplant staff can answer procedural and medical questions as the situation develops. Their role is to explain the process, assess suitability, and support an informed choice rather than compel participation.
How Be The Match Patient Support Fits
Patient support helps families understand the donor-search process, available resources, and the responsibilities of a transplant center. This assistance provides information during a difficult transition, but it does not replace the center’s medical recommendations.
Clear communication can prevent an expensive misunderstanding about roles. Some applicants think registration means an immediate procedure, while others think the registry chooses a treatment. Neither assumption is correct, so your questions should cover both donor and patient stages.
You can request support when a search begins rather than waiting until confusion becomes a barrier. Ask for instructions about staff contacts, available resources, patient education, and the role of the treating transplant center.
Take the Next Step Carefully
- Read current rules: Review the medical and age requirements before starting an application.
- Ask detailed questions: Separate registration, contact, testing, donation, and transplantation.
- Report health changes: Contact the registry after a significant change in your medical history.
- Update contact details: Give staff a current address and phone number so they can verify availability.
- Use official resources: Review current enrollment and patient information through NMDP.
Your final decision should reflect the matters that matter most to you. A patient or family can contact the transplant center or Be The Match patient support, while a potential donor can review current eligibility through the National Marrow Donor Program.
Before submitting your application, check the instructions once more. Confirm that you understand the long-term commitment and know where to report a change in your health, address, or phone number.
Key Points About the Donor Registry
Be The Match turns a broad volunteer network into a structured search for compatible donor cells. Registration begins the process, potential contact starts another review, and transplantation remains a medical decision made by the treating team.
Your role is to provide accurate information and remain willing to consider a future request. The transplant team evaluates the patient and donor, while the registry helps identify, educate, and coordinate potential matches.
Frequently Asked Questions About Be The Match
What is Be The Match?
It is a bone marrow donor registry operated by the nonprofit National Marrow Donor Program. It connects volunteer donors with patients seeking a compatible bone marrow transplant when a relative cannot provide one, giving medical teams another potential source of blood-forming stem cells.
Who runs Be The Match and what is its role?
The National Marrow Donor Program operates Be The Match. The organization maintains volunteer donor records, supports searches initiated by transplant centers, and may contact potential donors when their HLA information suggests compatibility.
Why are bone marrow donors needed?
Patients with leukemia, lymphoma, sickle cell disease, thalassemia, or another serious disorder may need a bone marrow donor when no suitable related donor is available. A transplant team evaluates whether replacing damaged blood-forming cells is medically appropriate.
How does the bone marrow donor matching process work?
The process compares a patient’s HLA markers with donor information held in the registry. A close result creates a potential match, which can lead to contact and additional testing. Your health, availability, and the transplant center’s medical review also shape the next stage.
Who is eligible to join the Be The Match registry?
Prospective volunteers generally must be adults who meet the organization’s current medical and age requirements. Eligibility rules can change, so review the latest information through the National Marrow Donor Program before submitting your health and contact details.
What happens if a registered donor is identified as a match?
Registry staff may contact you to explain the potential match and request updated information. You can then decide whether to continue, after which staff may arrange additional questions or biological samples for the transplant team’s review.
