How is a patient evaluated for a stem cell transplant? Learn about HLA typing, donor matching, and the comprehensive pre-transplant screening process at Liv Hospital.

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Diagnosis and Evaluation

The Path to a Successful Transplant

The Pre-Transplant Assessment Phase

A stem cell transplant is not a procedure that is decided upon lightly. It requires a rigorous, multi-step evaluation process to ensure that the patient’s body can withstand the treatment and that the transplant offers the best chance for a cure. At Liv Hospital, this evaluation phase is the cornerstone of our success. We utilize advanced genetic testing and comprehensive organ screening to create a personalized “risk-benefit” profile for every international patient.

The diagnosis and evaluation phase answers three critical questions:

  1. Is the disease sensitive to the transplant (will it work)?
  2. Is the patient physically strong enough for the procedure?
  3. Do we have a suitable stem cell donor?
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How is the need for a transplant confirmed?

Disease Status Verification

Before planning a transplant, we must confirm the exact status of the disease. A transplant is most effective when the disease is in “remission” (low levels) rather than when it is bulky and aggressive.

Key Diagnostic Tests:

  • Bone Marrow Biopsy and Aspiration: This is the gold standard. We take a small sample of the bone marrow (usually from the hip) to look for cancer cells or to assess marrow failure.
  • Flow Cytometry: A laser-based technology that analyzes the physical and chemical characteristics of cells in the bone marrow sample. It allows us to detect even minute amounts of leukemia cells (Minimal Residual Disease – MRD) that might be missed by a microscope.
  • Cytogenetics: We examine the chromosomes of the leukemia or lymphoma cells. Specific chromosomal changes (like deletion 17p in CLL or t(9;22) in CML) tell us how aggressive the disease is and if a transplant is the only way to cure it.
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What is HLA Typing and why is it critical?

Physiological Organ Function Testing

For patients needing an allogeneic (donor) transplant, Human Leukocyte Antigen (HLA) typing is the most important test. HLA markers are proteins on your cells that tell your immune system which cells belong to you and which are “foreign.”

The Matching Process at Liv Hospital:

  • Goal: To find a “10/10” match. The closer the match, the lower the risk of rejection or Graft versus Host Disease (GvHD).
  • High-Resolution Typing: Unlike standard blood tests, we use high-resolution DNA-based typing to look at the HLA genes in extreme detail. This precision is vital for reducing post-transplant complications.
  • Family Screening: We first test full siblings, as they have a 25% chance of being a perfect match.
  • Unrelated Donor Search: If no sibling matches, we search international registries (like NMDP/Be The Match) using our accredited access.
  • Haploidentical Options: If no full match is found, we evaluate parents or children for a “half-match” transplant using special processing technology.

How do imaging and molecular tests guide the decision?

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Beyond blood work, seeing the extent of the disease is crucial. We employ advanced imaging to “stage” the patient before the transplant.

Advanced Imaging Modalities:

  • PET-CT Scans: For lymphoma and multiple myeloma patients, this scan uses a radioactive sugar tracer to light up active cancer cells. A “negative” PET scan before transplant is a strong predictor of success.
  • MRI (Magnetic Resonance Imaging): Used to detect subtle bone lesions in multiple myeloma or to check for iron overload in the liver and heart for thalassemia patients.

Next-Generation Sequencing (NGS): This powerful genetic test scans hundreds of genes simultaneously. It helps us find “targetable mutations” (like FLT3, IDH1, or TP53). Knowing these mutations allows us to:

  1. Predict how well the transplant will work.
  2. Add targeted drugs (like inhibitors) to the conditioning regimen to improve outcomes.

What does the "Pre-Transplant Evaluation" involve?

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Once a donor is identified (or an autologous plan is made), the patient undergoes a “fitness” test. The high-dose chemotherapy used in conditioning puts stress on every organ, so we must ensure they are up to the task.

Organ Function Screening:

  • Heart: An Echocardiogram (ECHO) and MUGA scan measure the “ejection fraction” (LVEF). A score above 50% is typically required.
  • Lungs: Pulmonary Function Tests (PFTs) measure lung capacity (FEV1 and FVC) and the ability to transfer oxygen (DLCO).
  • Kidneys: We check the Glomerular Filtration Rate (GFR) to ensure kidneys can flush out the chemotherapy drugs safely.

Dental Evaluation: A panoramic X-ray and exam are mandatory. Any tooth decay or gum infection must be treated before the transplant, as oral bacteria can cause life-threatening sepsis when the immune count drops.

How do doctors calculate the risk of the procedure?

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At Liv Hospital, we believe in transparency. We use the HCT-CI (Hematopoietic Cell Transplantation-Comorbidity Index) score. This tool combines the patient’s age, organ function, and other health issues (like diabetes or prior infections) to predict the safety of the transplant.

  • Low Score (0-2): Indicates the patient is fit and can tolerate “Myeloablative” (full intensity) conditioning, which offers the highest chance of preventing relapse.
  • High Score (3+): Suggests the patient is better suited for “Reduced Intensity” (RIC) or “Non-Myeloablative” (Mini) conditioning. This approach relies more on the donor’s immune system (Graft versus Tumor effect) to fight the cancer rather than high-dose chemo.

What is the remote evaluation process for international patients?

Traveling for a transplant is a big step. To make it easier, Liv Hospital offers a “Remote Second Opinion” service.

  • Document Review: You send us your pathology reports, latest blood work, and imaging discs via a secure portal.
  • Tumor Board Review: Our multidisciplinary council (hematologists, radiologists, and transplant coordinators) reviews your case.
  • Virtual Consultation: You meet with a transplant specialist via video call to discuss preliminary eligibility and the proposed treatment plan.
  • Cost Estimate: Based on this plan, we provide a transparent cost estimate so there are no surprises upon arrival.

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FREQUENTLY ASKED QUESTIONS

How long does the donor search take?

If a sibling is a match, it takes only 1-2 weeks. For an unrelated donor search through international registries, it can take 1 to 3 months. In urgent cases, we expedite this or consider a haploidentical (family) donor which can be arranged in days.

It causes brief pressure and discomfort. At Liv Hospital, we perform biopsies under sedation or local anesthesia to minimize pain and anxiety.

Not necessarily. We can review your initial medical reports (pathology, blood work) remotely to determine preliminary eligibility. However, the final organ screening and HLA confirmation must be done at our center before admission.

If organ function is borderline, we may optimize your health with medication or exercise before the transplant. In some cases, we switch to a “reduced intensity” protocol that puts less stress on the organs.

Surprisingly, no. HLA type matters, but blood type (A, B, O) does not. If your donor has a different blood type, your blood type will actually change to match the donor’s after the transplant!

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