What does it mean to be MRD positive at 100 days after a stem cell transplant for myeloma?
Being MRD positive at the 100-day mark means that sensitive testing has detected a small number of myeloma cells still present in the bone marrow after the transplant. It's understandably concerning to hear, but it's important to Show Full Answer
What does it mean to be MRD positive at 100 days after a stem cell transplant for myeloma?
Being MRD positive at the 100-day mark means that sensitive testing has detected a small number of myeloma cells still present in the bone marrow after the transplant. It's understandably concerning to hear, but it's important to understand what this does — and doesn't — mean. Here's what's helpful to know about MRD positivity after transplant:
- It doesn't mean treatment failed. Some remaining cells may simply have escaped the effects of high-dose chemotherapy rather than being resistant to it.
- It may signal a higher relapse risk. If MRD is still detectable after treatment, a relapse could potentially happen sooner than if MRD were undetectable.
- It helps guide next steps. Doctors use MRD results alongside other factors to monitor progress and adjust treatment plans, such as maintenance therapy decisions. It's also worth knowing that MRD testing is still an evolving area. There aren't yet firm universal guidelines on exactly how doctors should act on MRD results, so different specialists may approach this differently.
The most important next step is a thorough conversation with the oncologist about what this result means for the specific situation and what options — like adjusting or continuing maintenance therapy — might be considered going forward.
July 9
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