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DiscussionAnyone experienced Bone Marrow Transplant with TP53 mutation?
Bone Marrow Transplant (BMT) & CAR-T Cell Therapy | Last Active: 3 days ago | Replies (27)Comment receiving replies
Replies to "What a terrific post of info by roywalton. I cannot believe the journey i have been..."
@katgob - you're in great hands at COH! Myelodysplastic syndromes (MDS) likely stem from a mix of factors, and your case—possibly tied to BRCA2, TP53, 5q deletion, chemotherapy, or Lynparza (olaparib)—is understandably confusing. MDS involves faulty bone marrow producing abnormal cells (blasts). Your BRCA2 mutation, known for breast/ovarian cancer, impairs DNA repair, potentially making bone marrow cells vulnerable to damage from chemotherapy (e.g., alkylating agents), which is a common cause of therapy-related MDS (t-MDS), often with 5q deletion or TP53 mutations. These occur in 15% and 5-40% of MDS cases, respectively, with TP53 linked to worse outcomes and higher blasts. Lynparza, a PARP inhibitor, rarely (< 2%) triggers MDS, especially in BRCA2 carriers post-chemotherapy, but it’s less likely the sole cause. Blasts reflect disease severity, not its cause, with >5% indicating higher-risk MDS. De novo MDS, driven by spontaneous mutations (e.g., SF3B1, TET2), is also possible, especially with age. Your BRCA2 knowledge likely focused on solid tumors, as its MDS link is less discussed but recognized in t-MDS (16-21% of cases). The shock of these mutations and MDS is valid—it’s often found late via bone marrow tests. Ask your doctor for cytogenetic/molecular results to clarify your subtype (e.g., del(5q), TP53-mutated) and guide treatment (e.g., lenalidomide for del(5q), hypomethylating agents for TP53). Clinical trials or support groups (e.g., MDS Foundation) may help. Share test details for deeper insights. Do you feel more in control as you learn more about genes and genetic testing?