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  • Title: [Analysis of chimerism in patients with hematologic malignancies after allogeneic hematopoietic stem cell transplantation].
    Author: Furukawa T, Hashimoto S, Inano K, Yamazaki F, Takeda H, Kakihara T, Yano T, Abe T, Higuchi W, Toba K, Takahashi M, Koike T, Aizawa Y.
    Journal: Rinsho Ketsueki; 2001 Jun; 42(6):488-95. PubMed ID: 11505528.
    Abstract:
    Serial monitoring of chimerism after allogeneic hematopoietic stem cell transplantation (HSCT) can be performed easily and rapidly using PCR-based assays analyzing informative tandem repeat genetic markers. Sequential analysis of individual chimerism status was performed in 34 patients who underwent myeloablative allo-HSCT using a commercial multiplex short tandem repeat (STR) kit. Mixed chimerism (MC) was found in 14 of the patients for more than one month. The incidence of MC seemed to be dependent on the type of disease or pretransplantation regimen. There was no significant difference in relapse rates between MC and complete donor chimerism (CC) in all patients. However, the relapse rate was significantly higher in MC than in CC among patients with acute leukemia. The severity of acute graft-versus-host disease (aGVHD) was significantly reduced in the patients with MC. Most of the MC patients with hematologic malignancies had transient mixed T-lymphoid chimerism, and CC was achieved within 6 months after HSCT in such cases. Patients with MC beyond 6 months after HSCT and patients with reappearance of autologous signals (MC after CC) may have an enhanced risk of relapse.
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