Mobilization of hematopoietic stem cells (HSCs) by using Pleriksafor (Mozobail) in combinationwith colony-stimulating factor in patients with previous failure transplant procurement for autotransplantation of HSCs

AutoHSCT is an effective treatment for patients with relapsed and refractory lymphomas, multiple myeloma, some solid tumors. For a successful transplantation it is necessary to obtain an adequate quality and quantity transplant. Due to the heavy pretreatment this category of patients receiving a transplant can be a serious problem, which can be solved with the use of the new mobilizing agent inhibitor CXCR4 - plerixafor. In our study, 10 patients, of which 7 were confirmed as «poor mobilizers» were stimulated with colony stimulating factor, together with a plerixafor dose 0,24 mg/kg body weight on day 5 and 6 of stimulation. In 9 of the 10 patients we had obtained an adequate transplant. In all patients before the administration of plerixafor low or intermediate number of CD34+ cells per microliter of peripheral blood was obtained. The patient failed to mobilize with the use of plerixafor mentioned the smallest number of CD34+ cells per microliter in peripheral blood both before and after administration of plerixafor. In 9 patients, the content of CD34+ cells after stimulation with plerixafor increased by 2-4 times.