Determining Late Engraftment Following Single Cord, Unrelated Transplantation: An Analysis of the Eurocord Registry

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 650-650
Author(s):  
Riccardo Saccardi ◽  
Myriam Labopin ◽  
Annalisa Ruggeri ◽  
Chantal Kenzey ◽  
Wagnara Chaves ◽  
...  
Keyword(s):  
Median Time ◽  
Cumulative Incidence ◽  
Prolonged Exposure ◽  
Conflicts Of Interest ◽  
Conditioning Regimen ◽  
Clinical Problem ◽  
Clinical Decision ◽  
Time Interval ◽  
Maximum Probability

Abstract Abstract 650 INTRODUCTION. The most prominent clinical problem in CB transplant is a slower engraftment kinetic, as compared to the conventional SC sources. Engraftment failure is usually defined in CB transplantation as a lack of PMN recovery 60 days after transplant, whilst a definition of late engraftment is currently lacking. A late engraftment is a major cause of transplant-related mortality (TRM), due to the prolonged exposure of the recipient to the infective and hemorrhagic risk. After the HSCT, the probability of engraftment at each time interval tends to increase up to a maximum and then gradually decreases, which is typically represented by a sinusoid curve. The decrease of engraftment probability after transplant results in a rapidly increasing risk of TRM; therefore such a turning point should be considered the beginning of a risk phase for late/no engraftment. Therefore, it is important to find the time point after UCBT in which the probability of engraftment will decrease in order to help taking a decision for rescue with a second transplant. We analyzed the clinical expectations beyond this time in a homogenous population of CB recipients. PATIENTS AND METHODS. We investigated the engraftment kinetic in a population of 1215 patients who received a single, unrelated CB transplant for Acute Leukemia (AL) in Complete Remission (CR) following a Myeloablative Conditioning Regimen (MAC). All patients were transplanted in EBMT Centers and reported to the Eurocord Registry from 1994 to 2010. Ratio Lymphoid/Myeloid Leukemias was 769/445, reflecting a major proportion of pediatric patients over adults (857/357). Patients were transplanted in first (43.4%), second (46,6%), or third or subsequent remission (10%), respectively. Median (range) age at transplant was 9.5 (0.3-63) years. Median weight (Kg) at transplant was 33 (5-112). Out of 1089 patients evaluable for HLA-matching, 601 (55.2%) were mismatched for 0–1 loci, 448 (41.1%) for 2 loci and 40 (3.6%) for more than 2 loci. Fifty percent of the patients had a TBI-based myeloablative regimen. Data on TNC counts at freezing of transplanted CBU were available in 963 cases: median and range were 5 (1.1-41.83)x107/Kg. RESULTS. The median FU was 30 months (1-174). At 24 months overall survival was 49±2%, TRM was 32±2%. Median time of engraftment was 24 days (10-133) with a cumulative incidence of 86±1% at day 60. Analyzing the cumulative curve of engraftment, we considered the engraftment probability within intervals of five days after the transplant; in fact the highest probability of engraftment was at day 25 and dropped of 50% at day 42. Among 167 patients (13.7%) who did not engraft at this time, 63 patients (38%) experienced a late engraftment with a median time of 47 days (43-131) after transplant. The cumulative incidence of engraftment at 120 days was 37% and 38% at day 180 without any further increasing later on. Out of the 104 patients who never engrafted, 74 died and major causes of death were bacterial (17%), viral (10%) and fungal (9%) infections, respectively, whilst 30 patients are alive at the last follow up. Information of graft failure treatment was available for 84 patients. Twenty eight did not receive any treatment (25 died at a median time of 80 days form UCBT), 24 had an autologous back up and 32 underwent a second allogeneic HSCT (14 second UCBT, 9 Haplo PBSC and 9 unrelated BMT). Of those 32, 17 patients engrafted, 5 relapsed; 24 died, 8 are alive at last follow up. CONCLUSIONS: The maximum probability of engraftment after UCBT for patients with AL in remission is at day 25 and halves at day 42, thus suggesting that a clinical decision should be made within this period. In particular, rescue actions, such as infusion of another graft, either allogeneic of autologous, should be considered. Such a model can be applied to different subsets of patients and is particularly useful in transplant at high risk of late engraftment such as UCBT. Disclosures: No relevant conflicts of interest to declare.

Reduced Intensity Conditioning (RIC) Allogeneic Stem Cell Transplantation (allo-SCT) in Patients with Haematological Lymphoid Malignancies: Long Term Follow-up in a Single Centre Series.

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 4326-4326
Author(s):  
Malek Benakli ◽  
Redhouane Ahmed nacer ◽  
Amina Talbi ◽  
Rachida Belhadj ◽  
Farih Mehdid ◽  
...  
Keyword(s):  
Complete Remission ◽  
Hodgkin Lymphoma ◽  
Median Time ◽  
Conflicts Of Interest ◽  
Late Onset ◽  
Chronic Gvhd ◽  
Conditioning Regimen ◽  
Lymphoid Leukaemia ◽  
Autologous Transplant

Abstract Abstract 4326 Background Patients (pts) with recurrent and refractory haematological lymphoid malignancy (HLM) have a very limited survival expectance. RIC allo-SCT has been proposed as a strategy for retaining the graft versus malignancy effect of allo-SCT while decreasing transplant related mortality (TRM). Here, we retrospectively studied a series of 32 pts treated by RIC allo-SCT. Patients and methods Between April 2001 and November 2007, 32 pts with HLM underwent RIC allo-SCT with an HLA-identical sibling donor. Fifteen pts with multiple myeloma, 7 pts with Non-Hodgkin lymphoma, 6 pts with Chronic lymphoid leukaemia, 3 pts with Hodgkin lymphoma and 1 pt with Waldenstrom disease. At time of allo-SCT, 10 pts were in complete remission (3 received prior autologous transplant) and 22 in refractory/progressive disease (6 received prior autologous transplant). Median age was 38 years (range, 28-60) and the sex-ratio (M/F) 2,2. Median time from diagnosis to RIC allo-SCT was 18 (range,6-76) months. The conditioning regimen included Fludarabine 150mg/m2 and Melphalan 140mg/m2. GVHD prophylaxis consisted of association cyclosporine (cSA) and mycophenolate (MMF). All pts received G-CSF mobilised peripheral blood stem cells, with a median CD34+ cell count: 6,2.106/kg (range, 1.9-13,6). Results Neutropenia occurred in all pts (100%) and the median duration of aplasia was 9 (range, 5-16) days. Only 10 pts (31 %) required red blood cells transfusions and 23 pts (71 %) needed platelets transfusions. Acute GVHD was observed in 15 cases (47 %) including 10 cases of grade II-IV. Fifteen pts (75 %) had chronic GVHD, of whom 9 with an extensive form. Four pts (12 %) had CMV reactivation at a median time 60 (range, 52-80) days after transplantation. Six pts (18 %) had late onset relapse at a median time of 13 (range, 4-45) months. TRM was 43 % at one year after RIC allo-SCT. With a median follow-up of 60 (range 18-97) months, 12 pts (37,5 %) are still alive in complete remission with full donor chimerism. Twenty pts (62,5 %) have died (5 early severe infections, 10 GVHD, 3 after relapse, one myocardial infarction, and one accident). Overall and progression-free survivals at 8 years are 31 % and 30 % respectively. Conclusion This study, after a large follow-up, suggests that RIC allo-SCT is a potential therapy for refractory or progressive HLM. However, TRM is still high likely due to the inclusion of refractory and heavily pretreated pts with many comorbid conditions. Disclosures: No relevant conflicts of interest to declare.

Rituximab In Allogeneic Hematopoietic Stem Cell Transplantation for Advanced Chronic Lymphocytic Leukemia with Fludarabine + Total Body Irradiation Conditioning: Results of a Phase II Prospective Multicenter Study (ITAC 02-02)

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 3520-3520
Author(s):  
Mauricette Michallet ◽  
Mohamad Sobh ◽  
Stephane Morisset ◽  
Mohamad Mohty ◽  
Gerard Socie ◽  
...  
Keyword(s):  
Median Time ◽  
Total Body Irradiation ◽  
Cumulative Incidence ◽  
Conflicts Of Interest ◽  
Univariate Analysis ◽  
Lymphocytic Leukemia ◽  
Positive Trend ◽  
Hematopoietic Stem ◽  
Total Body

Abstract Abstract 3520 Background: CLL remains incurable with standard therapies. Myeloablative allogeneic SCT (allo-HSCT) is still associated with high TRM and few late relapses. Recently, the major focus of transplantation in CLL has been with reduced-intensity conditioning (RIC) allo-HSCT, which is applicable to the more elderly patient population and which attempts to exploit the graft-versus-leukemia (GVL) effect that was proved in CLL Objective: To evaluate the efficacy and toxicity a RIC regimen including fludarabine and total body irradiation (TBI) with the introduction of rituximab for allo-HSCT in patients with a CLL stage B or C diagnosis. Materials and methods: This prospective study included adult CLL patients with age < 65 years in stage B or C in response after a salvage treatment either following at least 2 treatment lines (1 including fludarabine) or after a progressive disease after auto-HSCT, having a HLA identical sibling donor and a good performance status (Karnfosky >70%). Donors were mobilized by G-CSF and in case of collection failure, bone marrow aspiration was authorized. The conditioning included: rituximab 375mg/m2 on day -5, fludarabine 30 mg/m2 from day-4 to day-2, TBI 2grays (6-7 cGrays/minute) on day 0 and rituximab 500mg/m2 on day1 and day8. GVHD prophylaxis used cyclosporine A (IV 3mg/kg/day) from day-2 and mycomofetil fenolate oral (2g/day) from day 1. Results: Between April 2003 and December 2008, 40 patients were included, 34 (85%) males and 6 females with a median age of 54 years (35-65), 38 (95%) were in B stage at diagnosis and 2 in stage C. Among 23 explored for cytogenetics, 8 were abnormal (3 del17, 1 trisomy12, 1 t(8-11) & 1 del13). Before transplantation, 17 patients received 2 lines treatment, 10 three lines, 5 four lines, and 8>4. Only 1 patient received a previous auto-HSCT. Among 18 explored for Matutes status, 1 was in score 1, 1 in score 2, 3 in score 3, 5 in score 4 & 9 in score 5. At time of allograft, 7 (17%) patients were in complete response (CR), 29 (73%) in partial response (PR) and 4 (10%) < PR. For sex-matching, 59% were mismatched (27%of them were F>M). For ABO matching, 68% were compatible, 19% major incomp. & 13% minor incopm. The median interval diagnosis-allo-HSCT was 58 months (6-177). Median CD34+ number was 7.64 (3.1-18.7). Seven (17%) patients did not receive rituximab during conditioning because the protocol did not include it at the beginning and has been amended later. Thirty-nine (98%) patients engrafted with a median time to neutrophils recovery of 20 days (11-70), 79% of patients reached a total donor chimerism at day 90. Seventeen patients developed aGVHD grade ≥II (8 grII, 8 grIII & 1 grIV) with a cumulative incidence at 3 months of 44% (36-52). The cumulative incidence of cGVHD was, at 12 months: 29% (21-36) for limited and extensive; at 18 months: 32% (24-40) limited and 42% (34-50) extensive. After a median follow-up of 28 months (3-71), the median OS was not reached with 3 and 5-years probability of 55%(41-74). The median time of EFS was 30 months (15 - 70) with a 5-years probability of 46%(33-66). The cumulative incidence of relapse at 1 and 3 years was 17% (11-23) and 22% (15-29) respectively. The cumulative incidence TRM at 1 and 3 years was 10% (5-15) and 27% (20-35) respectively. At the last follow-up, 17 patients died, 6 due to relapse and 11 due to TRM. We noticed a high severe infection rate (56%) and 4% of deaths related only to infection. The univariate analysis showed a positive trend of rituximab on OS and relapse, and a significant protective effect on aGVHD>=2 (p=0.02). The multivariate analysis studying age, interval diagnosis-allo-HSCT, ABO and sex matching, disease status at allo-HSCT, CD34+ number, and rituximab, showed a positive significant impact of this last factor (rituximab) on OS and EFS [HR=0.1 [0-0.6] p=0.02 & HR=0.1[0-0.4] p=0.035 respectively]. Conclusion: We showed interesting results in terms of OS, relapse and TRM in patients with advanced CLL after Fludarabine/TBI allo-HSCT. The introduction of rituximab allowed a better outcome especially a significant reduction of incidence and severity of acute GVHD. Nevertheless there was still a high incidence of cGVHD, already known following the Fludarabine/TBI conditioning, leading us to propose either to increase the number of rituximab injections after allo-HSCT, or to test Fludarabine/busilvex/ATG associated to rituximab. Disclosures: No relevant conflicts of interest to declare.

HAART Does Not Improve the Outcome of HIV-Related Multicentric Castleman Disease: Results of a Multicentric Retrospective Study

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 4918-4918 ◽  
Author(s):  
Chiara Cattaneo ◽  
Emanuela Vaccher ◽  
Alessandro Re ◽  
Salvatore Casari ◽  
Erika Borlenghi ◽  
...  
Keyword(s):  
Median Time ◽  
Conflicts Of Interest ◽  
Primary Effusion Lymphoma ◽  
Case Series ◽  
Central Nervous System Lymphoma ◽  
Castleman Disease ◽  
Time Interval ◽  
Female Ratio ◽  
Multicentric Castleman Disease

Abstract Abstract 4918 Background. Multicentric Castleman Disease (MCD) is a rare lymphoproliferative disorder, strictly related to Kaposi Sarcoma (KS) as both associated to HHV-8 infection. Like other HIV-related diseases, such as Non Hodgkin Lymphoma (NHL) and Primary Central Nervous System Lymphoma, MCD prevalence is known to be increased in HIV-pos subjects. However, limited case series among this subset of patients (pts) are reported and data regarding epidemiological variations in the pre and post HAART era are often non conclusive. In order to evaluate possible differences between pre- and post-HAART era, we retrospectively evaluated epidemiological and clinical characteristics of all pts affected by HIV-pos MCD afferent to two Italian Institutions. Patients and Methods. Data concerning biological, clinical and prognostic factors of HIV-pos MCD pts were collected and reported on a database. Pts were grouped according to the date of diagnosis in pre- (before 1997) and post-HAART (after 1997) era. Results. During a 21-year period (1990-2011), 35 HIV-pos MCD pts were observed at our Institutions, nine in the pre- and 26 in the post-HAART era. Male/Female ratio was 30/5; median age 37y (23-65). Histological subtype in 34 evaluable cases was hyaline-vascular in 6, plasmacytic in 20 and mixed cellularity in 8. Median time interval from HIV-pos detection to MCD diagnosis was 24 months (range 0–157) and CD4 count at MCD diagnosis 233/mcL (26-839). All these MCD baseline characteristics were not statistically different between pre- and post-HAART era. A concomitant diagnosis of KS was made in 18/35 (51.4%) cases, all but one in the post-HAART era. NHL was diagnosed concurrently with MCD in 2/35 (5.7%) pts (1 Primary Effusion Lymphoma, PEL, and 1 Plasmablastic Lymphoma, PBL); in 8/35 (22.8%) cases NHL developed after MCD diagnosis (2 PEL, 1 PBL, 2 Diffuse Large Cell, DLC, 1 unspecified, respectively). Median time from MCD to NHL was 19 mo (0-71). Evolution toward NHL was observed in 3 (33%) cases in the pre-HAART era and in 5 (19%) in the post-HAART era (p=0.39, Fisher's exact test). Six pts did not receive any type of treatment, 6 were treated with HAART only and 23 with different therapies, including antivirals, steroids, chemotherapy and rituximab (alone in 1 pt, in combination with chemotherapy in 5). Nineteen/23 pts received HAART together with other therapies. Two pts treated with rituximab developed NHL (1 PEL and 1 DLC). A complete or partial radiological response, together with clinical improvement was observed in 19/25 of evaluable pts (76%). Thirty pts were evaluable for relapse/progression, mainly in the post-HAART era. Overall, 19/30 pts showed MCD progression or transformation to NHL; median PFS was 15 months. Nineteen pts died and 5 were lost to follow-up. Overall survival (OS) of the entire series was 28 months, without significant differences between pre and post-HAART era (18 and 28 months, OR 0.643 [CI 0.2406–1.045], median follow-up 18 and 9 months, respectively). Causes of death were evaluable in 18 cases: NHL (7), MCD (6), opportunistic infections (1), liver cyrrhosis (1), acute myocardial infarction (1), KS (1) and therapy-related toxicity (1). NHL and MCD were the most frequent cause of death in the post-HAART era (4 and 5 of the 10 cases, respectively). Although no differences in OS between MCD pts without or with NHL were seen (19 vs 28 months, OR 0.6786 [CI 0.2763–1.081], median follow-up 13 and 23 months, respectively), eight/10 pts with NHL died, in comparison with 11/21 pts without NHL evaluable for outcome and median time from NHL diagnosis to death was 2 months (0-31). Conclusions. Our data confirm that the prognosis of HIV-related MCD remains poor even after the advent of HAART. Unlike other lymphoproliferative disorders, HAART did not impact on outcome of HIV-related MCD, suggesting that MCD can “escape” immune reconstitution. A concomitant diagnosis of NHL and uncontrolled MCD seem to be the main reason for an unfavourable outcome, particularly in the post-HAART era. New therapeutic approaches, including rituximab, should therefore aim at avoiding NHL transformation and controlling “MCD-related cytokine storm”. Disclosures: No relevant conflicts of interest to declare.

Treatment of Relapsed AML and MDS After Allogeneic Stem Cell Transplantation: A Second Transplant From a Different Donor May Be the Most Effective Option

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 1963-1963
Author(s):  
Avichai Shimoni ◽  
Noga Shem-Tov ◽  
Yulia Volchek ◽  
Ronit Yerushalmi ◽  
Arnon Nagler
Keyword(s):  
Supportive Care ◽  
Median Time ◽  
Patient Group ◽  
Cumulative Incidence ◽  
Conditioning Regimen ◽  
Unrelated Donor ◽  
Matched Sibling ◽  
Relapsed Disease ◽  
Better Than

Abstract Abstract 1963 Salvage Therapy with Azacitidine Increases therapy for patients (pts) with AML and MDS. However, relapsed disease continues to be the most common reason for treatment failure. There is no standard treatment for relapsed disease after SCT. Treatment options range from supportive care alone to chemotherapy and donor lymphocyte infusion (DLI) and up to a second SCT from the same or a different donor. However, the most effective therapy is controversial and treatment results are often poor. We retrospectively analyzed the outcomes of 475 adult pts with AML (n=378) and MDS (n=97) given allogeneic SCT in a single institution over a 12 year period. The median age of this patient group was 54 years (range, 17–76), 279 men, 196 women. The donor was an HLA-matched sibling (n=246), 1-antigen mismatched related (n=10), or matched unrelated (n=219). Disease status at SCT was early (n=186), intermediate (n=87) or advanced (n=202) by CIBMTR criteria. The conditioning regimen was myeloablative (MAC, n=123), reduced-intensity (n=121) or reduced toxicity MAC (RTC, n=231).With a median follow-up of 40 months (range, 2 months – 12 years), 210 pts are alive, 103 died of non-relapse causes (NRM), 193 relapsed and 162 of them died. The cumulative incidence of relapse was 44% (95%CI, 39–49) and advanced disease at SCT was the only predicting factor for relapse, HR 2.3 (p< 0.001). Pts were given supportive care or low-dose chemotherapy alone (n=70), intensive chemotherapy ± DLI (including SCT from the same donor, n=99) or a second SCT from a different donor (n=24). In all, the median overall survival (OS) was 2.8 months, and the 2-year OS was 12% (95% CI, 7–17%). Among the 24 pts having a second SCT from a different donor, the median age at second SCT was 50 years (19–78). 18 pts were initially given SCT from a matched sibling, 12 were re-transplanted from a second sibling and 6 from an unrelated donor. Six pts were initially transplanted from an unrelated donor and re-transplanted from a different unrelated donor. The initial conditioning regimen was MAC (n=10), RTC (n=11) or RIC (n=3). The second regimen was most often fludarabine and treosulfan (FT, n=14) for those not previously given treosulfan, including all previously MAC recipients. Other regimens were fludarabine and busulfan (n=6) or FLAMSA (n=4). The median time from the first SCT to relapse was 14 months (2 months – 9 years), 6 within 6 months. The median time from first relapse to second SCT was 3 months (range, 1–41 months). 9 pts were in remission at second SCT with prior therapy, 9 were chemo-refractory, and 6 were re-transplanted with no attempts of re-induction. The median follow-up of surviving pts is 16 months (range, 2–74). 22 pts engrafted in a median of 13 days (range, 9–26). 2 pts died early from infections and 2 from GVHD and the cumulative incidence of NRM was 17% (95%CI, 7–42). 11 pts relapsed after second SCT, cumulative incidence 52% (95%CI, 34–79) 8 of them died. The estimated 2-year OS is 40% (95%CI, 16–63) and the 2-year disease-free survival is 31% (95%CI, 11–51). Pts re-transplanted in chemo-sensitive or untreated relapse had a better outcome than those with chemo-refractory relapse, 2 year OS 57% and 13%, respectively (p=0.02). Pts given FT for second SCT also fared better than the other regimens, 2-year OS 63% and 13%, respectively (p=0.02). 2 of 6 pts with relapse less than 6 months after SCT are long-term survivors after second SCT. The outcomes after second SCT seem better than the 12% 2 year OS of the entire relapsing patient group. To minimize the time bias of pts been able to have a second SCT, we compared their outcomes to the subgroup of 68 pts who were alive at least 3 months after relapse and theoretically been able to have a second SCT from a different donor. 14 pts in this subgroup are alive with an estimated 2-year OS of only 15% (95%CI, 4–22, p=0.02). Among these 68 pts, 37 achieved remission with re-induction, and were alive at least 3 months after relapse, and their 2-year OS was 26%, which is also inferior to the 2-year OS of 57% in pts re-transplanted in sensitive or untreated relapse (p=0.05). In conclusion, a second SCT from a different donor is feasible in a subset of pts with AML and MDS relapsing after SCT. Toxicity with the new RTC regimens, such as treosulfan-based is acceptable. This is a promising option for pts able to be successfully re-induced or re-transplanted early with a pre-identified second donor. These observations merit further confirmation in larger studies. Disclosures: No relevant conflicts of interest to declare.

Fludarabine Busulfan Compared to Fludarabine Melphalan Is Associated with Increased Relapse Risk in Reduced Intensity Conditioning Transplant Despite Pharmacokinetic Dosing

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 736-736 ◽  
Author(s):  
Moussab Damlaj ◽  
Hassan B Alkhateeb ◽  
Daniel K. Partain ◽  
Jehad Almasri ◽  
Mehrdad Hefazi ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Median Time ◽  
Cumulative Incidence ◽  
Dose Adjustment ◽  
Conditioning Regimen ◽  
Reduced Intensity Conditioning ◽  
Transplant Outcomes ◽  
Baseline Characteristics ◽  
Reduced Intensity

Abstract Background: Fludarabine plus busulfan (FB) and fludarabine plus melphalan (FM) are two commonly used reduced intensity conditioning (RIC) regimens for allogeneic hematopoietic stem cell transplantation (SCT). A recent analysis showed that both regimens had similar overall survival (OS) but relapse incidence (RI) was significantly higher with FB with a trend towards higher non-relapse mortality (NRM) in FM (Baron et al., Cancer 2015). However, that cohort included patients treated with oral and intravenous busulfan without pharmakokinetic targeting of intravenous which may impact anti-leukemic activity. Aim: Compare transplant related outcomes of FB vs. FM using intravenous (IV) busulfan targeted to the area under the curve (AUC). Methods: After due IRB approval, patients with acute myelogenous leukemia (AML) and myelodysplastic syndromes (MDS) receiving RIC-SCT from 2008-2014 were identified. All baseline and laboratory features were retrospectively extracted. Busulfan dose in FB was 0.8 mg/kg IV for 10 doses with therapeutic AUC target of 900-1500 mcmol/L (min). All patients received T-cell replete grafts. Categorical and continuous variables were compared using Pearson's chi-squared and Wilcoxon/Kruskal-Wallis, respectively. Survival estimates were calculated using the Kaplan-Meier method and curves were compared using the log-rank test. Cumulative incidence was computed as competing events using Grey's model. Univariate and multivariate analyses were performed using Cox regression modeling. Results: A. Baseline characteristics and AUC monitoring: 134 pts were identified (47 FB and 87 FM). Median follow up of the entire cohort was 40 months (0-63.3) and at last follow up, 60% and 29% have died or relapsed, respectively. Baseline characteristics stratified according to conditioning regimen are shown in table 1. Younger age (60 yrs FB vs. 61 yrs FM, p = 0.015) and a trend towards a higher CMV R-/D- status (28% FB vs. 14% FM p = 0.064) were the only significant differences identified. All patients in the FB group received intravenous busulfan and 46/47 patients had evaluable AUC data with a range of 732-1354 mcmol/L (min). A total of 19 patients were outside of range, all <900 mcmol/L (min) and required a median dose increase of 28.1% (3.3-50.2%) B. Engraftment and toxicity data: The median time for platelet engraftment was 19 days (0-48) for FB vs. 16 days (14-183) for FM (p = 0.0023) whereas the median time to absolute neutrophil count (ANC) engraftment was 18 days (7-30) for FB and 15 days (11-40) for FM (p = 0.077). Cumulative incidence of grade II-IV, III-IV acute GVHD and chronic GVHD at 2-yr was 57.3%, 11% and 52.8% for FB and 48.6%, 17% and 63.4% for FM (p = 0.73, 0.4 and 0.21, respectively). Two patients in the FM group died of cardiac causes (heart failure and sudden cardiac arrest). No cases of sinusoidal obstructive syndrome were observed in either arm C. Transplant outcomes: A significantly higher 2-yr relapse incidence (RI) was associated with FB vs. FM at 35.6% vs 17.3%, respectively (p = 0.0058). 2-yr progression free survival (PFS) was also significantly lower in the FB vs. FM at 51.2% vs. 65.1%, respectively (p 0.031). However, 2-yr OS and NRM was similar for FB vs. FM (53.1% and 22.9% vs 63.9% and 21.9%, respectively p = 0.26 and 0.89). Necessitating a dose adjustment based on AUC did not increase the risk for relapse or affect NRM. In multivariate analysis, FB was associated with increased RI with hazard ratio (HR) 2.29 (1.07-4.88; p = 0.033). Other factors significantly associated with RI on multivariate analysis were secondary/therapy related disease with HR 2.84 (1.34-6.02; p = 0.0067) and CR1 vs. other with HR 0.39 (0.17-5.32; p = 0.019). The significance of the results remained unchanged after exclusion of MDS patients (data not shown) Conclusion: Despite AUC dose adjustment, FB compared to FM was associated with increased RI with a similar OS and NRM. AUC dose adjustment did not impact transplant outcomes and its routine use in RIC should be further evaluated. Given the wide use of FB as a conditioning regimen, these important observations should be prospectively studied in a randomized fashion. Figure 1. Figure 1. Figure 2. Figure 2. Disclosures Al-Kali: Novartis: Research Funding. Wolf:Janssen Scientific Affairs, LLC: Consultancy.

Related or Unrelated Donor Results in Similar Outcomes after Hsct; Single Center Experience in Colombia

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 5512-5512
Author(s):  
Virginia Abello ◽  
Carmen Rosales ◽  
Manuel Rosales ◽  
Javier Figueroa ◽  
Iris Cordoba ◽  
...  
Keyword(s):  
Conflicts Of Interest ◽  
Conditioning Regimen ◽  
Developed Countries ◽  
Rank Test ◽  
Time Interval ◽  
Unrelated Donor ◽  
Fisher Exact Test ◽  
Late Time ◽  
Single Center

Abstract INTRODUCTION ASTC is the standard treatment in multiple hematologic diseases; unfortunately most patients do not have a compatible family donor, URD ASCT is an alternative to those patients. There is evidence from developed countries that outcomes may be similar regardless the donor, but there is not enough information from Latin America regarding survival after URD ASCT. We compared survival at 1 and 3 years from patients transplanted using related or unrelated donors in a single center in Colombia. MATERIALS AND METHODS Paired analysis was performed comparing one URD ASCT with one or two RD ASCT with similar characteristic in terms of age, diagnosis (AML, ALL, aplasia, CML, MDS), EBMT risk, year of transplant and conditioning regimen. Chi-square or Fisher exact test was used to compare the groups (p<0.05). The survival curves of Kaplan-Meier and log-rank test (p<0.05) were used to estimate the probabilities of one (OS1) and three (OS3) overall survival in different groups according to EMBT score risk. RESULTS 28 URD ASCT were performed between 2011 and 2014, 24 of those (18 matched and 6 missmatched URD ASCT) were paired with 41 RD ASCT. Of those 62% were males, mean age was 33.4 years, 70.8% patients were in early stages, almost 60% had more than 12 months interval between diagnosis and transplant. Most common diagnoses were acute lymphoid leukemia and acute myeloid leukemia. 80% of donors where found through NMDP. No significant differences in sex, age, disease status (early, intermediate, late), time interval from diagnosis to transplantation, and patient-donor sex combination, ranked according to EBMT risk score, were find between the tow groups. Median follow-up was 322 days (range 165-693), for the whole group. There were no significant differences in the OS1 or OS3 between URD o RD ASCT, in different EBMT score groups. Low risk: OS1: URD 86.6% vs RD 75.8%, p = 0.46; OS3: 86.6% vs 68.9%, p = 0.28. High risk OS1 75% vs 63.6%, p=0.92; OS3 75% vs 63.6%, p=0.92. CONCLUSIONS In this cohort of patients, the type of donor had no influence in the outcome measured in terms of OS. This is the first experience with URD ASCT in Colombia; longer follow up of this cohort is needed to confirm this results, but our findings suggest this transplantation modality is a real alternative to patients in our country in need of a transplant without an HLA identical related donor. Disclosures No relevant conflicts of interest to declare.

Bone Marrow (BM) Versus Peripheral Blood Stem Cell (PBSC) For Haploidentical Transplantation With Nonmyeloblative (NMA) Conditioning Regimen and Post Infusion Cyclophosphamide

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 2119-2119
Author(s):  
Luca Castagna ◽  
Roberto Crocchiolo ◽  
Sabine Furst ◽  
Stefania Bramanti ◽  
Barbara Sarina ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Stem Cell ◽  
Median Time ◽  
Hematological Malignancies ◽  
Conflicts Of Interest ◽  
Chronic Gvhd ◽  
Conditioning Regimen ◽  
Haploidentical Transplantation ◽  
Post Infusion

Abstract Introduction Transplantation from alternative donors has been used since several years for patients with hematological malignancies lacking of HLA identical donors. The Baltimora group pioneered the use of cyclophosphamide (Cy) after haploidentical unmanipulated (BM) stem cells infusion. BM was chosen to reduce the risk of acute and chronic graft versus host disease (GVHD). PBSC could replace BM, fastening engraftment and immunological reconstitution. However, the risk of GVHD could be higher. We retrospectively analyzed a cohort of patients from two institutions, receiving haploidentical transplantation with nonmyeloablative conditioning regimen (NMA) and PSBC or BM, with post-infusion Cy. Patients and Methods From April 2009 to April 2013, 72 patients with poor prognosis hematological malignancies received haploidentical transplantation. Conditioning regimens consisted of Cy 14.5 mg/kg d -5 and -6, fludarabine 30 mg/m2 d-6 to d-2, and low dose TBI (2 Gy) at d-1. GVHD prophylaxis consisted of Cy 50 mg/kg day +3 and +4, tacrolimus (FK, 1 mg total dose, in continuous infusion) until days +180 (Milan cohort) or cyclosporine (CsA, 3 mg/kg) (Marseille cohort) and MMF (15 mg/kg 3 per day) until day +35. FK, CsA and MMF were started at d +5. G-CSF was started at d +5 in all patients. Donors underwent bone marrow harvest under general anesthesia and a total of 4 x 10e8 nuclear cells per kg of recipient was targeted. Unmanipulated bone marrow was used as stem cell support at d0. In Marseille, donors were mobilized using 5 to 6 days of subcutaneous G-CSF (Neupogen®) (10 mcg/kg/day). A minimum of 4 x 10e6 CD34/kg was harvested. Results The median follow-up was 12 months (range: 1-48). For the population as a whole, the median time to ANC more than 0.5 x 10e9/L was 20 days (14-32) and the median time to transfusion-independent platelet (PLT) count was 29 days (14-52). Engraftment results in the two cohorts of patients (BM vs PBSC) were not significantly different [ANC 21 days (14-32) vs 20 days (14-27), and PLT 29 days (16-46) vs 27 days (14-52)]. Overall, aGVHD 2-4 incidence was 27% and cGVHD was 13%. No difference was founded in the two cohorts: aGVHD 2-4 24% vs 33% and cGVHD 11% vs 17%. The 1-year non relapse mortality was 18% overall, and it was not statistically different even if numerically lower in the PBSC group (22% vs 9%). Conclusion This retrospective study showed that there was not significant differences in terms of hematological reconstitution and both acute and chronic GVHD, using unmanipulated BM and PBSC after NMA conditioning regimen and post-infusion Cy. The 1-year NRM, even if not statistically different, was lower with PBSC. These data warrant confirmation with more patients and longer follow-up. Disclosures: No relevant conflicts of interest to declare.

scholarly journals Post-Transplant Cyclophosphamide Versus MTX-CSA As Gvhd Prophylaxis in HLA-Identical Sibling HSCT

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 3394-3394
Author(s):  
Rebeca Bailén ◽  
Maria-Jesús Pascual ◽  
Pascual Balsalobre ◽  
Anabel Gallardo-Morillo ◽  
Abel García-Sola ◽  
...  
Keyword(s):  
Cumulative Incidence ◽  
Acute Gvhd ◽  
Conflicts Of Interest ◽  
Conditioning Regimen ◽  
High Dose ◽  
Hematopoietic Stem ◽  
Free Survival ◽  
Post Transplant ◽  
Gvhd Prophylaxis

Abstract Background: Post-transplant high dose cyclophosphamide (PT-CY) effectively prevents graft-versus-host disease (GVHD) after HLA-haploidentical hematopoietic stem cell transplantation (HSCT). However, the use of PT-CY in HLA-identical HSCT is less explored. In this study, we analyzed the results of PT-CY as GVHD prophylaxis in HLA-identical sibling HSCT and compared them with those obtained after prophylaxis with methotrexate (MTX) plus cyclosporine (CsA). Methods: 107 HLA-identical sibling (10/10) HSCT from 2 Spanish centers have been analyzed: 50 performed consecutively between 2010 and 2015 using MTX-CsA as GVHD prophylaxis, and 57 performed consecutively between 2014 and 2018 using PT-CY. Results: Baseline characteristics and post-transplant complications are shown in Table 1. GVHD prophylaxis consisted in MTX days +1, +3, +6 and +11, and CsA from day -1 in the MTX-CsA group. The PT-CY group received cyclophosphamide 50 mg/kg/d on days +3 and +5 in 38 patients (65%), combined with CsA from day +5, and cyclophosphamide on days +3 and +4 in 19 patients (35%), followed by CsA and mycophenolate mofetil from day +5. Graft source was PBSC in 96% in the MTX-CsA group and 86% in the PT-CY group. Conditioning regimen was myeloablative in 64% and 40%, respectively. Neutrophil and platelet engraftment was significantly delayed in the PT-CY group (14.5 (11-27) vs 15.5 (13-37), p=0.02; 11.5 (8-180) vs 20.5 (10-43), p=0.02). After a median follow-up of 60 months for the MTX-CsA group and 15 months for the PT-CY group, 2-year overall survival (OS) was 56% (42-70) and 78% (67-90) (p=0.088), and event-free survival (EFS) was 48% (34-62) and 62.5% (42.5-82.5) (p=0.054), respectively. Cumulative incidence at 100 days of grade II-IV (52.2% vs. 22.6%, p=0.0015), and III-IV (24.4% vs. 8.8%, p=0.016) acute GVHD were significantly higher in the MTX-CsA group (Figure 1A). No differences were observed in the 2-year cumulative incidence of chronic moderate to severe GVHD (26% vs. 16.7% (p=0.306)). No differences were observed in the 2-years cumulative incidence of relapse (27% vs. 28% (p=0.47)). Non-relapse mortality (NRM) at 2-years showed a higher trend in the MTX-CsA cohort (24% vs. 8.8%, p=0.054). Finally, the composite endpoint of GVHD and relapse-free survival (GRFS) at 2-years was significantly better in the PT-CY group (48% vs. 24%, p=0.011) (Figure 1B). Conclusions: In our experience, GVHD prophylaxis using PT-CY combined with additional immunosuppression after HLA-identical sibling HSCT, using mostly peripheral blood as graft source, reduced the cumulative incidence of acute GVHD compared to standard prophylaxis with MTX-CsA, leading to an impact on GRFS. To our knowledge, this is the largest comparative retrospective cohort reported. Further prospective studies with longer follow-up are needed to confirm these observations. Disclosures No relevant conflicts of interest to declare.

A Sensitive Replicate RQ-PCR of BCR ABL Transcripts Suggests That A Large Portion of Long Term Post Allogeneic SCT CML Patients Are in Deep MR and May Therefore Be Cured From Their Disease

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 1690-1690
Author(s):  
Maya Koren-Michowitz ◽  
Avichai Shimoni ◽  
Filomena Daraio ◽  
Francesca Crasto ◽  
Roberta Lorenzatti ◽  
...  
Keyword(s):  
Median Time ◽  
Kinase Inhibitor ◽  
Conflicts Of Interest ◽  
Conditioning Regimen ◽  
Chronic Phase ◽  
Disease Status ◽  
Molecular Response ◽  
Transcript Levels

Abstract Abstract 1690 RQ-PCR has become the major method for the follow up of CML pts in the tyrosine kinase inhibitor (TKI) era. In CML pts undergoing allogeneic SCT (Allo-SCT) it has been shown that successive increase in quantitative BCR ABL transcript levels is in correlation with the clinical outcome and may serve as an early sign of disease relapse and an indication for a therapeutic intervention such as the addition of a TKI or DLI. However, the sensitivity of current RQ-PCR methods which is limited to approximately 10−4 in the majority of routine clinical laboratories, do not allow for the detection of very low BCR ABL transcript levels, and therefore RQ-PCR negativity cannot be regarded as CMR in the majority of pts. Studies of replicate RQ-PCR (rRQ-PCR) have shown that the number of measurement repetitions is relevant in the detection of rare transcripts and rRQ-PCR was found to be more sensitive than conventional RQ-PCR in TKI treated CML pts. We evaluated the role of rRQ-PCR in the detection of MRD in a cohort of long term post Allo-SCT CML patients. Samples from 12 CML pts (M=7, F=5), median age 43 y, at a median time of 85 months after SCT (range 28–136) were tested. SCT was myeloablative (n=6) or with RIC (n=6), from a matched sibling (n=7) or a MUD (n=5), in first chronic phase (CP1) (n=8) or at a later phase (n=4). rRQ-PCR was done in 82 replicates using the same conditions of conventional RQ-PCR. Results of rRQ-PCR are given in Table 1. 75% of the patients had negative RQ-PCR in all 82 wells, while 3 patients had positive results in 1 (1.2%), 2 (2.4%) and 6 (7.3%) wells, respectively, which was above the background determined in normal PB samples (6/901 positive wells, 0.66%). The sensitivity of rRQ-PCR was 10−5.5 or higher in all patients. Negative rRQ-PCR result was not related to the phase at SCT (CP1 vs. others), conditioning regimen (myeloablative vs. RIC), donor type (sibling vs. MUD) or the presence of GVHD. Median time from diagnosis to SCT was borderline longer in patients with positive rRQ-PCR results (61 vs. 25 months, p=0.08). Higher sensitivity RQ-PCR methods are able to further define subgroups of post BMT CML pts and allow for a more accurate follow up of MRD. We will present update clinical data at 1 year after rRQ-PCR determination. Table 1. Results of rRQ-PCR. Patient number Disease status at SCT Conditioning Time from diagnosis to SCT (months) Time from SCT to rRQ-PCR (months) rRQ-PCR result BCR ABL/ABL1 (IS) Total quantity of ABL transcripts Level of MR 1 AP RIC 97 57 0 575034.8 MR5.5 2 CP2 MA 6 30 0.0000862 705622.3 3 CP2 MA 273 48 0.0007393 563237.5 4 CP1 RIC 4 52 0 997521.8 MR6 5 CP1 MA 16 34 0 555768.9 MR5.5 6 CP1 MA 39 30 0 700630.1 MR5.5 7 CP1 MA 6 40 0 874247.9 MR5.5 8 CP1 RIC 61 68 0.0000484 1067353 9 CP1 RIC 33 46 0 938046.4 MR5.5 10 CP1 RIC 18 58 0 1467748 MR6 11 AP RIC 6 28 0 776271.9 MR5.5 12 CP2 MA 3 23 0 860350.6 MR5.5 RIC reduced intensity conditioning; MA myeloablative conditioning; MR molecular response. 1 Average result of positive wells normalized to the international standard. PCR positive in 12, 63 and 24 wells of 82 tested. Disclosures: No relevant conflicts of interest to declare.

scholarly journals Improved Outcomes in Patients with Thalassemia Major Transplanted with Peripheral Blood and Marrow Grafts in Comparison with Cord Blood and Bone Marrow Grafts from Sibling Donors

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 847-847
Author(s):  
Qiao chuan Li ◽  
Jian ming Luo ◽  
Zhong ming Zhang ◽  
Lian jin Liu ◽  
Ling ling Shi ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Stem Cell ◽  
Cord Blood ◽  
Graft Rejection ◽  
Peripheral Blood ◽  
Cumulative Incidence ◽  
Conditioning Regimen ◽  
Thalassemia Major ◽  
Matched Sibling

Abstract Background: Thalassemia major (TM) is a fatal genetic disease currently only curable with allogeneic stem cell transplantation. This is limited by the lack of suitable donors and the quantity of collected stem cells, and is often complicated by graft rejection and graft versus host disease (GVHD). Methods: The aim of the study was to compare the outcomes of TM patients transplanted with matched sibling cord blood (CB) and bone marrow (BM) grafts vs. matched sibling peripheral blood (PB) stem cell and BM grafts. The trial was designed as a prospective, open-label, single-center clinical protocol, where 204 TM patients were enrolled between January 2007 and November 2015 and transplanted with either PB + BM (n=99) or CB+BM (n=105), from an HLA-identical sibling donor. This study was approved by the Medical Ethics Committee of the First Affiliated Hospital of Guangxi Medical University and was registered at the Chinese Bone Marrow Transplant Registry (CBMTR). The primary end point was 2-year thalassemia free survival(TFS). Secondary end points included 2-year overall survival (OS), the cumulative incidence of GVHD, transplant related mortality (TRM), graft rejection (GF).The conditioning regimen were:1) busulphan (BU) (1.25 mg/kg) given orally four times per day for 4 days or 1mg/kg given intravenously (IV) four times per day for 4 days (day -9 to day -6); 2) fludarabine (FLU) (50mg/m2/day) given IV for 3 days (day -12 to day -11); 3) cyclophosphamide (CTX) (50 mg/kg/day) given IV for 4 days (day -5 to day -4); 4) anti-thymocytes globulin (ATG, Genzyme ) (2.5 mg/kg/day) given IV for 4 days (days -4 and day -1). All patients were placed on 30 mg/kg hydroxyurea orally once daily for 2-3 months before transplantation.GVHD prophylaxis consisted of a combination of cyclosporin A, methotrexate and mycophenolate mofetil regimen. [BMT 2009; 43(1):61-67]. Results : Patient and donor characteristics, and transplantation outcomes are listed in Tables 1 and 2, respectively. Data cut off for survival follow-up was March 31, 2016. The median follow-up time was 26 months (range, 4 months -105 months). Both neutrophil as well as platelet engraftment occurred significantly faster in the PB+ BM group than the CB+BM group (11 days vs. 13 days, P=0.001 and 15 days vs. 25 days, P=0.001, respectively). The rate of GF was the same in both groups (1.0%). The cumulative incidence of grade II-IV acute (a) GVHD and extensive chronic (c)GVHD in the PB+ BM group was higher than the CB+BM group: aGVHD=15.5% vs 1.0%, P=0.001; cGVHD= 6.4% vs. 0%, P=0.013. The cumulative rates of TRM at 2 years remained significantly lower in the PB+BM group compared to the CB+BM group with 2.0% and 12.5%,(P=0.005), respectively . Both OS and TFS at 2 years favored the PB +BM group compared to the CB+BM group : OS=98% vs. 86.5%,P=0.003;TFS= 97% vs. 86.5%, P=0.008.(Fig 1) Conclusion: Our results demonstrate that grafts composed of PB + BM had superior overall outcomes compared to CB + BM grafts, as evidenced by faster engraftment and lower TRM of the former despite substantially lower aGVHD and cGVHD rates of the latter. The mixed stem cell populaitons and the high cell dose achieved with the use of 2 different graft sources, toghether with the conditioning regimen used likely contributed to the superior outcomes seen with this regiem. This strategy could be of great benefit for the treatment of patient with TM and other benign hematologic disease. Disclosures No relevant conflicts of interest to declare.

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