scholarly journals Clinical Investigation of Stratified Therapy in Childhood Acute Promyelocytic Leukemia

Blood ◽  
2014 ◽  
Vol 124 (21) ◽  
pp. 5286-5286 ◽  
Author(s):  
Yuming Zhang ◽  
Xiaoqing Feng ◽  
Cuiling Wu ◽  
Wenling Guo ◽  
Huiping Li ◽  
...  
Keyword(s):  
High Risk ◽  
Acute Promyelocytic Leukemia ◽  
Risk Group ◽  
Disease Free Survival ◽  
High Risk Group ◽  
Promyelocytic Leukemia ◽  
Free Survival ◽  
Standard Risk ◽  
Disease Free

Abstract OBJECTIVE: The aim of this study was to investigate the clinical biological features, treatment strategy, prognosis and long-term survival in children with acute promyelocytic leukemia（APL）. Focus on the effect of stratified therapy in childhood APL. METHODS: The clinical data of 42 cases of APL with t (15;17) from April 2004 to December 2012 were analyzed retrospectively. Patients were stratified into three risk-group based on white blood cell count and platelet count at diagnosis: standard, intermediate and high-risk group. Induction treatment consisted of all-trans retinoic acid（ATRA）and Idarubicin（IDA）), followed by multi-drug chemotherapy consolidation and a long term maintenance therapy including ATRA,6-Mercaptopurine（6-MP), Methotrexate（MTX）. The complete remission (CR) rate, overall survival (OS) rate, disease free survival (DFS) rate, hematologic and cytogenetic cumulative incidence of relapse (CIR) were compared among the three groups, the stratified therapy in childhood APL and its correlation with clinical prognosis was analyzed. The statistical analyses were performed by SPSS. RESULTS: 42 patients were enrolled (median age 5.8 years, range 1.5-14, 64% males and 36% females), 11 in standard-risk group, 18 in intermediate-risk group, 13 in high-risk group. Immunophenotyping analysis indicated that MPO, CD33, CD13 and CD117 were commonly expressed antigens while HLA-DR and CD34 were mostly the negative markers on APL cells. Of the 42 patients receiving treatment, 38 children (90.5%) achieve complete remission. 1 patient from the high risk group died of intracranial hemorrhage, 1 patient from the Standard Risk group died of anthracycline cardiotoxicity, 1 patient from the intermediate group died of severe infection. The estimated overall survival (OS) rates at 3 and 5 years were （74.2±6.7%）and（70±7.4%）respectively, the disease free survival (DFS) rates were（71±3.8%）and（57±8.1%）respectively. The 3 and 5-year cumulative incidence of relapse (CIR) were 18% and 27%. OS for three groups were (86±7.4%),（71±4、8%）and（57±4.7%）respectively, the 5-year DFS were (82±6.3%), (61±5.3%)and(50±7.2%) and 5-year CIR were 6.7%、18%、35%.There were significant differences in 5-year OS, DFS and CIR rates of three groups (P< 0.05). CONCLUSION: The results indicated that ATRA combined with Anthracycline is effective and safe for treatment of newly diagnosed childhood APL. Prognosis of childhood APL was associated with clinical types. It indicates that stratified therapy according to different risk group can improve the OS and EFS rate and decrease the CIR rate while minimizing chemotherapy-related toxicity. Now, real-time quantitative polymerase chain reaction (RQ-PCR), which can performed to detect PML-RARα fusion transcripts, has become an important means for minimal residual disease (MRD) assays, but it is rarely used in children. Compared with RQ-PCR, clinical risk-adapted classification is a simple, validated and highly predictive index for the determination of stratified therapy in childhood acute promyelocytic leukemia. Disclosures No relevant conflicts of interest to declare.

A randomized study with or without intensified maintenance chemotherapy in patients with acute promyelocytic leukemia who have become negative for PML-RARα transcript after consolidation therapy: The Japan Adult Leukemia Study Group (JALSG) APL97 study

Blood ◽  
2007 ◽  
Vol 110 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Norio Asou ◽  
Yuji Kishimoto ◽  
Hitoshi Kiyoi ◽  
Masaya Okada ◽  
Yasukazu Kawai ◽  
...  
Keyword(s):  
Complete Remission ◽  
Acute Promyelocytic Leukemia ◽  
Randomized Study ◽  
Disease Free Survival ◽  
Promyelocytic Leukemia ◽  
Consolidation Therapy ◽  
Maintenance Chemotherapy ◽  
Free Survival ◽  
Significant Difference ◽  
Disease Free

To examine the efficacy of intensified maintenance chemotherapy, we conducted a prospective multicenter trial in adult patients with newly diagnosed acute promyelocytic leukemia treated with all-trans retinoic acid and chemotherapy. Of the 302 registered, 283 patients were assessable and 267 (94%) achieved complete remission. Predicted 6-year overall survival in all assessable patients and disease-free survival in patients who achieved complete remission were 83.9% and 68.5%, respectively. A total of 175 patients negative for PML-RARα at the end of consolidation were randomly assigned to receive either intensified maintenance chemotherapy (n = 89) or observation (n = 86). Predicted 6-year disease-free survival was 79.8% for the observation group and 63.1% for the chemotherapy group, showing no statistically significant difference between the 2 groups (P = .20). Predicted 6-year survival of patients assigned to the observation was 98.8%, which was significantly higher than 86.2% in those allocated to the intensified maintenance (P = .014). These results indicate that the intensified maintenance chemotherapy did not improve disease-free survival, but rather conferred a significantly poorer chance of survival in acute promyelocytic leukemia patients who have become negative for the PML-RARα fusion transcript after 3 courses of intensive consolidation therapy.

scholarly journals Effect of Chemotherapy With Docetaxel With Androgen Suppression and Radiotherapy for Localized High-Risk Prostate Cancer: The Randomized Phase III NRG Oncology RTOG 0521 Trial

2019 ◽  
Vol 37 (14) ◽  
pp. 1159-1168 ◽  
Author(s):  
Seth A. Rosenthal ◽  
Chen Hu ◽  
Oliver Sartor ◽  
Leonard G. Gomella ◽  
Mahul B. Amin ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
High Risk ◽  
Distant Metastasis ◽  
Disease Free Survival ◽  
Free Survival ◽  
High Risk Prostate Cancer ◽  
Risk Prostate Cancer ◽  
Androgen Suppression ◽  
Disease Free

PURPOSE Radiotherapy (RT) plus long-term androgen suppression (AS) are a standard treatment option for patients with high-risk localized prostate cancer. We hypothesized that docetaxel chemotherapy (CT) could improve overall survival (OS) and clinical outcomes among patients with high-risk prostate cancer. PATIENTS AND METHODS The multicenter randomized NRG Oncology RTOG 0521 study enrolled patients with high-risk nonmetastatic disease between 2005 and 2009. Patients were randomly assigned to receive standard long-term AS plus RT with or without adjuvant CT. RESULTS A total of 612 patients were enrolled; 563 were evaluable. Median prostate-specific antigen was 15.1 ng/mL; 53% had a Gleason score 9 to 10 cancer; 27% had cT3 to cT4 disease. Median follow-up was 5.7 years. Treatment was well tolerated in both arms. Four-year OS rate was 89% (95% CI, 84% to 92%) for AS + RT and 93% (95% CI, 90% to 96%) for AS + RT + CT (hazard ratio [HR], 0.69; 90% CI, 0.49 to 0.97; one-sided P = .034). There were 59 deaths in the AS + RT arm and 43 in the AS + RT + CT arm, with fewer deaths resulting from prostate cancer in the AS + RT + CT arm versus AS + RT (23 v 16 deaths, respectively). Six-year rate of distant metastasis was 14% for AS + RT and 9.1% for AS + RT + CT, (HR, 0.60; 95% CI, 0.37 to 0.99; two-sided P = .044). Six-year disease-free survival rate was 55% for AS + RT and 65% for AS + RT + CT (HR, 0.76; 95% CI, 0.58 to 0.99; two-sided P = .043). CONCLUSION For patients with high-risk nonmetastatic prostate cancer, CT with docetaxel improved OS from 89% to 93% at 4 years, with improved disease-free survival and reduction in the rate of distant metastasis. The trial suggests that docetaxel CT may be an option to be discussed with selected men with high-risk prostate cancer.

Adjuvant cyclophosphamide, doxorubicin, and cisplatin chemotherapy for bladder cancer: an update.

1988 ◽  
Vol 6 (10) ◽  
pp. 1590-1596 ◽  
Author(s):  
C J Logothetis ◽  
D E Johnson ◽  
C Chong ◽  
F H Dexeus ◽  
A Sella ◽  
...  
Keyword(s):  
High Risk ◽  
Adjuvant Chemotherapy ◽  
Primary Tumor ◽  
Disease Free Survival ◽  
Nodal Metastases ◽  
Pathological Findings ◽  
Free Survival ◽  
Prognostic Features ◽  
Disease Free

Seventy-one patients received adjuvant Cytoxan (cyclophosphamide; Bristol-Myers Co, Evansville, IN), Adriamycin (doxorubicin; Adria Laboratories, Columbus, OH), and cisplatin (CISCA) chemotherapy between March 1981 and March 1986. Patients received adjuvant CISCA chemotherapy if they had pathological findings that were thought to predict for high likelihood of relapse. These included the presence of resected nodal metastases, extravesicular involvement of tumor, lymphatic/vascular permeation of the primary tumor, or pelvic visceral invasion. Sixty-two patients at a similar high risk for recurrence did not receive adjuvant CISCA chemotherapy because they refused, had medical contraindications to therapy, or were not referred for chemotherapy. Two-hundred six patients had a cystectomy performed during the same study period but had none of the poor prognostic features suggesting a high risk for relapse. Sixty-two percent of the patients receiving adjuvant chemotherapy are alive and disease-free for a mean follow-up of 118 weeks (range, 28 to 310 weeks). A survival advantage exists for the adjuvant-treated patients when compared with those with unfavorable pathological findings who did not receive adjuvant chemotherapy (70% v 37%) (P = .00012): no difference exists in long-term disease-free survival for those with favorable pathological findings (long-term disease-free survival 76%) v those who received adjuvant chemotherapy (70%) (P = .33). Adjuvant CISCA chemotherapy prolongs the disease-free survival of some patients following a cystectomy. Patients who benefitted from adjuvant CISCA chemotherapy included those with resected nodal metastases, extra-vesicular involvement of tumor, and direct invasion of the pelvic viscera. Patients not benefitting from adjuvant CISCA chemotherapy in this analysis included those with lymphatic/vascular invasion in their primary tumor as the sole manifestation of high risk for relapse.

Efficacy and tolerability of adjuvant therapy in ≥70-year-old patients with T3N0M0 colorectal cancer: An observational study

2019 ◽  
Vol 26 (3) ◽  
pp. 619-631
Author(s):  
Abdullah Sakin ◽  
Nurgul Yasar ◽  
Suleyman Sahin ◽  
Serdar Arici ◽  
Saban Secmeler ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Overall Survival ◽  
Lymph Node ◽  
High Risk ◽  
Adjuvant Chemotherapy ◽  
Risk Group ◽  
Disease Free Survival ◽  
Old Patients ◽  
Free Survival ◽  
Disease Free

Background This study aimed to retrospectively investigate the efficacy and tolerability of adjuvant chemotherapy in ≥70-year-old patients with stage IIA (T3N0M0) colorectal cancer. Methods Lymphovascular invasion, perineural invasion, margin positivity, dissected lymph node count of <12, and presence of perforation/obstruction were accepted as risk factors. Those patients with at least one risk factor were regarded as having high risk. Results The study included 168 patients, among which 95 (56.5%) were male and 73 (43.5%) were female. The median age of patients was 73 years (range: 70–94). One hundred one (60.1%) patients were identified to have high risk. Eighty-one (87%) patients received 5-flourouracil+leucovorin and 12 (13%) patients received capecitabine regimens as adjuvant chemotherapy. The patients receiving capecitabine regimen had significantly higher rates of dose reduction at initiation and during the treatment. Among low-risk group, there was no statistically significant difference between patients with and without adjuvant chemotherapy in terms of disease-free survival or overall survival (p = 0.528 and p = 0.217, respectively). In high-risk group, patients receiving adjuvant chemotherapy significantly differed from those not receiving adjuvant chemotherapy in terms of median disease-free survival and overall survival (p = 0.009 and p < 0.001, respectively). While the grade, lymph node status, and adjuvant chemotherapy were identified as the most significant independent factors for disease-free survival, the most significant factors for overall survival were the age, Eastern Cooperative Oncology Group performance status, adjuvant chemotherapy, and recurrence. Conclusion The findings of our study showed improved disease-free survival and overall survival in high-risk ≥70-year-old patients who received adjuvant chemotherapy due to T3N0M0 colorectal cancer. We believe that 5-flourouracil+leucovorin or capecitabine regimens should be recommended for these older high-risk patients who could receive adjuvant chemotherapy regardless of age.

Two Cycles of Risk-Adapted Consolidation Leads to a Favorable Long-Term Prognosis in Patients with Acute Promyelocytic Leukemia After Standard AIDA Induction: Results From 141 Patients Treated in the SAL-AIDA-2000 Trial

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 765-765 ◽  
Author(s):  
Uwe Platzbecker ◽  
Ulrich Schuler ◽  
Martin Bornhäuser ◽  
Michael Kramer ◽  
Markus Schaich ◽  
...  
Keyword(s):  
High Risk ◽  
Acute Promyelocytic Leukemia ◽  
Promyelocytic Leukemia ◽  
Induction Treatment ◽  
Term Survival ◽  
Consolidation Treatment ◽  
High Risk Patients ◽  
Risk Patients ◽  
Disease Free

Abstract Abstract 765 Background: The combination of ATRA and idarubicin (AIDA) for induction therapy of acute promyelocytic leukemia (APL) yields complete remission (CR) rates of > 90%. If this is followed by intensive consolidation treatment, about 85% of patients are disease free and alive after 6 years. In fact, three cycles of consolidation treatment are considered the therapeutic standard; however, it is unclear how much treatment intensity is necessary for long-term survival. In order to address this question, we analyzed the clinical course of patients enrolled into the APL study of the German Study Alliance Leukemia (SAL), which contained only two courses of consolidation. Patients and Methods: All patients ≥ 18 years diagnosed with cytogenetically confirmed APL were eligible for inclusion in the risk-adapted SAL-AIDA-2000 trial. Enrolled patients received standard induction treatment with ATRA (45 mg/m2/d until CR) and idarubicin (12 mg/m2 for 4 doses every other day). After CR, non-high-risk patients (WBC ≤ 10,000/μL) received daunorubicin (45/60 mg/m2 days 1–3, dose depending on age) as first consolidation and mitoxantrone (10 mg/m2 days 2–4) as second consolidation. High-risk patients received additional cytarabine in both consolidation cycles (100/200 mg/m2 continuous infusion over 7 days in 1st consolidation and 1000/3000 mg/m2 twice daily on 4 days in 2nd consolidation, dose depending on age). After 2 cycles of consolidation, all patients were scheduled for 24 months of maintenance with 6-mercaptopurin (90 mg/m2 daily), methotrexate (15 mg/m2 weekly), and ATRA (45 mg/m2 for 15 days every 3 months). The following outcomes were analyzed: CR rate, induction deaths, disease-free survival (DFS), and overall survival (OS). Results: Between January 1999 and October 2010, 141 patients were enrolled in the trial. The median age at diagnosis was 51 years (range, 19–82), and 41 (29%) patients had a WBC >10,000/μL (high risk). The CR rate was 92% in the entire cohort; 95% in patients ≤ 60 and 86% in patients > 60 years (p=0.082). No significant differences in CR rates were seen between high-risk and non-high-risk patients (88% vs 94%, p=0.213). Three patients died during induction treatment (2%). After a median follow up of 55 months, the median DFS and OS were not reached. The estimated 6-year DFS was 80% (95%–CI 72%–88%) in all patients; 84% in patients ≤ 60 and 72% in patients > 60 years (p=0.140). The estimated 6-year OS was 77% in all patients; 84% (95%–CI 76%–92%) in the younger and 62% (95%–CI 47%–78%) in the elderly group (p=0.004). No significant survival differences between the high-risk and the non-high-risk patients were observed, neither for DFS (6-year DFS 78% (95%–CI 64–93%) vs 81% (95%–CI 72%–91%), p=0.625) nor for OS (6-year OS 71% (95%–CI 57%–86%) vs 79% (95%–CI 70–89), p=0.207). Conclusions: Our results confirm the efficacy of a risk-adapted approach both in high-risk and non-high-risk APL patients. The similarity for DFS and OS times between these two groups demonstrate the efficacy of cytarabine added to anthracyclines during consolidation in high-risk patients. Both CR rates and survival outcomes are comparable to the results obtained in the AIDA0493 and AIDA2000 trials by the GIMEMA group, which used three cycles of higher-dosed consolidation. In light of the data, modification in number and intensity of consolidation cycles may result in a less toxic but equally effective option for the treatment of APL and should be considered for further evaluation in a randomized clinical trial. Disclosures: No relevant conflicts of interest to declare.

scholarly journals Arsenic trioxide improves event-free and overall survival for adults with acute promyelocytic leukemia: North American Leukemia Intergroup Study C9710

Blood ◽  
2010 ◽  
Vol 116 (19) ◽  
pp. 3751-3757 ◽  
Author(s):  
Bayard L. Powell ◽  
Barry Moser ◽  
Wendy Stock ◽  
Robert E. Gallagher ◽  
Cheryl L. Willman ◽  
...  
Keyword(s):  
Arsenic Trioxide ◽  
Acute Promyelocytic Leukemia ◽  
Disease Free Survival ◽  
Promyelocytic Leukemia ◽  
Rank Test ◽  
Consolidation Therapy ◽  
Free Survival ◽  
End Point ◽  
To Receive ◽  
Disease Free

Abstract Arsenic trioxide (As2O3) is a highly effective treatment for patients with relapsed acute promyelocytic leukemia (APL); its role as consolidation treatment for patients in first remission has not been defined. We randomized 481 patients (age ≥ 15 years) with untreated APL to either a standard induction regimen of tretinoin, cytarabine, and daunorubicin, followed by 2 courses of consolidation therapy with tretinoin plus daunorubicin, or to the same induction and consolidation regimen plus two 25-day courses of As2O3 consolidation immediately after induction. After consolidation, patients were randomly assigned to one year of maintenance therapy with either tretinoin alone or in combination with methotrexate and mercaptopurine. Ninety percent of patients on each arm achieved remission and were eligible to receive their assigned consolidation therapy. Event-free survival, the primary end point, was significantly better for patients assigned to receive As2O3 consolidation, 80% compared with 63% at 3 years (stratified log-rank test, P < .0001). Survival, a secondary end point, was better in the As2O3 arm, 86% compared with 81% at 3 years (P = .059). Disease-free survival, a secondary end point, was significantly better in the As2O3 arm, 90% compared with 70% at 3 years (P < .0001). The addition of As2O3 consolidation to standard induction and consolidation therapy significantly improves event-free and disease-free survival in adults with newly diagnosed APL. This trial was registered at clinicaltrials.gov (NCT00003934).

Single-Agent Arsenic Trioxide in the Treatment of Newly Diagnosed Acute Promyelocytic Leukemia: Long-Term Follow-Up Data

2010 ◽  
Vol 28 (24) ◽  
pp. 3866-3871 ◽  
Author(s):  
Vikram Mathews ◽  
Biju George ◽  
Ezhilarasi Chendamarai ◽  
Kavitha M. Lakshmi ◽  
Salamun Desire ◽  
...  
Keyword(s):  
Arsenic Trioxide ◽  
Acute Promyelocytic Leukemia ◽  
Risk Group ◽  
Single Agent ◽  
Promyelocytic Leukemia ◽  
Newly Diagnosed ◽  
Free Survival ◽  
Long Term Follow Up

Purpose We previously reported our results with a single-agent arsenic trioxide (ATO) –based regimen in newly diagnosed cases of acute promyelocytic leukemia (APL). The concern remained about the long-term outcome of this well-tolerated regimen. We report our long-term follow-up data on the same cohort. Patients and Methods From January 1998 to December 2004, 72 patients with PML/RARα+ APL were enrolled. All patients were treated with a single-agent ATO regimen. Results Overall 62 (86.1%) achieved a hematologic remission (complete remission). After the initial report, an additional seven patients have relapsed for a total of 13 relapses. There were no additional toxicities to report on follow-up. At a median follow-up 60 months, the 5-year Kaplan-Meier estimate (± SE) of event-free survival, disease-free survival, and overall survival (OS) was 69% ± 5.5%, 80% ± 5.2%, and 74.2% ± 5.2%, respectively. The OS in the good risk group as defined by us remains 100% over this period. Conclusion Single-agent ATO as used in this study in the management of newly diagnosed cases of APL is safe and is associated with durable responses. Results in the low-risk group are comparable to that reported with conventional therapy while additional interventions would probably be required in high-risk cases.

scholarly journals Outcomes of AML Patients Undergoing Reduced Intensity Allogeneic Stem Cell Transplantation with Adverse Risk Disease By European Leukemianet Classification: A Single Center Retrospective Analysis

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 5723-5723
Author(s):  
Zane Chiad ◽  
Clark Alsfeld ◽  
Robert Collins ◽  
Brion Randolph ◽  
Georges Nahhas ◽  
...  
Keyword(s):  
High Risk ◽  
Older Patients ◽  
Disease Free Survival ◽  
Single Center ◽  
Relapse Free Survival ◽  
Free Survival ◽  
Disease Free ◽  
Reduced Intensity ◽  
Risk Of Relapse

Background: Acute myeloid leukemia (AML) is the most common acute leukemia in adults with a median age at diagnosis of close to 70 years. (Juliusson G, et al. Blood, 2011;119(17):3890-3899) The majority of patients with AML require allogeneic stem cell transplant (Allo-SCT) in order to achieve cure. European LeukemiaNET (ELN) published risk stratifications for AML patients according to cytogenetics in 2010 and then updated risk categories in 2017 to incorporate molecular abnormalities as well. The ELN adverse risk category predicts for a higher risk of relapse and worse overall survival (OS) compared to favorable and intermediate risk patients. (Döhner H, et al. Blood, 2017;129(4):424-447) Older patients are more likely than younger patients to have adverse risk disease. (Mrozek K, et al. JCO, 2012;30(36):4515-4523). In addition, older patients are typically not considered for myeloablative conditioning (MAC) regimens due to the high risk of non-relapse mortality (NRM). Thus, a significant proportion of AML patients who are candidates for Allo-SCT have adverse risk disease by ELN criteria and are only candidates for RIC Allo-SCT, both of which increase the risk of relapse. A recent randomized trial in AML and MDS patients noted a trend toward improved OS and statistically significant improvement in relapse free survival (RFS) favoring MAC over RIC (Scott BL, et al. JCO, 2017; 35(11): 1154-1161). Despite this, studies have shown durable remissions and long term disease free survival with RIC Allo-SCT in AML patients with high risk features. (Tauro S, et al. JCO, 2005; 23(36):9387-9393) However, to our knowledge no study has investigated the use of RIC Allo-SCT exclusively in patients who have adverse risk by 2017 ELN criteria. Thus, we reviewed AML patients with adverse risk disease by 2017 ELN criteria at diagnosis who underwent RIC Allo-SCT at our institution. Methods: We conducted a single center retrospective study of high risk adult AML patients by ELN criteria who underwent RIC Allo-SCT at MUSC from 3/20/2010 to 2/20/2018. Adverse risk disease was defined by the 2017 ELN criteria. Baseline demographic, clinical, laboratory, pathology, and outcomes data were collected by retrospective chart review. Kaplan Meier was utilized for time to event analysis. Results: A total of 42 patients with adverse risk AML received RIC Allo-SCT. The median follow up was 16.6 months. Clinical characteristics were collected for each patient and are included in table 1. The median age was 62 with 16 patients (38%) ≥ 65 years of age. Twenty-three patients had a HCT-CI score ≥ 3 (54%) with 9 patients (21%) having a HCT-CI score ≥ 5. Complete remission (CR) was defined as bone marrow blasts < 5% without known molecular evidence of persistent/relapsed AML. CR and CR with incomplete count recovery (CRi) was not able to be defined. Thirty-one patients (73%) were in CR1 at transplant, 7 patients (16%) were in CR2+ defined as CR necessitating ≥ 2 treatment regimens. Four patients (9%) never achieved a CR and were labelled as primary induction failure (PIF), and one patient (3%) received prior MAC Allo-SCT before receiving RIC Allo-SCT and was labeled as Relapse. Four of the five patients with disease status of PIF or relapse were deceased within 13 months of Allo-SCT. The non-relapse mortality (NRM) at 1 year was 26.2%. Relapse-free survival (RFS) at 1, 2, and 3 years was 57.1%, 45.2%, and 35.7% respectively. The overall survival (OS) at 1, 2, and 3 years was 66.7%, 50.0%, and 40.5% respectively. A subset analysis of the patients in CR1 or CR2+ prior to RIC-Allo SCT noted a NRM at 1 year of 27% along with a RFS at 1, 2, and 3 years of 59.5%, 48.7%, and 40.5% respectively. Cause of death included relapse (33%), infection (29%), acute GVHD (25%), and chronic GVHD (3%). Conclusion: This provides evidence that although adverse risk disease by ELN criteria and reduced intensity conditioning both increase the incidence of relapse in patients with AML, that RIC Allo-SCT for this high risk patient population can provide long term disease free survival. In addition, the favorable outcomes for patients in CR1 and CR2+ prior to RIC-Allo are promising. It would be interesting to investigate a larger multi-center series of patients with adverse risk disease by ELN in CR prior to RIC Allo-SCT. Minimal residual disease by myeloid molecular panel and/or flow in this patient population prior to transplant would be of great interest as well. Disclosures Edwards: Genzyme: Consultancy.

The Effect of HLA-Cw in Haploidentical Stem Cell Transplantation.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 5147-5147
Author(s):  
Mingzhen Yang ◽  
De Pei Wu ◽  
Ying Wang ◽  
Xiaojin Wu
Keyword(s):  
Body Weight ◽  
Stem Cell ◽  
High Risk ◽  
Stem Cell Transplantation ◽  
Disease Free Survival ◽  
Free Survival ◽  
Matched Group ◽  
Cd34 Cells ◽  
Standard Risk ◽  
Disease Free

Abstract Allogeneic hematopoietic stem cell transplantation (Allo-HSCT) is a potential curative treatment for patients with malignant hematological disease. However Allo-HSCT limited by the availability of a suitably matched donor. With only 30–40% of patients having a matched-related donor available, haploidentical transplantation may increase the applicability of Allo-HSCT. The high incidence of severe GVHD is a barrier of the application of haploidentical HSCT. KIR ligand was HLA-Cw or HLA-Bw4.in our study, we detected HLA-Cw loci gene of donors and receipts with PCR-SSP who received haploidentical-HSCT. 21 patients with malignant hematologic disease, age 9–47 (median 24 year), who needed urgent transplant but neither HLA-identical sibling donors nor HLA-matched unrelated donors available, received non-T cell depleted haploidentic HSCT between July, 2002 to March 2006. patients were classified as follows AML 7 (standard risk 3, high risk 4), ALL6 (standard risk 2, high risk 4), CML 8 (4 in CP, 4 in AP or BP). All donors were HLA-haploidentical relatives who had at least two major histocompatibility complex antigen mismatched with the recipients including offspring, sibling and mother. All patients underwent haplo-HSCT with G-CSF primed BM or PB as stem cells. donors received G-CSF(300ug/12h×5d) from −5d, bone marrow cells were collected at −2d, PBSC were collected at −1d if CD34+ cells less than 4×106/kg of recipient’s body weight. The CD34+ cells in graft of HLA-Cw matched group were (5.43±1.59)×106/kg of recipient’s body weight. HLA-Cw mismatched group were (6.54±1.53)×106/kg of recipient’s body weight(P&gt;0.05). CD3+T cells in graft of HLA-Cw matched group were (0.46±0.08)×108/kg of recipient’s body weight. HLA-Cw mismatched group were (1.89±1.15) ×108/kg(P&lt;0.05). Recipients were prepared for transplantation with different conditioning regimens according to the type of disease. Myeloid leukemia regimen: MeCCNU 250mg/m2 −10d, Ara-C 2g/m2 q12h, from −9d to −8d, Bu 4mg/kg, from −7d to −5d, Cy 1.8g/m2.d, from −4d to −3d. Lymphoblastic leukemia regimen: MeCCNU 250mg/m2 −8d, Total-body irradiation(TBI) 8Gy −7d, Ara-C 2g/m2 q12h, from −6d to −5d, Cy 1.8g/m2.d, from −4d to −3d. All the patients were given hydration, alkalization, and given mesna to prevent hemorrhage cystitis. All patients received GVHD prophylaxis consisting of Cyclosporine(CSA), Methotrexate(MTX), Mycophenolate mofetil(MMF) and antithymocyle globulin(ATG). When GVHD developed, methylprednisolone(MP) was given at first, if the response was poor, anti-CD25 antibody was given to the recipients as quickly as possible and CSA was replaced with tacrolimus. 20 patients achieved sustained, full-donor-type engraftment. the HLA-Cw matched group and mismatched group attained successful neutrophil recovery at a median of 12 days and 13 days, recovery of platelet counts of more than 20×109/L was observed at a median of 20 days and 23 days. Between the two groups were no differences in engraftment. The cumulative incidence of grades II-IV acute GVHD were 77% in HLA-Cw matched group and 14.3% in HLA-Cw mismatched group(P&lt;0.05). 36 months disease-free survival probabilities was 46.2% in HLA-Cw matched group, 28 months disease-free survival probabilities was 85.7% in HLA-Cw mismatched group. The Karnofsky clinical performance status of survival patients was over 90%. In conclusion, HLA-Cw mismatched in donor and receipt of haploidentical SCT was benefited to reducing II–IV aGVHD, and it was in favor of long term survival.

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