Post-Remission Therapy with Imatinib and HAM Improve MRD before Tansplant for Patients with Philadelphia-Positive Acute Lymphoblastic Leukemia (Ph+ALL): Results of the GRAALL AFR03 Study.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 1877-1877
Author(s):  
Thibaut Leguay ◽  
Francis Witz ◽  
Stéphane De Botton ◽  
Jean Gabert ◽  
Jean-Michel Cayuela ◽  
...  
Keyword(s):  
Cumulative Incidence ◽  
Residual Disease ◽  
Lymphoblastic Leukemia ◽  
Disease Free Survival ◽  
High Dose Chemotherapy ◽  
Autologous Stem Cell Transplant ◽  
High Dose ◽  
Cell Transplant ◽  
Molecular Remission ◽  
Before And After

Abstract Combination of Imatinib with chemotherapy has been reported as very promising for patients with Ph+ ALL. In this study, we attempted to minimize the MRD (Minimal Residual Disease) level before transplant for Ph+ ALL by combining Imatinib with HAM (HAMI). This regimen consisted to Cytarabine 2g/m2/12 hours between day1 and day4, Mitoxantrone 10mg/m2/day between day1 and day3 combinated with Imatinib (3 different doses) between day1 and day45. MRD was studied by RT-PCR at day1 (before treatment) and day45 (after treatment) and was exprimed by BCR-ABL/ABL levels. Between April 2002 and September 2005, 36 patients in complete remission (CR) after induction chemotherapy have been analysed. This group consisted of 13 females and 23 males with a median age of 42 years (19–60). Three doses of Imatinib (400 mg, 600 mg and 800 mg/day) have been tested for six patients in each cohort (the first eighteen patients). After an intermediate analysis, the dose of 800 mg per day has been shown to be toxic (one grade IV hypokaliemia), and a last cohort of 18 patients were treated with 600 mg/day. No toxic-death related to HAMI regimen was reported. Thirthy-one patients could be studied for MRD before and after HAMI consolidation. Four patients were in molecular remission (level of BCR-ABL/ABL<10−5) before treatment and 12 after. No difference between 3 cohorts of dose was observed. The median level of MRD was 10−3 (0–0.7) and 3 × 10−5 (0–0.004) before and after treatment respectively (p=0.0015). After a median follow-up of two years and for all patients, the estimated overall survival (OS) and disease free survival were respectively of 71% (51%–84%) and 52% (32%–69%). The cumulative incidence of relapse and the cumulative incidence of death in CR were respectively of 15% (6%–32%) and 31% (17%–52%). Twenty patients had allogenic matched transplantation (thirteen related, seven unrelated) and composed the group with donor. In this first group, seven patients obtained MRD negativity after HAMI treatment. The others sixteen patients composed the second group of patients without donor or older than 55 years. In this second group, eleven patients received autologous stem-cell transplant followed by imatinib for nine of them, and five received imatinib in maintenance with or without chemotherapy. In this group, six patients had obtained MRD negativity after HAMI. The two-years OS was identical for patients with or without donor (71%). In conclusion, imatinib combined with high dose chemotherapy improved molecular remission before transplantation and lead to an improve outcome.

Is Rituximab Needed With High Dose Chemotherapy and Autologous Stem Cell Transplant When Patients With Non-Hodgkin’s Lymphoma Have Been Exposed To It?

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 5552-5552
Author(s):  
Zartash Gul ◽  
Stephan Anderson ◽  
Stacey Slone ◽  
Saurabh Chhabra ◽  
Gregory Monohan ◽  
...  
Keyword(s):  
Research Funding ◽  
Cell Lymphoma ◽  
Disease Free Survival ◽  
High Dose Chemotherapy ◽  
Autologous Stem Cell Transplant ◽  
High Dose ◽  
Cell Transplant ◽  
Free Survival ◽  
Disease Free

Abstract Introduction The value of Rituximab with High dose chemotherapy and autologous stem cell transplant (auto-HCT) has been evaluated in some retrospective studies. It is noted that the addition Rituximab to auto-HCT results in significant improvement in overall (OS) and disease free survival (DFS). However, it is unclear that the addition of Rituximab with auto-HCT would result in significant benefit in patients who have received prior Rituximab based therapy. Methods We retrospectively evaluated twenty seven consecutive patients who had B cell non-Hodgkin's lymphoma (NHL) and underwent auto- HCT at Markey cancer center between January 2010 and December 2012. All patients received 375 mg/m2of Rituximab with chemotherapy. Rituximab was not administered with high dose chemotherapy (BEAM: BCNU, Etoposide, Cytarabine and Melphalan) prior to auto-HCT. All patients received GCSF starting day 5 after auto-HCT. Results There were 27 patients who underwent auto-HCT for NHL. Median age of the patients was 60 years (36-72 years). Nineteen patients were male and 8 patients were female. Fifteen patients were in complete remission (CR) and the rest were in partial remission (PR). Patients had: Diffuse large B cell lymphoma (DLBCL=11 patients): Mantle cell lymphoma (MCL=13 patients): follicular lymphoma (3 patients). Median CD 34 count of infused cells was 4.14 x 106 cell/kg (2.26- 9.45). Median time to neutrophil recovery was 11 days (9-14). Median lymphocyte count at day 30 after auto HCT was 1130 x 10 6/l (320- 5180). After a median follow up of 7.9 months (3.0- 32.4) eight patients had relapsed. Five patients who had relapsed had refractory disease before auto-HCT. Non -Relapse mortality (NRM) is shown in figure 1. Median overall survival and disease free survival were not reached. Seventy percent patients had not relapsed. We did not find any factors associated with relapse. Conclusion We performed a retrospective study to evaluate the impact of Rituximab with high dose chemotherapy and in patients with NHL. Review of literature showed that median 2 year and 5 year OS was 80% and 69% in patients who received Rituximab with auto HCT. Median 2 year DFS was 67%. In our study 70% patients were relapse free at a median follow up of 8 months. We would need a longer follow up to determine the efficacy of Rituximab with auto- HCT in patients with NHL who had prior exposure to Rituximab. Disclosures: Off Label Use: The use of Thymoglobulin® for GVHD prevention. Hayslip:Sanofi: Research Funding; Janssen: Research Funding; Pfizer: Research Funding; Celgene: Research Funding.

scholarly journals Management of adult Ph-positive acute lymphoblastic leukemia

Hematology ◽  
2015 ◽  
Vol 2015 (1) ◽  
pp. 406-413 ◽  
Author(s):  
Sabina Chiaretti ◽  
Robin Foà
Keyword(s):  
Stem Cell ◽  
Acute Lymphoblastic Leukemia ◽  
Kinase Inhibitors ◽  
Stem Cell Transplant ◽  
Residual Disease ◽  
Lymphoblastic Leukemia ◽  
Disease Free Survival ◽  
The Elderly ◽  
Autologous Stem Cell Transplant ◽  
Cell Transplant

Abstract Philadelphia-positive acute lymphoblastic leukemia (Ph+ ALL) has been regarded for decades as the ALL subgroup with the worse outcome. It represents the most frequent genetic subtype of adult ALL, and increases progressively with age. The introduction of tyrosine kinase inhibitors (TKIs) has enabled to obtain complete hematologic remissions (CHRs) in virtually all patients, including the elderly, to improve disease-free survival and overall survival, as well as to increase the percentage of patients who can undergo an allogeneic stem cell transplant (allo-SCT). The current management of adult Ph+ ALL patients relies on the use of a TKI with or without chemotherapy followed by an allo-SCT, which still remains the only curative option. Minimal residual disease screening is permitting not only a better stratification of patients, but has also allowed to reconsider the role of autologous stem cell transplant for a set of patients who do not have a donor or are not eligible for an allo-SCT. At present, clinical challenges are represented by the emergence of resistant mutations, particularly the gatekeeper T315I, for which alternative approaches, comprising novel TKIs or therapies based on the combination of TKI with immunotherapeutic strategies, are being considered in order to overcome resistance.

High dose chemotherapy with autologous stem cell transplant for patients with transformed B-cell non-Hodgkin lymphoma in the rituximab era

2014 ◽  
Vol 55 (10) ◽  
pp. 2319-2327 ◽  
Author(s):  
Yngvild N. Blaker ◽  
Marianne B. Eide ◽  
Knut Liestøl ◽  
Grete F. Lauritzsen ◽  
Arne Kolstad ◽  
...  
Keyword(s):  
Stem Cell ◽  
B Cell ◽  
Hodgkin Lymphoma ◽  
Stem Cell Transplant ◽  
High Dose Chemotherapy ◽  
Autologous Stem Cell Transplant ◽  
High Dose ◽  
Cell Transplant ◽  
Non Hodgkin Lymphoma

The Addition of Rituximab to Standard High Dose BEAM Chemotherapy for Autologous Stem Cell Transplant in Patients with Lymphoma Does Have a Significant Effect on Engraftment.

Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 5325-5325
Author(s):  
Francis K. Buadi ◽  
Brian McClune ◽  
Yoriann S. Hull ◽  
Furhan Yunus ◽  
Sohail Minhas ◽  
...  
Keyword(s):  
Stem Cell ◽  
Stem Cell Transplant ◽  
High Dose Chemotherapy ◽  
Autologous Stem Cell Transplant ◽  
High Dose ◽  
Cell Transplant ◽  
Neutrophil Recovery ◽  
Cell Dose ◽  
Time Period ◽  
Neutrophil Engraftment

Abstract The addition of Rituximab to standard combination chemotherapy has significantly improved outcomes in both young and elderly patients with Non-hodgkins lymphoma (NHL). High dose chemotherapy with autologous stem cell transplant is currently the standard of care for patients with relapsed hodgkins lymphoma (HL) and NHL. However the effect of the addition of Rituximab to standard high dose chemotherapy regimen for autologous stem cell transplant on neutrophil and platelet engraftment is unknown. There are however, reported cases of neutropenia developing in patients treated with Rituximab. We performed a retrospect review of all patients with HL and NHL treated in our institution with RBEAM (Rituximab, Carmustine, Etoposide, Cytarabine, Melphalan) chemotherapy between July 2000 and June 2005 and compared it to patients receiving BEAM in the same time period. Rituximab was given at a dose of 375mg/m2 one day prior to beginning standard BEAM high dose chemotherapy. Peripheral blood was the main source of stem cells. The purpose of this study was to determine the effect of the addition of Rituximab on neutrophil and platelet engraftment. A total of 46 patients were treated during this time period. Twelve patients received RBEAM and 34 received BEAM. There was a statistical significant difference in age between the two groups. There was however no difference between the two groups in terms of race, sex and primary diagnosis. Median stem cell dose was not significantly different between the two groups. Characteristic of both groups are shown in Table: 1 Characteristics of Both Groups Median Age (yrs) Race Diagnosis Median Stem Cell Dose(x10^6) AA White HL NHL RBEAM 50.5 3 9 3 9 3.9 BEAM 36 13 21 17 17 3.8 P-VALUE 0.01 0.49 0.2 0.54 Neutrophil engraftment was defined as the first day of ANC &gt; 500 on 3 consecutive days. Platelet engraftment was defined as the first day of platelet count &gt; 20,000 with no platelet transfusion in the next seven days. The median time to neutrophil engraftment was 12 day in RBEAM compared to 11 days in BEAM (p=0.09). Platelet engraftment was however significantly delayed in patients receiving RBEAM 18days versus 12 days for BEAM (p= 0.02). Looking at both cohorts together we found that patients with HL had a significant delay in platelet engraftment compared to those with NHL (p=0.04). However there was no difference in neutrophil recovery. Although, stem cell dose affected neutrophil recovery, it had no effect on platelet engraftment. There was no increased toxicity in the early post transplant period associated with the addition of Rituximab. No bleeding complications resulted form the delay in platelet engraftment in the patients who received RBEAM. In a linear regression model the only factor that significantly affected engraftment was conditioning regimen. We conclude that the addition of Rituximab to standard high dose BEAM chemotherapy for autologous stem cell transplant has no effect on neutrophil engraftment; however platelet engraftment may be delayed. The continue use of this regimen despite the small delay in platelet engraftment will depend on whether there is any benefit, in terms of response rate, progression free and overall survival.

Role of High-Dose Chemotherapy with Autologous Stem Cell Transplantation in Primary Systemic Amyloidosis: A Systematic Review and Meta-Analysis.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 2872-2872
Author(s):  
Madhusmita Behera ◽  
Ambuj Kumar ◽  
Mohamed A. Kharfan-Dabaja ◽  
Benjamin Djulbegovic
Keyword(s):  
Systematic Review ◽  
Overall Survival ◽  
Stem Cell ◽  
Stem Cell Transplant ◽  
Meta Analysis ◽  
High Dose Chemotherapy ◽  
Autologous Stem Cell Transplant ◽  
High Dose ◽  
Cell Transplant ◽  
Conventional Chemotherapy

Abstract Background: Primary systemic amyloidosis (AL) is a rare plasma cell clonal disorder(8/million) characterized by extracellular deposits of material composed mainly of fragments of light chain immunoglobulin throughout a body. Standard chemotherapy (e.g. melphalan and prednisone) is associated with poor outcomes (typical median survival is between 12–18 months with less than 5% survive 10 years). Autologous stem cell transplant (ASCT) has been increasingly advocated for treatment of AL. However, it is uncertain whether ASCT is better than standard chemotherapy. To address this uncertainty, we undertook a systematic review/meta-analysis to evaluate the efficacy of high-dose chemotherapy and autologous stem-cell transplant (HSCT) versus conventional chemotherapy in patients with AL. Methods: Data search of published studies included Medline [all randomized controlled trials (RCTs)], Cochrane library and hand search of references. Studies were included if they were comparison trials of HSCT versus conventional chemotherapy, regardless if they were RCTs, prospective studies with historical control, or single arm studies. The studies were eligible if patients had biopsy proven AL with at least one major organ involved. Data were extracted on benefits as well as harms (overall survival, event-free survival, response, treatment related mortality, treatment-related morbidity). Results: Out of 34 identified studies only 13 met the inclusion criteria for the current systematic review (2 RCTs, 2 prospective non-randomized trials involving historical control, and 9 single arm trials). Altogether these trials enrolled 1056 patients. Pooled data from 4 trials with controls (RCT and non-RCT) found similar overall survival for ASCT and conventional therapy arms [hazard ratio (HR) of 1.10 (95% CI 0.88, 1.36, p=0.4); p= 0.6]. Analysis of data according to trial design also did not find any difference in survival [HR for RCTs was 1.10 (95% CI 0.88, 1.37) and for non RCTs HR was 0.98 (95% CI 0.29, 3.35)]. The complete hematological response was also similar in both arms in RCTs (Odds ratio [OR]=1.38, 95%CI 0.67, 2.85; p=0.4) and non RCTs (OR=1.78, 95%CI 0.22, 14.65; p=0.32). The pooled proportion of treatment-related deaths in the single arm studies for AHCT was 0.119 (95% CI = 0.09 to 0.14)]. Conclusion: The results from the meta-analysis indicate that there is no statistically significant difference between the treatment effects from high-dose chemotherapy with ASCT and conventional chemotherapy. Hence, the efficacy of ASCT in improving overall survival and complete hematological response remains to be proven.

Phase II Study of Combination of the HyperCVAD Regimen with Dasatinib in Patients with Philadelphia Chromosome (Ph) or BCR-ABL Positive Acute Lymphoblastic Leukemia (ALL) and Lymphoid Blast Phase Chronic Myeloid Leukemia (CML-LB).

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 2814-2814 ◽  
Author(s):  
Farhad Ravandi ◽  
Deborah Thomas ◽  
Hagop Kantarjian ◽  
Stefan Faderl ◽  
Charles Koller ◽  
...  
Keyword(s):  
Phase Ii ◽  
Residual Disease ◽  
Lymphoblastic Leukemia ◽  
Philadelphia Chromosome ◽  
Clinical Activity ◽  
High Dose ◽  
Cell Transplant ◽  
Newly Diagnosed ◽  
Blast Phase ◽  
Platelet Recovery

Abstract Combination of cytotoxic chemotherapy with imatinib has improved the outcome for patients with Ph+ ALL and resulted in eradication of minimal residual disease and durable remissions without allogeneic stem cell transplant in some patients (Thomas D, Blood, 2004; Yanada M, JCO, 2006; Wassmann B, Blood, 2006; de Labarthe A, Blood, 2007). The dual Src and Abl inhibitor dasatinib has a significantly higher in vitro kinase inhibition against BCR-ABL and has demonstrated potent clinical activity in patients with imatinib-resistant lymphoid blast phase CML (CML-LB) and Ph+ ALL with over 50% complete cytogenetic responses (CG CR) in phase I and II trials but with median progression free survival of only 3 to 4 months. We are conducting a phase II trial in which patients with newly diagnosed or relapsed Ph+ ALL or CML-LB receive dasatinib 50 mg po bid for the first 14 days of each of 8 cycles of alternating hyperCVAD and high dose cytarabine and methotrexate. Patients in complete remission (CR) continue to receive maintenance dasatinib 50 mg po bid daily and vincristine and prednisone monthly for 2 years followed by dasatinib indefinitely. To date 15 newly diagnosed patients with Ph+ ALL (cohort I) and 4 patients with relapsed Ph+ ALL or CML-LB (cohort II) have received a median of 4 cycles (range 1 – 8); 4 patients are receiving maintenance in CR. Median age for cohort I is 55 years (range 23 – 79) and for cohort II, 43 years (range 26 – 69); 13 and 3 patients were older than 50 years, respectively. Median WBC at diagnosis for cohort I was 4.3 × 109/L (range, 0.8 – 203.4 x 109/L). Three patients had CNS involvement. Fourteen and 3 patients in the 2 cohorts are evaluable for response to induction; 2 are too early. Thirteen patients (93%) in cohort I and all evaluable patients in cohort II have achieved CR after the first cycle; 1 patient in cohort I died on day 20 from infections before response assessment; her bone marrow exam on day 14 showed no detectable disease. Ten of 11 (91%) patients in cohort I have achieved CG CR after 1 cycle; 3 are too early. Three of 4 patients in cohort II have achieved CG CR after 1 cycle; 1 had a new CG abnormality and 1 is too early. Six patients have achieved complete molecular remission after the first cycle with the lowest BCR-ABL/ABL in the other patients ranging from 0.01 to 1.91. Median time to neutrophil and platelet recovery for cohort I is 18 and 25 days and for cohort II 18.5 and 30.5 days. Grade 3 and 4 toxicity has included 7 episodes of GI bleeding as well as infections, diarrhea, hypophosphatemia, hypocalcemia, elevated transaminases, and acute renal failure unrelated to treatment. With a median follow up of 4 months (range, 0 – 10), 15 patients are alive and in CR; 1 died at induction, 1 died in CR from an unrelated cardiac event, and 2 are too early. No patient has relapsed and no patient has received an allogeneic transplant. We conclude that the combination of the hyperCVAD regimen with dasatinib is feasible and can achieve early molecular remissions in patients with Ph+ ALL and CML-LB.

Chemoimmunotherapy with a Modified Hyper-CVAD and Rituximab Regimen Improves Outcome for Patients with De Novo Philadelphia Negative Precursor B-Cell Acute Lymphoblastic Leukemia (ALL).

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 836-836
Author(s):  
Deborah A. Thomas ◽  
Hagop M. Kantarjian ◽  
Stefan Faderl ◽  
William G. Wierda ◽  
Jorge Cortes ◽  
...  
Keyword(s):  
B Cell ◽  
De Novo ◽  
Conflicts Of Interest ◽  
Residual Disease ◽  
Lymphoblastic Leukemia ◽  
Disease Free Survival ◽  
High Dose ◽  
Induction Phase ◽  
Liposomal Daunorubicin ◽  
Cd20 Expression

Abstract Abstract 836 The hyper-CVAD regimen is an effective frontline program for de novo adult ALL and LL [Kantarjian, JCO 18:547, 2000; Kantarjian, Cancer 101:2788, 2004, Thomas, Blood 104:1624, 2004]. Intensive chemotherapy with hyper-CVAD (fractionated cyclophosphamide, vincristine [VCR], doxorubicin, dexamethasone) alternates with high dose methotrexate (MTX) and cytarabine every 21 days for 8 courses, followed by maintenance therapy with POMP (6-mercaptopurine, MTX, VCR, prednisone). Historical CR rate was 92% with 3-year disease-free survival (DFS) rate of 38%. The regimen was modified in 1999. Induction chemotherapy was given in a protective environment owing to higher mortality in patients (pts) aged 60 years or older (17% vs 3%). Course 2 of liposomal daunorubicin and cytarabine was incorporated owing to reports suggesting benefit of early anthracycline intensification. Rituximab 375 mg/m2 (days 1 & 11 of hyper-CVAD, days 1 & 8 of methotrexate-cytarabine) was given if CD20 expression was 20% or greater due to its association with disease recurrence [Thomas, Blood 113:6330, 2009]. The maintenance phase was extended to 30 months with additional intensifications owing to late relapses after completion of POMP therapy. Newly diagnosed or primary refractory (1 course only) pts with ALL (n=204) or LL (n=27) were treated on the two sequential studies. Burkitt-type leukemia/lymphoma (BLL) and Philadelphia positive ALL were treated on alternative protocols. From May 2000 to December 2001, 69 pts were treated with modified hyper-CVAD with anthracycline intensification (9 induction-consolidation courses). Course 2 was then eliminated from the regimen (8 courses), with an additional 162 pts treated to date (pts age 30 years or less are now treated with augmented BFM). Median age was 43 yrs (range, 15–83). CD20 expression was noted in 49%. Overall CR rate of the evaluable group (n=225) was 93%; 7 pts achieved PR (LL with residual disease), five failed to respond, and 4 died during the induction phase. Three-yr CRD and OS rates were 70% and 62%, respectively after a median follow-up of 50 months (range, 2–106+). In the younger CD20 positive precursor B-cell ALL subset (n=99), rituximab improved outcome compared to historical experience with hyper-CVAD alone (n=127), with 3-yr CRD rates (75% vs 45%, p<.001) and OS rates (65% vs 38%, p<.001) approaching those of their CD20 negative counterparts. In contrast to the Burkitt experience, rituximab was not beneficial for the elderly subgroup (OS rates 28% vs 34%, p NS). Anthracycline intensification did not improve outcome. The addition of rituximab to the hyper-CVAD regimen appears to benefit the younger pts (age less than 60 yrs) with CD20 positive precursor B-cell ALL. Incorporation of rituximab and other monoclonal antibodies (e.g., ofatumumab, epratuzumab) into frontline chemotherapy regimens for ALL should be investigated systematically. Disclosures: No relevant conflicts of interest to declare.

A Phase III Randomized, Double Blind, Placebo Controlled Multi-Center Study Of Panobinostat For Maintenance Of Response In Patients With Hodgkin Lymphoma Who Are At Risk For Relapse After High Dose Chemotherapy and Autologous Stem Cell Transplant: Final Results After Early Trial Discontinuation

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 4648-4648 ◽  
Author(s):  
Bastian von Tresckow ◽  
Aleksander Skotnicki ◽  
Igur Lisukov ◽  
Shivani Srivastava ◽  
David S. Morgan ◽  
...  
Keyword(s):  
At Risk ◽  
Stem Cell Transplant ◽  
High Dose Chemotherapy ◽  
Autologous Stem Cell Transplant ◽  
Phase Iii ◽  
High Dose ◽  
Cell Transplant ◽  
Advisory Committees ◽  
Double Blind ◽  
Grade 3

Introduction High dose chemotherapy with autologous stem cell transplant (ASCT) is the treatment of choice for Hodgkin Lymphoma (HL) patients suffering from relapse or progression after first line therapy. However, patients with recurrence after ASCT have a very poor prognosis. Thus, the oral deacetylase inhibitor panobinostat was evaluated as maintenance therapy for patients at risk for relapse after ASCT to prevent recurrences. Methods HL patients after ASCT with at least one of the risk factors: primary refractory disease, early relapse (<12 months), multiple relapses, stage III/IV disease or hemoglobin <10,5 g/dl at relapse prior to transplant were randomized to receive oral panobinostat (45mg three times a week, every other week, QOW) or placebo (2:1 randomization) in this phase III randomized, double blind, placebo controlled multi-center trial. As per the original protocol, disease-free survival (DFS) was the primary endpoint. However, the trial was terminated prematurely due to slow recruitment and the new primary objective was the provision of drug to ongoing patients randomized to panobinostat in an open label phase and to the evaluation of safety in the whole patient population. Results The study was closed to enrollment and data were unblinded with only a total of 41 patients out of the planned 367 patients enrolled; 27 patients in the panobinostat arm and 14 patients in the placebo arm. Three patients (1 from the panobinostat arm and 2 from the placebo arm) never received treatment. Data are reported for patients treated during the randomized phase and no formal statistical analyses were conducted. The median duration of treatment was longer in the placebo arm (217 days) than in the panobinostat arm (176 days, randomized phase). The majority of patients in both treatment arms had an exposure of ≥ 24 weeks (53.8% in the panobinostat arm, 75% in the placebo arm). In the panobinostat arm, the most common reasons that patients discontinued were due to withdrawal of consent (29.8%) and adverse events (22.2%), whereas in the placebo arm, patients most commonly discontinued due to disease progression (28.6%). Most adverse events (AEs) occurred more frequently in the panobinostat arm (randomized phase). The most frequently reported AEs as compared to the placebo arm included: diarrhea (88.5%/25%), nausea (57.7%/8.3%), vomiting (46.2%/25%), fatigue (34.6%/25%), neutropenia (26.9%/33.3%), thrombocytopenia (26.9%/8.3%), oropharyngeal pain (26.9%/0%), headache (23.1%/0%), nasopharyngitis (19.2%/0%), upper respiratory infection (19.2%/8.3%), decreased appetite (15.4%/16.7%), pyrexia (15.4%/8.3%), influenza like illness (15.4%/0%) and sinusitis (15.4%/8.3%). Overall, the incidence of grade 3/4 AEs was 65.4% in the panobinostat arm during the randomized phase and 41.7% in the placebo arm. In the panobinostat arm, the most frequently reported grade 3/4 AEs were neutropenia (26.9%), thrombocytopenia (15.4%), and diarrhea, vomiting and fatigue (all 11.5%). In the placebo arm, the most frequently reported grade 3/4 AEs were neutropenia (33.3%), leukopenia (16.7%) and herpes zoster (16.7%). Although efficacy could not be formally evaluated due to the small number of patients in this trial, it is interesting to note that more patients from the placebo arm discontinued from the study due to disease progression (28.6% vs. 14.8% panobinostat patients). Conclusion The safety observations from this study were consistent with the general safety profile known for panobinostat. The use of panobinostat in a maintenance setting in a QOW schedule appeared to have acceptable tolerability in a population of patients with HL who are at risk for relapse after high dose chemotherapy and ASCT. Disclosures: von Tresckow: Takeda: Honoraria, Reimbursement of congress, travel, and accommodation costs , Reimbursement of congress, travel, and accommodation costs Other; Novartis: Consultancy, Honoraria. Szer:Novartis: Membership on an entity’s Board of Directors or advisory committees. Sureda:Novartis: Consultancy, Membership on an entity’s Board of Directors or advisory committees. Engert:Seattle Genetics, Inc.: Honoraria, Research Funding; Millennium: Honoraria, Research Funding; Takeda: Honoraria.

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