scholarly journals Blinatumomab and Inotuzumab for the Treatment of Multiply Relapsed Acute Lymphoblastic Leukemia: A Real-Life Campus ALL Study

Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 3408-3408
Author(s):  
Mariarita Sciumè ◽  
Cristina Papayannidis ◽  
Antonio Curti ◽  
Antonella Vitale ◽  
Sabina Chiaretti ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Lymphoblastic Leukemia ◽  
Real Life ◽  
Hematologic Toxicity ◽  
Intensive Chemotherapy ◽  
Advisory Committees ◽  
Hematopoietic Stem ◽  
Female Ratio ◽  
Immunotherapy Strategy ◽  
Blast Count

Abstract Blinatumomab (Blina) and inotuzumab (InO) have improved the outcome of relapsed/refractory B-lymphoblastic leukemia (R/R B-ALL). However, many patients (pts) relapse after these treatments and little is known on their outcomes after recurrence and re-treatment with subsequent immunotherapy. We hereby describe the clinical characteristics and outcome of 71 pts with R/R B-ALL treated with both Blina and InO in any sequence - Blina/InO or InO/Blina - at different disease recurrences. At diagnosis, the median age was 34 years (15-64) and the male/female ratio was 1.6. Sixteen pts (22%) were Ph+ ALL, 3 (4%) were t(4;11)+ and 9 (13%) carried a complex karyotypes. ECOG PS was 0-1 in 66 pts (93%). At the time of the first immunotherapy, pts had received a median of 2 previous lines of treatment (1-8). All Ph- pts received intensive chemotherapy front-line; Ph+ pts received TKIs and steroids in 13 cases and intensive chemotherapy plus TKIs in 3 cases. Blina was the first salvage treatment (Blino/InO sequence) in 57 pts (80%) and InO (InO/Blina sequence) in 14 (20%). Twenty-seven pts (38%) had underwent a previous allogeneic hematopoietic stem cell transplantation (HSCT). At the start of Blina as first immunotherapy, the median bone marrow (BM) blast count was 40% (0-100%); at the start of InO as first immunotherapy, the median BM blast count was 64% (2-90%). An extramedullary involvement was present in 5 patients (9%) in the Blina/InO group and in 1 patients (7%) in the InO/Blina group. During immunotherapy, the median number of lumbar punctures was 2 (0-9). A median of 2 cycles were administered for both Blina (range 1-9) and Ino (range 1-4). In the Blina/InO group, after Blina a G3/4 toxicity occurred in 15 cases (26%): non-hematologic in 12 cases (21%), neurologic in 6 (8%). Infections occurred in 17 pts (30%). In the InO/Blina group, after InO a G3/4 toxicity occurred in 3 pts (21%), with extra-hematologic toxicity in 2 cases (14%, liver toxicity 1 case). Infections occurred in 4 cases (28%). In the Blina/InO group, after Blina 36 pts (63%) achieved a complete remission (CR), with a negative minimal residual disease (MRD) in 24 (42%) pts; after InO, a CR was re-achieved in 47 pts (82.4%), with 34 (59.6%) being MRD-. In the InO/Blina group, after InO a CR was reached in 13 cases (93%), with 6 pts (42.8%) being MRD-; after Blina, a CR was re-achieved in 6 pts (42.8%), with 3 (21.4%) being MRD-. This salvage immunotherapy strategy represented a bridge to alloHSCT for 26 pts (37%). From the first immunotherapy, in the Blina/InO group, the median overall survival (OS) was 19 months and after InO 6.3 months (OS in MRD- vs MRD+, p ns). Disease free survival (DFS) after Blina was 7.4 months (11.6 vs 2.7 months in MRD- vs MRD+ pts, p .03) and after InO it was 5.4 months (MRD- vs MRD+ pts, p ns). In the InO/Blina group, the median OS was 9.4 months and after Blina 4.6 months (7.5 vs 2.8 months in MRD- vs MRD+ pts, p .02). DFS after InO was 5.1 months (MRD- vs MRD+ pts, p ns) and after Blina it was 1.5 months (8.7 vs 2.5 gg in MRD- vs MRD+ pts, p .02). OS and DFS in MRD- pts after Blina was significantly better, both in the Blina/InO and the InO/Blina groups. With a median follow-up of 16.5 months from the start of immunotherapy and 33.8 months from initial diagnosis, 24 pts (34%) are alive and 16 (22%) are alive in CR. Four patients (6%) died in CR due to veno-occlusive disease during HSCT after InO treatment. Interestingly, OS and DFS from the first immunotherapy was better in pts with a previous alloHSCT (median survival 24.2 vs 13 months, p=.0135). AlloHSCT after second immunotherapy was associated with a better OS and DFS (OS 9.8 and DFS 7.2 months vs 7.8 and 4.4 months, p ns). Our real-life study in R/R B-cell ALL pts with multiple previous lines of treatment demonstrates the feasibility and efficacy of a sequential immunotherapy strategy in terms of MRD response, DFS and OS, and as a bridge to HSCT. SM and PC: equal contributors Disclosures Papayannidis: Janssen: Honoraria; Astellas: Honoraria; AbbVie: Honoraria; Amgen: Honoraria; Pfizer: Honoraria; Novartis: Honoraria. Curti: Jazz Pharma: Membership on an entity's Board of Directors or advisory committees; Pfizer: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees; Abbvie: Membership on an entity's Board of Directors or advisory committees. Chiaretti: amgen: Consultancy; pfizer: Consultancy; novartis: Consultancy; Incyte: Consultancy. Forghieri: Jannsen: Membership on an entity's Board of Directors or advisory committees; Novartis: Speakers Bureau; Jazz: Honoraria. Bonifacio: Bristol Myers Squibb: Honoraria; Amgen: Honoraria; Novartis: Honoraria; Pfizer: Honoraria. Cerrano: Janssen: Honoraria; Insight: Honoraria; Jazz: Honoraria. Fracchiolla: Gilead: Honoraria, Speakers Bureau; Abbvie: Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau.

scholarly journals Pegaspargase Can Safely be Administered in Adults Age 40 and Older with Acute Lymphoblastic Leukemia

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3816-3816 ◽  
Author(s):  
Ryan J. Daley ◽  
Sridevi Rajeeve ◽  
Charlene C. Kabel ◽  
Jeremy J. Pappacena ◽  
Sarah E. Stump ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Board Of Directors ◽  
Research Funding ◽  
Lymphoblastic Leukemia ◽  
Philadelphia Chromosome ◽  
Hypersensitivity Reactions ◽  
Newly Diagnosed ◽  
Advisory Committees ◽  
Hematopoietic Stem ◽  
Frontline Treatment

Introduction: Asparaginase (ASP) has demonstrated a survival benefit in pediatric patients (pts) with acute lymphoblastic leukemia (ALL) and is now part of standard-of-care frontline treatment. As a result, asparaginase preparations have been incorporated into the treatment of adult ALL to improve outcomes. Pegaspargase (PEG-ASP), a modified version of asparaginase with prolonged asparagine depletion, appears to be safe in adults up to age 40 (Stock, et al., Blood, 2019), but is associated with a unique spectrum of toxicities, the risks of which appear to increase with age. Therefore, the safety of PEG-ASP remains a significant concern in older adults w/ ALL. Methods: We conducted a single center retrospective chart review of pts age ≥40 years who received PEG-ASP as part of frontline induction/consolidation or reinduction, between March 2008 and June 2018 at Memorial Sloan Kettering Cancer Center. The primary objective was to evaluate the tolerability and toxicity of PEG-ASP based on the incidence and severity of ASP-related toxicities (hypersensitivity reactions, hypertriglyceridemia, hyperbilirubinemia, transaminitis, pancreatitis, hypofibrinogenemia, etc) according to the Common Terminology Criteria for Adverse Events, version 4.03. Laboratory values recorded were either the peak or the nadir, the more appropriate for toxicity assessment, within a 4-week period following PEG-ASP administration. Secondary objectives were to determine the total number of doses of PEG-ASP administered in comparison to the number of doses intended, and to characterize the rationale for PEG-ASP discontinuation when applicable. Fisher's exact test was used to compare the incidence of PEG-ASP toxicities with respect to pt and treatment characteristics (regimen, age, BMI, gender, Philadelphia chromosome positive (Ph+) vs. Ph-, presence of extramedullary disease, PEG-ASP dose). P values were not adjusted for multiple comparisons. Results: We identified 60 pts with ALL (40 B-ALL and 20 T-ALL) who received at least one dose of PEG-ASP. Nine pts were Ph+. The median pt age at initiation of the treatment was 53, (range, 40 to 80), and 19 pts had a BMI ≥30 kg/m2. Forty-four pts received treatment for newly diagnosed ALL, and 16 pts for relapsed disease. Table 1 lists pt baseline characteristics. Among the 44 pts with newly diagnosed ALL, 27 pts received PEG-ASP as part of pediatric or pediatric-inspired regimens at doses of 2000 - 2500 units/m2, and 1 pt received a modified dose of 1000 units/m2 due to age. The remaining 16 pts received PEG-ASP at doses of 1000 - 2000 units/m2 for consolidation, per established adult regimens (ALL-2 and L-20; Lamanna, et al., Cancer, 2013). Grade 3/4 ASP-related toxicities with a >10% incidence included: hyperbilirubinemia, transaminitis, hypoalbuminemia, hyperglycemia, hypofibrinogenemia, and hypertriglyceridemia. Frontline treatment regimens in which PEG-ASP was used in consolidation cycles only (ALL-2, L-20) were associated w/ a lower incidence of hyperbilirubinemia (p=0.009) and hypertriglyceridemia (p<0.001) compared to those regimens that included PEG-ASP during induction (pediatric/pediatric-inspired regimens) (Table 2). Younger age (40-59 vs. ≥60 years) was associated with a greater risk of hypertriglyceridemia (p<0.001) and higher PEG-ASP dose (≥2000 vs. <2000 units/m2) was associated with a greater risk of hypertriglyceridemia and hypofibrinogenemia (p=0.002 and p=0.025, respectively). Thirty-eight pts (63%) received all intended doses of PEG-ASP. Six pts stopped PEG-ASP to proceed to allogeneic hematopoietic stem cell transplantation (5 in CR1, 1 in CR2), and 7 pts stopped for hypersensitivity reactions. Hepatotoxicity was the only ASP-related toxicity that led to PEG-ASP discontinuation occurring in 5 pts (hyperbilirubinemia, N=4; transaminitis, N=1). The total number of intended doses of PEG-ASP based on regimens used was 186, and 112 were administered. Conclusion: PEG-ASP was incorporated into the treatment of 60 adult ALL pts age ≥40, with manageable toxicity. Seven pts discontinued PEG-ASP due to hypersensitivity reactions and 5 discontinued due to hepatotoxicity, but other reported toxicities did not lead to PEG-ASP discontinuation and the majority of the pts completed all intended doses of PEG-ASP. This study suggests that with careful monitoring, PEG-ASP can safely be administered in adults ≥40 years of age. Disclosures Rajeeve: ASH-HONORS Grant: Research Funding. Tallman:UpToDate: Patents & Royalties; Oncolyze: Consultancy, Membership on an entity's Board of Directors or advisory committees; Delta Fly Pharma: Consultancy, Membership on an entity's Board of Directors or advisory committees; Abbvie: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Rigel: Consultancy, Membership on an entity's Board of Directors or advisory committees; Cellerant: Research Funding; Tetraphase: Consultancy, Membership on an entity's Board of Directors or advisory committees; Nohla: Consultancy, Membership on an entity's Board of Directors or advisory committees; BioLineRx: Consultancy, Membership on an entity's Board of Directors or advisory committees; Orsenix: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; ADC Therapeutics: Research Funding; Biosight: Research Funding; Jazz Pharmaceuticals: Consultancy, Membership on an entity's Board of Directors or advisory committees; KAHR: Consultancy, Membership on an entity's Board of Directors or advisory committees; Daiichi-Sankyo: Consultancy, Membership on an entity's Board of Directors or advisory committees. Geyer:Dava Oncology: Honoraria; Amgen: Research Funding. Park:Takeda: Consultancy; Allogene: Consultancy; Amgen: Consultancy; AstraZeneca: Consultancy; Autolus: Consultancy; GSK: Consultancy; Incyte: Consultancy; Kite Pharma: Consultancy; Novartis: Consultancy.

Secondary Chromosomal Abnormalities Appear to Be Less Prognostic for Children with Philadelphia Chromosome Positive (Ph+) Acute Lymphoblastic Leukemia (ALL) Treated with Intensified Imatinib and Chemotherapy: Results of the Children's Oncology Group (COG) Study AALL0031.

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 2606-2606
Author(s):  
Andrew J. Carroll ◽  
Nyla A. Heerema ◽  
Meenakshi Devidas ◽  
W. Paul Bowman ◽  
Chenguang Wang ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Board Of Directors ◽  
Chromosomal Abnormalities ◽  
Lymphoblastic Leukemia ◽  
Prognostic Significance ◽  
High Dose ◽  
Unrelated Donor ◽  
Intensive Chemotherapy ◽  
Advisory Committees ◽  
The Impact

Abstract Abstract 2606 Poster Board II-582 Background: Secondary chromosomal aberrations at diagnosis occur frequently in both pediatric and adult patients with Ph+ ALL. Several studies have shown that the presence of additional cytogenetic abnormalities is a major negative prognostic factor among children and adults with Ph+ ALL. A Japanese study in adults with Ph+ ALL indicated that the adverse prognostic significance of secondary rearrangements was seen even in patients treated with imatinib-combined chemotherapy including consolidation with blood and marrow transplantation (BMT) (Haematologica 92:287, 2008). Two-year EFS in that study was 48.5±5.7%, and the 50 patients with secondary chromosomal abnormalities had a 35% - 40% lower EFS than those with t(9;22) only (p=0.003). COG AALL0031 treated children with imatinib in combination with intensive chemotherapy. This study had an overall 3 year EFS of 80±11% for those receiving chemotherapy only, an outcome similar to those receiving allogeneic BMT. We evaluated the impact of secondary chromosomal abnormalities in children and adolescents receiving this regimen. Methods: Children and adolescents (age 1–21 years) with Ph+ ALL enrolled on AALL0031 after completing 3- or 4-drug induction therapy. Imatinib was given at 340mg/m2/day for an increasing number of days in combination with an intense chemotherapy backbone. Cohort 4 received imatinib for 126 (N=12) and cohort 5 for 280 continuous days (N=50) prior to maintenance therapy. The first two cycles of the intensive chemotherapy included ifosfamide and etoposide (cycle 1) and high dose (HD) methotrexate and HD cytarabine (cycle 2). Patients were non-randomly assigned to an HLA-identical related donor BMT, if a donor was available, or to an intensive chemotherapy regimen that continued for approximately 2.2 years. Unrelated donor BMT was not allowed; these patients were taken off protocol but included in survival evaluation by an intent-to-treat evaluation. Results: Satisfactory cytogenetic results were available for 71 (76%) of 93 enrolled children. Secondary aberrations were present in 46 (65%) patients. The most frequent secondary aberrations were +der(22) (N=21), =50 chromosomes (N=14), −7/del(7p) (N=11), abnormal (9p) (N=7), and +8 (N=5). The overall 3 year CCR was 79±6% for patients in cohorts 4/5, including those with non evaluable cytogenetics (N=55). When outcome analyses were limited to Ph+ ALL patients in cohorts 4/5 (N=43), three-year CCR for patients with Ph+ alone (N=14) was 86±10% versus 71±9% for those with Ph+ and secondary abnormalities (N=29) (p=0.19). Conclusions: In this study, the lower 3 year CCR seen in patients with Ph+ ALL with secondary chromosomal abnormalities was not significantly different than for children with Ph+ alone possibly reflecting small patient numbers. The lower 3 year CCR for Ph+ ALL with secondary chromosomal abnormalities in those treated on AALL0031 (∼15% lower) appeared to be less than that seen in the previous adult trial (∼35%). This may be the result of the addition of imatinib to intensified chemotherapy reducing the poor prognostic significance of additional chromosome abnormalities seen in previous studies. Larger patient numbers and longer follow-up will be necessary to answer this question. Disclosures: Schultz: DOR Biopharma: Membership on an entity's Board of Directors or advisory committees; Genzyme Canada: Membership on an entity's Board of Directors or advisory committees.

scholarly journals Validation of SIE, Sies, GITMO Operational Criteria for the Definition of Fitness in Elderly Patients Affected with Acute Myeloid Leukemia: A Six-Years Retrospective Real-Life Experience

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 2150-2150
Author(s):  
Raffaele Palmieri ◽  
Giovangiacinto Paterno ◽  
Eleonora De Bellis ◽  
Elisa Buzzatti ◽  
Valentina Rossi ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Myeloid Leukemia ◽  
Real Life ◽  
Italian Society ◽  
Intensive Chemotherapy ◽  
Advisory Committees ◽  
Actual Treatment ◽  
Operational Criteria ◽  
The Impact

Introduction:Acute Myeloid Leukemia (AML) predominantly affects the older population, with a median age at diagnosis of 67 years (yrs). In the last decades, Overall Survival (OS) has not changed meaningfully for these patients (pts). This worse outcome is explained by the poor-risk biological profile of the disease but also by the scarce propensity in administering curative treatments in this age category. Despite this general attitude, there is consensus that age alone should not be representative of the functional profile of older pts and that making decisions based on the sole age parameter can compromise possible therapeutic attempts. Therefore, a panel of experts from SIE (Italian Society of Hematology),SIES (Italian Society of Experimental Hematology) and GITMO (Italian Group for Bone Marrow Transplantation) summarized a list of operational criteria to be used in the process of treatment allocation, identifying 3 fitness categories of patients to address to differentiated strategies: 1)Fit pts (FP), eligible to intensive chemotherapy (IC) with the aim to achieve complete remission (CR); 2)Unfit pts (UP), eligible to non-intensive chemotherapy (NIC) with the aim to prolong survival; 3)Frail pts (FP) for whom, since the natural course of disease cannot be altered, supportive therapy (ST) is the best option in the attempt to preserve an acceptable quality of life (Ferrara et. al, Leukemia 2013). Aim: We retrospectively applied the operational SIE, SIES, GITMO criteria to a series of 180 consecutive non-APL AML pts diagnosed at our institution from 2013 to 2018 to investigate (1) the degree of concordance between the "operational criteria derived categories" and the actual treatment received; (2) the impact of this evaluation on long-term OS. Methods: We analyzed 180 consecutive pts with AML (median age 66 yrs, range 21-91) diagnosed at our institution from January 2013 to December 2018. We mainly focused on 125 pts older than 60 yrs (median 70 yrs, range 61-91). For the purpose of comparison, 55 younger pts, submitted to IC (51/55, 93%), were also analyzed. Results: SIE, SIES, GITMO operational criteria were retrospectively applied through medical files backtracking. One-hundred-48 out of 181 pts were stratified according to ELN 2010 as follow: 24 (16%) low risk, 59 (40%) intermediate-I, 25 (17%) intermediate-II and 40 (27%) high risk. This risk stratification did not differ between younger and older pts, suggesting that risk distribution may not be always an age-related factor. Overall, according to physician choice, 98 pts were submitted to IC, 40 to NIC, 42 to ST (54%, 22%, 24%, respectively). When focusing on pts older than 60 yrs, 47/125 were submitted to IC, 39/125 to NIC, 39/125 to ST (38% vs. 31% vs. 31%, respectively). A high concordance between treatment actually given and the one derived from the application of the "operational criteria" (165/180, 92%) was observed. The highest concordance was observed for the association of ST with FrP (39/40, 98%), whereas the associations IC with FP (96/107, 90%) and NIC with UP (30/33, 91%) showed a lower level of concordance. Overall, by applying the "operational criteria" the 3 categories differed significantly in terms of OS: 15,3 mos (range 0,4-78) for FP, 8,6 mos (range 2,2-47,9) for UP and 1 mos (range 0,1-29,9) for FrP, respectively (p<0.001). For pts older than 60 yrs, OS was 9,1 mos (range 0,4-78), 9,2 mos (range 2,2-47,9) and 1 mos (range 0,1-29,9) for FP, UP and FrP, respectively (p<0.001) (Fig. 1A). According to the treatment actually received, OS of pts older than 60 yrs was 6,9 mos (range 0,4-78) for IC, 11.0 mos (range 2,2-47,9) for NIC and 1 mos (range 0,1-29,9) for ST, respectively (p<0.001) (Fig. 1B). Conclusions: In our real-life analysis, we confirmed that SIE, SIES, GITMO "operational criteria" represent a powerful tool to discriminate categories of older pts with different outcome.In pts older than 60 years, it was observed a high degree of concordance (>90%) between the "operational criteria" and the actual treatment delivered. However, long-term OS was longer when plotted according to the 3 fitness categories rather than to treatment intensity stratification (Fig.1 A and B). Such a discrepancy can be explained by a higher incidence of toxicity/early mortality in the IC group and also by a suboptimal application of treatment selection criteria. Reproducibility of operational criteria applications in a prospective fashion is currently underway. Disclosures Venditti: Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees; Pfizer: Consultancy, Membership on an entity's Board of Directors or advisory committees; Daiichi-Sankyo: Consultancy, Membership on an entity's Board of Directors or advisory committees; Astellas: Membership on an entity's Board of Directors or advisory committees; Abbvie: Consultancy. Buccisano:Janssen: Membership on an entity's Board of Directors or advisory committees; Astellas: Membership on an entity's Board of Directors or advisory committees; Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau.

scholarly journals Vascular and Parenchymal Alterations of the Liver and Liver Surveillance in Patients Who Received Inotuzumab Ozogamicin As the Standard of Care for Relapse/Refractory Acute Lymphoblastic Leukemia

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 1343-1343
Author(s):  
Giovanni Marconi ◽  
Federico Ravaioli ◽  
Giovanni Martinelli ◽  
Elton Dajti ◽  
Maria Chiara Abbenante ◽  
...  
Keyword(s):  
Portal Hypertension ◽  
Acute Lymphoblastic Leukemia ◽  
Board Of Directors ◽  
Lymphoblastic Leukemia ◽  
Monitoring Program ◽  
Liver Stiffness ◽  
Standard Of Care ◽  
Advisory Committees ◽  
Hematopoietic Stem

Rationale: Inotuzumab ozagomicin (IO) has been linked to an increased incidence of veno-occlusive disease (VOD) and liver alterations. Most VOD events occurred during hematopoietic stem cell (HSCT) transplantation after IO therapy. We have previously described that the measurement of liver stiffness can anticipate the diagnosis of VOD in the context of HSCT. The mechanisms underlying the increased risk of VOD and liver damage in patients receiving IO are not well understood; in the pathogenesis endothelial damage, ozagomicin release and on-target off-tumor effects may be involved. Here, we aimed to assess the effects of IO on the changes of liver, vascular and biochemistry parameters. Methods: Intensive monitoring of the liver was incorporated into the standard of care of patients who received IO for relapsed or refractory (R / R) acute lymphoblastic leukemia (ALL). Upper abdomen ultrasound with Doppler was performed at baseline and at the end of therapy; liver stiffness measurement (LSM) by Fibroscan® (Echosens, Paris, France) at every IO course or at every IO infusion. With the exception of ursodeoxycholic acid, the patients did not receive prophylaxis for VOD. Data was collected after anonymous aggregation, in accordance with GCP and Helsinki declaration. Results are reported as median with interquartile ranges (IQR). Results: At data cut-off, 1st Apr 2019, 16 patient received baseline assessment and at least a post-IO assessment in our monitoring program. In our patent set, median age was 44.5 (IQR 30.7 - 64.0); 12/16 (75 %) patients relapsed after the last treatment and 4/16 (25 %) patients were refractory to the last treatment; patients received a median of 3 (IQR 2 - 3.7) lines before IO; 6/16 (37.5 %) patients undergone HSCT before IO, of which a patient had 1st and 2nd HSCT before IO; 5/16 (31.25 %) undergone HSCT after IO therapy (no patients had second HSCT after IO). Patients received a median of 2 (IQR 2.0 - 3.7) IO administration according to the schedule of the phase 3 trial. The median duration of the therapy was 61.5 days (IQR 43.2 - 114.0) and median progression-free survival in our population was 278.0 days (95% C.I. 264.0 - 292.0). In our patient set, we performed 113 biochemistry determination, 30 liver ultrasounds with Doppler and 116 LSM examination. One patient received a liver biopsy. Among the biochemical exams (AST, ALT, GGT and alkaline phosphatase) only the AST values significantly increased after 1st course of IO (from the median value of 21 U/L to 53 U/L after course 3). Liver ultrasound with Doppler revealed portal hypertension signs in half of the patients during IO monitoring program. Among these patients 7/16 (44%), 3/16 (17%), 5/16 (33.3%) and 3/16 (17%) showed splenomegaly, recanalization of the paraumbilical vein, dilatation of portal vein and ascites, respectively. Median LSM significantly increased from a baseline value of 6 kPa to 7.8 kPa after last post-IO assessment (p-value&lt;0.01). The median increase of LSM values on the baseline after course 1 of IO was 3.3% (0%- 4.9%), after course 2 was 38.3% (26.4% - 45.2%) after course 3 was 43.3% (35.4% - 48.6%) and after course 4 was 56.7 (45.8% - 60.1%), see figure. Eight of the 16 patients (50%) showed an increase in LSM with values comparable to fibrosis higher than 2 (&gt; 7.1 kPa). With a median follow up of 387.5 days (IQR 182.8-524.5) we observed one VOD event (7%); the VOD was graded severe and occurred after HSCT post-IO. Conclusions: Our clinical experience represents the first step to better understand the IO-related liver alterations, as we described the frequency and relevance of quantitative markers. Most of the patients in our set developed ultrasound and/or elastography alteration during IO therapy. Furthermore, these alterations do not seem to correlate with biochemistry. Even if most of the patients had sub-clinical vascular and parenchymal alterations of the liver portal-hypertension related, VOD incidence in our set is comparable with literature. Long-term follow-up results are expected to test whether alterations return or evolve over time. Stratifying the tailored risk liver complications with prospective non-invasive and marker-driven strategies in term of IO dosing and HSCT timing could be a great benefit for patients. * FR and GM contributed to this manuscript equally # AC and CP contributed to this manuscript equally Figure Disclosures Martinelli: Roche: Consultancy; BMS: Consultancy; Novartis: Consultancy; Pfizer: Consultancy; ARIAD: Consultancy. Cavo:janssen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: travel accommodations, Speakers Bureau; bms: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; sanofi: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; novartis: Honoraria; takeda: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; amgen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; AbbVie: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Other: travel accommodations, Speakers Bureau. Papayannidis:Amgen: Honoraria; Novartis: Honoraria; Teva: Honoraria; Pfizer: Honoraria; Incyte: Honoraria; Shire: Honoraria.

scholarly journals Long-Term Outcome of Relapsed Acute T-Lymphoblastic Leukemia (T-ALL) in Children and Adolescents

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 2580-2580
Author(s):  
Luciana Vinti ◽  
Luisa Strocchio ◽  
Barbara Buldini ◽  
Daniela Silvestri ◽  
Valentino Conter ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Board Of Directors ◽  
Induction Therapy ◽  
Progressive Disease ◽  
Lymphoblastic Leukemia ◽  
Unrelated Donor ◽  
Primary Therapy ◽  
Advisory Committees ◽  
Hematopoietic Stem ◽  
Long Term Outcome

Introduction Despite improvements in first-line treatment of childhood T-ALL, relapse remains the main cause of treatment failure. Patients with T-ALL experiencing leukemia recurrence have a dismal outcome, mostly due to a failure to achieve a second complete remission (CR) or to subsequent relapse. Assessment of minimal residual disease (MRD) may allow identifying subsets of patients with different prognosis. We analyzed the outcomes of 141 Italian children and adolescents who experienced T-ALL relapse after frontline multicenter AIEOP-BFM ALL treatment trials. Methods: This retrospective study aimed at describing the outcomes of Italian patients with T-ALL who were enrolled in the AIEOP-BFM ALL2000, 2006 and 2009 trials and subsequently experienced disease relapse. Among the 750 T-ALL Italian patients enrolled in the above-mentioned trials, 141 had a disease recurrence (70/251 patients in ALL2000 trial, 29/190 in ALL2006 trial, and 42/309 in ALL2009 trial). Molecular MRD monitoring after induction therapy for leukemia relapse was available for 38 patients. Results: The 141 patients, 113 males and 28 females, had a median age of 9 years at diagnosis (range 1-17) and 10 at relapse (range 2-19). At diagnosis, 7 patients were allocated to the Standard (SR), 45 to the Medium (MR), and 89 to the High Risk (HR) group, respectively. Thirty-four (4 MR and 30 HR patients) of these children were given allogeneic hematopoietic stem cell transplantation (allo-HSCT) in 1st CR and 41 had received central nervous system (CNS) radiotherapy. Relapses were classified as very early (occurring <18 months from diagnosis), early (occurring ≥18 months from diagnosis and <6 months after completion of primary therapy), and late (occurring >6 months after the end of the frontline protocol) in 92, 36, and 13 patients, respectively. Site of relapse was isolated bone marrow (BM) in 74 patients, combined BM/extramedullary (EM) in 23 patients, and isolated EM in 44 patients (involving a single EM site in 37 cases and >1 EM site in 7 cases; CNS was involved in 29 patients). At the time of relapse, 7 patients were treated according to AIEOP ALL REC98 Trial, 57 according to AIEOP ALL REC2003 Trial, while the remaining 77 patients received other combination of chemotherapy. After reinduction/consolidation treatment, 58 patients were given allo-HSCT from either a matched family donor (16) or an unrelated donor (UD, 31 patients, of which 21 from a matched UD and 10 from a mismatched UD) or an HLA-partially matched relative (11). With a median follow-up of 7.5 years (range 2-14), 34 patients are currently alive; 17 of these patients had EM isolated relapse, which was very early in 13 cases, and 17 had BM involvement at relapse, with late relapse in 8 cases. The 8-year overall survival (OS) of the whole cohort was 23.3% (95% CI 16.5-30.7) (Figure 1A). Isolate EM relapse (Figure 1B) and late relapses were associated with a better OS probability. Both factors remained statistically significant in multivariable analysis. Moreover, in univariable analysis a better prognosis was observed in patients treated more recently (i.e., after year 2008) (8-year OS 31.8% vs 16.2%, p=0.01). After allo-HSCT, 29 patients are currently alive, while the remaining 29 patients died from progressive disease (21) or transplant-related causes (8), leading to a 8-year OS for patients given allo-HSCT in 2nd RC of 48.5% (95% CI 34.7-61.0). Of the 83 children given sole chemotherapy, 5 are currently alive, while the remaining 78 died due to progressive disease (53), organ-failure (7), infection (9), or other causes (9). MRD monitoring was performed for 38/97 patients with BM involvement (5 with late, 13 with early, and 20 with very early relapse, respectively). Patients with a post-induction MRD <10-3 showed a reduced incidence of relapse (Figure 1C), resulting into better probability of 8-year OS (Figure 1D) in comparison to patients with higher MRD levels. Conclusions: Our results confirm that T-ALL relapse, especially if involving BM and occurring within 6 months from treatment discontinuation is still associated with poor prognosis, although in the last 10 years a higher proportion of children with relapsed T-ALL has been rescued by second line therapy, including transplantation. In this Italian retrospective cohort, a MRD value >10-3 at the end of induction therapy predicts a miserable outcome, this finding allowing to identify patients eligible to experimental therapies. Figure 1 Disclosures Merli: Novartis: Honoraria; Amgen: Honoraria; Bellicum: Consultancy; Sobi: Consultancy. Rizzari:JazzPharma, Shire, medac , Sigma-Tau, Baxalta, Shire and Servier: Consultancy, Honoraria; Together with study group from Shire, medac , Sigma-Tau, Baxalta, Shire and Servier: Research Funding. Parasole:Servier: Honoraria; Baxalta: Honoraria; Eusapharma: Honoraria. Locatelli:bluebird bio: Consultancy; Miltenyi: Honoraria; Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees; Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees; Bellicum: Consultancy, Membership on an entity's Board of Directors or advisory committees.

scholarly journals Dose-Adjusted Intensive Chemotherapy Is Safe and Tolerable in Older Patients with Ph-Negative Acute Lymphoblastic Leukemia

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 5158-5158
Author(s):  
Anne S. Renteria ◽  
Sangeetha Venugopal ◽  
Bridget Marcellino ◽  
Alla Keyzner ◽  
Marina Kremyanskaya ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Lymphoblastic Leukemia ◽  
Board Of Directors ◽  
Older Patients ◽  
Research Funding ◽  
Chemotherapy Regimen ◽  
Lymphoblastic Leukemia ◽  
Intensive Chemotherapy ◽  
Advisory Committees

Abstract Background The outcomes of older adults with acute lymphoblastic leukemia (ALL) remain poor when compared to younger ALL patients [PMID 19897583, 28419558, 22409379, 10653870]. Asparaginase (Asp) induces death of human lymphoblasts, and effective asparagine depletion is associated with improved outcomes in ALL. PEG-Asparaginase (PEG-Asp), which has a longer half-life than Asp, is a key component of the intensive chemotherapeutic regimens utilized for treatment of pediatric and younger adult ALL [PMID 29450465]. Frequently, older patients with Ph-negative ALL are not offered PEG-Asp containing pediatric chemotherapy regimen because of concerns related to tolerability and safety in this population [PMID 28355969]. Methods The Adult Leukemia Program at Mount Sinai Hospital developed an age-based, dose-adjusted, CALGB 10403 based intensive chemotherapy regimen for adults (≥40 years) with a diagnosis of Ph-negative ALL. For patients up to 60 years, prednisone (PRD) dose was reduced from 60 to 40 mg/m2/day from D1 to D28, and PEG-Asp reduced from 2500 to 1000 units/m2 (D4). For patients aged 61 years and above, PRD was further reduced to 25 mg/m2/day, and PEG-Asp to 1000 units/m2 on D4. In CD20+ ALL, rituximab x 8 doses were added to the regimen. CNS-prophylaxis consisted of intrathecal methotrexate at D1, D8 and D29 during induction, and during subsequent courses of chemotherapy based on the CALGB 10403 protocol. A PEG-Asp oriented supportive care plan was developed to prevent and treat Asp-related adverse effects. After the administration of PEG-Asp, Antithrombin III (ATIII) and fibrinogen levels were monitored on the same day, twice a week, for at least two weeks. If ATIII levels were < 70% and/or fibrinogen levels < 120 mg/dL, levels were corrected with the administration of ATIII concentrate and/or cryoprecipitate, respectively. Results Twelve patients with a median age of 58 years (45 - 76) were evaluable, and three patients were ≥ 70 years. Nine patients had B-cell ALL and three T-cell ALL. Three patients had a white blood cell count > 30 x103/µL at diagnosis. An ECOG status ≤ 2 at diagnosis was described in all patients, and all of them had multiple complex cytogenetic and molecular abnormalities. Ten patients had significant co-morbidities at diagnosis, including diabetes, hypertension, previous history of cancer, coronary artery disease, obesity, alcohol related chronic pancreatitis, and chronic diarrhea. Nine out of the twelve patients (75%) attained a bone marrow morphological complete remission (CR) at the end of induction (EOI), three of them with detectable minimal residual disease (MRD) that became undetectable after completing course II. Of the three patients who had ≥5% bone marrow blasts at EOI, one attained a CR with undetectable MRD at the end of course IA and another when switched to blinatumomab, and the third one died of progressive disease. No patient experienced early death. Five patients underwent allogeneic hematopoietic stem cell transplantation (HCT) while in CR (age range 46 to 60 years) and four remain in CR at last follow up (median 489 days, range 181 - 841), and one died of relapsed disease 67 days post-HCT. The other six patients who are receiving chemotherapy are alive and in remission at last follow up (median 272 days, range 52 - 639). The common adverse effects associated with PEG-Asp administration in this older group of patients were asymptomatic hypofibrinogenemia and depleted ATIII levels requiring supplementation (n=8), severe hyperbilirubinemia (n=1), and non-life-threatening venous thrombosis (n=1). Severe allergic reaction, clinical pancreatitis and cognitive impairment were not observed. Conclusion This age-based dose-adjusted PEG-Asp containing regimen was associated with an encouraging CR rate and a tolerable and manageable adverse event profile in this older patient population with significant co-morbidities. Treatment related mortality was 0%. Ten of 12 patients are currently in sustained remission, either with chemotherapy alone or following allogeneic HCT (median follow up 422 days, range 52 to 841 days). Treatment optimization for older patients with ALL utilizing an intensified, age-adjusted PEG-Asp containing induction and consolidation therapy regimen is associated with favorable outcomes and provides an effective bridge to potentially curative therapies such as HCT. Further prospective evaluation is under way. Table. Table. Disclosures Kremyanskaya: Incyte: Research Funding. Mascarenhas:Incyte: Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis: Research Funding; Promedior: Research Funding; Janssen: Research Funding; Celgene: Membership on an entity's Board of Directors or advisory committees; Merck: Research Funding; CTI Biopharma: Membership on an entity's Board of Directors or advisory committees, Research Funding; Roche: Research Funding.

scholarly journals Results of the Compassionate Program of Inotuzumab Ozogamicin for Adult Patients with Relapsed or Refractory Acute Lymphoblastic Leukemia in Spain

Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 4392-4392
Author(s):  
Josep-Maria Ribera ◽  
Olga Garcia ◽  
Pau Montesinos ◽  
Rebeca Rodríguez-Veiga ◽  
María García-Fortes ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Board Of Directors ◽  
Research Funding ◽  
Lymphoblastic Leukemia ◽  
Real Life ◽  
Early Death ◽  
Median Number ◽  
Inotuzumab Ozogamicin ◽  
Advisory Committees ◽  
Wbc Count

Abstract Background and objective. Inotuzumab ozogamicin (InO) was approved for patients (pts) with relapsed/refractory (R/R) CD22-positive acute lymphoblastic leukemia (ALL) based on the results of INO-VATE trial (Kantarjian et al, 2016). There are scarce studies evaluating the results of InO therapy in real life in similar pts as those from the INO-VATE trial. Our objective was to analyze the outcomes of pts included in the compassionate program of InO in Spain (June 2013-April 2018) before definitive approval. Patients and Methods. Inclusion criteria were age &gt;18 yrs., CD22+ ALL, R/R resistant to ≥2 previous lines, Ph+ ALL resistant/intolerant to TKI, ECOG ≤2 or &gt;2 if due to ALL, Bilirubin &lt;1.5 ULN, AST & ALT &lt;2.5 ULN, Creatinine ≤ 1.5 ULN. Exclusion criteria included mature B ALL, active CNS leukemia, chemotherapy in the two previous weeks, HSCT in the previous 6 months, grade ≥2 aGVHD or cGVHD, acute or chronic hepatitis B or C, HIV infection, VOD/SOS and antecedent chronic liver disease. Cycles of InO (0.8 mg/m 2 IV d1, and 0.5mg/m 2 IV on d8 and d15) were given every 21 days. Main outcomes: early death, CR/CRi, CR duration, PFS, OS and HSCT realization after InO. Results. 34 pts were included in the trial, 21 males, median age 43 yrs (range 19-73), ECOG &lt;2 22/26, WBC count 7.8 x10 9/L (0.3-388), pro B ALL 4/33, common 26/33, pre-B 3/33, Ph+ ALL 5/34 (15%), BM blast cells &gt;50% 15/33 (45%). 25/34 (73%) of pts received &gt;2 previous lines of therapy and 20 (59%) were previously transplanted. The duration of first CR remission before InO was &lt;12 months in 16/33 pts (49%) and 16/34 pts were refractory to the last treatment before InO. The median number of InO cycles was 2 (1-6). One pt withdrew the study before evaluation, 5 (15%) dead during therapy and 21 (64%) achieved CR/CRi. Ten pts (29%) were transplanted. With a median follow-up for alive patients after InO start of 26 months, the medians (95%CI) of DR, PFS and OS were 4.7 months (2.4-7.0), 3.5 (2.0-5.0) and 4.0 months (1.9-6.1), respectively. CR duration, PFS and OS were significantly shorter in refractory ALL (Figure 1A), pts with first CR (CR1) duration &lt;12 months (Figure 1B) and in those without previous HSCT. The number of previous lines of therapy did not show impact on outcome. The most frequent adverse events were hepatic (24%), infectious (18%), hematologic (15%) and gastrointestinal (9%). 3/10 transplanted patients showed grade 3-4 VOD/SOS. Grade 5 toxic events were hepatic (n=2), infection (n=2) and hemorrhage (n=1). Conclusion. The results in this series of compassionate use of InO for R/R ALL before approval for clinical use were slightly inferior to that of the INO-VATE trial. However, patients form this series had poorer risk factors than those included in that trial. The frequency and type of AE were similar to that of observed in the INO-VATE trial. Supported in part by grant 2017 SGR288 (GRC) Generalitat de Catalunya and "La Caixa" Foundation. Figure 1. Overall survival according to ALL status at inotuzumab start (A) and to duration of first complete remission (B) Figure 1 Figure 1. Disclosures Ribera: AMGEN: Consultancy, Research Funding, Speakers Bureau; SHIRE: Consultancy, Speakers Bureau; ARIAD: Consultancy, Research Funding, Speakers Bureau; TAKEDA: Consultancy, Research Funding, Speakers Bureau; NOVARTIS: Consultancy, Speakers Bureau; Pfizer: Consultancy, Research Funding, Speakers Bureau. Hernández-Rivas: Celgene/BMS: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees.

scholarly journals Successful of Chemo-Free Treatment with Dasatinib and Blinatumomab in a Pediatric EBF1-PDGFRβ Positive Acute Lymphoblastic Leukemia

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 5213-5213
Author(s):  
Fara Petruzziello ◽  
Giovanna Giagnuolo ◽  
Giovanni Cazzaniga ◽  
Giuliana Beneduce ◽  
Franco Locatelli ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Lymphoblastic Leukemia ◽  
Tyrosine Kinase ◽  
Board Of Directors ◽  
Lymphoblastic Leukemia ◽  
Poor Responder ◽  
Induction Phase ◽  
Advisory Committees ◽  
Hematopoietic Stem ◽  
Bone Marrow Evaluation

Abstract Recently, a novel subgroup of B Cell Precursor (BCP) Acute Lymphoblastic Leukemia (ALL), called Philadelphia-like (Ph-like) ALL, has been described. This high-risk group, despite the absence of BCR-ABL1 rearrangement, shows genomic abnormalities that result in aberrant expression of cytokine receptors genes or tyrosine-kinase-activating signaling. These patients are poor responder to conventional chemotherapy but potentially sensitive to Tyrosine-Kinase Inhibitors (TKIs). Herein we report the case of a 10 year-old girl who received diagnosis of precursor B-ALL on February 2018. She started therapy according to observational protocol ALL 2017 of the Italian Association of Pediatric Hemato-Oncology (AIEOP). After pre-phase, the patient resulted prednisone poor responder and continued induction therapy, including daunorubicin, vincristine, PEG-L-Asparaginase, prednisone and intrathecal methotrexate. Bone marrow evaluation showed persistence of disease on day 15 (88% of lymphoblasts) and 33 (60% of blasts) in flow cytometry. At the end of IA induction phase, Minimal Residual Disease (MRD) in RT-PCR showed high positivity (marker 1 = 7.2x10-1, marker 2= 8.11x10-1). At this time, further molecular studies, using RNA targeted next generation sequencing (PanCancer, Illumina), revealed the presence of EBF1-PDGFRβ gene fusion. Since the patient was resistant to conventional therapy and literature's evidences demonstrated potential sensitivity of EBF1-PDGFRβ to TKIs therapy, we decided to add dasatinib, a second generation TKI, to IB induction, with cyclophosphamide, cytarabine and 6-mercapthopurine. After one week of therapy, clinical course was complicated by Klebsiella Pneumoniae sepsis, followed by digestive hemorrhage. Since we retained that the hemorrhagic event could be related to dasatinib, the drug was temporarily discontinued. However, bone marrow evaluation, after only 10 days of dasatinib administration, showed hematologic remission (3% of lymphoblast) and MRD reduction >1 logarithm (markers 1=1-10-2 e markers 2= 9.9 x 10-3). Given the resistance to chemotherapy alone and the excellent response to dasatinib but its related toxicity in combination, we decided to start immunotherapy with blinatumomab, a bi-specific CD3-CD19 monoclonal antibody, alternated to dasatinib, in order to achieve MRD negativity before to proceed with allogeneic hematopoietic stem cell transplantation (HSCT) from HLA-identical sibling. The patient received 2 courses of blinatumomab for 28 days continuous infusion (15 mcg/mq days 1-28), interspersed by 15 days of dasatinib (60 mg/mq/day). After the first cycle the patient achieved complete hematological remission and MRD negativity. MRD negativity was confirmed after first course of dasatinib, second course of blinatumomab and second course of dasatinib. Dasatinib, given alone, was well tolerated and no serious adverse event were reported. Actually, the patient is undergoing HSCT by HLA-identical sister. To our knowledge, only few cases of EBF1-PDGFRβ ALL, treated with TKIs, are described in literature and this is the first in which MRD negativity was obtained with a sequential combination of dasatinib and blinatumumomab, a chemo-free approach, showing efficacy and good tolerability. This case highlights also that screening for targetable lesions at diagnosis or in case of resistance to induction phase is mandatory to identify patients who might benefit from alternative therapies as TKIs, immunotherapy or their combination. A longer follow-up is required to definitively establish the long-term efficacy of this biological approach in our patient. Nevertheless, it is interesting to speculate that alternative treatment with TKIs or immunotherapy could avoid, in the future, an intensive chemotherapy, or probably a transplant approach in selected patients, in order to achieve a durable cure in these Ph-like patients. Disclosures Locatelli: Bellicum: Consultancy, Membership on an entity's Board of Directors or advisory committees; bluebird bio: Consultancy; Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees; Miltenyi: Honoraria; Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees. Parasole:Baxalta: Membership on an entity's Board of Directors or advisory committees; behring: Consultancy; jazz: Honoraria, Speakers Bureau.

scholarly journals Comparative Somatic Mutational Profiling of CD34+ Hematopoietic Precursors (HSC) and Circulating Endothelial Cells (CEC) in Patients with Primary Myelofibrosis (PMF)

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 1684-1684
Author(s):  
Mirko Farina ◽  
Simona Bernardi ◽  
Nicola Polverelli ◽  
Camilla Zanaglio ◽  
Michele Malagola ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Board Of Directors ◽  
Research Funding ◽  
Primary Myelofibrosis ◽  
Driver Mutation ◽  
Circulating Endothelial Cells ◽  
Advisory Committees ◽  
Hematopoietic Stem ◽  
Female Ratio ◽  
Healthy Control

INTRODUCTION Endothelial cells (EC) play an important role in thrombosis and are increased in frequency in Myeloproliferative Neoplasms (MPN). Notably, the JAK2V617F mutation has been identified in micro-laser-dissected EC in peripheral vasculature (Sozer, 2009) and is present in a subset of endothelial progenitor cells (Teofili, 2011). Primary myelofibrosis (PMF) is also characterized by increased bone marrow vascularity. These data suggest that PMF clones could derive from a common precursor shared between CD34-hematopoietic stem cells (HSC) and EC. We explored this hypothesis with a prospective study aimed at comparing the mutational profiles of paired Circulating Endothelial Cells (CEC) and HSC in patients (pts) with PMF. METHODS 14 PMF pts not previously treated with JAK2 inhibitors, along with one healthy control, were enrolled in the MyCEC0617 study beginning in 2018. The study was approved by the local Ethical Committee and all pts gave written informed consent. HSC were selected using CD34+ immunomagnetic bead-column separation. CEC were detected using the CellSearch system, which uses immunomagnetic selection incorporating ferrofluid nanoparticles and fluorophore-labelled antibodies. The markers CD146, CD105, CD45, and DAPI were used to isolate CEC. We identified cells as CEC when we observed characteristic morphological features and a surface immunophenotype of CD146+, CD105 +, DAPI+ and CD45-. Putative CEC were then sorted using the DEPArray system, which uses a combination of di-electrophoresis technology and high-quality image-based cell selection to manipulate individual cells. Sequencing data was then assessed with the MiSeq Illumina NGS platform using a 54-gene custom panel focused on genes mutated in PMF. The cutoffs to confirm the presence of the mutations were identification of mutant alleles in 30 and 50 reads both in forward and reverse, for HSC and CEC, respectively. RESULTS The characteristics of pts are reported in Figure 1. Median age of pts was 69.5 ys (35-85) and male/female ratio was 9:6. Median time from diagnosis to sample collection was 4 (1-211) months. 2/14 pts had had a previous thrombosis, 78% had splenomegaly, and 29% presented with constitutional symptoms. Considering the molecular profile, 9 pts were JAK2V617F mutated, 3 were CALR mutated, and 1 was MPLW515L positive. 2 pts were triple-negative. Most of the pts (7) presented with an Intermediate-1 DIPSS score, while 5 were intermediate-2, and 2 were high risk DIPSS. CEC were collected for 12 of 15 subjects (including the normal control). No significative differences were found between pts from whom we isolated CEC and those we did not successfully recover CEC. A median of 26 (1-122) CEC in 4 ml of peripheral blood were recovered. Notably, no mutations were found in the CEC or HSC from healthy control whereas molecular alterations were discovered both on CEC and HSC in 11 pts (Fig. 1). The previously-identified MPN driver mutation was identified in MF HSC (except for one JAK2-mutated pt and for all CALR-mutated pts, consistent with the limitations of NGS in detecting these lesions). Interestingly, PMF pts demonstrated both shared and different mutations when comparing mutational profiles of HSC and CEC. In particular, 8 of 11 pts shared at least one mutation between EC and HSC. 2 pts harbored the same driver mutation (JAK2V617F), together with ABL1, IDH1, TET2, and ASXL1, respectively. The most frequently mutated genes shared between both CEC and HSC were JAK2, ASXL1, TET2, NOTCH1, and SRSF2. All of these mutations were observed as shared clonal events in at least 2 cases. We also identified individual paired HSC/CEC with shared mutations in TP53, KIT, KMT2A, IDH1, WT1 and ABL1. One pt shared 4 mutations between HSC and CEC, while 4 and 2 pts shared 1 and 2 mutations, respectively. CONCLUSION HSC and EC in PMF have in common one or more gene mutations implicated in the pathogenesis of PMF. For the first time, we show that mutations other than JAK2 can be identified in EC, and in most instances (70% of pts), these mutations are shared between CEC and HSC. Moreover, we present an analysis of mature cells of endothelial lineage including to the CEC. These preliminary findings using primary pts samples support the notion that PMF-initiating cells may be derived from a common HSC/EC precursor. Further data are needed to validate these findings and provide a rationale for additional studies exploring the antecedent cell of origin in MPN. Disclosures D'Adda: Pfizer: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees; Incyte: Membership on an entity's Board of Directors or advisory committees. Rossi:Celgene: Membership on an entity's Board of Directors or advisory committees; Amgen: Membership on an entity's Board of Directors or advisory committees; Gilead: Membership on an entity's Board of Directors or advisory committees; Sanofi: Membership on an entity's Board of Directors or advisory committees; Abbvie: Membership on an entity's Board of Directors or advisory committees; Pfizer: Membership on an entity's Board of Directors or advisory committees; Jazz: Membership on an entity's Board of Directors or advisory committees; Astellas: Membership on an entity's Board of Directors or advisory committees; Novartis: Honoraria; Mundipharma: Honoraria; BMS: Honoraria; Sandoz: Honoraria; Daiichi-Sankyo: Consultancy; Roche: Membership on an entity's Board of Directors or advisory committees; Janssen: Membership on an entity's Board of Directors or advisory committees. Levine:Qiagen: Membership on an entity's Board of Directors or advisory committees; Novartis: Consultancy; Loxo: Membership on an entity's Board of Directors or advisory committees; Roche: Consultancy, Research Funding; Prelude Therapeutics: Research Funding; Isoplexis: Membership on an entity's Board of Directors or advisory committees; C4 Therapeutics: Membership on an entity's Board of Directors or advisory committees; Imago Biosciences: Membership on an entity's Board of Directors or advisory committees; Gilead: Consultancy; Lilly: Honoraria; Amgen: Honoraria; Celgene: Consultancy, Research Funding.

scholarly journals Ramp-up Treatment Strategy in Philadelphia Positive Acute Lymphoblastic Leukemia Is Associated with Deep Molecular Remissions and Favorable Outcomes

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 5120-5120
Author(s):  
Nabiel A. Mir ◽  
Charles Bodine ◽  
Denise Peker ◽  
Kimo Bachiashvili ◽  
Pankit Vachhani ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Median Time ◽  
Research Funding ◽  
Residual Disease ◽  
Lymphoblastic Leukemia ◽  
Philadelphia Chromosome ◽  
Fish Analysis ◽  
Intensive Chemotherapy ◽  
Advisory Committees

Introduction: The advent of Tyrosine Kinase Inhibitors (TKI) changed the treatment paradigm of Philadelphia chromosome Positive (Ph+) Acute Lymphoblastic Leukemia (ALL). Different treatment strategies exist including combinations of TKI with steroids or with intensive multi-agent chemotherapy regimens. We present here our institutional experience of a "ramp-up" strategy using dasatinib with steroids as induction followed by the combination of dasatinib plus the intensive chemotherapy schema of HyperCVAD alternating with HD MTX/cytarabine. Methods: We performed a retrospective review of the electronic medical records of adult patients (pts) treated in our institution for Ph+ ALL. We collected and analyzed data for pts with Ph+ ALL treated with dasatinib and steroids followed by dasatinib plus HyperCVAD alternating with HD-MTX/cytarabine. Results: We identified 25 pts that were treated with the ramp-up treatment approach between 2014-2019. The median age at diagnosis was 45 years old (range 21-65 years old). Fifty-two percent were women and 60% white. Diagnosis of Ph+ ALL was based on FISH analysis with karyotype being positive for the Ph+ chromosomal abnormality in 64% pts; 8% of pts had cryptic translocation and rest not available ( N/A). Sixty percent of pts had p190 Bcr/Abl transcript, 16% had p210 and 8% N/A (including 2 pts that Bcr/Abl transcript was undetectable despite morphological disease). The CD20 by multicolor flow cytometry (MFC) was positive in 16%, heterogenous in 20%, and low/negative in the rest (64%). Eighty-four percent of pts had a WBC less than 50K/cmm at diagnosis; median WBC was 17K/cmm (range 0.8 -131.4 K/cmm). All pts except one received induction with initial dose of 140 mg of dasatinib daily; 84% received prednisone and rest received dexamethasone followed by prednisone. For those pts on dasatinib 140 mg daily, only 2 required adjustment/brief interruption during induction. Eighty-four percent of pts achieved morphological CR, 8% CRp, and 8% had residual ALL post induction with dasatinib and steroids. Of the 23 pts achieving CR/CRp, 34% had minimal residual disease (MRD) by MFC, 26% by FISH analysis and 86% by PCR for Bcr/Abl transcript (21 evaluable pts). Median time from initiation of induction to response bone marrow assessment was 26 days (range 14 - 40 days;75% percentile 28 days). All 25 pts proceeded with HyperCVAD alternating with HD MTX/cytarabine, and the dose of dasatinib used was 70 mg daily (aside from 1 patient who received 100 mg daily). Median time from induction to initiation of HyperCVAD was 34 days (range 17-68 days). The median number of courses (HyperCVAD or HD MTX/cytarabine) for the 25 pts was 3. The 13 pts that ultimately went to transplant in CR1 had also a median of 3 courses. Sixty percent of pts ultimately underwent allo-HSCT. Median time to allo-HSCT from initiation of HyperCVAD was 106 days (range 66-294; 75% percentile 163 days). Overall, all pts achieved CR/CRp with 68% of pts (from the 22 evaluable for molecular remission) attaining also undetectable Bcr/Abl PCR (complete molecular response) as a best response. All pts with post-induction residual disease achieved CR with the dasatinib/intensive chemotherapy combination. Twenty percent of pts had morphological relapse; two pts were treated for non-morphological relapse. Median time to morphological relapse was 148 days from induction (range 106-796 days). The median follow-up was 20.4 months (range 1.5 -58.4; 75% percentile 36.8 months). At last follow up 72% of pts were alive; median OS (not censored for allo-HSCT) was not reached (figure 1). There were no deaths in the first 60 days. Conclusion: Induction therapy with dasatinib and steroids was overall well tolerated and was associated with a very favorable CR/CRp rate, with only a minority of pts requiring treatment adjustment. Subsequent consolidation with dasatinib and HyperCVAD alternating with HD-MTX/cytarabine (+/- allo-HSCT) led to deep remissions in 68% of the pts. Sixty percent of pts underwent allo-HSCT and the median OS was not reached and with no deaths in the first 60 days. Hence, induction therapy with dasatinib and steroids followed by dasatinib plus HyperCVAD alternating with HD-MTX/cytarabine can be considered for Philadelphia chromosome-positive ALL pts to achieve deep remissions with low early mortality. Disclosures Vachhani: AbbVie: Membership on an entity's Board of Directors or advisory committees; Agios: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Astellas: Speakers Bureau; Daiichi Sankyo: Membership on an entity's Board of Directors or advisory committees; Incyte: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau. Costa:Fujimoto Pharmaceutical Corporation Japan: Other: Advisor; Amgen: Consultancy, Honoraria, Research Funding, Speakers Bureau; Janssen: Research Funding, Speakers Bureau; Celgene: Consultancy, Honoraria, Research Funding; Sanofi: Consultancy, Honoraria, Speakers Bureau; GSK: Consultancy, Honoraria, Research Funding; Abbvie: Consultancy; Karyopharm: Consultancy. Erba:Amgen, Celgene, Daiichi Sankyo, ImmunoGen, Incyte, Jazz Pharmaceuticals, Millennium, Novartis, Ono, Pfizer, Seattle Genetics, Sunesis: Consultancy; Celgene, Incyte, Novartis: Speakers Bureau; Agios, Amgen, Astellas Pharma, Daiichi Sankyo, ImmunoGen, Janssen, Jazz Pharmaceuticals, Juno, Millennium, Seattle Genetics: Research Funding. Papadantonakis:Agios: Consultancy, Honoraria.

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