ALBERT

Description: Despite recent advancements, approximately 50% of patients with acute myeloid leukemia (AML) do not respond to induction therapy (primary induction failure, PIF) or relapse after

Description: Background: In standard risk APL, ATRA+ATO combinations (without CT) are at least as effective as classical ATRA + anthracycline based chemotherapy (CT) while being less myelosuppressive (Lo Coco, NEJM 2014, Burnett, Lancet Oncol, 2015). In high risk APL (WBC〉 10G/l), it is still unclear if CT can be avoided or greatly reduced, but addition of ATO to ATRA + CT reduces relapses (Powell, Blood 2010). In a randomized trial (APL2006 trial) in high-risk APL patients (pts) who received ATRA + CT induction treatment, we evaluated the addition of ATO to CT during consolidation. Methods: Between 2006 and 2015, newly diagnosed APL pts 10 G/L, after an induction of ATRA 45mg/m2/d until CR with Idarubicin (Ida) 12 mg/m2/dx3 and AraC 200mg/m2/dx7, were randomized for consolidation between CT and CT+ATO. The CT group (standard group) received a first consolidation with Ida 12 mg/m2/dx3 and AraC 200mg/m2/dx7, a second consolidation with Ida 9 mg/m2/dx3 and AraC 1g/m2/12h x4d, and 2-year maintenance with intermittent ATRA and continuous 6 MP + MTX. The CT+ATO group received the same treatment except that ATO 0.15 mg/Kg/d d1 -25 was added during both consolidation courses. After a first interim analysis in Sept 2010, based on 81 pts, AraC was deleted from consolidation cycles of the CT+ ATO group. The primary endpoint was EFS from CR achievement. Results: 211 pts 10 G/L were included (after the exclusion of 8 diagnostic errors) in 58 centers. 95.7% achieved CR, 3.3% had early death and 1% resistant leukemia. 193 pts were randomized for consolidation, 97 in the CT and 96 the CT+ ATO groups. Pre-treatment characteristics were well balanced between the 2 groups. 7 pts (3 CT vs 4 CT+ATO) had relapsed (5-year cumulative incidence of relapse (CIR) of 2.5% vs 3.9%; p= 0.39) and 9 pts had died in CR :7 (7.8%), 2 (5.1%), 0 (0%) in the CT, CT (with AraC) + ATO, CT (without AraC) + ATO groups respectively (p=0.04). Causes of death in CR were bleeding (n=5), infection (n=2), previous cancer relapse (n=2). One patient in the CT+ATO arm developed AML/MDS. 5-year OS was 93% vs 94% (p=0.56) and 5-year EFS was 89% vs 93% (p=0.47) in the CT and CT+ATO groups, respectively. Omission of AraC (after the amendment) in the CT+ATO group did not increase CIR (5 year CIR 5.3% with and 3.3% without AraC, p=0.57). In the CT, CT (with AraC) + ATO, CT (without AraC) + ATO groups respectively, median time to ANC〉1 G/L after consolidation 2 was 22, 25 and 19 days (p50G/l was 24, 26 and 20 days (p

Description: Background L-asparaginase (L-ASP) is a key drug in the treatment of acute lymphoblastic leukemia (ALL). However the toxicity profile, especially hypersensitivities up to acute allergic reactions is a major drawback. GRASPA (eryaspase (proposed INN) or E-Coli L-Asparaginase encapsulated into red blood cells) is a new product under development with the aim of improving the tolerance of this enzyme. Asparagine is actively transported through the membrane of red blood cells (RBC) where it is hydrolyzed by the encapsulated L-ASP, the erythrocytes acting as "bioreactors". The RBC membrane shields against the anti-L-ASP antibody then avoiding binding to encapsulated L-ASP. Recently, a Phase III pivotal study of GRASPA in combination with COOPRALL chemotherapy protocols in patients with relapsed ALL demonstrated highly significant safety profile and clinical activity compared to control. However, there is an unmet medical need for patients who cannot receive current formulations of L-ASP. An expanded access program has recently been initiated in France to provide access for treatment with GRASPA in patients who are unable to receive other forms of L-ASP. Methods: This is a non randomized multicenter open label study, currently initiated in France. The primary objective of the EAP is to evaluate the tolerability of GRASPA. Patients under 55y of age presenting with de novo, relapsed or refractory ALL who are at risk to receive any other available L-ASP formulation are enrolled into this program. Patients with known allergic reactions to E.Coli L-ASP are also eligible. GRASPA is administrated every 2 to 3 weeks at a dose equivalent to 150 IU/kg of L-ASP during all chemotherapy courses intended to contain an asparaginase. Chemotherapy protocols are given according to the Investigator's choice. Patients are assessed regularly for safety and tolerability. The primary endpoint is tolerability; Key secondary endpoints include asparaginase activity, asparagine depletion, and clinical remission rates. An independent Safety Monitoring Board (DSMB) is set up, which will assess toxicities on yearly basis. Results As of time of June 2015, 13 patients were enrolled into the program. The first DSMB meeting reviewed the outcome of the first 7 patients enrolled into the program. Of the 7 pts (range 3 - 49 years), 5 males and 2 females were enrolled. Four pts presented with refractory disease and 3 with relapse, with all patients had evidence of allergies to 2 prior asparaginases (double allergies). There were 2 pts presenting with limiting toxicities, in the form of myelosupression, and streptococcal infection. There was no modification to the protocol recommended by the first DSMB An updated safety and clinical activity information on all patients will be provided. Conclusion: The EAP provides a potential treatment alternative for ALL patients, who are unable, or at risk of developing hypersensitivity reactions to prior asparaginases. The initial results from this program suggests that GRASPA is well tolerated, and may have a potential benefit in patients with double allergies. The program will be expanded to other European countries Disclosures Bertrand: ERYTECH Pharma: Consultancy, Membership on an entity's Board of Directors or advisory committees. Dombret:Amgen: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Recher:Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Chugai: Research Funding; Amgen: Research Funding; Sunesis: Consultancy, Membership on an entity's Board of Directors or advisory committees. Salako:ERYTECH Pharma: Employment. Godfrin:ERYTECH Pharma: Employment. El Hariry:ERYTECH Pharma: Employment.

Description: Introduction. AML standard intensive induction chemotherapy ("3+7" or equivalent) combined with wide spectrum antibiotics can dramatically alter the composition of the gut microbiota, leading to dysbiosis which is characterized by loss of microbial diversity. Such dysbiosis status can promote a pathological condition involving uncontrolled local immune responses, systemic inflammation and increased incidence of adverse events. The development of FMT-based drugs to restore microbial communities could offer novel therapeutic possibilities to reduce such adverse events and potentially improve outcomes in AML. We therefore conducted this single arm prospective phase I/II multicenter trial (NCT02928523) to evaluate the use of a FMT-based drug in association with AML induction treatment to restore the gut microbiota diversity. Patients and methods. A total of 62 consecutive patients aged between 24 and 69 years old with a diagnosis of de novo AML were screened in 7 French sites. At time of admission and AML diagnosis (Step 1=S1), patients' faeces were collected, rigorously screened, prepared following a standardized process, and stored at -80°C until later administration. The drug was administered as an enema after hematopoietic recovery (S2) and before consolidation chemotherapy (Conso). The primary endpoint was the recovery of at least 70% of microbiota diversity (based on the Simpson index) after drug administration and the reduction of multidrug resistant bacteria carriage. Blood and feces samples were collected at S1, S2, and around 10 days post-FMT before Conso (S3). Microbiome diversity restoration was assessed by metagenomics analysis through Illumina HiSeq shotgun sequencing. Antibiotic resistance gene carriage (ARGC, also known as resistome) was evaluated through mapping of readouts on the MEGARES database. Secondary objectives included safety and analysis of host response with assessment of blood and fecal markers by ELISA and Luminex. Results. Overall, 25 patients were actually treated with FMT, and 20 were included in the per-protocol population. Induction Chemotherapy (IC) induced a dramatic shift in microbial communities, with a significant 42.3% decrease of mean α-diversity Simpson index between S1 and S2 at species level (0.85 to 0.50; p

Description: Key Points The prognostic impact of time from diagnosis to treatment in AML is offset by other factors such as age, secondary AML, or genetic abnormalities. Waiting a short period of time to characterize leukemias better and design adapted treatments at diagnosis seems possible.

Description: Receptor or nonreceptor tyrosine kinases (TKs) are known to play an important role in leukemogenesis. Here we studied the level of protein tyrosine phosphorylations in a series of fresh AML samples and evaluated the effect of TK inhibitors. Compared with normal hematopoietic progenitors, a high level of tyrosine phosphorylation was detected in most acute myeloid leukemia (AML) samples. The Src family kinases (SFKs) appeared constitutively activated in most cases, including in the CD34+CD38−CD123+ compartment as revealed by the level of phosphorylated tyrosine 416. Lyn was the major SFK family member expressed in an active form in AML cells where it was abnormally distributed throughout the plasma membrane and the cytosol as opposed to normal hematopoietic progenitors. The SFK inhibitor, PP2, strongly reduced the global level of tyrosine phosphorylations, inhibited cell proliferation, and induced apoptosis in patient samples without affecting normal granulomonocytic colony forming units. Moreover, silencing Lyn expression by small interfering RNA in primary AML cells strongly inhibited proliferation. Interestingly, a link between Lyn and the mTOR pathway was observed as PP2 and a Lyn knockdown both affected the phosphorylation of mTOR targets without inhibiting Akt phosphorylation. Lyn should be considered as a novel pharmacologic target for AML therapy.

Description: Abstract 1701 Poster Board I-727 Introduction There are still controversies about the impact of erythropoiesis stimulating agents (ESA) on survival of patients with malignancies. The Groupe d'Etude des Lymphomes de l'Adulte (GELA) has conducted a multicentric prospective randomized phase III study to evaluate efficacy and safety of Darbepoetin alfa (DA) in elderly patients with DLBCL treated by immunochemotherapy. Here, we report the results of the planned interim analysis, held after the inclusion of the first 202 patients, with a median follow-up of 24 months. Patients and methods: Patients between 60 and 80 years old with DLBCL and aaIPI ≥ 1 were eligible. They were firstly randomized between two immunochemotherapy regimens combining Rituximab and CHOP given every 2 (R-CHOP14) or 3 weeks (R-CHOP21) for 8 cycles. They were subsequently randomized between an investigational arm with DA (Arm 1) given in order to maintain hemoglobin level between 13 and 15 g/dL and a conventional arm (Arm 2) with usual management of chemotherapy-induced anemia, including red blood cell transfusions and ESA according to usual practices. The objective was to evaluate the efficacy of DA in association with chemotherapy (R-CHOP) as measured by the EFS at 2 years, events being defined as death from any cause, relapse for complete responders and unconfirmed complete responders, progression during or after treatment and changes of therapy during allocated treatment. Secondary objectives were OS, PFS, DFS, response rate and analysis of toxicity. Results 202 patients were included and 201 received study treatment ; 90 patients were randomized in DA group and 111 in conventional treatment group. Median age was 72 years. Patients' characteristics were similar in both arms with a slightly higher proportion of patients with aaIPI 2-3 in conventional arm : 68% compared to 56% (p=NS). Median hemoglobin (Hb) level at randomization was 12.2 g/dL. The median Hb level during treatment in DA arm was 11.9 g/dL and 10.7 g/dL in conventional arm respectively. Overall, 41 patients in conventional group received at least one dose of ESA during treatment. Eighteen percent of patients in DA group had at least one episode of Hb 〉 15 g/dL during treatment compared to 6% in conventional treatment group. Response rate (CR+CRu) after treatment was similar in both groups (69% in DA arm, 72% in conventional arm). Two-year EFS was 59% in DA arm compared with 49% in conventional arm (p=NS). A similar trend was observed for 2-year PFS (61% vs 51%), 2-year DFS (71% vs 56%) and 2-year OS (74% vs 63%) (p=NS for all). Grade 3-4 hematological toxicity was similar in the two groups. In contrast, proportion of patients receiving at least 1 red cell transfusion was higher in conventional arm (49% versus 36%). A total of 288 AEs were reported as serious (130 in DA group and 158 in symptomatic treatment group), concerning 122 patients (61%). Most SAEs were related to infectious complications. The rate of thromboembolic SAEs (composite criteria with pulmonary embolism, venous thrombosis from any site, coronary disease including myocardial infarction and cerebrovascular event) is slightly higher in DA group (13 SAEs) than in conventional arm (9 SAEs). Finally, the number of patients who died because of treatment toxicity was comparable in DA group (6 patients, 7%) and in conventional treatment group (7 patients, 6%). Conclusions The results of interim analysis of the LNH 03-6B provide encouraging results about efficacy and safety of a prophylactic use of DA in this population. It should be confirmed by the final analysis of the LNH03-6B trial which is planned in 2010. Disclosures No relevant conflicts of interest to declare.

Description: Background: Somatic heterozygous mutations in isocitrate dehydrogenase 1 (IDH1) occur in 6-10% of acute myeloid leukemia (AML) cases. Ivosidenib (AG-120) is a first-in-class, oral, targeted inhibitor of the mutant IDH1 (mIDH1) enzyme, and is FDA-approved for the treatment of mIDH1 newly diagnosed AML in patients ≥75 years of age or who have comorbidities precluding the use of intensive induction chemotherapy, and for the treatment of mIDH1 relapsed/refractory AML. In vitro, combination treatment of leukemic cell lines with ivosidenib and the hypomethylating agent azacitidine enhanced cellular differentiation and apoptosis compared with either agent alone. In an ongoing phase 1b study (NCT02677922), 23 treatment-naïve patients with mIDH1 AML were treated with ivosidenib 500 mg once daily (QD) in combination with subcutaneous azacitidine 75 mg/m2 for 7 days (in a 28-day schedule). Patients had a median age of 76 years (range 61-88), 12 patients (52%) were ≥75 years of age, and 12 of 23 were female. De novo and secondary AML was present in 15 (65.2%) and 8 (34.8%) patients, respectively. As of February 19, 2019, 10 patients (43.5%) remained on study treatment. Patients have been treated for a median of 15 cycles (range 1-30), and the spectrum of adverse events has been consistent with monotherapy experiences with ivosidenib or azacitidine. Investigators reported 4 cases of IDH differentiation syndrome. Of those, 3 were deemed to be serious adverse events, but all 4 cases resolved. The overall response rate (ORR) was 78.3% (18 of 23 patients), including 60.9% (14 of 23 patients) who achieved a complete remission (CR). Median time to response was 1.8 months (range 0.7-3.8) and to CR was 3.7 months (range 0.8-15.7); median response duration has not been reached. Preliminary mIDH1 clearance in bone marrow mononuclear cells was observed in 69% of patients (11 of 16) with CR or CR with partial hematologic recovery (CRh), including 71% (10 of 14) with CR. Methods: AGILE is a global, double-blind, randomized, placebo-controlled, phase 3 trial in patients with previously untreated mIDH1 AML who are not candidates for intensive therapy (NCT03173248). Currently, a total of 172 study centers in North America, South America, Asia, and Europe are participating in the study. Patients are being randomized 1:1 to receive either ivosidenib 500 mg QD + azacitidine 75 mg/m2 subcutaneously or intravenously for 7 days in 28-day cycles, or matched placebo + azacitidine. Randomization is stratified by region and by de novo versus secondary AML. Key eligibility criteria include patients with previously untreated mIDH1 AML (according to WHO criteria) who are not candidates for or not willing to receive intensive chemotherapy, who have an ECOG performance status 0-2, and who have received no prior treatment with a hypomethylating agent or mIDH1 inhibitor. Patients with an antecedent hematological disorder, such as myelodysplastic syndrome or myeloproliferative neoplasms, can be included if not pretreated with an mIDH1 inhibitor or hypomethylating agent. The primary outcome measure is overall survival, and key secondary outcome measures include event-free survival, CR rate, CR+CRh rate, and ORR. AGILE is currently open for enrollment globally. Disclosures Fernandez: Pfizer: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Daiichi Sankyo: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Teva: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Janssen: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Novartis: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Karyopharm: Membership on an entity's Board of Directors or advisory committees, Research Funding; Abbvie: 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. Recher:Abbvie: Honoraria, Membership on an entity's Board of Directors or advisory committees; Astellas Pharma: Membership on an entity's Board of Directors or advisory committees, Research Funding; Amgen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Agios: Research Funding; Celgene: Research Funding; chugai: Research Funding; Daiichi-Sankyo: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Jazz Pharmaceuticals: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Miyazaki:Chugai: Research Funding; Otsuka: Honoraria; Novartis: Honoraria; Nippon-Shinyaku: Honoraria; Dainippon-Sumitomo: Honoraria; Kyowa-Kirin: Honoraria. Gianolio:Agios Pharmaceuticals, Inc.: Employment, Equity Ownership. Daigle:Agios: Employment, Equity Ownership. Winkler:Agios: Employment. Zhang:Agios: Employment, Equity Ownership; Agios: Employment, Equity Ownership. Paschka:Abbvie: Other: Travel expenses; Pfizer: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; BMS: Other: Travel expenses, Speakers Bureau; Jazz: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Novartis: Membership on an entity's Board of Directors or advisory committees, Other: Travel expenses, Speakers Bureau; Agios: Membership on an entity's Board of Directors or advisory committees; Astellas: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees, Other: Travel expenses, Speakers Bureau; Janssen: Other: Travel expenses; Amgen: Other: Travel expenses; Sunesis: Membership on an entity's Board of Directors or advisory committees; Astex: Membership on an entity's Board of Directors or advisory committees, Travel expenses; Takeda: Other: Travel expenses; Otsuka: Membership on an entity's Board of Directors or advisory committees. OffLabel Disclosure: Ivosidenib (AG-120) is an isocitrate dehydrogenase-1 (IDH1) inhibitor indicated for the treatment of acute myeloid leukemia (AML) with a susceptible IDH1 mutation as detected by an FDA-approved test in: 1)Adult patients with newly-diagnosed AML who are more than 75 years old, or who have comorbidities that preclude use of intensive induction chemotherapy 2)Adult patients with relapsed or refractory AML. It is being investigated in clinical trials in combination with azacitidine in patients with DH1-mutant newly diagnosed AML.