Phase 1b Evaluation of the Safety and Efficacy of a 30-Minute IV Infusion of Carfilzomib In Patients with Relapsed and/or Refractory Multiple Myeloma

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 3024-3024 ◽  
Author(s):  
Kyriakos Papadopoulos ◽  
David Samuel diCapua Siegel ◽  
Seema B. Singhal ◽  
Jeffrey R. Infante ◽  
Edward A. Sausville ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Peripheral Blood ◽  
Research Funding ◽  
Mononuclear Cells ◽  
Single Agent ◽  
Proteasome Inhibition ◽  
Response Assessment ◽  
Phase 2 ◽  
Peripheral Blood Mononuclear ◽  
Phase 1B

Abstract Abstract 3024 Background: Carfilzomib (CFZ) is a novel, highly selective, epoxyketone proteasome inhibitor. In two separate Phase 2 trials in patients (pts) with relapsed and/or refractory (R/R) multiple myeloma (MM), single-agent CFZ administered as an IV bolus over 1–10 minutes has demonstrated durable activity at 20/27 mg/m2 and is well-tolerated with no clinically significant cumulative toxicity. In rats, significantly improved tolerability of CFZ was obtained following administration as a 30 min infusion as compared to a rapid IV bolus. Notably, a dose of 48 mg/m2 via IV bolus resulted in 50% lethality, compared to minimal toxicity without lethality at the same dose via a 30 min infusion. The reduced toxicity with 30-min infusion may reflect the role of Cmax (45 μM for bolus vs. 1.5 μM for infusion), since proteasome inhibition in blood and tissue was equivalent in both groups. Here we report on the results of administration of CFZ as a 30-minute IV infusion in a Phase 1b study in pts with R/R MM. The goals of this study are to determine the maximum recommended dose for infusion, safety, efficacy, pharmacokinetics (PK), and pharmacodynamic (PD) parameters. Methods: This Phase 1b trial is enrolling pts with R/R MM after ≥2 prior treatment failures. CFZ is given as a 30-minute IV infusion on days (D) 1, 2, 8, 9, 15, and 16 of a 28-day cycle (C) until progression. Dosing in all cohorts is initiated at 20 mg/m2 for the first two doses, with subsequent escalation to 36, 45, 56, or 70 mg/m2. Dose escalation follows standard 3+3 rules. Dexamethasone (4 mg for doses up to 45 mg/m2) is given prior to each infusion, with 8 mg given at higher doses. Responses by IMWG Uniform Response Criteria are measured at every C. Plasma samples for PK analysis and peripheral blood samples for PD analysis were obtained from pts at C1D1 (20 mg/m2) and C2D1 (all dose cohorts). Results: To date, 16 pts with R/R MM have been enrolled in the Phase 1b infusion study (4 at 36 mg/m2; 3 at 45 mg/m2; 7 at 56 mg/m2 and 2 at 70 mg/m2). Pts have remained on study for a median of 4 cycles (range 1–13+). Dose Limiting Toxicity (DLT) was observed in both pts treated at 70 mg/m2: reversible Grade (G) 3 renal failure in one pt within 24-hours following his first dose at 70 mg/m2 (C1D8); reversible G3 fatigue with fevers 4 days following four doses of 70 mg/m2 (C1 D20). Both pts were successfully rechallenged and continue on treatment. Seven patients have started dosing at 56 mg/m2; to date, one DLT (reversible G3 hypoxia with fevers) was observed. Thirteen pts are evaluable for efficacy (2 pts withdrew prior to 1st response assessment; 1 pt is too early to assess). Responses, time on study and prior regimens are detailed in the following table. Preliminary PK analysis demonstrates that the Cmax with 30-minute infusion is lower than obtained with a 5–10 minute IV bolus of the same dose. Inhibition of proteasome activity in red blood cells (RBCs) and peripheral blood mononuclear cells (PBMCs) was >80% at 20 mg/m2 and >90% at 36 mg/m2 and above. Common adverse events (AEs) with CFZ delivered as a 30-minute infusion have included fatigue, fevers, myalgias, diarrhea, nausea, thrombocytopenia, and reversible elevations in serum creatinine. There have been no episodes of worsening of baseline peripheral neuropathy or hepatotoxicity. Conclusions: In pts with R/R MM, single-agent CFZ as 30-minute IV infusion is both active and well-tolerated at doses ≥36 mg/m2; the dose level of 56 mg/m2 is being expanded as the recommended phase 2 dose on this schedule. Responses were seen in 8 out of 13 evaluable MM pts, including three VGPRs in pts who had received 5–7 prior regimens. Similar to animal studies, improved safety outcomes in MM patients can be achieved with near complete proteasome inhibition when CFZ is administered as a 30-minute infusion. An additional schedule of CFZ using weekly dosing (30-minute infusion for 5 weeks out of every 6) will be investigated in this trial. Disclosures: Papadopoulos: Onyx Pharmaceuticals: Consultancy, Research Funding. Siegel:Millenium: Consultancy, Honoraria; Celgene: Consultancy, Honoraria. Singhal:Celgene: Speakers Bureau; Takeda/Millenium: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Onyx: Research Funding. Gordon:Onyx Pharmaceuticals: Research Funding. Kauffman:Onyx Pharmaceuticals: Employment. Woo:Onyx Pharmaceuticals: Employment. Lee:Onyx Pharmaceuticals: Employment. Bui:Onyx Pharmaceuticals: Employment. Hannah:Onyx Pharmaceuticals: Consultancy.

Phase 1b Results of a Phase 1b/2 Study of Obinutuzmab, Ibrutinib, and Venetoclax in Relapsed/Refractory Chronic Lymphocytic Leukemia (CLL)

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 639-639 ◽  
Author(s):  
Jeffrey A. Jones ◽  
Jennifer Woyach ◽  
Farrukh T. Awan ◽  
Kami J. Maddocks ◽  
Thomas Whitlow ◽  
...  
Keyword(s):  
Adverse Events ◽  
Board Of Directors ◽  
Research Funding ◽  
Single Agent ◽  
Objective Response ◽  
Response Assessment ◽  
Phase 2 ◽  
Advisory Committees ◽  
Once Daily ◽  
Phase 1B

Abstract BACKGROUND Venetoclax(VEN), a once daily oral inhibitor of BCL2, has demonstrated high response rates and acceptable toxicity in patients with relapsed or refractory (R/R) CLL both as a single agent and in combination with the anti-CD20 monoclonal antibodies rituximab and obinutuzumab (formerly GA-101, G), where minimal residual disease (MRD) negative responses have been observed in the majority of patients. Ibrutinib (IBR), a once daily oral inhibitor of the Brutontyrosine kinase, likewise induces remissions in the majority of treated patients, but complete response (CR) is uncommon even after prolonged administration. Early genetic studies have demonstrated that BCL2 over-expression rescues BTK deficient XID murine B-cells from spontaneous apoptosis (J Immunol 1996), so we hypothesized that combination therapy would more efficiently achieve deep response endpoints. We report phase 1b results of a single-institution phase 1b/2 study of G, IBR, and VEN to characterize the safety and preliminary efficacy of the combination. METHODS Patients with CLL relapsed after or refractory to ≥1 prior therapy and who required treatment were eligible. Enrolled patients had ECOG ≤1 and preserved end-organ function, including creatinine clearance ≥50 mL/min/m2. Patients with chronic viral hepatitis infection, uncontrolled autoimmunecytopenia, active Richter transformation, and known cysteine-481 BTK mutation or clinical disease progression during treatment with a cysteine-481-binding BTK inhibitor were excluded. G, IBR, and VEN were started sequentially over the first 3 of fourteen 28-day cycles as detailed in the table. To establish the safety of VEN in combination with OBIN and IBR, VEN dose was escalated in 3 x 3 cohorts (100, 200, 400 mg) to a maximum planned dose of 400 mg daily. Dose limiting toxicity (DLT) was defined during the third cycle. Risk assessment for VEN dose ramp-up was conducted according to US prescribing information. Adverse events were assessed and graded using CTCAE v4.03. Response assessment according to IWCLL 2008 criteria, including bone marrow biopsy with 4-colorimmunophenotyping of marrow and peripheral blood (PB) for MRD, occurs after cycles 8 and 14. RESULTS Twelve R/R patients have been treated in the phase 1b portion of the trial. Median age was 57 years (range: 42-70) and median prior therapies was 1 (range: 1-7). Baseline genetic risk features includedunmutatedIGHV in 11 (92%),del(17p) in 1 (8%), del(11q) in 8 (67%), and complex abnormal karyotype in 5 (42%) patients. Tumor lysis (TLS) risk was low in 1 (8%), medium in 7 (58%), and high in 4 (33%) patients at study entry. In general, observed toxicities for the combination were consistent with those reported for the single agents. DLTs were not observed at any VEN dose level, establishing VEN 400 mg daily as safe in combination with standard doses of G and IBR. The most common grade ≥3 adverse events (regardless of attribution) were neutropenia (50%), lymphopenia (33%),hypertension(25%), and fatigue (17%). Grade 1/2 adverse events occurring in over half the patients included bruising (all grade 1, 83%), infusion related reaction (75%), hypertension (67%), headache (67%), hyperuricemia (all grade 1, 75%), hypocalcemia (75%), and diarrhea (all grade 1, 67%), AST and/or ALT elevation (58%), and rash (50%). No cases of either clinical or laboratory TLS were observed. All patients remain on therapy and 6 have reached response assessment after completing 8 cycles of therapy. All 6 have achieved objective response: 5 PR, including 1 MRD-negative in PB (VEN 100) and 1 MRD-negative in both PB and marrow (VEN 100), and 1 CR with MRD-negative PB and marrow (VEN 200). CONCLUSIONS G, IBR, and VEN can be safely administered in combination at doses standard for the treatment of CLL. DLTs were not observed, establishing VEN 400 mg as the recommended phase 2 dose in combination with G and IBR. Adverse events were manageable and largely consistent with those reported in the single agent phase 2 studies. Objective responses, including MRD-negative responses, have been observed among all R/R patients from the first dose cohorts. Accrual continues to parallel phase 2 cohorts of R/R (n=25) and TN (n=25) patients. Updated phase 1b toxicity and response data will be presented. Table. Table. Disclosures Jones: Abbvie: Membership on an entity's Board of Directors or advisory committees, Research Funding; Genentech: Membership on an entity's Board of Directors or advisory committees, Research Funding; Janssen: Membership on an entity's Board of Directors or advisory committees, Research Funding; Pharmacyclics: Membership on an entity's Board of Directors or advisory committees, Research Funding. Awan:Pharmacyclics: Consultancy; Novartis Oncology: Consultancy; Innate Pharma: Research Funding.

Oxidative DNA base modifications in peripheral blood mononuclear cells of patients treated with high-dose infusional doxorubicin

Blood ◽  
2001 ◽  
Vol 97 (9) ◽  
pp. 2839-2845 ◽  
Author(s):  
James H. Doroshow ◽  
Timothy W. Synold ◽  
George Somlo ◽  
Steven A. Akman ◽  
Ewa Gajewski
Keyword(s):  
Peripheral Blood Mononuclear Cell ◽  
Mononuclear Cell ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Single Agent ◽  
Gas Chromatography Mass Spectrometry ◽  
High Dose ◽  
Selected Ion Monitoring ◽  
Peripheral Blood Mononuclear ◽  
Dna Base

Abstract In prior studies, it was demonstrated that the redox metabolism of doxorubicin leads to the formation of promutagenic oxidized DNA bases in human chromatin, suggesting a potential mechanism for doxorubicin-related second malignancies. To determine whether a similar type of DNA damage is produced in the clinic, peripheral blood mononuclear cell DNA from 15 women treated with infusional doxorubicin (165 mg/m2) as a single agent was examined for 14 modified bases by gas chromatography/mass spectrometry with selected ion monitoring. Prior to the 96-hour doxorubicin infusion, 13 different oxidized bases were present in all DNA samples examined. Chemotherapy, producing a steady-state level of 0.1 μM doxorubicin, increased DNA base oxidation up to 4-fold compared to baseline values for 9 of the 13 bases studied. Maximal base oxidation was observed 72 to 96 hours after doxorubicin treatment was begun; the greatest significant increases were found for Thy Gly (4.2-fold), 5-OH-Hyd (2.5-fold), FapyAde (2.4-fold), and 5-OH-MeUra (2.4-fold). The level of the promutagenic base FapyGua increased 1.6-fold (P < .02), whereas no change in 8-OH-Gua levels was observed in peripheral blood mononuclear cell DNA during the doxorubicin infusion. These results suggest that DNA base damage similar to that produced by ionizing radiation occurs under clinical conditions in hematopoietic cells after doxorubicin exposure. If doxorubicin-induced DNA base oxidation occurs in primitive hematopoietic precursors, these lesions could contribute to the mutagenic or toxic effects of the anthracyclines on the bone marrow.

Cytotoxic T-Cell Response to the Cancer Testis Antigen PASD1 In Multiple Myeloma: PASD1 Peptides for a Generic Vaccine to Treat PASD1-Positive Haematological Malignancies

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 4294-4294
Author(s):  
Andrew J Campbell ◽  
Kamel Ait-Tahar ◽  
Suketu D. Patel ◽  
Martin Barnardo ◽  
Amanda P Liggins ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Normal Tissue ◽  
Hematological Malignancies ◽  
Mononuclear Cells ◽  
T Helper ◽  
Peripheral Blood Mononuclear ◽  
Blood Mononuclear Cells ◽  
Cancer Testis

Abstract Abstract 4294 Multiple myeloma (MM) is a bone marrow localized plasma cell tumor comprising 1% of all cancers and 10–15% of hematological malignancies. Despite significant advances in treatment, such as bortezomib, patients currently only have a 5-year survival rate of approximately 35%. The identification of improved therapeutic options therefore remains a priority. There is increasing evidence for a role of the immune system in tumor progression. Examples include the remission of some leukemias and lymphomas in immunocompetent patients while allogeneic stem cell transplantation also has a graft-versus-tumor effect in MM. The immunotherapeutic targeting of tumor-associated antigens (TAAs) on MM cells therefore represents an important approach for improved treatment of this disease. MM cells express a number of TAAs, of which cancer testis antigens (CTAs) are of particular interest. Their restricted normal tissue distribution combined with widespread expression in tumors makes them attractive immunotherapeutic targets whilst minimizing potential problems with autoimmunity. Reports of cytotoxic T cells (CTLs, the major effector cells in tumor immunity) and CD4-positive T-helper cells recognizing the NY-ESO-1 and MAGE CTAs in patients with MM suggests the presence of a spontaneous immune response to these molecules, which can be boosted through vaccination with CTAs such as NY-ESO-1. We previously identified PAS (Per ARNT Sim) domain containing 1 (PASD1) protein as a novel diffuse large B-cell lymphoma (DLBCL)-associated CTA. Importantly, PASD1 has a restricted normal tissue distribution but is present in a range of hematological malignancies, including MM. Subsequent in vitro studies have identified immunogenic PASD1 peptides that elicit PASD1-driven CTL or CD4-positive T-helper responses in peripheral blood mononuclear cells from DLBCL patients. Studies using a pre-clinical in vivo murine model have confirmed the immunogenicity of the PASD1 CTL peptides. These critical steps support the use of PASD1 as a potential immunotherapeutic target in DLBCL. The current study was performed to ascertain whether the PASD1 CTL peptides were immunogenic in MM patients and thus have utility for immunotherapy in this disease. Blood samples were obtained from 9 post-treatment myeloma patients attending the John Radcliffe Hospital following informed consent. Peripheral blood mononuclear cells were incubated with the PASD1 CTL peptides PASD1(1)38-47 (QLLDGFMITL) and PASD1(2)167-175 (YLVGNVCIL). A gamma-interferon ELISPOT release assay was performed after 8–10 days. The results are summarized in Table 1.Table 1:Gamma-IFN response to PASD1 in patients with MM.PatientsMHC Class I*Gamma-IFN response to peptides/50,000 cellsPASD1(1)PASD1(2)HIV-1PHADSA*0201+2+/−112+/−41+/−1100+/−14MWA*0201+52+/−244+/−220+/−266+/−8DMA*0201− A*2601+28+/−246+/−68+/−298+/−10JBA*0201+0+/−00+/−02+/−088+/−12JYA*0201+–––72+/−10DAA*0201−2+/−20+/−00+/−082+/−10GGA*0201−58+/−268+/−244+/−288+/−10MDA*0201−52+/−228+/−242+/−292+/−12RSA*0201––––*Results were considered positive if the number of spots in the test wells were at least twice that found in the irrelevant HIV-1 cultures. A significant gamma-interferon response was detected to one or both of the PASD1 peptides in 2/4 A*0201-positive evaluable patients. Analysis of the SYPETHI web-based algorithm predicted the PASD1 peptides used here to be immunogenic in the context of A*2601 and this was confirmed in the one A*2601+ patient studied here. No significant response was detected in the 3 A*0201 and A*2601-negative patients. Double immunolabeling studies using antibodies to PASD1 and CD138 showed PASD1 to be present in a subset of tumor cells in all 7 patients with evaluable ELISPOT data. Our findings demonstrate the immunogenicity of both the PASD1(1) and PASD1(2) peptides in patients with MM. These ‘generic’ peptides therefore represent vaccine candidates for inclusion in a vaccine targeting multiple PASD1-positive hematological malignancies. Disclosures: Banham: University of Oxford: Patents & Royalties. Pulford:Leukaemia and Lymphoma Research: Patents & Royalties.

Production of Immunoglobulin Isotypes by Peripheral Blood Mononuclear Cells in Multiple Myeloma

1994 ◽  
Vol 92 (2) ◽  
pp. 71-78 ◽  
Author(s):  
Marjaana Säily ◽  
Pirjo Koistinen ◽  
Seppo Laine ◽  
Esa Soppi ◽  
Eeva-Riitta Savolainen
Keyword(s):  
Multiple Myeloma ◽  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Peripheral Blood Mononuclear ◽  
Immunoglobulin Isotypes ◽  
Blood Mononuclear Cells

scholarly journals Venetoclax in Combination with FLAG-IDA Chemotherapy (FLAG-V-I) for Fit, Relapsed/Refractory AML Patients: Interim Results of a Phase 1b/2 Dose Escalation and Expansion Study

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 4048-4048 ◽  
Author(s):  
Courtney D. DiNardo ◽  
Maher Albitar ◽  
Tapan M. Kadia ◽  
Kiran Naqvi ◽  
Kenneth Vaughan ◽  
...  
Keyword(s):  
Adverse Events ◽  
Research Funding ◽  
Single Agent ◽  
Response Assessment ◽  
Early Mortality ◽  
Genetics Research ◽  
Best Response ◽  
Significant Difference ◽  
Phase 1B ◽  
Refractory Aml

Abstract Background: Venetoclax (VEN) is a potent and selective small molecule BCL2 inhibitor, with activity both as a single agent in relapsed/refractory AML, and in frontline combinations with hypomethylating agents and low-dose cytarabine. The ability of VEN to reduce the apoptotic threshold indicates it may be effective in combination with genotoxic agents which induce apoptosis, such as the FLAG-IDA regimen. Objectives: A Phase 1b/2 clinical trial was designed to assess the safety and efficacy of VEN in combination with FLAG-IDA induction/consolidation. The primary safety endpoint was the overall incidence and severity of adverse events by CTCAE criteria. The primary efficacy endpoint was ORR by modified IWG AML criteria, and defined as CR, CRi, and PR. Secondary analyses include duration of response (DOR) and overall survival (OS), and exploratory analyses include gene expression signatures by RNA sequencing. Methods: Eligibility for the Phase 1b portion includes medically fit, relapsed/refractory (R/R) AML patients of any age with adequate organ function and ECOG PS ≤ 2. Patients receive FLAG-IDA induction/consolidation, in combination with VEN orally daily. FLAG-IDA induction for R/R AML consists of fludarabine 30 mg/m2 IV days 2-6, cytarabine 2 g/m2 IV days 2-6, idarubicin 6 mg/m2 IV days 4-6, and filgrastim 5 mcg/kg daily days 1-7 (or peg-filgrastim 6 mg after day 5 to replace remaining injections). The first cohort (dose -1) received FLAG-IDA with VEN 200 mg on days 1-21 of induction, incorporating a 2-day VEN dose ramp up. After the observation of gram-negative bacteremia and/or sepsis in 5 of the first 6 patients during cycle 1 nadir, an amended dose level -1 induction was designed with VEN 200 mg on days 1-14 and cytarabine 1.5 g/m². After completion of induction/consolidation, single-agent VEN at 400 mg orally continuously is provided as maintenance for patients not proceeding to SCT. The data cutoff for this analysis was 7.26.2018. Results: Twelve patients with a median age of 49 years (range 32 - 72) have been enrolled. All patients had relapsed/refractory AML with a median of 2 (range 1 - 4) prior treatments, and four (33%) patients had received ≥1 prior allogeneic SCT. Six patients (50%) had complex cytogenetics, 3 (25%) were intermediate risk, and 3 (25%) were favorable risk. Additional demographics including molecular annotation at study enrollment are provided in Table 1. The median number of FLAG-IDA + VEN cycles received is 2 (0.5 - 3). Severe adverse events regardless of causality were neutropenic fever/bacteremia (n=5), pneumonia/lung infection (n=4), sepsis (n=4), typhlitis (n=1), and hypotension (n=2). All cases of sepsis occurred in the original dose -1 cohort. No early mortality was observed on study (30-d and 60-d mortality 0%). Of 12 patients, one remains too early for response assessment. Of 11 patients, 8 patients (73%) achieved a best response of CR/CRi (7 CR, 1 CRi). Seven patients attained a best response within the first induction cycle, and one attained blast reduction after cycle 1 followed by CR after re-induction. Median time to ANC recovery > 500/ul in responding patients was 28 days (range 23 to 33 days). Of the 8 responding patients, three patients proceeded to allogeneic SCT, 2 remain on study, 2 patients relapsed, and 1 patient died in CR. Figure 1 depicts OS and DOR. With a median follow-up time of 4 months to date, median DOR has not been reached and the 6-month OS is 67%. NGS evaluation of RNA at pre-treatment and end of cycle 1 (EOC1) timepoints demonstrated no significant difference in BCL2 expression, either before/after therapy per patient, or based on clinical response. In patients who failed to achieve CR/CRi, significantly lower EOC1 expression (p=0.05) of BAX, BCLXL, BCL10, BCL2A1, BCL3, BCL9, TRS1, and TP53 was identified. Additionally, increased MCL1 expression at EOC1 was significantly (p=0.04) associated with relapse. Conclusion: FLAG-IDA chemotherapy with venetoclax demonstrates notable activity in a heavily pre-treated and R/R yet medically fit patient population. Neither prolonged cytopenias nor early mortality was observed. The ongoing Phase 1b portion aims to establish the best VEN dose in combination with intensive chemotherapy, to be followed with a Phase 2 portion with treatment arms for both newly diagnosed and R/R AML patients. Disclosures DiNardo: Medimmune: Honoraria; Bayer: Honoraria; Karyopharm: Honoraria; Abbvie: Honoraria; Celgene: Honoraria; Agios: Consultancy. Albitar:Neogenomics Laboratories: Employment. Kadia:Abbvie: Consultancy; Jazz: Consultancy, Research Funding; BMS: Research Funding; BMS: Research Funding; Celgene: Research Funding; Abbvie: Consultancy; Takeda: Consultancy; Novartis: Consultancy; Pfizer: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Novartis: Consultancy; Amgen: Consultancy, Research Funding; Jazz: Consultancy, Research Funding; Amgen: Consultancy, Research Funding; Takeda: Consultancy; Celgene: Research Funding. Ravandi:Bristol-Myers Squibb: Research Funding; Xencor: Research Funding; Sunesis: Honoraria; Macrogenix: Honoraria, Research Funding; Abbvie: Research Funding; Amgen: Honoraria, Research Funding, Speakers Bureau; Jazz: Honoraria; Jazz: Honoraria; Amgen: Honoraria, Research Funding, Speakers Bureau; Orsenix: Honoraria; Macrogenix: Honoraria, Research Funding; Orsenix: Honoraria; Astellas Pharmaceuticals: Consultancy, Honoraria; Xencor: Research Funding; Sunesis: Honoraria; Seattle Genetics: Research Funding; Abbvie: Research Funding; Astellas Pharmaceuticals: Consultancy, Honoraria; Bristol-Myers Squibb: Research Funding; Seattle Genetics: Research Funding. Cortes:Novartis: Consultancy, Research Funding; Daiichi Sankyo: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Astellas Pharma: Consultancy, Research Funding; Arog: Research Funding. Konopleva:Stemline Therapeutics: Research Funding.

Results from Phase 1/2 Trial of Tagraxofusp in Combination with Pomalidomide and Dexamethasone in Relapsed or Refractory Multiple Myeloma

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3145-3145 ◽  
Author(s):  
Paul G. Richardson ◽  
Myo Htut ◽  
Cristina Gasparetto ◽  
Jeffrey A. Zonder ◽  
Thomas G. Martin ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Board Of Directors ◽  
Peripheral Blood ◽  
Research Funding ◽  
Phase 1 ◽  
Single Agent ◽  
Advisory Board ◽  
Employment Equity ◽  
Advisory Committees ◽  
Equity Ownership

Background: The bone marrow microenvironment of many multiple myeloma (MM) patients contains high levels of CD123-expressing plasmacytoid dendritic cells (pDCs). These pDCs have been shown to augment MM growth and contribute to drug resistance (Chauhan, et al., Cancer Cell, 2009). Tagraxofusp, a novel CD123 targeted therapy, has demonstrated high levels of anti-tumor activity in patients with blastic plasmacytoid dendritic cell neoplasm (BPDCN), an aggressive CD123+ malignancy of pDC origin. Tagraxofusp demonstrated potent in vitro and in vivo activity against MM cell lines and primary tumor samples via both a direct anti-MM effect and indirect pDC-targeting effect (Ray, et al., Leukemia, 2017), as well as demonstrating synergy in these systems when used in combination with traditional MM therapies including pomalidomide (POM). As such, targeting pDCs with tagraxofusp may offer a novel therapeutic approach in MM. Methods: This multicenter, single arm Phase 1/2 trial enrolled patients with relapsed or refractory (r/r) MM and tested two different doses of tagraxofusp (7 or 9 mcg/kg). Patients received tagraxofusp as a daily IV infusion for days 1-5 of a 28-day cycle as a single agent for the initial run-in cycle (cycle 0) and in combination with standard doses/administration of POM and dexamethasone (DEX) in cycles 1 and beyond. Objectives included evaluation of safety and tolerability, identification of the maximum tolerated or tested dose, and efficacy. Results: 9 patients with r/r MM received tagraxofusp (7 mcg/kg, n=7; 9 mcg/kg, n=2). 5 males, median age 65 years (range: 57-70), median 3 prior therapies (range 2-6). Median follow-up was 12 months (range: 7 - 19). The most common treatment-emergent AEs (TEAEs) were hypoalbuminemia 67% (6/9); chills, fatigue, insomnia, nausea and pyrexia each 56% (5/9); and dizziness, headache, hypophosphatemia, and thrombocytopenia each 44% (4/9). The most common grade 3 and 4 TEAEs were thrombocytopenia 44% (4/9) and neutropenia 33% (3/9). No grade 5 events reported. 5 patients treated with tagraxofusp and POM+DEX had a partial response (PR) after tumor evaluation. These patients demonstrated a rapid decrease in a set of myeloma-related laboratory values from pre-tagraxofusp treatment levels after the first combination cycle of tagraxofusp and POM+DEX. Additionally, these 5 patients demonstrated >50% decreases in peripheral blood pDC levels after both tagraxofusp monotherapy and combination therapy. Conclusions: Tagraxofusp was well-tolerated, with a predictable and manageable safety profile, when dosed in combination with POM+DEX in patients with r/r MM. Evidence of pDC suppression in peripheral blood and BM was observed in this patient population. 5 patients that received tagraxofusp and POM+DEX combination had PRs and decreases in pDC levels while on treatment with tagraxofusp. Given CD123 expression on pDCs in the tumor microenvironment and the potential synergy of tagraxofusp with certain MM agents including POM, tagraxofusp may offer a novel mechanism of action in MM. NCT02661022. Disclosures Richardson: Oncopeptides: Membership on an entity's Board of Directors or advisory committees, Research Funding; Amgen: Membership on an entity's Board of Directors or advisory committees; Janssen: Membership on an entity's Board of Directors or advisory committees; Sanofi: Membership on an entity's Board of Directors or advisory committees; Karyopharm: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees, Research Funding; Takeda: Membership on an entity's Board of Directors or advisory committees, Research Funding; Bristol-Myers Squibb: Research Funding. Gasparetto:Celgene: Consultancy, Honoraria, Other: Travel, accommodations, or other expenses paid or reimbursed ; Janssen: Consultancy, Honoraria, Other: Travel, accommodations, or other expenses paid or reimbursed ; BMS: Consultancy, Honoraria, Other: Travel, accommodations, or other expenses paid or reimbursed . Zonder:Janssen: Consultancy, Membership on an entity's Board of Directors or advisory committees; Oncopeptides: Consultancy, Membership on an entity's Board of Directors or advisory committees. Martin:Roche and Juno: Consultancy; Amgen, Sanofi, Seattle Genetics: Research Funding. Chen:Stemline Therapeutics: Employment, Equity Ownership. Brooks:Stemline Therapeutics: Employment, Equity Ownership, Patents & Royalties. McDonald:Stemline Therapeutics: Employment, Equity Ownership. Rupprecht:Stemline Therapeutics: Employment, Equity Ownership. Wysowskyj:Stemline Therapeutics: Employment, Equity Ownership. Chauhan:C4 Therapeutics.: Equity Ownership; Stemline Therapeutics: Consultancy. Anderson:Gilead Sciences: Other: Advisory Board; Janssen: Other: Advisory Board; Sanofi-Aventis: Other: Advisory Board; OncoPep: Other: Scientific founder ; C4 Therapeutics: Other: Scientific founder .

scholarly journals Anti-tumor Activity and Epigenetic Impact of the Polyphenol Oleacein in Multiple Myeloma

Cancers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 990 ◽  
Author(s):  
Giada Juli ◽  
Manuela Oliverio ◽  
Dina Bellizzi ◽  
Maria Eugenia Gallo Cantafio ◽  
Katia Grillone ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Histone Deacetylases ◽  
Mononuclear Cells ◽  
Single Agent ◽  
In Vitro Models ◽  
Biologically Active ◽  
Down Regulation ◽  
Peripheral Blood Mononuclear ◽  
Natural Agents

Olive oil contains different biologically active polyphenols, among which oleacein, the most abundant secoiridoid, has recently emerged for its beneficial properties in various disease contexts. By using in vitro models of human multiple myeloma (MM), we here investigated the anti-tumor potential of oleacein and the underlying bio-molecular sequelae. Within a low micromolar range, oleacein reduced the viability of MM primary samples and cell lines even in the presence of bone marrow stromal cells (BMSCs), while sparing healthy peripheral blood mononuclear cells. We also demonstrated that oleacein inhibited MM cell clonogenicity, prompted cell cycle blockade and triggered apoptosis. We evaluated the epigenetic impact of oleacein on MM cells, and observed dose-dependent accumulation of both acetylated histones and α-tubulin, along with down-regulation of several class I/II histone deacetylases (HDACs) both at the mRNA and protein level, providing evidence of the HDAC inhibitory activity of this compound; conversely, no effect on global DNA methylation was found. Mechanistically, HDACs inhibition by oleacein was associated with down-regulation of Sp1, the major transactivator of HDACs promoter, via Caspase 8 activation. Of potential translational significance, oleacein synergistically enhanced the in vitro anti-MM activity of the proteasome inhibitor carfilzomib. Altogether, these results indicate that oleacein is endowed with HDAC inhibitory properties, which associate with significant anti-MM activity both as single agent or in combination with carfilzomib. These findings may pave the way to novel potential anti-MM epi-therapeutic approaches based on natural agents.

Anti-CXCL12/SDF-1 Spiegelmer® Nox-A12 Alone and In Combination With Bortezomib and Dexamethasone In Patients With Relapsed Multiple Myeloma: Results From A Phase IIa Study

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 1951-1951 ◽  
Author(s):  
Heinz Ludwig ◽  
Katja Weisel ◽  
Monika Engelhardt ◽  
Richard Greil ◽  
Anna Maria Cafro ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Peripheral Blood ◽  
Research Funding ◽  
Plasma Cells ◽  
Peak Plasma ◽  
Combined Treatment ◽  
Single Agent ◽  
Total Sample ◽  
Dose Titration ◽  
Design For All

Abstract Background NOX-A12 is a novel, potent, L-stereoisomer RNA aptamer (Spiegelmer®) that binds and neutralizes CXCL12/SDF-1, a chemokine which attracts and activates immune- and non-immune cells via interaction with its receptors, CXCR4 and CXCR7. CXCL12 plays an important role in homing and trafficking of multiple myeloma (MM) cells to the bone marrow (BM). Here, we evaluate the capacity of NOX-A12 to mobilize plasma cells into the circulation. Furthermore, we analyze a possible therapeutic impact of NOX-A12 which disrupts the interaction of MM cells with the BM stroma resulting in enhanced chemosensitivity to established therapies such as bortezomib and dexamethasone (VD). Methods To date, 21/28 planned patients have been enrolled into a multicenter Phase IIa study of NOX-A12 alone and in combination with VD in relapsed MM patients. Here we report interim data on PK, PD and preliminary efficacy of a pilot group consisting of 3 cohorts of 3 patients each. In the pilot phase, cohorts received single doses of 1, 2 or 4 mg/kg NOX-A12 alone, respectively, two weeks prior to 8 planned cycles of combined treatment with NOX-A12 and VD repeated every 21 days. During combination therapy, NOX-A12 was administered 1-2 hours prior to bortezomib following a dose titration design for all patients: NOX-A12 doses were increased from 1 mg/kg to 2 mg/kg and 4mg/kg at cycles 1, 2 and 3, respectively. During cycles 4-6, doses of NOX-A12 were kept at the highest individually titrated dose. Bortezomib (1.3 mg/m2) was given on days 1, 4, 8 and 11 as intravenous injection. Oral dexamethasone (20 mg) was added on the day of and the day after bortezomib administration. Response was evaluated by applying the uniform response criteria of the IMWG 2011. Results In total, 10 patients were enrolled into the pilot group (one patient was replaced after withdrawal of consent). The median age was 63 years (range 56-78) with 7 women and 3 men being included. Median prior therapies were 2 (range 1-5), with 9 patients having been pretreated with dexamethasone and 3 with bortezomib prior to enrollment. At screening 1, 7 and 2 patients presented with ISS stage I, II and III, respectively. IgG, IgA and LC M-components were present in 6, 3 and 1 patients, respectively. Six patients had cytogenetic aberrations, which were high risk (t(4;14) or del17p) in 2 patients. Plasma profiles of NOX-A12 in the patient population of the pilot group (Figure 1) were similar to healthy volunteers in which a plasma half-life of approximately 38 hours was observed. After single doses of NOX-A12, a dose-linear exposure with peak plasma levels of 2.1, 3.9, and 6.7 µM was found in the corresponding cohorts. Furthermore, an increase of plasma cells in peripheral blood by approximately 200% was detected which lasted throughout the observation period of 3 days (Figure 2). NOX-A12 as single agent was safe and very well tolerated. Of nine evaluable patients who received the combination treatment of NOX-A12 and VD, 2 (22%) achieved a VGPR and 4 (44%) PR, resulting in an ORR (≥ PR) of 67%. In combination with VD, NOX-A12 was equally safe and well tolerated. Conclusion Proof of principle was achieved as single doses of NOX-A12 reached the expected plasma exposure and translated into an effective and prolonged mobilization of plasma cells into the peripheral blood. In addition, responses (PR or better) were noted in 6/9 (67%) patients of this pilot group. Single agent NOX-A12 was not associated with any relevant toxicity and the combination of VD with NOX-A12 was well tolerated and not associated with additional toxicity on top of VD. Provided that these promising findings will be confirmed in the total sample of 28 patients, further development of this novel anti-CXCL12/SDF-1 Spiegelmer® seems warranted. Disclosures: Ludwig: Celgene: Honoraria, Research Funding; Janssen: Honoraria, Research Funding; Munipharma: Honoraria, Research Funding. Weisel:Celgene: Consultancy, Honoraria, Research Funding; Janssen: Consultancy, Honoraria. Engelhardt:MSD, Janssen-Cilag: Research Funding. Greil:NOXXON Pharma AG: Research Funding. Dümmler:NOXXON Pharma AG: Employment. Zöllner:NOXXON Pharma AG: Employment. Zeitler:NOXXON Pharma AG: Employment. Riecke:NOXXON Pharma AG: Employment. Kruschinski:Noxxon: Employment.

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