Response Of Rare Variants Of Cutaneous T Cell Lymphoma (CTCL) To Treatment With Bexarotene. A Prospective German DeCOG Trial

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 4379-4379 ◽  
Author(s):  
Michael Weichenthal ◽  
Simone Goldinger ◽  
Ulrike Wehkamp ◽  
Marc Beyer ◽  
Annette Stein ◽  
...  

Abstract The Retinoid-X-Receptor specific retinoid bexarotene is approved for treatment of cutaneous T-cell lymphoma (CTCL) in the United States and Europe. CTCL is a heterogeneous group of peripheral non-Hodgkin lymphomas with different prognosis and different response to treatment and the current WHO classification contains nine different entities with Mycosis fungoides (MF) as the most common subtype. Since most data on efficacy and tolerability are available from studies with MF, this Dermatologic Cooperative Oncology Group (DeCOG) trial (ADO-CTCL-3) evaluates treatment response to bexarotene in patients with non-MF CTCL, encompassing CD30+ primary cutaneous ALCL and severe lymphomatoid papulosis (LyP), CD-30 negative pleomorphic TCL, Sezary's syndrome (SS), subcutaneous panniculitis-like TCL, and other defined variants. Additionally, patients with different rare variants of MF, including folliculotropic (fMF), granulomatous, erythrodermic, and CD30+ transformed MF were included. 200 patients with CTCL stage IB or higher and at least one prior treatment failure were registered in this trial with bexarotene at an initial daily dose of 150mg/m² orally und prophylactic fenofibrate medication. Bexatrotene was increased to a target dosage of 300 mg/m² in patients with tolarable serum lipids under these conditions. Patients were evaluated according to a standardized evaluation tool (tumor burden index; TBI) up to 24 weeks of of treatment or until progression occured. In responding patients, treatment could be continued until progression. After a central pathology board review process 2 patients needed to be excluded from evaluation because of misdiagnoses. Additional 11 patients could not be evaluated for response due to early withdrawal. Among the remaining patients there were 18 patients with SS, 8 cutaneous CD30+ ALCL, 10 Lyp, 9 other rare entities. In addition MF cases with folliculotropic subtype (18), CD30+ transformation (11), CD30- transformation (4), and a variety of other MF subtypes could be compared to the response in classical MF. Response to bexarotene could be confirmed in classical MF with an objective response (OR) rate of 37 percent (5% CR; 32% PR). Response rates for the other entities were as follows: CD30+ ALCL 50% OR, LyP 60% OR, SS 33% OR, other forms of CTCL together 33% OR. In MF with CD30+ transformation 46% responded, in contrast to only 11% of cases with folliculotropic MF. Tolerability was as expected with most grade III/IV toxicities limited to hyperlipidemia. Side effect management anf the incidence of serious adverse events could be substantially improved using standard algorithms for lipid control. In conclusion, this is one of the largest CTCL cohorts with exact pathological review worldwide evaluated for treatment response with bexarotene. Bexarotene appears to be a safe and effective treatment option also in non-classical MF and CTCL variants. Folliculotropic MF proved to be a difficult-to-treat entity and CD30 expression seems to be a favourable prognostic marker for treatment response. Disclosures: Weichenthal: Cephalon GmbH: Honoraria, Membership on an entity’s Board of Directors or advisory committees, Research Funding; TEVA GmbH: Honoraria, Membership on an entity’s Board of Directors or advisory committees, Research Funding. Goldinger:Cephalon: Travel costs Other; TEVA: Travel costs, Travel costs Other. Wehkamp:TEVA GmbH: Travel costs Other. Beyer:TEVA GmbH: Honoraria, Research Funding; Cephalon GmbH: Honoraria, Research Funding. Stein:Cephalon: Travel costs Other; TEVA: Travel costs, Travel costs Other. Tsianakas:Cephalon: Travel costs Other; TEVA: Travel costs, Travel costs Other. Koch:Cephalon: Travel costs Other. Yazdi:Cephalon: Travel costs Other; TEVA: Travel costs, Travel costs Other. Wobser:Cephalon: Travel costs Other; TEVA: Travel costs, Travel costs Other. Frambach:Cephalon: Travel costs Other; TEVA: Travel costs, Travel costs Other. Dippel:Cephalon GmbH: Honoraria, Travel costs Other; TEVA GmbH: Honoraria, Travel costs, Travel costs Other. Geißler:Cephalon GmbH: Travel costs Other; TEVA GmbH: Travel costs, Travel costs Other. Loquai:TEVA GmbH: Travel costs Other. Kurschat:Cephalon: Travel costs Other; TEVA GmbH: Honoraria, Travel costs, Travel costs Other. Pföhler:Cephalon: Travel costs Other. Hartmann:Cephalon GmbH: Travel costs Other; TEVA GmbH: Travel costs, Travel costs Other. Coors:Cephalon GmbH: Travel costs Other; TEVA GmbH: Honoraria, Travel costs, Travel costs Other. Hallermann:TEVA GmbH: Travel costs Other. Mohr:TEVA: Honoraria, Travel costs Other. Hillen:TEVA: Travel costs Other. Belloni:Cephalon GmbH: Travel costs Other. Mitteldorf:Cephalon: Travel costs Other. Assaf:TEVA: Honoraria, Research Funding, Travel costs Other. Klemke:TEVA GmbH: Consultancy, Honoraria; Cephalon GmbH: Honoraria. Becker:Cephalon GmbH: Honoraria, Research Funding; TEVA GmbH: Honoraria. Dummer:Cephalon GmbH: Honoraria, Research Funding; TEVA GmbH: Honoraria. Nicolay:TEVA: Travel costs Other.

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 3592-3592 ◽  
Author(s):  
Stacie Hudgens ◽  
Pierluigi Porcu ◽  
Pietro Quaglino ◽  
Auris Huen ◽  
Lysbeth Floden ◽  
...  

Abstract OBJECTIVES: To determine whether individual items on patient-reported outcome measures show significant differences over the course of treatment for patients with cutaneous T-cell lymphoma (CTCL). METHODS: A large, open-label, multi-center, randomized, Phase 3 study compared mogamulizumab, an anti-C-C chemokine receptor type 4 (CCR4)-targeted antibody, versus vorinostat in 372 CTCL patients who had failed ≥ 1 prior systemic therapy. Clinical quality of life (QoL) measurements included Skindex-29, Functional Assessment of Cancer Therapy-General (FACT-G), and two measures of pruritus (a Likert Scale and ItchyQoL). Analyses on identified individual symptom items of Skindex-29 and toxicity items of FACT-G were conducted using longitudinal generalized estimation equations (GEE) of the post-baseline, treated period assessments (through Cycles 5 or 6, depending on collection schedule) for these items. The proportion of patients experiencing a 1-grade improvement is presented in terms of frequency and percentage by treatment arm. Forest plots of odds ratios (OR) and associated confidence intervals (CI) from the GEE analyses were generated to characterize the likelihood of a 1-grade categorical improvement (eg, improvement by 1 category on the verbal response scale) on individual items for patients treated with mogamulizumab compared to vorinostat during the first 6 cycles of therapy. RESULTS: The likelihood of patients experiencing a 1-grade improvement in skin symptoms, side effect bother, and lack of energy was higher for patients treated with mogamulizumab compared to vorinostat (OR > 1.0). Patients treated with mogamulizumab were more likely to observe a 1-grade improvement in painful skin (OR=1.74, CI=1.180-2.572), irritated skin (OR=1.34, CI=0.909-1.978), lack of energy (OR=2.20, CI=1.461-3.309), side effect bother (OR=1.28, CI=0.810-2.020), and general cancer pain (OR=1.38, CI=0.922-2.063) within 6 cycles of therapy (Figure). The single item descriptive and proportion analysis of 1+ grade improvement at cycle 5 from baseline is presented (Table). CONCLUSIONS: These data provide detailed information on the cumulative probability of categorical improvement of individual items on the skin symptoms of Skindex-29 and the toxicity bother, energy, and pain items of FACT-G. These results support symptom benefit of mogamulizumab over the course of treatment compared to vorinostat. Disclosures Porcu: Innate Pharma: Consultancy. Leoni:Kyowa Kirin: Employment. Duvic:Oncoceuticals: Research Funding; Precision Oncology, LLC: Membership on an entity's Board of Directors or advisory committees; MiRagen Therapeutics: Consultancy; UT MD Anderson Cancer Center: Employment; Aclaris Therapeutics Int'l Ltd.: Honoraria, Membership on an entity's Board of Directors or advisory committees; Defined Health: Consultancy; Jonathan Wood & Associates: Other: Speaker; Allos: Research Funding; Array Biopharma: Consultancy, Honoraria; Cell Medica Inc.: Consultancy, Honoraria; Concert Pharmaceuticals, Inc.: Consultancy; Guidepoint Global: Consultancy; American Council on Extracorporeal Photopheresis (ACE): Membership on an entity's Board of Directors or advisory committees; Shape: Research Funding; Medscape: Other: Speaker/Preceptor; Huya Bioscience Int'l: Consultancy; Eisai: Research Funding; Dr. Reddy's Laboratories (A.K.A. Promius Pharma): Consultancy; Forty Seven, Inc.: Membership on an entity's Board of Directors or advisory committees; Clinical Care Options: Consultancy; Huron Consulting Group: Consultancy; Millennium Pharmaceuticals, Inc.: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Soligenix, Inc.: Membership on an entity's Board of Directors or advisory committees, Research Funding; Kiniksa Pharmaceuticals: Consultancy; The Lynx Group: Consultancy; Celgene Corp: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Mallinckrddt Pharmaceuticals (formerly Therakos): Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Kyowa Hakko Kirin, Co: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; MEDACorp: Consultancy; Medivir AB: Membership on an entity's Board of Directors or advisory committees; Taiwan Liposome Company LTD: Consultancy; Evidera, Inc.: Consultancy; Rhizen Pharma: Research Funding; Spatz Foundation: Research Funding; Tetralogics: Research Funding; Seattle Genetics: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding.


Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 1325-1325
Author(s):  
Sara Beygi ◽  
Sebastian Fernandez-Pol ◽  
George Duran ◽  
Youn H. Kim ◽  
Michael S. Khodadoust

Abstract Background: Mogamulizumab is a humanized anti-CCR4 antibody approved for the treatment of mycosis fungoides and Sézary Syndrome. Despite almost universal expression of CCR4 in these diseases, many patients eventually develop resistance to mogamulizumab (moga). The mechanisms of resistance to moga have not been characterized. An understanding of the resistance mechanisms will shed light on the disease biology and inform selection of next line therapies and the development of future CCR4-directed treatments for patients with cutaneous T cell lymphoma (CTCL). Methods: We identified 19 patients with mycosis fungoides or Sezary syndrome in whom moga had been discontinued due to lack or loss of response to therapy. Archival blood and skin and/or lymph node biopsies after discontinuation of treatment were studied. Specimens collected prior to initiation of moga were also procured whenever available. CCR4 protein expression was determined by immunohistochemistry (IHC; clone L291H4; Biolegend). Targeted sequencing was performed using the Agilent XTHS2 platform (Agilent) with a custom Agilent SureSelect panel that included full coverage of the exonic regions of CCR4. Results: Fourteen patients had Sézary syndrome and five had mycosis fungoides. Twelve patients were classified as primary refractory to treatment and the remaining seven patients had secondary resistance. Median duration of treatment with moga was 3.5 months (range: 2-41). CCR4 expression was non-detectable in post-treatment specimens of 8 of 14 (57%) patients with evaluable specimens. Targeted DNA sequencing of post-treatment samples revealed novel coding mutations of CCR4 in three patients. Only one of the 3 mutations (L21V) overlapped with the known N-terminal mogamulizumab binding epitope. The other two mutations occurred in transmembrane domains (M116R, T161-W162 delinsSR). Two patients with mutations in CCR4 also had unequivocal copy number loss involving the CCR4 locus. Acquisition of CCR4 genomic alterations corresponded with lack of CCR4 expression by immunohistochemistry. In-vitro validation of the novel CCR4 mutations is ongoing and results from these experiments will be included in the final presentation. Conclusion: Overall our study indicates that potential loss of CCR4 expression, with or without underlying genomic aberrations, represents a major hurdle in the development of future CCR4 targeting strategies in CTCL. This finding has important implications for management and monitoring of cutaneous T cell lymphoma patients receiving CCR4 directed therapies. Disclosures Beygi: Kite/Gilead: Current Employment. Kim: Mundipharma: Honoraria, Membership on an entity's Board of Directors or advisory committees; Sanofi: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Regeneron: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; CRISPR: Research Funding; Eisai: Research Funding; Soligenix: Research Funding; Portola: Membership on an entity's Board of Directors or advisory committees, Research Funding; Elorac: Research Funding; Galderma: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Trillium: Research Funding; Corvus: Membership on an entity's Board of Directors or advisory committees, Research Funding; Innate: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Kyowa Kirin: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Secura Bio: Honoraria, Membership on an entity's Board of Directors or advisory committees; Alexion, AstraZeneca Rare Disease: Other: Study investigator; Merck: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees; Seattle Genetics: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; Horizon: Research Funding. Khodadoust: Alexion, AstraZeneca Rare Disease: Other: Study investigator; Myeloid Therapeutics: Membership on an entity's Board of Directors or advisory committees; CRISPR Therapeutics, Nutcracker Therapeutics: Research Funding.


Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 114-114 ◽  
Author(s):  
Bertrand Coiffier ◽  
Barbara Pro ◽  
H. Miles Prince ◽  
Francine M Foss ◽  
Lubomir Sokol ◽  
...  

Abstract Abstract 114 Background: Romidepsin is a potent HDAC inhibitor approved by the FDA for patients (pts) with cutaneous T-cell lymphoma who have received at least 1 prior systemic therapy. Durable clinical benefit and tolerability of romidepsin in pts with recurrent or refractory PTCL have been previously observed in a phase 2 trial conducted by the National Cancer Institute. The aim of this phase 2, single-arm, open-label registration study was to evaluate the activity of romidepsin in a larger number of pts with progressive or relapsed PTCL. Methods: Pts with histologically confirmed PTCL (PTCL NOS, angioimmunoblastic T-cell lymphoma, ALCL [ALK-1 negative], other subtypes) who failed or were refractory to ≥ 1 prior systemic therapy, and had measurable disease and ECOG performance status 0–2 were eligible. Exclusions included inadequate bone marrow or other organ function and significant cardiovascular abnormalities. Pts received romidepsin 14 mg/m2 as a 4-h IV infusion on days 1, 8, and 15 every 28 days for up to 6 cycles; treatment could be extended for stable disease (SD) or response. The primary endpoint was rate of complete response (CR + CRu) as evaluated by a central Independent Review Committee (IRC) using International Working Criteria for non-Hodgkin's lymphoma. IRC assessment consisted of a 2-step process, with initial radiographic review of images (CT, MRI) followed by an overall clinical assessment based on the radiology evaluations, photographs, and relevant clinical parameters. Secondary endpoints included objective response rate (ORR): CR + CRu + partial response (PR), investigator-assessed responses, duration of response, time to response, and safety. Results: 131 pts from 48 US, European, and Australian sites were enrolled and received at least 1 dose of romidepsin (as-treated population); 130 patients had histologically confirmed PTCL by central review. Mean age of all pts was 59.4 y (range, 20–83) and median time since diagnosis was 1.25 y (range, 0–17). Median number of prior systemic therapies was 2 (range, 1–8). 21 pts (16%) had failed a prior stem cell transplant. Responses assessed by the IRC are noted in the table below. Longest duration of response is 26+ mo and 16 (94%) of the 17 pts with a CR had not progressed as of the data cutoff (March 31, 2010). Investigator-assessed responses included 21 pts (16%) with CR + CRu, 18 pts (14%) with PR for an ORR of 30%. Currently, 13 pts continue to receive treatment (range, 10–36 cycles). Adverse events (AEs) were reported in 126 of 131 pts (96%). AEs reported in ≥ 20% of pts were nausea (59%), fatigue (41%), vomiting (38%), thrombocytopenia (38%), diarrhea (35%), pyrexia (34%), neutropenia (30%), anorexia (28%), constipation (28%), anemia (23%), and dysgeusia (21%). AEs ≥ grade 3 were reported for 86 pts (66%), with the most common (≥ 5%) being pneumonia (5%), pyrexia (5%), sepsis (5%), and vomiting (5%). 60 pts (46%) had at least 1 serious AE: the most frequently reported (≥ 5%) were pyrexia (7%), pneumonia (5%), vomiting (5%), and sepsis (5%). 22 pts (17%) withdrew due to AEs. 8 pts (6%) died within 30 days of the last dose of romidepsin; 1 death, due to sepsis, was assessed as possibly related to treatment. Conclusions: Complete and durable responses were observed with single agent romidepsin in pts with relapsed PTCL. These data support the therapeutic potential for romidepsin in relapsed PTCL and suggest that romidepsin is a strong candidate for inclusion in future novel regimens for these diseases. As of the data cutoff (March 31, 2010), the median duration of follow-up for CR is 8.2 mo. Disclosures: Coiffier: Gloucester: Consultancy, Honoraria; Celgene: Consultancy, Honoraria, Research Funding, Speakers Bureau. Off Label Use: Romidepsin is indicated for the treatment of cutaneous T-cell lymphoma (CTCL) in patients who have received at least one prior systemic therapy. Romidepsin is not currently approved for the treatment of peripheral T-cell lymphoma (PTCL). Pro:Celgene: Research Funding. Prince:Celgene: Consultancy, Honoraria, Research Funding. Foss:Celgene: Consultancy; Eisai: Consultancy, Speakers Bureau; Merck: Speakers Bureau; Allos: Consultancy, Speakers Bureau; Cephalon: Speakers Bureau. Sokol:Celgene: Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Caballero:Celgene: Membership on an entity's Board of Directors or advisory committees. Morschhauser:Roche: Consultancy, Honoraria; Bayer: Honoraria. Padmanabhan:Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau. Shustov:Celgene: Research Funding. Nichols:Celgene: Employment. Carroll:Celgene: Employment. Balser:Gloucester Pharmaceutical: Consultancy. Horwitz:Celgene: Consultancy, Honoraria.


Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 1614-1614 ◽  
Author(s):  
Francine M. Foss ◽  
Kenneth R. Carson ◽  
Lauren Pinter-Brown ◽  
Steven M. Horwitz ◽  
Steven T. Rosen ◽  
...  

Abstract 1614 Background: Registries can be invaluable for describing patterns of care for a population of patients. COMPLETE is a registry of peripheral T-cell lymphoma (PTCL) patients designed to identify the lymphoma-directed treatments and supportive care measures that PTCL patients receive. We report here the first detailed findings of initial therapy. Methods: This is a prospective, longitudinal, observational registry that is led by a global steering committee. Patients with newly diagnosed PTCL and providing written informed consent are eligible. Patients are entered into the registry from time of initial diagnosis and followed for up to 5 years. Only locked records are reported. Results: As of July 2012, 330 patients have been enrolled from the United States. The first patient was enrolled in February 2010. Locked baseline and treatment records are available for 124 and 81 patients, respectively. Of the 124 patients with locked baseline records, 67 patients (54%) were male, the mean age was 59 (range: 19–89), and race/ethnicity was recorded as: White (87 patients; 70%), Black (19; 15%), Asian (5; 4%) and other/unknown (13; 11%). Histology was reported as follows: PTCL-not otherwise specified (27%), anaplastic large cell lymphoma-primary systemic type (18%), angioimmunoblastic T-cell lymphoma (17%), transformed mycosis fungoides (7%), T/NK-cell lymphoma-nasal and nasal type (6%), adult T-cell leukemia/lymphoma, HTLV 1+ (6%) and other (19%). 25 patients (20%) had received another diagnosis, including B-cell lymphoma, Hodgkin's disease and other T-cell lymphomas, prior to their current diagnosis of PTCL. 49 patients (40%) had B symptoms, 102 patients (82%) had an Ann Arbor stage of III/IV, 116 patients (94%) had ECOG performance status of 0–1, and international prognostic index (IPI) score was distributed as follows: IPI 0 (7% of patients), 1 (15%), 2 (43%), 3 (26%), and 4 (9%). Of the 81 patients with locked treatment records, details on initial treatment can be found in table below. Conclusions: This first detailed analysis of primary treatment of PTCL indicates that this disease is still largely being treated with regimens derived primarily from studies of B-cell lymphomas and that a single standard of care does not exist. The fact that a meaningful proportion of patients were initially diagnosed with something other than their current diagnosis of PTCL points out the challenges of diagnosing the disease. While the intent of initial treatment for most patients is to affect a cure, more than 20% of patients were noted as deceased at the end of initial treatment, underscoring the need for more effective, disease-specific therapy. Disclosures: Foss: Merck: Study Grant, Study Grant Other; Celgene: Study Grant, Study Grant Other; Eisai: Consultancy; Seattle Genetics: Consultancy; Celgene: Consultancy; Allos: Consultancy. Carson:Allos: Consultancy, Speakers Bureau; Celgene: Consultancy, Speakers Bureau. Pinter-Brown:Allos: Consultancy, Membership on an entity's Board of Directors or advisory committees. Horwitz:Allos: Consultancy, Research Funding. Rosen:Allos: Consultancy, Honoraria. Pro:Celgene: Honoraria, Research Funding; Spectrum: Honoraria; Allos: Honoraria; Seattle Genetics: Research Funding. Gisselbrecht:Allos: Consultancy, Membership on an entity's Board of Directors or advisory committees. Hsi:Allos: Research Funding; Eli Lilly: Research Funding; Abbott: Research Funding; Cellerant Therapeutics: Research Funding; BD Biosciences: Research Funding; Millenium: Research Funding.


Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 4356-4356
Author(s):  
John S Manavalan ◽  
Ipsita Pal ◽  
Aidan Pursley ◽  
George A. Ward ◽  
Tomoko Smyth ◽  
...  

Abstract Background: The PTCL are a heterogeneous group of non-Hodgkin lymphomas originating from mature T-lymphocytes. They are aggressive diseases, often resistant to conventional chemotherapy. Despite the fact that a number of new agents have been approved, treatment paradigms tailored to the biology of the disease have yet to emerge. Tolinapant (ASTX660) is a potent antagonist of both cellular and X-linked inhibitors of apoptosis proteins (cIAP1/2 and XIAP), and is presently in phase I/II trials in patients with advanced solid tumors and lymphomas (NCT02503423). IAP antagonists enhance tumor necrosis factor (TNF) receptor superfamily mediated apoptosis (Ward GA, et al. Mol Cancer Ther. 2018), are potent anti-tumor immune enhancers and induce markers of immunogenic cell death such as damage associated molecular patterns (DAMPs; Ye W, et al, Oncoimmunology, 2020). Objectives: We explored the sensitivity of a range of T-cell lymphoma (TCL) cell lines to tolinapant. We establish the synergy coefficient between tolinapant and the HDAC inhibitor, romidepsin, and interrogated the molecular basis of their synergistic interaction. Methods: A panel of human T-cell lymphoma cell lines were tested in proliferation assays (CellTiterGlo) for sensitivity to tolinapant in the presence or absence of 10ng/ml of TNF alpha. For combination studies, with tolinapant and romidepsin, each drug was tested at the IC10 and IC40 concentrations in the presence or absence of TNF alpha. Synergy scores using the Excess over Bliss (EOB) model were calculated using SynergyFinder (Aleksandr Ianevski et al; Nucleic Acids Research, 2020). Additionally, the effects of tolinapant and romidepsin on the IAPs and caspases were analyzed by western blots. TNFR1 receptor expression and induction of DAMPs were also analyzed by flow cytometry. Results: TCL Lines demonstrated varying sensitivities to tolinapant in the presence or absence of TNF alpha. The most sensitive cell lines, ALK+ ALCL and SUP-M2, had IC50 concentrations ranging from 200nM ± 100nM to 20nM ± 1nM in the absence or presence of TNF alpha, respectively, at 24, 48 and 72hrs, while a resistant CTCL cell line HH had an IC50 concentration of over 20mM, even in the presence of TNF alpha. Interestingly, using western blot analysis, we found that the presence of TNF alpha increased the levels of cIAP1 in the tolinapant sensitive SUP-M2 cell line, but not in the resistant HH cell line. However, there was a concentration dependent decrease in cIAP1 but not in XIAP in both cell lines treated with tolinapant. Flow cytometry analysis demonstrated that tolinapant increases the expression of TNFR1 and DAMPs in a dose dependent manner on the sensitive SUP-M2, but not in the resistant HH cells. In combination experiments, using the EOB model, tolinapant plus romidepsin was found to be synergistic in the absence of TNF alpha, at 36hrs, in both the sensitive cell line SUP-M2 and the resistant cell line HH. In the presence of TNF alpha, synergism was seen only in the sensitive cell line SUP-M2 and antagonistic in the HH cell line (Fig. 3). In the tolinapant plus romidepsin treated samples, cIAP1 levels decreased in the SUP-M2 cell line, in the absence of TNF alpha, however, addition of TNF alpha did not alter the levels of cIAP1 in the SUP-M2 cells. The cIAP1 levels decreased in the HH cells treated with the combination, in both the presence or absence of TNF alpha (Figure). Our findings indicate that the synergy of the tolinapant plus romidepsin is not dependent on the presence of TNF alpha. Conclusion: Tolinapant has demonstrated potent cytotoxic effects against a broad range of TCL lines both as a monotherapy and in combination with the HDAC Inhibitor, romidepsin. In in vitro studies, T cell lymphoma cell lines demonstrated varying sensitivity to tolinapant with certain cell lines being more resistant, even in the presence of TNF alpha. Interestingly, the addition of romidepsin appeared to overcome the intrinsic resistance to tolinapant in the absence of TNF alpha. These data provide the rationale to continue to explore the combination of tolinapant and romidepsin in vivo and to investigate additional combinations with T-cell specific agents (e.g. pralatrexate, belinostat, azacitidine and decitabine). Figure 1 Figure 1. Disclosures Smyth: Astex Pharmaceuticals: Current Employment. Sims: Astex Pharmaceuticals: Current Employment. Loughran: Kymera Therapeutics: Membership on an entity's Board of Directors or advisory committees; Bioniz Therapeutics: Membership on an entity's Board of Directors or advisory committees; Keystone Nano: Membership on an entity's Board of Directors or advisory committees; Dren Bio: Membership on an entity's Board of Directors or advisory committees. Marchi: Kyowa Kirin: Honoraria; Myeloid Therapeutics: Honoraria; Astex: Research Funding; BMS: Research Funding; Merck: Research Funding; Kymera Therapeutics: Other: Scientific Advisor.


Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 623-623
Author(s):  
Bradley M. Haverkos ◽  
Onder Alpdogan ◽  
Robert Baiocchi ◽  
Jonathan E Brammer ◽  
Tatyana A. Feldman ◽  
...  

Abstract Introduction: EBV can be associated with several types of lymphomas, with reported frequencies of up to 8-10% in diffuse large B cell lymphoma (DLBCL), 30-100% in peripheral T cell lymphoma (PTCL) subtypes, 80% in post-transplant lymphoproliferative disease (PTLD), and 15-30% in classical Hodgkin lymphoma (HL), with adverse impact on outcomes. Nanatinostat (Nstat) is a Class-I selective oral HDAC inhibitor that induces the expression of the lytic BGLF4 EBV protein kinase in EBV + tumor cells, activating ganciclovir (GCV) via phosphorylation. This results in GCV-induced inhibition of viral and cellular DNA synthesis and apoptosis. Herein we report the final results from this exploratory study for patients with R/R EBV + lymphomas (NCT03397706). Methods: Patients aged ≥18 with histologically confirmed EBV + lymphomas (defined as any degree of EBER-ISH positivity), R/R to ≥1 prior systemic therapies with an absolute neutrophil count ≥1.0×10 9/L, platelet count ≥50×10 9/L, and no curative treatment options per investigator were enrolled into 5 dose escalation cohorts to determine the recommended phase 2 doses (RP2D) of Nstat + VGCV for phase 2 expansion. Phase 2 patients received the RP2D (Nstat 20 mg daily, 4 days per week + VGCV 900 mg orally daily) in 28-day cycles until disease progression or withdrawal. Primary endpoints were safety/RP2D (phase 1b) and overall response rate (ORR) (phase 2); secondary endpoints were pharmacokinetics, duration of response (DoR), time to response, progression free survival and overall survival. Responses were assessed using Lugano 2014 response criteria beginning at week 8. Results: As of 18 June 2021, 55 patients were enrolled (phase 1b: 25; phase 2: 30). Lymphoma subtypes were DLBCL (n=7), extranodal NK/T-cell (ENKTL) (n=9), PTCL, not otherwise specified (PTCL-NOS) (n=5), angioimmunoblastic T cell lymphoma (n=6), cutaneous T cell (n=1), HL (n=11), other B cell (n=3), and immunodeficiency-associated lymphoproliferative disorders (IA-LPD) (n=13), including PTLD (n=4), HIV-associated (n=5), and other [n=4: systemic lupus erythematosus (SLE) (n=2), common variable/primary immunodeficiency (n=2)]. Median age was 60 years (range 19-84), M/F 35/20, median number of prior therapies was 2 (range 1-11), 76% had ≥2 prior therapies, 78% were refractory to their most recent prior therapy, and 84% had exhausted standard therapies. EBER positivity ranged from <1 to 90% in 42 tumor biopsies with central lab review. The most common treatment-emergent adverse events (TEAEs) of all grades were nausea (38%), neutropenia (34%), thrombocytopenia (34%), and constipation (31%). Grade 3/4 TEAEs in >10% of patients included neutropenia (27%), thrombocytopenia (20%), anemia (20%), and lymphopenia (14%). Dose reductions and interruptions due to treatment-related AEs were reported in 14 (25%) and 16 (29%) patients, respectively. Only 1 patient had to discontinue therapy. There were no cases of CMV reactivation. For 43 evaluable patients (EBER-ISH + with ≥ 1 post-treatment response assessment) across all histologies, the investigator-assessed ORR and complete response (CR) rates were 40% (17/43) and 19% (8/43) respectively. Patients with T/NK-NHL (n=15; all refractory to their last therapy) had an ORR of 60% (n=9) with 27% (n=4) CRs. Two patients (ENKTL and PTCL-NOS) in PR and CR respectively were withdrawn at 6.7 and 6.6 months (m) respectively for autologous stem cell transplantation. For DLBCL (n=6), ORR/CR was 67%/33% (both CRs were in patients refractory to first-line R-CHOP). For IA-LPD (n=13), ORR/CR was 30%/20% (PTLD: 1 CR, other: 1 CR, 1 PR). For HL (n=10), there was 1 PR (4 SD). The median DoR for all responders was 10.4 m, with a median follow-up from response of 5.7 m (range 1.9-34.1 m). For the 17 responders, 8 lasted ≥ 6 months. Conclusions: The combination of Nstat and VGCV was well-tolerated with a manageable toxicity profile and shows promising efficacy in patients with R/R EBV + lymphomas, particularly in refractory T/NK-NHL, a heterogeneous group of aggressive lymphomas with dismal outcomes, with multiple durable responses. Further evaluation of this novel combination therapy for the treatment of recurrent EBV + lymphomas is ongoing in the phase 2 VT3996-202 trial. Disclosures Haverkos: Viracta Therapeutics, Inc.: Honoraria, Research Funding. Baiocchi: Prelude Therapeutics: Consultancy; viracta: Consultancy, Current holder of stock options in a privately-held company; Codiak Biosciences: Research Funding; Atara Biotherapeutics: Consultancy. Brammer: Seattle Genetics: Speakers Bureau; Celgene: Research Funding; Kymera Therapeutics: Consultancy. Feldman: Alexion, AstraZeneca Rare Disease: Honoraria, Other: Study investigator. Brem: Karyopharm: Membership on an entity's Board of Directors or advisory committees; SeaGen: Speakers Bureau; BeiGene: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Bayer: Membership on an entity's Board of Directors or advisory committees; KiTE Pharma: Membership on an entity's Board of Directors or advisory committees; TG Therapeutics: Consultancy; ADC Therapeutics: Membership on an entity's Board of Directors or advisory committees; Pharmacyclics/Janssen: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Morphosys/Incyte: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau. Scheinberg: Roche: Consultancy; Abbvie: Consultancy; BioCryst Pharmaceuticals: Consultancy; Alexion pharmaceuticals: Consultancy, Honoraria, Speakers Bureau; Novartis: Consultancy, Honoraria, Speakers Bureau. Joffe: AstraZeneca: Consultancy; Epizyme: Consultancy. Katkov: Viracta Therapeutics, Inc.: Current Employment. McRae: Viracta Therapeutics, Inc.: Current Employment. Royston: Viracta Therapeutics, Inc.: Current Employment. Rojkjaer: Viracta Therapeutics, Inc.: Current Employment. Porcu: Viracta: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Innate Pharma: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; BeiGene: Membership on an entity's Board of Directors or advisory committees, Research Funding; Incyte: Research Funding; Daiichi: Honoraria, Research Funding; Kiowa: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Spectrum: Consultancy; DrenBio: Consultancy.


Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 2937-2937
Author(s):  
Thomas E. Witzig ◽  
Lubomir Sokol ◽  
Eric D Jacobsen ◽  
Won-Seog Kim ◽  
Francine M. Foss ◽  
...  

Abstract Background Tipifarnib is a potent and selective inhibitor of the enzyme farnesyltransferase (FT). FT catalyzes post-translational attachment of farnesyl groups required for localization of signaling molecules to the inner cell membrane. CXCL12 is a chemokine that is essential for T cell homing to lymphoid organs and the bone marrow, and for the maintenance of immune cell progenitors. Herein we report preliminary efficacy, safety and biomarker data from a Phase 2 study of tipifarnib in angioimmunoblastic T-cell lymphoma (AITL) and CXCL12+ peripheral T-cell lymphoma (PTCL) patients (pts). Methods This Phase 2 study is a multi-institutional, single-arm, open-label trial initially designed as a two-stage (11+7 pts) cohort to determine the efficacy, safety and biomarkers of tipifarnib in pts with relapsed/refractory (R/R) PTCL, age >/=18 years and a performance status of 0-2. Based on initial findings, the study was amended to include a cohort of AITL (n=12) and PTCL (n=12) pts with the CXCL12 rs2839695 A/A genotype (CXCL12+ cohort). Pts received tipifarnib 300 mg administered orally twice daily on days 1-21 of 28-day treatment cycles until progression of disease (PD) or unacceptable toxicity. The primary endpoint of the study is overall response rate (ORR). Ancillary studies are also ongoing to investigate the prognostic value of CXCL12 expression in patients who received standard of care treatment. Results As of 25 July 2018, 34 PTCL pts (13 AITL, 1 ALK- ALCL, 20 PTCL-NOS) have been treated with tipifarnib, 19 pts in stages 1 and 2, and 15 pts in the ongoing AITL histology and CXCL12 cohorts. Median number of prior treatment regimens was 3. The most common treatment-related adverse events (AE) (grade ≥ 3) are hematological, including neutropenia (50%), thrombocytopenia (43%), leukopenia (33%), febrile neutropenia (27%), and anemia (20%). Skin and subcutaneous tissue disorders were reported in 9 pts, 6 of them with AITL histology. One pt with AITL experienced an episode of possible Stevens Johnson Syndrome that resolved with dose discontinuation and did not recur upon re-challenge at one dose level reduction. Of 18 evaluable patients enrolled in Stages 1 and 2 of the trial, 3 partial responses (PR), 2 of them in pts with AITL histology, and 4 best responses of stable disease (SD) were observed. Pre-treatment tumor tissue CXCL12 expression correlated with favorable pt outcomes. In the AITL cohort (10 evaluable pts), 1 PR and 1 SD have been observed so far, with 5 pts pending cycle 2 response evaluation. In the CXCL12+ cohort (n=3 evaluable pts), 1 SD has been observed, with 2 pts pending cycle 2 response evaluation. Plasma levels of CXCL12 decreased over time with tipifarnib treatment. Expression of CXCL12 mRNA and other biomarkers in pre-treatment biopsies of pts in the AITL and CXCL12+ cohorts are being evaluated using RT-PCR assays. In addition, the prognostic value of CXCL12 is being investigated in approximately 100 diagnostic specimens of PTCL pts who received standard therapy. Preliminary data suggest that CXCL12 overexpression is observed in approximately 25% of PTCL and negatively affects pt survival. Conclusion Preliminary activity of tipifarnib was observed in PTCL pts, particularly in those with tumors of AITL histology and high CXCL12 expression and enrollment continues. Disclosures Witzig: Celgene: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding. Sokol:Mallinckrodt Pharmaceuticals: Consultancy; Seattle Genetics: Consultancy; Spectrum Pharmaceuticals: Consultancy. Jacobsen:Merck: Consultancy; Seattle Genetics: Consultancy. Kim:Takeda: Research Funding; J&J: Research Funding; Mundipharma: Research Funding; Roche: Research Funding; Novartis: Research Funding; Kyowa-Kirin: Research Funding; Celltrion: Research Funding. Foss:Miragen: Consultancy, Speakers Bureau; Spectrum: Consultancy; Seattle genetics: Consultancy; Mallinkrodt: Consultancy. Advani:Bristol Myers Squibb: Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board, Research Funding; Pharmacyclics: Membership on an entity's Board of Directors or advisory committees, Research Funding; Kura: Research Funding; Merck: Research Funding; Roche/Genentech: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board, Research Funding; Kyowa: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board; Regeneron: Research Funding; Janssen: Research Funding; Bayer: Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board; Cell Medica: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board; Astra Zeneca: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board; Autolus: Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board; Seattle Genetics: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board, Research Funding; Gilead/Kite: Membership on an entity's Board of Directors or advisory committees, Other: Participated in an advisory board; Takeda: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Millenium: Research Funding; Agensys: Research Funding; Celgene: Research Funding; Forty Seven: Research Funding; Infinity: Research Funding. Marin Niebla:Amgen: Other: Medical education of Staff, Speakers Bureau; Roche: Consultancy, Other: Medical education of Staff, Speakers Bureau; Takeda: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Celgene: Other: Medical education of Staff, Speakers Bureau; Janssen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Medical education of Staff, Speakers Bureau. Piris:Kura: Honoraria; Takeda: Honoraria; Janssen: Honoraria; Gilead: Honoraria. Curry:Kura Oncology: Employment, Equity Ownership. Gualberto:Kura Oncology: Employment, Equity Ownership.


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 1557-1557
Author(s):  
Christiane Querfeld ◽  
Basem M. William ◽  
Jonathan E. Brammer ◽  
Lubomir Sokol ◽  
Yutaka Tagaya ◽  
...  

Background: Cutaneous T cell lymphoma is incurable with current therapies and there is an urgent need for more effective therapies. BNZ-1 is a pegylated peptide antagonist that binds to the common γc signaling receptor for the cytokines IL-2, IL-9 and IL-15. These cytokines, particularly IL-2 and IL-15, have been implicated in the pathogenesis of CTCL through activation of JAK/Stat signaling pathways, Therefore, we hypothesized that inhibition of the IL-2 and IL-15 signaling pathways in CTCL will induce antitumor activity in patients with CTCL. Methods: A multicenter, open-label Phase 1 study is ongoing to characterize the safety and tolerability of BNZ-1 (NCT03239392). Patients with a diagnosis of mycosis fungoides (MF) of any stage or Sézary syndrome (SS) are eligible for this trial. Pts are enrolled in sequential dose cohorts of 0.5 mg/kg, 1mg/kg, 2 mg/kg, and 4 mg/kg to receive intravenous dose of BNZ-1 to characterize safety, pharmacokinetics, pharmacodynamics, and evidence of antitumor activity. Infusions are administered weekly for four doses to evaluate for safety. Thereafter, patients are enrolled on an extension phase for 3 months of weekly dosing of BNZ-1. If patient attain a response, they are eligible for a long-term extension arm, as approved by the FDA. Blood samples are collected to assess the impact of BNZ-1 on the anti-tumor response. Results: pts with MF/SS (11 M/5F, median age 61 years, range 32-89) have been enrolled. Clinical stages include IB (n=6), IIA (n=1), IIB (n=6), IVA1 (n=2), IVB (n=1). Patients were previously treated with a median of 2 ( 1-5) topical therapies and 3 (1-11) systemic therapies. Single and sequential doses of weekly 1 mg, 2 mg, or 4 mg BNZ-1 infusions have been well tolerated. The most frequently reported adverse events were pruritus (n=9), fatigue (n=5) and dry skin (n=3). All treatment-related AEs were Grade 1 or 2 in severity. No SAEs or dose limiting toxicity have been observed to date. Notably reductions in mSWATs and CAILs was noted even in patients with advanced stage disease and/or with features of large cell transformation and folliculotropic subtype. Flow cytometry of peripheral blood at baseline and during treatment indicated activation of anti-lymphoma immune responses associated with the downregulatio of PD1. Concommittantly, excess expression of cytotoxic granules (perforin & Granzyme B) has been downregulated, suggesting the silencing of inflammatory T-cell responses. Conclusions: These preliminary Phase 1 results suggest that pegylated BNZ-1 is well-tolerated and inhibition of IL-2 and IL-15 leads to clinical improvement in patients with CTCL. Evidence for the rejuvenation of anti-lymphoma immunity and a decreasing inflammatory responses was seen in cases showing clinical response consistent with our hypothesis. An expansion cohort in CTCL is currently underway to validate these promising early results. Disclosures Querfeld: Trillium: Consultancy, Other: Investigator, Research Funding; Soligenix: Other: Investigator; Celgene: Other: Investigator, Research Funding; Medivir: Consultancy; Elorac: Other: Investigator, Research Funding; miRagen: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Investigator; Bioniz: Membership on an entity's Board of Directors or advisory committees, Other: Investigator; Kyowa: Membership on an entity's Board of Directors or advisory committees, Other: Investigator; Eisai: Other: Investigator; Helsinn: Consultancy, Membership on an entity's Board of Directors or advisory committees, Other: Investigator; City of Hope Cancer Center and Beckman Research Institute: Employment. William:Techspert: Consultancy; Celgene Corporation: Consultancy; Kyowa Kirin, Inc.: Consultancy; Guidepoint Global: Consultancy; Defined Health: Consultancy. Brammer:Celgene: Research Funding; Seatlle Genetics: Honoraria, Speakers Bureau. Sokol:EUSA: Consultancy. Tagaya:Bioniz: Research Funding; Bioniz: Membership on an entity's Board of Directors or advisory committees. Frohna:Bioniz: Employment. Azimi:Bioniz: Employment. Zain:Seattle Genetics: Honoraria, Speakers Bureau; spectrum: Honoraria.


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3328-3328 ◽  
Author(s):  
Lorenz Selberg ◽  
Peter Stadtherr ◽  
Sascha Dietrich ◽  
Thomas Luft ◽  
Andrea Bondong ◽  
...  

Although alloHCT is an accepted salvage treatment in defined settings of poor-risk NHL, its potential benefit in these indications remains controversial because virtually all published studies are uncontrolled and restricted to patients who were actually able to undergo transplantation. Here, we aimed at assessing the impact of alloHCT by measuring its outcome from the time of donor search indication rather than from the time of transplant, thereby taking into account those patients who fail to proceed to allografting for any reason. Study design and patients : In a single centre retrospective analysis, course and outcome of all patients with diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL) mantle cell lymphoma (MCL) and peripheral T-cell lymphoma (PTCL) who were considered as having an alloHCT indication according to accepted guidelines between 2004 and 2018 were recorded. Primary endpoint was overall survival (OS) from start of donor search. A key secondary endpoint was comparison of OS from the 3-month landmark by donor availability. Accepted donors were matched related donors (MRD), 10/10 matched unrelated donors (MUD), 9/10 compatible unrelated donors (MMUD), and mismatched related donors (MMRD), with haplo donors being used at our institution only since 2014. Results : Altogether a donor search was initiated in 187 patients (DLBCL 32%, FL 17%, MCL 23%, PTCL 28%). Median age was 54 (19-69) years with 74% being male. Within a median time from diagnosis to search initiation of 1.1 (0.1-19) years, a median of 4 (1-9) treatment lines had been administered, including an autoHCT in 50%. 69% of the patients had active disease at the time of search initiation. Only 2 patients underwent donor search in 1st remission (for Richter transformation and hepatosplenic T cell lymphoma, respectively). With a median follow-up of 6.2 (0.6-15.9) years, OS at 5 years after search initiation for DLBCL, FL, MCL, and PTCL was 25%, 44%, 52%, and 50%, respectively (Fig 1). 171 patients (91%) were alive at the 3-month landmark. For these, an MRD (20%), MUD (44%), MMUD (25%), or MMRD (7%) could be identified in 96% of the cases. AlloHCT was performed in 72% of all 187 patients, and in 79% of the patients alive at the 3-month landmark, with a significantly lower rate in DLBCL (69%) compared to the other entities. In patients who were actually transplanted, 5-year OS from landmark for DLBCL, FL, MCL and PTCL was 32%, 63%, 62%, and 62%, respectively, whereas only 5 of the 36 patients (14%) alive at the 3-month landmark not undergoing alloHCT for any reason survived long term. Due to the low rate of unsuccessful searches, donor vs no-donor landmark survival analyses were not possible. Conclusions: Despite donor search now being successful in virtually all cases, 20-30% of those patients intended for alloHCT for NHL will never proceed to transplant. However, long-term OS by ITT does not seem substantially worse than alloHCT outcome observed in registry studies restricted to patients actually transplanted, with DLBCL appearing inferior to the other 3 entities. Patients surviving the 3-month landmark but not undergoing alloHCT for any reason have a poor outlook. These results may serve as benchmark for novel therapeutic options entering the NHL treatment landscape. Disclosures Luft: Neovii: Research Funding; JAZZ: Research Funding. Schmitt:MSD: Membership on an entity's Board of Directors or advisory committees, Other: Sponsoring of Symposia; Therakos Mallinckrodt: Other: Financial Support. Dreger:Neovii, Riemser: Research Funding; MSD: Membership on an entity's Board of Directors or advisory committees, Other: Sponsoring of Symposia; AbbVie, Gilead, Novartis, Riemser, Roche: Speakers Bureau; AbbVie, AstraZeneca, Gilead, Janssen, Novartis, Riemser, Roche: Consultancy.


Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 1617-1617 ◽  
Author(s):  
Jehan Dupuis ◽  
Rene-Olivier Casasnovas ◽  
Herve Ghesquieres ◽  
Franck Morschhauser ◽  
Herve Tilly ◽  
...  

Abstract Abstract 1617 Background: Romidepsin is a selective class 1 histone deacetylase inhibitor approved by the FDA for patients with cutaneous T-cell lymphoma and PTCL who have received at least 1 prior therapy. In recurrent/refractory PTCL, it has been evaluated as a single agent in 2 phase II studies with overall response rates of 25–38% (Piekarz, Blood 2011;117:5827; Coiffier, J Clin Oncol 2012;30:631). Toxicity was mainly hematologic and digestive. The aim of the present study was to evaluate the safety, tolerability and efficacy of different doses of romidepsin in association with CHOP in patients with previously untreated PTCL. Methods: Patients with biopsy-proven PTCL were planned to receive 8 cycles of CHOP (cyclophosphamide 750 mg/m2 day 1, doxorubicin 50 mg/m2 day 1, vincristine 1,4 mg/m2 day 1, prednisone 40 mg/m2 days 1 – 5) in association with varying doses of romidepsin. Based on pharmacokinetic data and results of previous phase II studies, the starting dose of 10 mg/m2 on days 1 & 8 was chosen. The dose-variation scheme follows a traditional “3+3” design. Dose-limiting toxicity (DLT) were considered during the first 2 cycles. Results: Eighteen patients (11 male, 7 female, aged 31 to 78) have been included and are analyzable for toxicity during the first two cycles. Diagnoses were: PTCL, not otherwise specified (n=10), angioimmunoblastic TCL (n=4), other PTCL (n=4). ECOG performance status was good (0–1) in all but one patient; 17/18 had stage III-IV disease; LDH levels were elevated in 11/18. The age-adjusted IPI score was 0 (n=1), 1 (n=14), 2 (n=3). Significant, albeit tolerable haematological toxicity having been observed in the first two cohorts, the definition of DLT was modified during the course of the study. The study diagram is shown in the figure. Accrual of the phase Ib part of the study is now completed and the phase II part is ongoing with a dose of 12 mg/m2 D1&8. Serious adverse events of interest included: One episode of acute pulmonary edema after course 1 in 1 patient, acute coronary syndrome (n=1), deep venous thrombosis (n=1) and cardiac arrhythmia (n=1). Among 14 evaluable patients, 3 progressed during treatment or shortly after end of treatment; and 11 responded (partial response 3/14, complete response 8/14) for an overall response rate of 78%. The 4 other patients have not yet reached the 8 cycles. Conclusion: Romidepsin can be combined with CHOP at the price of foreseeable hematological toxicity. Some cardiovascular events have been observed but the relationship with romidepsin is questionable. The dose of 12 mg/m2 on days 1& 8 is currently evaluated in the phase 2 part of the study. Response rates seem promising, but longer follow-up is needed. Updated results will be presented at the meeting. Disclosures: Ribrag: Servier: Membership on an entity's Board of Directors or advisory committees, Research Funding; astrazeneca: Membership on an entity's Board of Directors or advisory committees; takeda: Membership on an entity's Board of Directors or advisory committees; bayer: Research Funding; sanofi: Research Funding. Coiffier:Celgene: Consultancy.


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