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Aslaner Ak M, Gedük A, Acar İH, Polat MG, Sunu C, Bolaman AZ, Hacıbekiroğlu T, Güvenç B, Ertop Ş. Long-Term Efficacy of Erythropoiesis-Stimulating Agents in Patients with Low-Risk or Intermediate-1-Risk Myelodysplastic Syndrome: Multicenter Real-Life Data. Turk J Haematol 2023; 40:92-100. [PMID: 36799095 PMCID: PMC10240155 DOI: 10.4274/tjh.galenos.2023.2022.0437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 02/15/2023] [Indexed: 02/18/2023] Open
Abstract
Objective This study was undertaken to evaluate the long-term clinical efficacy of epoetin alfa and darbepoetin alfa in patients with myelodysplastic syndrome (MDS) in a real-life setting. Materials and Methods A total of 204 patients with low-risk or intermediate-1-risk MDS who received epoetin alfa or darbepoetin alfa were included. Hemoglobin levels and transfusion needs were recorded before treatment and at 12 months, 24 months, 36 months, and 48 months of treatment. Results At the 36-month (p=0.025) and 48-month (p=0.022) visits, epoetin alfa yielded significantly higher hemoglobin levels compared to darbepoetin alfa. Transfusion needs were also significantly lower with epoetin alfa compared to darbepoetin alfa at 24 months (p=0.012) and in the low-risk group compared to the intermediate-risk group at 24 months (p=0.018), 36 months (p=0.025), and 48 months (p<0.001). Treatment response rates at the 24-month, 36-month, and 48-month visits in the epoetin alfa (43.0%, 33.6%, and 27.1%), darbepoetin alfa (29.9%, 22.7%, and 16.5%), low-risk (39.3%, 30.0%, and 26.0%), and intermediate-risk (29.6%, 24.1%, and 11.1%) groups were lower than those obtained at 12 months, and the values differed significantly for the 36-month and 48-month visits with values ranging from p<0.05 to p<0.001. Conclusion This real-life long-term ESA extension study investigated the clinical efficacy of epoetin alfa and darbepoetin alfa for up to 48 months, revealing that treatment efficacy reached a plateau starting from the 24th month of therapy with a continuing decrease in treatment response rates regardless of treatment type, risk status, or gender. Nonetheless, significantly higher hemoglobin levels and marked improvement in transfusion needs were evident in epoetin-treated patients compared to darbepoetin-treated patients and in the low-risk group compared to the intermediate-risk group.
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Affiliation(s)
- Müzeyyen Aslaner Ak
- Zonguldak Bülent Ecevit University Faculty of Medicine, Department of Hematology, Zonguldak, Türkiye
| | - Ayfer Gedük
- Kocaeli University Faculty of Medicine, Department of Hematology, Kocaeli, Türkiye
| | - İbrahim Halil Acar
- Çukurova University Faculty of Medicine, Department of Hematology, Adana, Türkiye
| | - Merve Gökçen Polat
- Kocaeli University Faculty of Medicine, Department of Hematology, Kocaeli, Türkiye
| | - Cenk Sunu
- Sakarya Training and Research Hospital, Clinic of Hematology, Sakarya, Türkiye
| | - Ali Zahit Bolaman
- Adnan Menderes University Faculty of Medicine, Department of Hematology, Aydın, Türkiye
| | - Tuğba Hacıbekiroğlu
- Sakarya Training and Research Hospital, Clinic of Hematology, Sakarya, Türkiye
| | - Birol Güvenç
- Çukurova University Faculty of Medicine, Department of Hematology, Adana, Türkiye
| | - Şehmus Ertop
- Zonguldak Bülent Ecevit University Faculty of Medicine, Department of Hematology, Zonguldak, Türkiye
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Chen C, Sun LZ, Ren Y, Rubin EH, Weinstock DM, Schmidt EV. Assessment of added activity of an antitumor agent. Contemp Clin Trials 2022; 123:106990. [PMID: 36323343 DOI: 10.1016/j.cct.2022.106990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/19/2022] [Accepted: 10/27/2022] [Indexed: 01/27/2023]
Abstract
An unprecedented number of novel oncology drugs are under preclinical and clinical development, and nearly all are developed in combinations. With an over-reliance on biological hypotheses, there is less effort to establish single agent activity before initiating late clinical development. This may be contributing to a decreased success rate going from phase 1 to approval in the immunotherapy era. Growing evidence in clinical trial data shows that the treatment benefit from most approved combination therapies can be explained by the independent drug action model. Using this working model, we develop a simple index to measure the added antitumor activity of a new drug based on mean response duration, an endpoint that naturally combines both response status and duration information for all patients, which is shown to be highly predictive of clinical benefit of FDA-approved anti-PD-(L)1 immunotherapies. This index sheds light on challenges and opportunities in contemporary oncology drug development and provides a practical tool to assist with decision-making in early clinical trials.
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Affiliation(s)
- Cong Chen
- Biostatistics and Research Decision Sciences, Merck & Co., Inc., Rahway, NJ 07065, USA.
| | - Linda Zhiping Sun
- Biostatistics and Research Decision Sciences, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Yixin Ren
- Biostatistics and Research Decision Sciences, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Eric H Rubin
- Oncology Early Development, Merck & Co., Inc., Rahway, NJ 07065, USA
| | | | - Emmett V Schmidt
- Oncology Early Development, Merck & Co., Inc., Rahway, NJ 07065, USA
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Stege HM, Haist M, Schultheis S, Fleischer MI, Mohr P, Ugurel S, Terheyden P, Thiem A, Kiecker F, Leiter U, Becker JC, Meissner M, Kleeman J, Pföhler C, Hassel J, Grabbe S, Loquai C. Response durability after cessation of immune checkpoint inhibitors in patients with metastatic Merkel cell carcinoma: a retrospective multicenter DeCOG study. Cancer Immunol Immunother 2021; 70:3313-3322. [PMID: 33870464 PMCID: PMC8505278 DOI: 10.1007/s00262-021-02925-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 03/23/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Immune checkpoint inhibitors (ICI) have led to a prolongation of progression-free and overall survival in patients with metastatic Merkel cell carcinoma (MCC). However, immune-mediated adverse events due to ICI therapy are common and often lead to treatment discontinuation. The response duration after cessation of ICI treatment is unknown. Hence, this study aimed to investigate the time to relapse after discontinuation of ICI in MCC patients. METHODS We analyzed 20 patients with metastatic MCC who have been retrospectively enrolled at eleven skin cancer centers in Germany. These patients have received ICI therapy and showed as best overall response (BOR) at least a stable disease (SD) upon ICI therapy. All patients have discontinued ICI therapy for other reasons than disease progression. Data on treatment duration, tumor response, treatment cessation, response durability, and tumor relapse were recorded. RESULTS Overall, 12 of 20 patients (60%) with MCC relapsed after discontinuation of ICI. The median response durability was 10.0 months. Complete response (CR) as BOR to ICI-treatment was observed in six patients, partial response (PR) in eleven, and SD in three patients. Disease progression was less frequent in patients with CR (2/6 patients relapsed) as compared to patients with PR (7/11) and SD (3/3), albeit the effect of initial BOR on the response durability was below statistical significance. The median duration of ICI therapy was 10.0 months. Our results did not show a correlation between treatment duration and the risk of relapse after treatment withdrawal. Major reasons for discontinuation of ICI therapy were CR (20%), adverse events (35%), fatigue (20%), or patient decision (25%). Discontinuation of ICI due to adverse events resulted in progressive disease (PD) in 71% of patients regardless of the initial response. A re-induction of ICI was initiated in 8 patients upon tumor progression. We observed a renewed tumor response in 4 of these 8 patients. Notably, all 4 patients showed an initial BOR of at least PR. CONCLUSION Our results from this contemporary cohort of patients with metastatic MCC indicate that MCC patients are at higher risk of relapse after discontinuation of ICI as compared to melanoma patients. Notably, the risk of disease progression after discontinuation of ICI treatment is lower in patients with initial CR (33%) as compared to patients with initial PR (66%) or SD (100%). Upon tumor progression, re-induction of ICI is a feasible option. Our data suggest that the BOR to initial ICI therapy might be a potential predictive clinical marker for a successful re-induction.
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Affiliation(s)
- H M Stege
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
| | - M Haist
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - S Schultheis
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - M I Fleischer
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - P Mohr
- Department of Dermatology, Elbe-Kliniken Buxtehude, Buxtehude, Germany
| | - S Ugurel
- Department of Dermatology, University Medical Center Essen, Essen, Germany
| | - P Terheyden
- Department of Dermatology, Allergology and Venerology, University Lübeck, Lübeck, Germany
| | - A Thiem
- Department of Dermatology, University Medical Center Würzburg, Würzburg, Germany
- Department of Dermatology, University Medical Center Rostock, Rostock, Germany
| | - F Kiecker
- Department of Dermatology and Allergology at the Charité, University Medical Center Berlin, Berlin, Germany
| | - U Leiter
- Dermato-Oncology, Department of Dermatology, University Medical Center Tübingen, Tübingen, Germany
| | - J C Becker
- Department of Dermatology, University Medical Center Essen, Essen, Germany
- German Consortium for Translational Oncology (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - M Meissner
- Department of Dermatology, University Medical Center Frankfurt, Frankfurt, Germany
| | - J Kleeman
- Department of Dermatology, University Medical Center Frankfurt, Frankfurt, Germany
| | - C Pföhler
- Department of Dermatology, University Medical Center Homburg, Homburg, Germany
| | - J Hassel
- Department of Dermatology, University Medical Center Heidelberg, Heidelberg, Germany
| | - S Grabbe
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - C Loquai
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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Swisher EM, Kristeleit RS, Oza AM, Tinker AV, Ray-Coquard I, Oaknin A, Coleman RL, Burris HA, Aghajanian C, O'Malley DM, Leary A, Welch S, Provencher D, Shapiro GI, Chen LM, Shapira-Frommer R, Kaufmann SH, Goble S, Maloney L, Kwan T, Lin KK, McNeish IA. Characterization of patients with long-term responses to rucaparib treatment in recurrent ovarian cancer. Gynecol Oncol 2021; 163:490-497. [PMID: 34602290 DOI: 10.1016/j.ygyno.2021.08.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/26/2021] [Accepted: 08/30/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To describe molecular and clinical characteristics of patients with high-grade recurrent ovarian carcinoma (HGOC) who had long-term responses to the poly(ADP-ribose) polymerase (PARP) inhibitor rucaparib. METHODS This post hoc analysis pooled patients from Study 10 (NCT01482715; Parts 2A and 2B; n = 54) and ARIEL2 (NCT01891344; Parts 1 and 2; n = 491). Patients with investigator-assessed complete or partial response per RECIST were classified based on duration of response (DOR): long (≥1 year), intermediate (6 months to <1 year), or short (<6 months). Next-generation sequencing was used to detect deleterious mutations and loss of heterozygosity (LOH) in tumors. RESULTS Overall, 25.3% (138/545) of enrolled patients were responders. Of these, 27.5% (38/138) had long-term responses; 28.3% (39/138) were intermediate- and 34.8% (48/138) were short-term responders. Most of the long-term responders harbored a BRCA1 or BRCA2 (BRCA) mutation (71.1%, 27/38), and BRCA structural variants were most frequent among long-term responders (14.8%; 4/27). Responders with HGOC harboring a BRCA structural variant (n = 5) had significantly longer DOR than patients with other mutation types (n = 81; median not reached vs 0.62 years; HR, 0.21; 95% CI, 0.10-0.43; unadjusted p = 0.014). Among responders with BRCA wild-type HGOC, most long- and intermediate-term responders had high genome-wide LOH: 81.8% (9/11) and 76.9% (10/13), respectively, including 7 with deleterious RAD51C, RAD51D, or CDK12 mutations. CONCLUSION Among patients who responded to rucaparib, a substantial proportion achieved responses lasting ≥1 year. These analyses demonstrate the relationship between DOR to PARP inhibitor treatment and molecular characteristics in HGOC, such as presence of reversion-resistant BRCA structural variants.
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Affiliation(s)
- Elizabeth M Swisher
- Division of Gynecologic Oncology, University of Washington, Seattle, WA, USA.
| | - Rebecca S Kristeleit
- Department of Oncology, University College London (UCL) Cancer Institute and UCL Hospitals, London, UK
| | - Amit M Oza
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | | | - Isabelle Ray-Coquard
- Medical Oncology Department, Centre Léon Bérard and University Claude Bernard and Groupe d'Investigateurs Nationaux pour l'Etude des Cancers Ovariens (GINECO), Lyon, France
| | - Ana Oaknin
- Gynecologic Cancer Program, Vall d'Hebron Institute of Oncology (VHIO), Hospital Universitari Vall d'Hebron, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Robert L Coleman
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Howard A Burris
- Sarah Cannon Research Institute at Tennessee Oncology, Nashville, TN, USA
| | - Carol Aghajanian
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - David M O'Malley
- Division of Gynecologic Oncology, The Ohio State University, James Cancer Center, Columbus, OH, USA
| | - Alexandra Leary
- Gynecological Unit, Gustave Roussy Cancer Center, INSERM U981, and Groupe d'Investigateurs Nationaux pour l'Etude des Cancers Ovariens (GINECO), Villejuif, France
| | - Stephen Welch
- Division of Medical Oncology, Western University, London, ON, Canada
| | - Diane Provencher
- Institut du Cancer de Montréal, Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montreal, QC, Canada
| | - Geoffrey I Shapiro
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Lee-May Chen
- Gynecologic Oncology Division, University of California San Francisco, San Francisco, CA, USA
| | | | | | - Sandra Goble
- Biostatistics, Clovis Oncology, Inc., Boulder, CO, USA
| | - Lara Maloney
- Clinical Development, Clovis Oncology, Inc., Boulder, CO, USA
| | - Tanya Kwan
- Molecular Diagnostics, Clovis Oncology, Inc., Boulder, CO, USA
| | - Kevin K Lin
- Molecular Diagnostics, Clovis Oncology, Inc., Boulder, CO, USA
| | - Iain A McNeish
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
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5
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Sun LZ, Wu C, Li X, Chen C, Schmidt EV. Independent action models and prediction of combination treatment effects for response rate, duration of response and tumor size change in oncology drug development. Contemp Clin Trials 2021; 106:106434. [PMID: 34004341 DOI: 10.1016/j.cct.2021.106434] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 03/05/2021] [Accepted: 05/10/2021] [Indexed: 11/16/2022]
Abstract
An unprecedented number of new cancer targets are in development, and most are being developed in combination therapies. Early oncology development is strategically challenged in choosing the best combinations to move forward to late stage development. The most common early endpoints to be assessed in such decision-making include objective response rate, duration of response and tumor size change. In this paper, using independent-drug-action and Bliss-drug-independence concepts as a foundation, we introduce simple models to predict combination therapy efficacy for duration of response and tumor size change. These models complement previous publications using the independent action models (Palmer 2017, Schmidt 2020) to predict progression-free survival and objective response rate and serve as new predictive models to understand drug combinations for early endpoints. The models can be applied to predict the combination treatment effect for early endpoints given monotherapy data, or to estimate the possible effect of one monotherapy in the combination if data are available from the combination therapy and the other monotherapy. Such quantitative work facilitates strategic planning and decision making in early stage oncology drug development.
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Affiliation(s)
- Linda Z Sun
- Biostatistics and Research Decision Sciences, Merck & Co., Inc., Kenilworth, NJ 07033, USA.
| | - Cai Wu
- Biostatistics and Research Decision Sciences, Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | - Xiaoyun Li
- Biostatistics and Research Decision Sciences, Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | - Cong Chen
- Biostatistics and Research Decision Sciences, Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | - Emmett V Schmidt
- Oncology Early Development, Merck & Co., Inc., Kenilworth, NJ 07033, USA
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6
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Sotelo M, Alonso-Gordoa T, Gajate P, Gallardo E, Morales-Barrera R, Pérez-Gracia JL, Puente J, Sánchez P, Castellano D, Durán I. Atezolizumab in locally advanced or metastatic urothelial cancer: a pooled analysis from the Spanish patients of the IMvigor 210 cohort 2 and 211 studies. Clin Transl Oncol 2020; 23:882-891. [PMID: 32897497 PMCID: PMC7979625 DOI: 10.1007/s12094-020-02482-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/18/2020] [Indexed: 12/28/2022]
Abstract
Background The studies IMvigor 210 cohort 2 and IMvigor211 evaluated the efficacy of atezolizumab in patients with locally advanced or metastatic urothelial cancer (mUC) upon progression to platinum-based chemotherapy worldwide. Yet, the real impact of this drug in specific geographical regions is unknown.
Materials and methods We combined individual-level data from the 131 patients recruited in Spain from IMvigor210 cohort 2 and IMvigor211 in a pooled analysis. Efficacy and safety outcomes were assessed in the overall study population and according to PD-L1 expression on tumour-infiltrating immune cells. Results Full data were available for 127 patients; 74 (58%) received atezolizumab and 53 (42%) chemotherapy. Atezolizumab patients had a numerically superior median overall survival although not reaching statistical significance (9.2 months vs 7.7 months). No statistically significant differences between arms were observed in overall response rates (20.3% vs 37.0%) or progression-free survival (2.1 months vs 5.3 months). Nonetheless, median duration of response was superior for the immunotherapy arm (non-reached vs 6.4 months; p = 0.005). Additionally, among the responders, the 12-month survival rates seemed to favour atezolizumab (66.7% vs 19.9%). When efficacy was analyzed based on PD-L1 expression status, no significant differences were found. Treatment-related adverse events of any grade occurred more frequently in the chemotherapy arm [46/57 (81%) vs 44/74 (59%)]. Conclusion Patients who achieved an objective response on atezolizumab presented a longer median duration of response and numerically superior 12 month survival rates when compared with chemotherapy responders along with a more favorable safety profile. PD-L1 expression did not discriminate patients who might benefit from atezolizumab.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antineoplastic Agents/adverse effects
- Antineoplastic Agents/therapeutic use
- B7-H1 Antigen/metabolism
- Carcinoma, Transitional Cell/drug therapy
- Carcinoma, Transitional Cell/metabolism
- Carcinoma, Transitional Cell/mortality
- Carcinoma, Transitional Cell/secondary
- Cohort Studies
- Female
- Humans
- Lymphocytes, Tumor-Infiltrating/metabolism
- Male
- Middle Aged
- Progression-Free Survival
- Spain
- Survival Rate
- Treatment Outcome
- Ureteral Neoplasms/drug therapy
- Ureteral Neoplasms/metabolism
- Ureteral Neoplasms/mortality
- Ureteral Neoplasms/pathology
- Urethral Neoplasms/drug therapy
- Urethral Neoplasms/metabolism
- Urethral Neoplasms/mortality
- Urethral Neoplasms/pathology
- Urinary Bladder Neoplasms/drug therapy
- Urinary Bladder Neoplasms/metabolism
- Urinary Bladder Neoplasms/mortality
- Urinary Bladder Neoplasms/pathology
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Affiliation(s)
- M Sotelo
- Marqués de Valdecilla University Hospital, Edificio Sur. Despacho 277, Avda Valdecilla s/n, 39005, Santander, Spain
| | | | - P Gajate
- Ramon y Cajal University Hospital, Madrid, Spain
| | - E Gallardo
- Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | | | | | - J Puente
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), CIBERONC, Madrid, Spain
| | - P Sánchez
- Medical Department, Roche Farma S.A., Madrid, Spain
| | - D Castellano
- Doce de Octubre University Hospital, Madrid, Spain
| | - I Durán
- Marqués de Valdecilla University Hospital, Edificio Sur. Despacho 277, Avda Valdecilla s/n, 39005, Santander, Spain.
- Instituto de Investigación Marqués de Valdecilla (IDIVAL), Santander, Spain.
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7
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Marth C, Vergote I, Scambia G, Oberaigner W, Clamp A, Berger R, Kurzeder C, Colombo N, Vuylsteke P, Lorusso D, Hall M, Renard V, Pignata S, Kristeleit R, Altintas S, Rustin G, Wenham RM, Mirza MR, Fong PC, Oza A, Monk BJ, Ma H, Vogl FD, Bach BA. ENGOT-ov-6/TRINOVA-2: Randomised, double-blind, phase 3 study of pegylated liposomal doxorubicin plus trebananib or placebo in women with recurrent partially platinum-sensitive or resistant ovarian cancer. Eur J Cancer 2016; 70:111-121. [PMID: 27914241 DOI: 10.1016/j.ejca.2016.09.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/26/2016] [Accepted: 09/01/2016] [Indexed: 10/20/2022]
Abstract
AIMS Trebananib, a peptide-Fc fusion protein, inhibits angiogenesis by inhibiting binding of angiopoietin-1/2 to the receptor tyrosine kinase Tie2. This randomised, double-blind, placebo-controlled phase 3 study evaluated whether trebananib plus pegylated liposomal doxorubicin (PLD) improved progression-free survival (PFS) in patients with recurrent epithelial ovarian cancer. METHODS Women with recurrent ovarian cancer (platinum-free interval ≤12 months) were randomised to intravenous PLD 50 mg/m2 once every 4 weeks plus weekly intravenous trebananib 15 mg/kg or placebo. PFS was the primary end-point; key secondary end-points were objective response rate (ORR) and duration of response (DOR). Owing to PLD shortages, enrolment was paused for 13 months; the study was subsequently truncated. RESULTS Two hundred twenty-three patients were enrolled. Median PFS was 7.6 months (95% CI, 7.2-9.0) in the trebananib arm and 7.2 months (95% CI, 4.8-8.2) in the placebo arm, with a hazard ratio of 0.92 (95% CI, 0.68-1.24). However, because the proportional hazards assumption was not fulfilled, the standard Cox model did not provide a reliable estimate of the hazard ratio. ORR in the trebananib arm was 46% versus 21% in the placebo arm (odds ratio, 3.43; 95% CI, 1.78-6.64). Median DOR was improved (trebananib, 7.4 months [95% CI, 5.7-7.6]; placebo, 3.9 months [95% CI, 2.3-6.5]). Adverse events with a greater incidence in the trebananib arm included localised oedema (61% versus 32%), ascites (29% versus 9%) and vomiting (45% versus 33%). CONCLUSIONS Trebananib demonstrated anticancer activity in this phase 3 study, indicated by improved ORR and DOR. Median PFS was not improved. No new safety signals were identified. TRIAL REGISTRATION ClinicalTrials.gov, NCT01281254.
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Affiliation(s)
- Christian Marth
- AGO-Austria and Department of Obstetrics and Gynecology, Medical University of Innsbruck, Innsbruck, Austria.
| | - Ignace Vergote
- BGOG and Department of Obstetrics and Gynecology, University Hospital Leuven, Leuven Cancer Institute, KU Leuven, Belgium
| | - Giovanni Scambia
- MITO and Dipartimento per la Tutela della Salute della Donna e della Vita Nascente del Bambino e Adolescente, Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Willi Oberaigner
- AGO-Austria and Department of Clinical Epidemiology of the Tirol Kliniken Ltd., Cancer Registry of Tyrol, Innsbruck, Austria
| | - Andrew Clamp
- Department of Medical Oncology, Institute of Cancer Sciences, University of Manchester, The Christie NHS Foundation Trust, Manchester, UK
| | - Regina Berger
- AGO-Austria and Department of Obstetrics and Gynecology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Kurzeder
- AGO-Study Group and Department of Gynecology and Gynecologic Oncology, Kliniken Essen Mitte/Evang. Huyssens Stiftung/Knappschaft GmbH, Essen, Germany
| | - Nicoletta Colombo
- MANGO and Istituto Europeo di Oncologia and Università Milano Bicocca, Milano, Italy
| | - Peter Vuylsteke
- BGOG and Department of Medical Oncology, CHU Université Catholique de Louvain, Site Sainte Elisabeth, Namur, Belgium
| | - Domenica Lorusso
- MITO and Unità di Ginecologia Oncologica, Fondazione IRCCS Istituto Nazionale Tumori, Milano, Italy
| | - Marcia Hall
- Department of Medical Oncology, Mount Vernon Cancer Centre, Northwood, UK
| | - Vincent Renard
- BGOG and Department of Oncology, AZ St. Lucas, Ghent, Belgium
| | - Sandro Pignata
- MITO and Department of Urology and Gynecology, Istituto Nazionale Tumori "Fondazione G. Pascale" IRCCS, Naples, Italy
| | - Rebecca Kristeleit
- Department of Medical Oncology, University College London Cancer Institute, London, UK
| | - Sevilay Altintas
- BGOG and Department of Medical Oncology, Antwerp University Hospital, Edegem, Belgium
| | - Gordon Rustin
- Department of Medical Oncology, Mount Vernon Cancer Centre, Northwood, UK
| | - Robert M Wenham
- Department of Gynecologic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | | | - Peter C Fong
- Medical Oncology Department, Auckland City Hospital, Auckland, New Zealand
| | - Amit Oza
- Department of Medicine, Princess Margaret Hospital, University of Toronto, ON, Canada
| | - Bradley J Monk
- Department of Obstetrics and Gynecology, University of Arizona Cancer Center at Dignity Health St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - Haijun Ma
- Global Development Oncology, Amgen Inc., Thousand Oaks, CA, USA
| | - Florian D Vogl
- Global Development Oncology, Amgen Inc., Thousand Oaks, CA, USA
| | - Bruce A Bach
- Global Development Oncology, Amgen Inc., Thousand Oaks, CA, USA
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