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Siddiqui BA, Chapin BF, Jindal S, Duan F, Basu S, Yadav SS, Gu AD, Espejo AB, Kinder M, Pettaway CA, Ward JF, Tidwell RSS, Troncoso P, Corn PG, Logothetis CJ, Knoblauch R, Hutnick N, Gottardis M, Drake CG, Sharma P, Subudhi SK. Immune and pathologic responses in patients with localized prostate cancer who received daratumumab (anti-CD38) or edicotinib (CSF-1R inhibitor). J Immunother Cancer 2023; 11:e006262. [PMID: 36948506 PMCID: PMC10040066 DOI: 10.1136/jitc-2022-006262] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2023] [Indexed: 03/24/2023] Open
Abstract
BACKGROUND The prostate tumor microenvironment (TME) is immunosuppressive, with few effector T cells and enrichment of inhibitory immune populations, leading to limited responses to treatments such as immune checkpoint therapies (ICTs). The immune composition of the prostate TME differs across soft tissue and bone, the most common site of treatment-refractory metastasis. Understanding immunosuppressive mechanisms specific to prostate TMEs will enable rational immunotherapy strategies to generate effective antitumor immune responses. Daratumumab (anti-CD38 antibody) and edicotinib (colony-stimulating factor-1 receptor (CSF-1R) inhibitor) may alter the balance within the prostate TME to promote antitumor immune responses. HYPOTHESIS Daratumumab or edicotinib will be safe and will alter the immune TME, leading to antitumor responses in localized prostate cancer. PATIENTS AND METHODS In this presurgical study, patients with localized prostate cancer received 4 weekly doses of daratumumab or 4 weeks of daily edicotinib prior to radical prostatectomy (RP). Treated and untreated control (Gleason score ≥8 in prostate biopsy) prostatectomy specimens and patient-matched pre- and post-treatment peripheral blood mononuclear cells (PBMCs) and bone marrow samples were evaluated. The primary endpoint was incidence of adverse events (AEs). The secondary endpoint was pathologic complete remission (pCR) rate. RESULTS Twenty-five patients were treated (daratumumab, n=15; edicotinib, n=10). All patients underwent RP without delays. Grade 3 treatment-related AEs with daratumumab occurred in 3 patients (12%), and no ≥grade 3 treatment-related AEs occurred with edicotinib. No changes in serum prostate-specific antigen (PSA) levels or pCRs were observed. Daratumumab led to a decreased frequency of CD38+ T cells, natural killer cells, and myeloid cells in prostate tumors, bone marrow, and PBMCs. There were no consistent changes in CSF-1R+ immune cells in prostate, bone marrow, or PBMCs with edicotinib. Neither treatment induced T cell infiltration into the prostate TME. CONCLUSIONS Daratumumab and edicotinib treatment was safe and well-tolerated in patients with localized prostate cancer but did not induce pCRs. Decreases in CD38+ immune cells were observed in prostate tumors, bone marrow, and PBMCs with daratumumab, but changes in CSF-1R+ immune cells were not consistently observed with edicotinib. Neither myeloid-targeted agent alone was sufficient to generate antitumor responses in prostate cancer; thus, combinations with agents to induce T cell infiltration (eg, ICTs) will be needed to overcome the immunosuppressive prostate TME.
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Affiliation(s)
- Bilal A Siddiqui
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Brian F Chapin
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Sonali Jindal
- The Immunotherapy Platform, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Fei Duan
- The Immunotherapy Platform, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Sreyashi Basu
- The Immunotherapy Platform, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Shalini S Yadav
- The Immunotherapy Platform, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ai-Di Gu
- The Immunotherapy Platform, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Alexsandra B Espejo
- The Immunotherapy Platform, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Michelle Kinder
- Janssen Research & Development, Spring House, Pennsylvania, USA
| | - Curtis A Pettaway
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - John F Ward
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Rebecca S S Tidwell
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Patricia Troncoso
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Paul G Corn
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Christopher J Logothetis
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Natalie Hutnick
- Janssen Research & Development, Spring House, Pennsylvania, USA
| | - Marco Gottardis
- Janssen Research & Development, Spring House, Pennsylvania, USA
| | - Charles G Drake
- Janssen Research & Development, Spring House, Pennsylvania, USA
- Department of Medicine, Columbia University Medical Center, New York, New York, USA
- Department of Urology, Columbia University Medical Center, New York, New York, USA
| | - Padmanee Sharma
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- The Immunotherapy Platform, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Sumit K Subudhi
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Oberstein PE, Eng C, Van Cutsem E, Elez E, Ducreux M, Patel S, Pang D, Milford L, Iwasawa R, Schnepp RW, Knoblauch R, Thayu M. A phase 1b/2, open-label study of amivantamab monotherapy or in combination with standard-of-care chemotherapy in participants with advanced or metastatic colorectal cancer. J Clin Oncol 2023. [DOI: 10.1200/jco.2023.41.4_suppl.tps279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
TPS279 Background: Amivantamab, a fully human EGFR and MET bispecific antibody, has shown clinical activity against tumors with primary activating EGFR mutations, EGFR resistance mutations, or MET pathway activation. Amivantamab has demonstrated activity in both EGFR- and MET-driven non-small cell lung cancer, with preclinical evidence demonstrating its ability to recruit immune effector cells. While two anti-EGFR antibodies are incorporated as part of the standard of care (SoC) for metastatic colorectal cancer (mCRC) patients, MET is highly expressed or amplified in subsets of mCRC and additionally plays a role in mediating resistance to anti-EGFR therapies; therefore, amivantamab may provide benefit in this setting. Methods: This open-label, multicenter, global Ph1b/2 study will assess the safety and anti-tumor activity of amivantamab as a monotherapy and characterize the safety and tolerability of amivantamab in addition to SoC chemotherapy in KRAS, NRAS, BRAF, and EGFR ectodomain wild type participants with advanced or metastatic CRC. The Ph2 amivantamab monotherapy Cohorts A and B will assess the anti-tumor activity in participants with left-sided CRC who have progressed on or after SoC fluoropyrimidine-, oxaliplatin-, and irinotecan-based chemotherapy and an anti-VEGF treatment, without (Cohort A) or with (Cohort B) prior exposure to anti-EGFR treatment. The Ph2 amivantamab monotherapy Cohort C will assess the antitumor activity in participants with right-sided CRC who have progressed on or after SoC fluoropyrimidine-, oxaliplatin-, and irinotecan-based chemotherapy and an anti-VEGF treatment, with or without an anti-EGFR treatment. The Ph1b dose confirmation cohorts (Ph1b-D and Ph1b-E) will assess the safety and confirm the recommended Ph2 combination dose (RP2CD) of amivantamab in addition to SoC chemotherapy regimens (mFOLFOX6 or FOLFIRI). Upon confirmation of the RP2CD, the Ph2 Cohorts D and E, which are distinct cohorts from Ph1b-D or Ph1b-E, will further characterize the safety, tolerability, and preliminary anti-tumor activity of amivantamab in addition to SoC mFOLFOX6 or FOLFIRI in mCRC patients who have progressed after front-line therapy. The primary objectives are to assess the anti-tumor activity of amivantamab as a monotherapy and characterize the safety of amivantamab when added to SoC chemotherapy in participants with mCRC (Ph2 cohorts), as well as to assess the RP2CD of amivantamab when added to SoC chemotherapy (Ph1b). The key secondary objectives are to characterize the safety of amivantamab as a monotherapy and to assess the anti-tumor activity of amivantamab when added to SoC chemotherapy in participants with mCRC. This study is currently enrolling (NCT05379595) as of August 2022 in 12 countries, with goal enrollment of 225 participants. Clinical trial information: NCT05379595 .
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Affiliation(s)
| | - Cathy Eng
- Vanderbilt-Ingram Cancer Center, Nashville, TN
| | | | - Elena Elez
- Vall d'Hebron University Hospital, Barcelona, Catalonia, Spain
| | | | | | - Dona Pang
- Janssen-Cil, Macquarie Park, Australia
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Krebs M, Spira AI, Cho BC, Besse B, Goldman JW, Janne PA, Ma Z, Mansfield AS, Minchom AR, Ou SHI, Salgia R, Wang Z, Llacer Perez C, Gao G, Curtin JC, Roshak A, Schnepp RW, Thayu M, Knoblauch R, Lee CK. Amivantamab in patients with NSCLC with MET exon 14 skipping mutation: Updated results from the CHRYSALIS study. J Clin Oncol 2022. [DOI: 10.1200/jco.2022.40.16_suppl.9008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
9008 Background: Amivantamab, a fully human bispecific antibody targeting epidermal growth factor receptor (EGFR) and MET, is approved for the treatment of non-small cell lung cancer (NSCLC) with EGFR exon 20 insertion after prior platinum-based chemotherapy. Given its bispecific nature, amivantamab is being explored in patients (pts) with primary MET exon 14 skipping mutation (METex14) in the MET-2 cohort of the CHRYSALIS study. Methods: CHRYSALIS (NCT02609776) is an ongoing phase 1 dose escalation/dose expansion study of amivantamab in pts with advanced NSCLC. Pts with primary METex14 whose disease progressed on or who declined current standard of care therapy were treated with amivantamab 1050 mg (pts <80 kg) or 1400 mg (pts ≥80 kg) weekly in cycle 1 and biweekly thereafter. Response was assessed by investigators using RECIST v1.1. Results: As of 2 Dec 2021, 43 pts with METex14 had received amivantamab. Median age was 70 y (range, 43-88), 58% were women, median prior lines of therapy was 2 (range, 0-10) [eg, crizotinib (n=13), capmatinib (n=11), tepotinib (n=5), anti-MET antibody (n=1)], and 23% had history of brain metastases at baseline. In 36 pts with ≥1 postbaseline disease assessment, median duration of follow-up was 5.8 months (range, 0.3-15.8); 6 pts had no prior treatment, 11 had no prior MET inhibitor, and 19 had a prior MET inhibitor. Overall response rate was 33% (50% [3/6] in treatment-naïve pts, 46% [5/11] in pts with no prior MET inhibitor, and 21% [4/19] in pts with prior MET inhibitor therapy). Clinical benefit rate was >54% regardless of prior treatment (Table). Median duration of response (DOR) was not reached (range, 2.1-12.2 months); 67% (8/13) had DOR ≥6 months. Ten of the 12 responders remain on treatment (6.0-14.4 months) with ongoing responses; 2 discontinued after 2 and 12 months, respectively. Safety profile was consistent with previously reported experience of amivantamab (Sabari 2021 JTO 16(3):S108-109). Treatment-related adverse events leading to dose reduction or discontinuation occurred in 3 pts, each. Conclusions: Amivantamab demonstrates anti-tumor activity in primary METex14 NSCLC including after prior MET inhibitor treatment. Enrollment is ongoing and updated data will be shown. Clinical trial information: NCT02609776. [Table: see text]
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Affiliation(s)
- Matthew Krebs
- The University of Manchester and The Christie NHS Foundation Trust, Manchester, United Kingdom
| | | | | | - Benjamin Besse
- Cancer Medicine Department, Gustave Roussy, Villejuif, France
| | | | - Pasi A. Janne
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston, MA
| | | | | | | | | | - Ravi Salgia
- City of Hope Comprehensive Cancer Center, Duarte, CA
| | - Zhijie Wang
- Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) -State Key Laboratory of Molecular Oncology, Beijing, China
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Nagasaka M, Goto K, Gomez J, Hida T, Shu C, Lee C, Park K, Cho B, Lee J, Ou S, Bestvina C, Natale R, Haddish-Berhane N, Bhattacharya A, Verheijen R, Agrawal T, Knoblauch R, Govindan R. P50.04 Amivantamab in Combination With Chemotherapy in Patients With Advanced Non-Small Cell Lung Cancer (NSCLC). J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jones RL, Herzog TJ, Patel SR, von Mehren M, Schuetze SM, Van Tine BA, Coleman RL, Knoblauch R, Triantos S, Hu P, Shalaby W, McGowan T, Monk BJ, Demetri GD. Cardiac safety of trabectedin monotherapy or in combination with pegylated liposomal doxorubicin in patients with sarcomas and ovarian cancer. Cancer Med 2021; 10:3565-3574. [PMID: 33960681 PMCID: PMC8178483 DOI: 10.1002/cam4.3903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/15/2021] [Accepted: 03/03/2021] [Indexed: 12/20/2022] Open
Abstract
Background As with other alkylating agents, cardiac dysfunction can occur with trabectedin therapy for advanced soft tissue sarcomas (STS) or recurrent ovarian cancer (ROC) where treatment options for advanced disease are still limited. Cardiac safety for trabectedin monotherapy (T) for STS or in combination with pegylated liposomal doxorubicin (T+PLD) for ROC was evaluated in this retrospective postmarketing regulatory commitment. Methods Patient data for multiple cardiac‐related treatment‐emergent adverse events (cTEAEs) were evaluated in pooled analyses of ten phase 2 trials, one phase 3 trial in STS (n = 982), and two phase 3 trials in ROC (n = 1231). Results Multivariate analyses on pooled trabectedin data revealed that cardiovascular medical history (risk ratio [RR (95% CI)]: 1.90 [1.24‐2.91]; p = 0.003) and age ≥65 years (RR [95% CI]: 1.78 [1.12‐2.83]; p = 0.014) were associated with increased risk for cTEAEs. Multivariate analyses showed increased risk of experiencing cTEAEs with T+PLD compared to PLD monotherapy (RR [95% CI]: 2.70 [1.75‐4.17]; p < 0.0001) and with history of prior cardiac medication (RR [95% CI]: 1.88 [1.16‐3.05]; p = 0.010). Conclusions For patients with STS or ROC who still have limited treatment options, trabectedin may be initiated after carefully considering benefit versus risk. Trial Registration (ClinicalTrials.gov): NCT01343277; NCT00113607; NCT01846611.
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Affiliation(s)
- Robin L Jones
- Sarcoma Unit, Royal Marsden Hospital/Institute of Cancer Research, London, UK
| | - Thomas J Herzog
- University of Cincinnati Cancer Center, University of Cincinnati, Cincinnati, OH, USA
| | - Shreyaskumar R Patel
- Department of Sarcoma Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Scott M Schuetze
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | | | | | | | | | - Peter Hu
- Janssen Research & Development, LLC, Raritan, NJ, USA
| | - Waleed Shalaby
- Medical Group Oncology, Janssen Scientific Affairs, LLC, Horsham, PA, USA
| | - Tracy McGowan
- Medical Group Oncology, Janssen Scientific Affairs, LLC, Horsham, PA, USA
| | - Bradley J Monk
- Arizona Oncology (US Oncology Network), University of Arizona College of Medicine, and Creighton University School of Medicine at St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - George D Demetri
- Sarcoma Center, Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Harvard Medical School and Ludwig Center at Harvard, Boston, MA, USA
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Pillai RN, Ramalingam SS, Thayu M, Lorenzini P, Alvarez Arias DA, Moy C, Hutnick N, Knoblauch R, Feng H, Kane C, Horn L, Reck M, Ponce S. Daratumumab Plus Atezolizumab in Previously Treated Advanced or Metastatic NSCLC: Brief Report on a Randomized, Open-Label, Phase 1b/2 Study (LUC2001 JNJ-54767414). JTO Clin Res Rep 2021; 2:100104. [PMID: 34589982 PMCID: PMC8474375 DOI: 10.1016/j.jtocrr.2020.100104] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 09/02/2020] [Accepted: 09/24/2020] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION The programmed death-ligand 1 inhibitor atezolizumab improves progression-free survival (PFS) and overall survival (OS) for patients with previously treated advanced NSCLC. Preclinical studies indicate that targeting CD38-positive cells with daratumumab may synergistically enhance atezolizumab's antitumor activity by increasing the effector T-cell activity. METHODS This phase 1b-2 study included a safety run-in (one cycle of daratumumab plus atezolizumab) and randomized phases (daratumumab plus atezolizumab versus atezolizumab alone). The primary objective of the randomized phase was to compare overall response rates. The secondary objectives included evaluations of safety, clinical benefit rate (stable disease or better), PFS, OS, and pharmacokinetics. RESULTS In total, 99 patients were enrolled (safety run-in, n = 7; randomized, n = 46 per arm). In the randomized phase, the overall response rate was 4.3% for daratumumab plus atezolizumab and 13.0% for atezolizumab alone (OR: 0.30; 95% confidence interval: 0.03-1.92). The respective clinical benefit rates were 52.2% and 43.5%. No improvements were observed in the median PFS or median OS for combination therapy. The study was terminated because of the limited efficacy of daratumumab plus atezolizumab. CONCLUSIONS Daratumumab plus atezolizumab therapy did not improve efficacy versus atezolizumab monotherapy for patients with previously treated advanced NSCLC.
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Affiliation(s)
- Rathi N. Pillai
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Atlanta, Georgia
| | - Suresh S. Ramalingam
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Atlanta, Georgia
| | - Meena Thayu
- Janssen Research & Development, LLC, Titusville, New Jersey
| | | | | | - Christopher Moy
- Janssen Research & Development, LLC, Spring House, Pennsylvania
| | - Natalie Hutnick
- Janssen Research & Development, LLC, Spring House, Pennsylvania
| | | | - Huaibao Feng
- Janssen Research & Development, LLC, Raritan, New Jersey
| | - Colleen Kane
- Janssen Research & Development, LLC, Spring House, Pennsylvania
| | - Leora Horn
- Division of Hematology and Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Martin Reck
- Department of Thoracic Oncology, LungenClinic Grosshansdorf, Airway Research Center North (ARCN), German Center for Lung Research, Grosshansdorf, Germany
| | - Santiago Ponce
- Department of Medical Oncology, Hospital Universitario 12 de Octubre, Madrid, Spain
- Centro Nacional de Investigaciones Oncologicas, Madrid, Spain
| | - LUC2001 Investigators
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Atlanta, Georgia
- Janssen Research & Development, LLC, Titusville, New Jersey
- Janssen Research & Development, LLC, Spring House, Pennsylvania
- Janssen Research & Development, LLC, Raritan, New Jersey
- Division of Hematology and Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
- Department of Thoracic Oncology, LungenClinic Grosshansdorf, Airway Research Center North (ARCN), German Center for Lung Research, Grosshansdorf, Germany
- Department of Medical Oncology, Hospital Universitario 12 de Octubre, Madrid, Spain
- Centro Nacional de Investigaciones Oncologicas, Madrid, Spain
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Yun J, Kang HN, Lee SH, Jeong SY, Park CW, Kim JH, Pyo KH, Lee JM, Kim SY, Hong MH, Kim HR, Thayu M, Curtin J, Knoblauch R, Lorenzi M, Cho BC. Abstract 5199: JNJ-61186372, an EGFR-cMet bispecific antibody, in EGFR Exon 20 insertion-driven advanced non-small cell lung cancer (NSCLC). Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-5199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
PURPOSE: Although EGFR exon20 insertion (ex20ins) mutations account for 4~12 % of EGFR mutant NSCLC patients, there is no effective and selectable anticancer drugs targeting ex20ins mutations so far due to various variant mutations in ex20ins mutations. Moreover, most EGFR ex20ins mutants show primary resistance to EGFR TKIs. JNJ-61186372 (JNJ-372), a bispecific antibody that targets the EGFR and cMet receptors, is currently being explored in a first-in-human study in patients with NSCLC. To better understand the mechanism of JNJ-372 activity in this patient population, we conducted preclinical studies exploring the activity of JNJ-372 in different EGFR ex20ins models.
METHODS: To elucidate whether JNJ-372 has antitumor effect in EGFR ex20ins mutants via EGFR and c-MET inhibition, cell viability, western blot, cell cycle, colony formation assay, FACS analysis were performed in JNJ-372 treated BaF3 cells, PDCs, PDOs, and PDX expressing EGFR ex20ins mutation. For mouse tumor models, JNJ-372 was administered i.p. twice a week at 10 mg/kg or 30 mg/kg. Antibody dependent cellular cytotoxicity (ADCC) assay was assessed to figure out whether JNJ-372 had ADCC effects. Referenced patients with ex20ins disease were administered 1050 mg JNJ-372 i.v. weekly for the first 4-week cycle, then biweekly for each subsequent cycle
RESULTS: JNJ-372 inhibited the growth of BaF3 cells, PDCs, and a PDO harboring a range of ex20ins, which were resistant to osimertinib and gefitinib. Mechanistic assays revealed the reduction of EGFR and cMet receptor levels and decreases in phospho-EGFR and c-Met, as well as inhibition of their downstream signaling pathways. Cleaved caspase-3 and BIMEL were upregulated at anti-proliferative doses, suggesting caspase-mediated cell death. JNJ-372 demonstrated corresponding antitumor activity in PDC and PDX models harboring different ex20ins; inhibition of signaling and engagement of the apoptotic pathway was confirmed in tumors of JNJ-372-treated mice. In PDCs with EGFR ex20ins mutation, we verified that JNJ-372 had a significant ADCC effect compared to EGFR antibody drug cetuximab. In the first-in-human trial, CT scans from two patients treated with JNJ-372 revealed reductions in tumor burden. A 58-year patient harboring H773delinsNPY showed -63% tumor reduction with progression-free survival of > 20 months and a 48-year patient harboring S768_D770dup showed -38.9% tumor reduction.
CONCLUSION: JNJ-372 drives antitumor activity in preclinical models of EGFR ex20ins, which have no therapeutic options in clinic, by decreasing EGFR and cMet receptor levels, inhibiting downstream signaling cascades, activating apoptotic signaling as well as ADCC. These results provide a promising therapeutic option to patients with EGFR ex20ins mutations and an understanding of the activity of JNJ-372 being observed in the first-in-human study.
Citation Format: Jiyeon Yun, Han Na Kang, Soo-Hwan Lee, Seo-Yoon Jeong, Chae Won Park, Jae-Hwan Kim, Kyoung-Ho Pyo, Ji Min Lee, Seok-Young Kim, Min Hee Hong, Hye Ryun Kim, Meena Thayu, Joshua Curtin, Roland Knoblauch, Matthew Lorenzi, Byoung Chul Cho. JNJ-61186372, an EGFR-cMet bispecific antibody, in EGFR Exon 20 insertion-driven advanced non-small cell lung cancer (NSCLC) [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 5199.
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Affiliation(s)
- Jiyeon Yun
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Han Na Kang
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soo-Hwan Lee
- 2JE-UK Institute for Cancer Research, Gumi, Republic of Korea
| | - Seo-Yoon Jeong
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Chae Won Park
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae-Hwan Kim
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyoung-Ho Pyo
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji Min Lee
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seok-Young Kim
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Min Hee Hong
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hye Ryun Kim
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Meena Thayu
- 3Janssen Research and Development, Pennsylvania, PA
| | | | | | | | - Byoung Chul Cho
- 1Yonsei University College of Medicine, Seoul, Republic of Korea
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Monk BJ, Herzog TJ, Wang G, Triantos S, Maul S, Knoblauch R, McGowan T, Shalaby WSW, Coleman RL. Data on prior pegylated liposomal doxorubicin (PLD) treatment in recurrent ovarian cancer: Post-hoc data analysis from the phase 3 randomized, open-label study comparing trabectedin and PLD versus PLD alone in patients with recurrent ovarian cancer. Data Brief 2020; 30:105465. [PMID: 32346557 PMCID: PMC7178483 DOI: 10.1016/j.dib.2020.105465] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/13/2020] [Accepted: 03/16/2020] [Indexed: 11/13/2022] Open
Abstract
The data presented herein are supplementary to our published primary article “A phase 3 randomized, open-label, multicenter trial for safety and efficacy of combined trabectedin and pegylated liposomal doxorubicin therapy for recurrent ovarian cancer”[1]. The exploratory analysis evaluated the impact of prior pegylated liposomal doxorubicin (PLD) therapy in patients who participated in a randomized, open-label study comparing combination therapy of trabectedin and PLD vs PLD alone in third-line recurrent ovarian cancer (ROC). These exploratory analyses showed that prior treatment with PLD in ROC does not impact the response and survival rates nor does it increase toxicities or negatively influence survival and response rates in both treatment groups.
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Affiliation(s)
- Bradley J Monk
- Arizona Oncology (US Oncology Network), University of Arizona, Creighton University, Phoenix, AZ, United States
| | - Thomas J Herzog
- University of Cincinnati Cancer Center, University of Cincinnati, Cincinnati, OH, United States
| | - George Wang
- Janssen Research & Development, Spring House, PA, United States
| | - Spyros Triantos
- Janssen Research & Development, Spring House, PA, United States
| | - Scott Maul
- Janssen Research & Development, Los Angeles, CA, United States
| | | | - Tracy McGowan
- Janssen Scientific Affairs, LLC, Horsham, PA, United States
| | | | - Robert L Coleman
- The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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Monk BJ, Herzog TJ, Wang G, Triantos S, Maul S, Knoblauch R, McGowan T, Shalaby WS, Coleman RL. A phase 3 randomized, open-label, multicenter trial for safety and efficacy of combined trabectedin and pegylated liposomal doxorubicin therapy for recurrent ovarian cancer. Gynecol Oncol 2020; 156:535-544. [DOI: 10.1016/j.ygyno.2019.12.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/26/2019] [Accepted: 12/27/2019] [Indexed: 01/08/2023]
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10
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Jones RL, Demetri GD, Schuetze SM, Milhem M, Elias A, Van Tine BA, Hamm J, McCarthy S, Wang G, Parekh T, Knoblauch R, Hensley ML, Maki RG, Patel S, von Mehren M. Efficacy and tolerability of trabectedin in elderly patients with sarcoma: subgroup analysis from a phase III, randomized controlled study of trabectedin or dacarbazine in patients with advanced liposarcoma or leiomyosarcoma. Ann Oncol 2019; 29:1995-2002. [PMID: 30084934 DOI: 10.1093/annonc/mdy253] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Background Treatment options for soft tissue sarcoma (STS) patients aged ≥65 years (elderly) can be limited by concerns regarding the increased risk of toxicity associated with standard systemic therapies. Trabectedin has demonstrated improved disease control in a phase III trial (ET743-SAR-3007) of patients with advanced liposarcoma or leiomyosarcoma after failure of anthracycline-based chemotherapy. Since previous retrospective analyses have suggested that trabectedin has similar safety and efficacy outcomes regardless of patient age, we carried out a subgroup analysis of the safety and efficacy observed in elderly patients enrolled in this trial. Patients and methods Patients were randomized 2 : 1 to trabectedin (n = 384) or dacarbazine (n = 193) administered intravenously every-3-weeks. The primary end point was overall survival (OS); secondary end points were progression-free survival (PFS), time-to-progression, objective response rate (ORR), duration of response, symptom severity, and safety. A post hoc analysis was conducted in the elderly patient subgroup. Results Among 131 (trabectedin = 94; dacarbazine = 37) elderly patients, disease characteristics were well-balanced and consistent with those of the total study population. Treatment exposure was longer in patients treated with trabectedin versus dacarbazine (median four versus two cycles, respectively), with a significantly higher proportion receiving prolonged therapy (≥6 cycles) in the trabectedin arm (43% versus 23%, respectively; P = 0.04). Elderly patients treated with trabectedin showed significantly improved PFS [4.9 versus 1.5 months, respectively; hazard ratio (HR)=0.40; P = 0.0002] but no statistically significant improvement in OS (15.1 versus 8.0 months, respectively; HR = 0.72; P = 0.18) or ORR (9% versus 3%, respectively; P = 0.43). The safety profile for elderly trabectedin-treated patients was comparable to that of the overall trabectedin-treated study population. Conclusions This subgroup analysis of the elderly population of ET743-SAR-3007 suggests that elderly patients with STS and good performance status can expect clinical benefit from trabectedin similar to that observed in younger patients. Trial registration www.clinicaltrials.gov, NCT01343277.
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Affiliation(s)
- R L Jones
- Seattle Cancer Care Alliance, Seattle
| | - G D Demetri
- Center for Sarcoma and Bone Oncology, Dana Farber Cancer Institute, Ludwig Center at Harvard, Boston
| | | | - M Milhem
- University of Iowa Hospitals and Clinics, Iowa City
| | - A Elias
- University of Colorado Cancer Center, Aurora
| | - B A Van Tine
- Division of Oncology, Washington University in St. Louis, St. Louis
| | - J Hamm
- Norton Cancer Institute, Louisville
| | - S McCarthy
- Clinical Oncology, Janssen Research and Development, Raritan
| | - G Wang
- Clinical Biostatistics, Janssen Research and Development, Raritan
| | - T Parekh
- Clinical Oncology, Janssen Research and Development, Raritan
| | - R Knoblauch
- Clinical Oncology, Janssen Research and Development, Raritan
| | - M L Hensley
- Memorial Sloan Kettering Cancer Center, New York
| | - R G Maki
- Monter Cancer Center, Northwell Health, Lake Success; Cold Spring Harbor Laboratory, Cold Spring Harbor
| | - S Patel
- Department of Sarcoma Medical Oncology, Division of Cancer Medicine, University of Texas M.D. Anderson Cancer Center, Houston
| | - M von Mehren
- Department of Hematology and Medical Oncology, Fox Chase Cancer Center, Philadelphia, USA.
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Patel S, von Mehren M, Reed DR, Kaiser P, Charlson J, Ryan CW, Rushing D, Livingston M, Singh A, Seth R, Forscher C, D'Amato G, Chawla SP, McCarthy S, Wang G, Parekh T, Knoblauch R, Hensley ML, Maki RG, Demetri GD. Overall survival and histology-specific subgroup analyses from a phase 3, randomized controlled study of trabectedin or dacarbazine in patients with advanced liposarcoma or leiomyosarcoma. Cancer 2019; 125:2610-2620. [PMID: 31173362 PMCID: PMC6771856 DOI: 10.1002/cncr.32117] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/15/2019] [Accepted: 03/09/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND We performed a randomized phase 3 study of trabectedin versus dacarbazine in previously-treated patients with liposarcoma/leiomyosarcoma (LPS/LMS). METHODS Patients were randomized 2:1 to trabectedin (n = 384) or dacarbazine (n = 193) administered intravenously every 3 weeks. The primary objective was overall survival (OS). Secondary objectives were progression-free survival, objective response rate, safety, and patient-reported outcomes, all previously reported and demonstrating superior disease control with trabectedin. Results of the final OS analysis in preplanned subgroups of patients with LPS/LMS are presented. RESULTS At the time of the final OS analysis, 577 patients had been assigned randomly, including 423 (73%) with LMS and 154 (27%) with LPS. The median duration of treatment exposure was higher in the trabectedin arm compared with the dacarbazine arm (4 vs 2 cycles), as was the proportion of patients receiving an extended number of therapy courses (≥6 cycles: 42% vs 22%). This pattern was consistent across histological subgroups: the median number of treatment cycles (4 vs 2 for both subgroups) and proportion of patients with ≥6 treatment cycles (LMS, 43% vs 24%; LPS, 40% vs 16%). Despite improved disease control by trabectedin, no improvement in OS was observed; the final median OS for trabectedin versus dacarbazine was 13.7 versus 13.1 months (P = .49). Sensitivity analyses of OS suggest confounding by post-study anticancer therapies, which were utilized in most patients in both treatment arms (71% vs 69%, respectively). CONCLUSION The final OS results demonstrated comparable survival between LPS/LMS patients receiving trabectedin or dacarbazine, which is consistent with the interim analysis results. Both LPS and LMS demonstrated improved disease control with trabectedin.
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Affiliation(s)
| | | | | | - Pamela Kaiser
- Lutheran General Advanced Care Center, Park Ridge, Illinois
| | | | - Christopher W Ryan
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Daniel Rushing
- Simon Cancer Center, Indiana University, Indianapolis, Indiana
| | - Michael Livingston
- Blumenthal Cancer Center, Carolinas HealthCare System, Charlotte, North Carolina
| | - Arun Singh
- UCLA Medical Center, Los Angeles, California
| | - Rahul Seth
- SUNY Upstate University Hospital, Syracuse, New York
| | | | - Gina D'Amato
- Georgia Cancer Specialists, Northside Hospital Cancer Institute, Atlanta, Georgia
| | | | | | - George Wang
- Janssen Research & Development, LLC, Raritan, New Jersey
| | - Trilok Parekh
- Janssen Research & Development, LLC, Raritan, New Jersey
| | | | | | | | - George D Demetri
- Center for Sarcoma and Bone Oncology, Dana-Farber Cancer Institute and Ludwig Center at Harvard, Harvard Medical School, Boston, Massachusetts
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12
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Cho B, Lee JS, Han JY, Cho E, Haura E, Lee K, Bauml J, Sanborn R, Curtis M, Attiyeh E, Haddish-Berhane N, Bae K, Knoblauch R, Sherman L, Lorenzi M, Park K. JNJ-61186372 (JNJ-372), an EGFR-cMET bispecific antibody, in advanced non-small cell lung cancer (NSCLC): An update on phase I results. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Park K, Ahn M, Lee S, Kim H, Hong M, Millington D, Curtis M, Triantos S, Chaplan S, Haddish-Berhane N, Knoblauch R, Aguilar Z, Laquerre S, Lorenzi M, Cho B. OA10.06 A First-in-Human Phase 1 Trial of the EGFR-cMET Bispecific Antibody JNJ-61186372 in Patients with Advanced Non-Small Cell Lung Cancer (NSCLC). J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.292] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Brahmer J, Johnson M, Awad M, Rajan A, Allred A, Knoblauch R, Zudaire E, Lorenzi M, Hassan R. P2.07-058 First-In-Human Study of JNJ-64041757, a Live Attenuated Listeria Monocytogenes Immunotherapy, for Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Jones R, Maki R, Patel S, Wang G, Shin C, Knoblauch R, Demetri G. Efficacy and safety of trabectedin in an elderly patient subgroup (≥65 years) with advanced leiomyosarcoma (LMS) or liposarcoma (LPS) from the Expanded Access Program (EAP). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx387.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Davis E, Schuetze S, Patel S, Maki R, Jones R, Shin C, Knoblauch R, Wang G, Smith M, Demetri G, Merriam P. Efficacy and safety of patients treated long-term with trabectedin (t) on the expanded access program: A retrospective analysis. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx387.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Monk B, Ghatage P, Parekh T, Henitz E, Knoblauch R, Matos-Pita A, Nieto A, Park Y, Cheng P, Li W, Favis R, Ricci D, Poveda A. Effect of BRCA1 and XPG mutations on treatment response to trabectedin and pegylated liposomal doxorubicin in patients with advanced ovarian cancer: exploratory analysis of the phase 3 OVA-301 study. Ann Oncol 2015; 26:914-920. [DOI: 10.1093/annonc/mdv071] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 02/09/2015] [Indexed: 01/05/2023] Open
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von Mehren M, Bookman M, Meropol NJ, Weiner LM, Sherman E, Li J, Knoblauch R, Parekh T, Cohen RB. Phase I study of the safety and pharmacokinetics of trabectedin with docetaxel in patients with advanced malignancies. Cancer Chemother Pharmacol 2015; 75:1047-55. [PMID: 25791363 PMCID: PMC4978949 DOI: 10.1007/s00280-015-2705-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 02/11/2015] [Indexed: 11/30/2022]
Abstract
PURPOSE Combination therapy with trabectedin and docetaxel was evaluated in patients with advanced malignancies. METHODS In this open-label phase 1 study, docetaxel (60 or 75 mg/m(2); 1-h intravenous infusion) was given on day 1 of a 21-day cycle in combination with escalating doses of trabectedin (0.4-1.3 mg/m(2) by 3-h intravenous infusion, 1 h after docetaxel) and prophylactic granulocyte colony-stimulating factor (G-CSF). Maximum tolerated dose (MTD) as primary objective and safety, plasma pharmacokinetics, and antitumor activity as secondary objectives were assessed. RESULTS Patients (N = 49) received a median of four cycles of treatment. MTD was 1.3 mg/m(2) trabectedin and 60 mg/m(2) docetaxel for patients with limited and 1.1 mg/m(2) trabectedin and 60 mg/m(2) docetaxel for patients with unlimited prior chemotherapy. Dose-limiting toxicities (during cycle 1) included elevated alanine aminotransferase (ALT) and fatigue in patients with limited prior chemotherapy and elevated ALT and febrile neutropenia in those with unlimited prior chemotherapy. The most common drug-related adverse events were nausea (65 %), fatigue (63 %), and neutropenia (53 %). One patient achieved a complete response. Thirty patients had stable disease, and 11 had stable disease for ≥6 months. Pharmacokinetic results for trabectedin plus docetaxel were similar to those previously reported for the single agents. CONCLUSION In patients with previously treated, advanced malignancies, the combination of therapeutic doses of trabectedin and docetaxel showed clinical activity and was tolerable with prophylactic G-CSF, with no evidence of clinically important drug interactions.
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Affiliation(s)
- Margaret von Mehren
- Department of Medical Oncology, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA, 19111, USA,
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19
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Machiels JP, Staddon A, Herremans C, Keung C, Bernard A, Phelps C, Khokhar NZ, Knoblauch R, Parekh TV, Dirix L, Sharma S. Impact of cytochrome P450 3A4 inducer and inhibitor on the pharmacokinetics of trabectedin in patients with advanced malignancies: open-label, multicenter studies. Cancer Chemother Pharmacol 2014; 74:729-37. [PMID: 25100135 DOI: 10.1007/s00280-014-2554-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/26/2014] [Indexed: 01/24/2023]
Abstract
PURPOSE To evaluate the pharmacokinetics, safety and survival of trabectedin, metabolized primarily by cytochrome P450 (CYP)3A4 enzyme, when coadministered with rifampin (CYP3A4 inducer) or ketoconazole (CYP3A4 inhibitor) in adult patients with advanced solid tumors. METHODS Two phase 1/2a, 2-way crossover studies were conducted. For rifampin study, 12 patients were randomized (1:1) to sequence of a cycle of trabectedin (1.3 mg/m(2), 3 h, i.v.) coadministered with rifampin (600 mg/day, 6-days), and a cycle of trabectedin monotherapy (1.3 mg/m(2), 3 h, i.v.). In ketoconazole study, eight patients were randomized (1:1) to sequence of a cycle of trabectedin (0.58 mg/m(2), 3 h, i.v.) coadministered with ketoconazole (200 mg, twice-daily, 15-doses), and a cycle of trabectedin monotherapy (1.3 mg/m(2), 3 h, i.v.). RESULTS The systemic exposure (geometric means) of trabectedin was decreased [22% (C max) and 31% (AUClast)] with rifampin coadministration and increased [22% (C max) and 66% (AUClast)] with ketoconazole coadministration. This correlated with an increased clearance with rifampin (39.6-59.8 L/h) and a decreased clearance with ketoconazole (20.3-12.0 L/h). Consistent with earlier studies, the most common (≥40%) treatment-emergent adverse events in both studies were nausea, vomiting, diarrhea, hepatic function abnormal, anemia, neutropenia, thrombocytopenia and leukopenia. CONCLUSIONS Coadministration of rifampin or ketoconazole altered the pharmacokinetics of trabectedin, but no new safety signals were observed. Coadministration of trabectedin with potent CYP3A4 inhibitors or inducers should be avoided if possible. If coadministration of trabectedin with a strong CYP3A4 inhibitor is required, close monitoring for toxicities is recommended, so that appropriate dose reductions can be instituted as warranted.
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Affiliation(s)
- Jean-Pascal Machiels
- Cancer Center, Service d'oncologie médicale, Cliniques universitaires Saint-Luc, Brussels, Belgium,
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20
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Monk B, Ghatage P, Parekh T, Henitz E, Knoblauch R, Soto Matos-Pita A, Nieto A, Park Y, Ricci D, Poveda A. Effect of BRCA1 and XPG mutations on treatment response to trabectedin and pegylated liposomal doxorubicin in subjects with advanced ovarian cancer: Exploratory analysis of phase III OVA-301 study. Gynecol Oncol 2014. [DOI: 10.1016/j.ygyno.2014.03.119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Ryan C, Danila D, Tolcher A, Chi K, Tran N, Knoblauch R, Kheoh T, Haqq C, Scher H, Molina A. 7056 POSTER QT/QTc Studies of Abiraterone Acetate in Patients With Metastatic Castration-Resistant Prostate Cancer (mCRPC) – Analysis of 3 Phase 1/2 Studies. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72007-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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Tabernero J, Dirix L, Schöffski P, Cervantes A, Lopez-Martin JA, Capdevila J, van Beijsterveldt L, Platero S, Hall B, Yuan Z, Knoblauch R, Zhuang SH. A Phase I First-in-Human Pharmacokinetic and Pharmacodynamic Study of Serdemetan in Patients with Advanced Solid Tumors. Clin Cancer Res 2011; 17:6313-21. [DOI: 10.1158/1078-0432.ccr-11-1101] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Oxelmark E, Knoblauch R, Arnal S, Su LF, Schapira M, Garabedian MJ. Genetic dissection of p23, an Hsp90 cochaperone, reveals a distinct surface involved in estrogen receptor signaling. J Biol Chem 2003; 278:36547-55. [PMID: 12835317 DOI: 10.1074/jbc.m305960200] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
p23 is an Hsp90-associated protein that regulates signal transduction by the estrogen receptor alpha (ER); however, the mechanism through which p23 governs ER function remains enigmatic. To obtain a collection of p23 molecules with distinct effects on ER signaling, we screened in yeast a series of random mutations as well as specific sequence alterations based on the p23 crystal structure and further analyzed these mutations for their effect on p23-Hsp90 association in vitro and in vivo. We found that the ability of the p23 mutants to decrease or increase ER signal transduction correlated with their association with Hsp90. We also identified a mutation in the C-terminal tail of p23, which displayed a dominant inhibitory effect on ER transcriptional activation and associates more avidly with Hsp90 relative to the wild type p23. Interestingly, this mutant interacts with Hsp90 in its non-ATP-bound state, whereas the wild type p23 protein interacts exclusively with the ATP-bound form of Hsp90, which may account for its dominant phenotype. In addition, we have uncovered a novel activity of p23 that antagonizes Hsp90 action during times of cell stress. Using molecular modeling and the p23 crystal structure, we found that the p23 mutations affecting ER signaling identified in the screen localized to one face of the molecule, whereas those that had no effect mapped to other parts of the protein. Thus, our structure/function analysis has identified an important regulatory surface on p23 involved in ER signaling and p23 binding to Hsp90.
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Affiliation(s)
- Ellinor Oxelmark
- Departments of Microbiology, Urology, and Structural Biology, Skirball Institute of Biomolecular Medicine
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25
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Abstract
The estrogen receptor alpha (ER) is a ligand-dependent transcription factor that plays a critical role in the development and progression of breast cancer, in part, by regulating target genes involved in cellular proliferation. To identify novel components that affect the ER transcriptional response, we performed a genetic screen in yeast and identified RDI1, a Rho guanine nucleotide dissociation inhibitor (Rho GDI), as a positive regulator of ER transactivation. Overexpression of the human homologue of RDI1, Rho GDIalpha, increases ERalpha, ERbeta, androgen receptor, and glucocorticoid receptor transcriptional activation in mammalian cells but not activation by the unrelated transcription factors serum response factor and Sp1. In contrast, expression of constitutively active forms of RhoA, Rac1, and Cdc42 decrease ER transcriptional activity, suggesting that Rho GDI increases ER transactivation by antagonizing Rho function. Inhibition of RhoA by expression of either the Clostridium botulinum C3 transferase or a dominant negative RhoA resulted in enhanced ER transcriptional activation, thus phenocopying the effect of Rho GDI expression on ER transactivation. Together, these findings establish the Rho GTPases as important modulators of ER transcriptional activation. Since Rho GTPases regulate actin polymerization, our findings suggest a link between the major regulators of cellular architecture and steroid receptor transcriptional response.
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Affiliation(s)
- L F Su
- Department of Microbiology and the Kaplan Comprehensive Cancer Center, New York University School of Medicine, New York, New York 10016, USA
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26
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Abstract
The mechanism of signal transduction by the estrogen receptor (ER) is complex and not fully understood. In addition to the ER, a number of accessory proteins are apparently required to efficiently transduce the steroid hormone signal. In the absence of estradiol, the ER, like other steroid receptors, is complexed with Hsp90 and other molecular chaperone components, including an immunophilin, and p23. This Hsp90-based chaperone complex is thought to repress the ER's transcriptional regulatory activities while maintaining the receptor in a conformation that is competent for high-affinity steroid binding. However, a role for p23 in ER signal transduction has not been demonstrated. Using a mutant ER (G400V) with decreased hormone binding capacity as a substrate in a dosage suppression screen in yeast cells (Saccharomyces cerevisiae), we identified the yeast homologue of the human p23 protein (yhp23) as a positive regulator of ER function. Overexpression of yhp23 in yeast cells increases ER transcriptional activation by increasing estradiol binding in vivo. Importantly, the magnitude of the effect of yhp23 on ER transcriptional activation is inversely proportional to the concentration of both ER and estradiol in the cell. Under conditions of high ER expression, ER transcriptional activity is largely independent of yhp23, whereas at low levels of ER expression, ER transcriptional activation is primarily dependent on yhp23. The same relationship holds for estradiol levels. We further demonstrate that yhp23 colocalizes with the ER in vivo. Using a yhp23-green fluorescent protein fusion protein, we observed a redistribution of yhp23 from the cytoplasm to the nucleus upon coexpression with ER. This nuclear localization of yhp23 was reversed by the addition of estradiol, a finding consistent with yhp23's proposed role as part of the aporeceptor complex. Expression of human p23 in yeast partially complements the loss of yhp23 function with respect to ER signaling. Finally, ectopic expression of human p23 in MCF-7 breast cancer cells increases both hormone-dependent and hormone-independent transcriptional activation by the ER. Together, these results strongly suggest that p23 plays an important role in ER signal transduction.
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Affiliation(s)
- R Knoblauch
- Department of Microbiology and Kaplan Comprehensive Cancer Center, New York University School of Medicine, New York, New York 10016, USA
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Di Marzio P, Choe S, Ebright M, Knoblauch R, Landau NR. Mutational analysis of cell cycle arrest, nuclear localization and virion packaging of human immunodeficiency virus type 1 Vpr. J Virol 1995; 69:7909-16. [PMID: 7494303 PMCID: PMC189735 DOI: 10.1128/jvi.69.12.7909-7916.1995] [Citation(s) in RCA: 229] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Human immunodeficiency virus type 1 Vpr is a virion-associated, regulatory protein that is required for efficient viral replication in monocytes/macrophages. The protein is believed to act in conjunction with the Gag matrix protein to allow import of the viral preintegration complex in nondividing cells. In cells, Vpr localizes to the nucleus. Recently, we showed that Vpr prevents the activation of p34cdc2-cyclin B. This results in arrest of Vpr-expressing cells in the G2/M phase of the cell cycle. Here, we use a panel of expression vectors encoding Vpr molecules mutated in the amino-terminal alpha-helical region, the central hydrophobic region, or the carboxy-terminal basic region to define the functional domains of the protein. The results showed cell cycle arrest was largely controlled by the carboxy-terminal basic domain of the protein. In contrast, the amino-terminal alpha-helical region of Vpr was required for nuclear localization and packaging into virions. The carboxy terminus appeared to be unnecessary for nuclear localization. In the alpha-helical region, mutation of Ala-30 to Pro resulted in a protein that localized to the cytoplasm. Surprisingly, fusion of Vpr to luciferase resulted in a molecule that failed to localize to the nucleus. In addition, we show that simian immunodeficiency virus Vpr, but not Vpx, induces G2 arrest. We speculate that Vpr has two sites for interaction with cellular factors: one in the alpha-helical region that specifies nuclear localization and one in the carboxy-terminal domain that is required for Cdc2 inhibition.
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Affiliation(s)
- P Di Marzio
- Aaron Diamond AIDS Research Center, New York, New York, USA
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Abstract
The duration of speed reductions attributable to radar detector use was observed. When the entire traffic stream was exposed to police radar, the proportion of vehicles traveling more than 10 mph over the speed limit dropped initially from 42% to 28%, but by one mile after exposure, this percentage had already increased to 38%. When speeding vehicles with radar detectors (about 45% of all speeding vehicles) were exposed to police radar, speeds dropped by approximately 15%, but by one mile after exposure, nearly half of the reduction was recovered. These findings indicate that radar detector users slow only briefly when alerted to police radar and that radar detectors are use primarily to avoid speed limit enforcement.
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Affiliation(s)
- N Teed
- Insurance Institute for Highway Safety, Arlington, VA 22201
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