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Tap WD, Villalobos VM, Cote GM, Burris H, Janku F, Mir O, Beeram M, Wagner AJ, Jiang L, Wu B, Choe S, Yen K, Gliser C, Fan B, Agresta S, Pandya SS, Trent JC. Phase I Study of the Mutant IDH1 Inhibitor Ivosidenib: Safety and Clinical Activity in Patients With Advanced Chondrosarcoma. J Clin Oncol 2020; 38:1693-1701. [PMID: 32208957 PMCID: PMC7238491 DOI: 10.1200/jco.19.02492] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2020] [Indexed: 01/04/2023] Open
Abstract
PURPOSE Surgery is the primary therapy for localized chondrosarcoma; for locally advanced and/or metastatic disease, no known effective systemic therapy exists. Mutations in the isocitrate dehydrogenase 1/2 (IDH1/2) enzymes occur in up to 65% of chondrosarcomas, resulting in accumulation of the oncometabolite D-2-hydroxyglutarate (2-HG). Ivosidenib (AG-120) is a selective inhibitor of mutant IDH1 approved in the United States for specific cases of acute myeloid leukemia. We report outcomes of patients with advanced chondrosarcoma in an ongoing study exploring ivosidenib treatment. PATIENTS AND METHODS This phase I multicenter open-label dose-escalation and expansion study of ivosidenib monotherapy enrolled patients with mutant IDH1 advanced solid tumors, including chondrosarcoma. Ivosidenib was administered orally (100 mg twice daily to 1,200 mg once daily) in continuous 28-day cycles. Responses were assessed every other cycle using RECIST (version 1.1). RESULTS Twenty-one patients (escalation, n = 12; expansion, n = 9) with advanced chondrosarcoma received ivosidenib (women, n = 8; median age, 55 years; range, 30-88 years; 11 had received prior systemic therapy). Treatment-emergent adverse events (AEs) were mostly grade 1 or 2. Twelve patients experienced grade ≥ 3 AEs; only one event was judged treatment related (hypophosphatemia, n = 1). Plasma 2-HG levels decreased substantially in all patients (range, 14%-94.2%), to levels seen in healthy individuals. Median progression-free survival (PFS) was 5.6 months (95% CI, 1.9 to 7.4 months); the PFS rate at 6 months was 39.5%. Eleven (52%) of 21 patients experienced stable disease. CONCLUSION In patients with chondrosarcoma, ivosidenib showed minimal toxicity, substantial 2-HG reduction, and durable disease control. Future studies of ivosidenib monotherapy or rational combination approaches should be considered in patients with advanced mutant IDH1 chondrosarcoma.
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Kurzrock R, Bowles DW, Kang H, Meric-Bernstam F, Hainsworth J, Spigel DR, Bose R, Burris H, Sweeney CJ, Beattie MS, Blotner S, Schulze K, Cuchelkar V, Swanton C. Targeted therapy for advanced salivary gland carcinoma based on molecular profiling: results from MyPathway, a phase IIa multiple basket study. Ann Oncol 2020; 31:412-421. [PMID: 32067683 PMCID: PMC9743163 DOI: 10.1016/j.annonc.2019.11.018] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/08/2019] [Accepted: 11/28/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Systemic therapy options for salivary cancers are limited. MyPathway (NCT02091141), a phase IIa study, evaluates targeted therapies in non-indicated tumor types with actionable molecular alterations. Here, we present the efficacy and safety results for a subgroup of MyPathway patients with advanced salivary gland cancer (SGC) matched to targeted therapies based on tumor molecular characteristics. PATIENTS AND METHODS MyPathway is an ongoing, multiple basket, open-label, non-randomized, multi-center study. Patients with advanced SGC received pertuzumab + trastuzumab (HER2 alteration), vismodegib (PTCH-1/SMO mutation), vemurafenib (BRAF V600 mutation), or atezolizumab [high tumor mutational burden (TMB)]. The primary endpoint is the objective response rate (ORR). RESULTS As of January 15, 2018, 19 patients with SGC were enrolled and treated in MyPathway (15 with HER2 amplification and/or overexpression and one each with a HER2 mutation without amplification or overexpression, PTCH-1 mutation, BRAF mutation, and high TMB). In the 15 patients with HER2 amplification/overexpression (with or without mutations) who were treated with pertuzumab + trastuzumab, 9 had an objective response (1 complete response, 8 partial responses) for an ORR of 60% (9.2 months median response duration). The clinical benefit rate (defined by patients with objective responses or stable disease >4 months) was 67% (10/15), median progression-free survival (PFS) was 8.6 months, and median overall survival was 20.4 months. Stable disease was observed in the patient with a HER2 mutation (pertuzumab + trastuzumab, n = 1/1, PFS 11.0 months), and partial responses in patients with the PTCH-1 mutation (vismodegib, n = 1/1, PFS 14.3 months), BRAF mutation (vemurafenib, n = 1/1, PFS 18.5 months), and high TMB (atezolizumab, n = 1/1, PFS 5.5+ months). No unexpected toxicity occurred. CONCLUSIONS Overall, 12 of 19 patients (63%) with advanced SGC, treated with chemotherapy-free regimens matched to specific molecular alterations, experienced an objective response. Data from MyPathway suggest that matched targeted therapy for SGC has promising efficacy, supporting molecular profiling in treatment determination.
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Varga A, Soria JC, Hollebecque A, LoRusso P, Bendell J, Huang SMA, Wagle MC, Okrah K, Liu L, Murray E, Sanabria-Bohorquez SM, Tagen M, Dokainish H, Mueller L, Burris H. A First-in-Human Phase I Study to Evaluate the ERK1/2 Inhibitor GDC-0994 in Patients with Advanced Solid Tumors. Clin Cancer Res 2019; 26:1229-1236. [PMID: 31848189 DOI: 10.1158/1078-0432.ccr-19-2574] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/27/2019] [Accepted: 12/13/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE ERK1/2 signaling can be dysregulated in cancer. GDC-0994 is an oral inhibitor of ERK1/2. A first-in-human, phase I dose escalation study of GDC-0994 was conducted in patients with locally advanced or metastatic solid tumors. PATIENTS AND METHODS GDC-0994 was administered once daily on a 21-day on/7-day off schedule to evaluate safety, pharmacokinetics, and preliminary signs of efficacy. Patients with pancreatic adenocarcinoma and BRAF-mutant colorectal cancer were enrolled in the expansion stage. RESULTS Forty-seven patients were enrolled in six successive cohorts (50-800 mg). A single DLT of grade 3 rash occurred at 600 mg. The most common drug-related adverse events (AE) were diarrhea, rash, nausea, fatigue, and vomiting. Pharmacokinetic data showed dose-proportional increases in exposure, with a mean half-life of 23 hours, supportive of once daily dosing. In evaluable paired biopsies, MAPK pathway inhibition ranged from 19% to 51%. Partial metabolic responses by FDG-PET were observed in 11 of 20 patients across dose levels in multiple tumor types. Overall, 15 of 45 (33%) patients had a best overall response of stable disease and 2 patients with BRAF-mutant colorectal cancer had a confirmed partial response. CONCLUSIONS GDC-0994 had an acceptable safety profile and pharmacodynamic effects were observed by FDG-PET and in serial tumor biopsies. Single-agent activity was observed in 2 patients with BRAF-mutant colorectal cancer.
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Jerusalem G, de Boer RH, Hurvitz S, Yardley DA, Kovalenko E, Ejlertsen B, Blau S, Özgüroglu M, Landherr L, Ewertz M, Taran T, Fan J, Noel-Baron F, Louveau AL, Burris H. Everolimus Plus Exemestane vs Everolimus or Capecitabine Monotherapy for Estrogen Receptor-Positive, HER2-Negative Advanced Breast Cancer: The BOLERO-6 Randomized Clinical Trial. JAMA Oncol 2019; 4:1367-1374. [PMID: 29862411 DOI: 10.1001/jamaoncol.2018.2262] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Importance Everolimus plus exemestane and capecitabine are approved second-line therapies for advanced breast cancer. Objective A postapproval commitment to health authorities to estimate the clinical benefit of everolimus plus exemestane vs everolimus or capecitabine monotherapy for estrogen receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer. Design Open-label, randomized, phase 2 trial of treatment effects in postmenopausal women with advanced breast cancer that had progressed during treatment with nonsteroidal aromatase inhibitors. Interventions Patients were randomized to 3 treatment regimens: (1) everolimus (10 mg/d) plus exemestane (25 mg/d); (2) everolimus alone (10 mg/d); and (3) capecitabine alone (1250 mg/m2 twice daily). Main Outcomes and Measures Estimated hazard ratios (HRs) of progression-free survival (PFS) for everolimus plus exemestane vs everolimus alone (primary objective) or capecitabine alone (key secondary objective). Safety was a secondary objective. No formal statistical comparisons were planned. Results A total of 309 postmenopausal women were enrolled, median age, 61 years (range, 32-88 years). Of these, 104 received everolimus plus exemestane; 103, everolimus alone; and 102, capecitabine alone. Median follow-up from randomization to the analysis cutoff (June 1, 2017) was 37.6 months. Estimated HR of PFS was 0.74 (90% CI, 0.57-0.97) for the primary objective of everolimus plus exemestane vs everolimus alone and 1.26 (90% CI, 0.96-1.66) for everolimus plus exemestane vs capecitabine alone. Between treatment arms, potential informative censoring was noted, and a stratified multivariate Cox regression model was used to account for imbalances in baseline characteristics; a consistent HR was observed for everolimus plus exemestane vs everolimus (0.73; 90% CI, 0.56-0.97), but the HR was closer to 1 for everolimus plus exemestane vs capecitabine (1.15; 90% CI, 0.86-1.52). Grade 3 to 4 adverse events were more frequent with capecitabine (74%; n = 75) vs everolimus plus exemestane (70%; n = 73) or everolimus alone (59%; n = 61). Serious adverse events were more frequent with everolimus plus exemestane (36%; n = 37) vs everolimus alone (29%; n = 30) or capecitabine (29%; n = 30). Conclusions and Relevance These findings suggest that everolimus plus exemestane combination therapy offers a PFS benefit vs everolimus alone, and they support continued use of this therapy in this setting. A numerical PFS difference with capecitabine vs everolimus plus exemestane should be interpreted cautiously owing to imbalances among baseline characteristics and potential informative censoring. Trial Registration ClinicalTrials.gov identifier: NCT01783444.
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Naing A, Infante J, Goel S, Burris H, Black C, Marshall S, Achour I, Barbee S, May R, Morehouse C, Pollizzi K, Song X, Steele K, Elgeioushi N, Walcott F, Karakunnel J, LoRusso P, Weise A, Eder J, Curti B, Oberst M. Anti-PD-1 monoclonal antibody MEDI0680 in a phase I study of patients with advanced solid malignancies. J Immunother Cancer 2019; 7:225. [PMID: 31439037 PMCID: PMC6704567 DOI: 10.1186/s40425-019-0665-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/05/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The safety, efficacy, pharmacokinetics, and pharmacodynamics of the anti-programmed cell death-1 antibody MEDI0680 were evaluated in a phase I, multicenter, dose-escalation study in advanced solid malignancies. METHODS MEDI0680 was administered intravenously once every 2 weeks (Q2W) or once every 3 weeks at 0.1, 0.5, 2.5, 10 or 20 mg/kg. Two cohorts received 20 mg/kg once a week for 2 or 4 weeks, then 20 mg/kg Q2W. All were treated for 12 months or until progression. The primary endpoint was safety. Secondary endpoints were efficacy and pharmacokinetics. Exploratory endpoints included pharmacodynamics. RESULTS Fifty-eight patients were treated. Median age was 62.5 years and 81% were male. Most had kidney cancer (n = 36) or melanoma (n = 9). There were no dose-limiting toxicities. Treatment-related adverse events occurred in 83% and were grade ≥ 3 in 21%. Objective clinical responses occurred in 8/58 patients (14%): 5 with kidney cancer, including 1 with a complete response, and 3 with melanoma. The relationship between dose and serum levels was predictable and linear, with apparent receptor saturation at 10 mg/kg Q2W and all 20 mg/kg cohorts. CONCLUSIONS MEDI0680 induced peripheral T-cell proliferation and increased plasma IFNγ and associated chemokines regardless of clinical response. CD8+ T-cell tumor infiltration and tumoral gene expression of IFNG, CD8A, CXCL9, and granzyme K (GZMK) were also increased following MEDI0680 administration. TRIAL REGISTRATION NCT02013804 ; date of registration December 12, 2013.
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Meric-Bernstam F, Boni V, Spira AI, Sanborn RE, Arkenau HT, Sweis R, Burris H, Li R, Yalamanchili S, Will M, Liu JF, Harding JJ, Gautam P. Abstract LB-185: Preliminary results of PROCLAIM-CX-2009, a first-in-human, dose-finding study of the Probody drug conjugate CX-2009 in patients with advanced solid tumors. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-lb-185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: CX-2009 is a Probody™ drug conjugate (PDC) directed against CD166 (ubiquitously expressed in normal epithelium and overexpressed in carcinomas) that incorporates DM4, a potent but toxic microtubulin inhibitor (MTI). PDCs are preferentially activated by tumor microenvironment proteases with minimal binding in the inactive/masked state in nonmalignant tissue. Preclinically, CX-2009 led to significant tumor growth inhibition or regression in multiple solid tumor types. CX-2009 (masked) had extended exposure compared with the corresponding CD166-targeting ADC (unmasked), consistent with significantly reduced target-mediated drug disposition. These results indicate CX-2009 is efficiently activated in the tumor with low nonmalignant tissue engagement. Preliminary safety and antitumor activity from a first-in-human investigational dose escalation study are reported.
Methods: In the dose escalation of this ongoing phase 1/2 study (NCT03149549), 37 patients (pts) with advanced solid tumors received CX-2009 0.25-10 mg/kg IV every 21 days. 7 tumor types were enrolled in this study because of their high CD166 expression and MTI sensitivity: breast carcinoma (BC), castration-resistant prostate carcinoma, non-small cell lung carcinoma (NSCLC), epithelial ovarian carcinoma (EOC), endometrial carcinoma, head and neck squamous cell carcinoma, and cholangiocarcinoma. The study was initiated with accelerated dose titration in 1 single-subject cohort (0.25 mg/kg), followed by a standard 3+3 design up to 10 mg/kg to determine MTD.
Results: As of 30 Nov 2018, 37 pts were enrolled with advanced solid tumors (27% BC 27% EOC, 46% other) and a median of 6 (range 1-15) prior therapies. High CD166 by IHC was found in 14/24 tumors; median number of doses was 2 (range, 1-11), 19% of pts remain on treatment. One dose-limiting toxicity (grade 3 vomiting, 8 mg/kg) was observed. MTD was not reached at 10 mg/kg. Grade 1-2 treatment-related adverse events (TRAEs) occurred in 57% of pts and the most common (>10%) were fatigue, anorexia (16% each), infusion-related reaction, diarrhea, and nausea (14% each). Grade 3-4 TRAEs were seen in 22% of pts (most frequently keratitis: 4 pts; 8, 9, and 10 mg/kg groups) and were managed and reversed with topical steroids. Of 25 pts evaluable for radiographic response, 3 had unconfirmed partial responses (BC, 8 and 9 mg/kg; EOC, 9 mg/kg; 2 CD166 high, 1 unknown; greatest tumoral shrinkage 85%) and 1 had durable stable disease for 24 weeks (NSCLC, 6 mg/kg, CD166 low).
Conclusions: CX-2009 was tolerable at dose levels up to 10 mg/kg. Preliminary antitumor activity is observed at dose levels starting at 6 mg/kg and above, warranting further investigation. The study is ongoing, enrolling translational cohorts. PK data and data on Probody integrity in the periphery will be presented. Probody is a trademark of CytomX Therapeutics, Inc.
Source of Funding: CytomX Therapeutics, Inc.
Citation Format: Funda Meric-Bernstam, Valentina Boni, Alexander I. Spira, Rachel E. Sanborn, H-Tobias Arkenau, Randy Sweis, Howard Burris, Rachel Li, Sreeni Yalamanchili, Matthias Will, Joyce F. Liu, James J. Harding, Pratigya Gautam. Preliminary results of PROCLAIM-CX-2009, a first-in-human, dose-finding study of the Probody drug conjugate CX-2009 in patients with advanced solid tumors [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr LB-185.
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Jung KH, LoRusso P, Burris H, Gordon M, Bang YJ, Hellmann MD, Cervantes A, Ochoa de Olza M, Marabelle A, Hodi FS, Ahn MJ, Emens LA, Barlesi F, Hamid O, Calvo E, McDermott D, Soliman H, Rhee I, Lin R, Pourmohamad T, Suchomel J, Tsuhako A, Morrissey K, Mahrus S, Morley R, Pirzkall A, Davis SL. Phase I Study of the Indoleamine 2,3-Dioxygenase 1 (IDO1) Inhibitor Navoximod (GDC-0919) Administered with PD-L1 Inhibitor (Atezolizumab) in Advanced Solid Tumors. Clin Cancer Res 2019; 25:3220-3228. [PMID: 30770348 PMCID: PMC7980952 DOI: 10.1158/1078-0432.ccr-18-2740] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 12/06/2018] [Accepted: 02/12/2019] [Indexed: 01/31/2023]
Abstract
PURPOSE IDO1 induces immune suppression in T cells through l-tryptophan (Trp) depletion and kynurenine (Kyn) accumulation in the local tumor microenvironment, suppressing effector T cells and hyperactivating regulatory T cells (Treg). Navoximod is an investigational small-molecule inhibitor of IDO1. This phase I study evaluated safety, tolerability, pharmacokinetics, and pharmacodynamics of navoximod in combination with atezolizumab, a PD-L1 inhibitor, in patients with advanced cancer. PATIENTS AND METHODS The study consisted of a 3+3 dose-escalation stage (n = 66) and a tumor-specific expansion stage (n = 92). Navoximod was given orally every 12 hours continuously for 21 consecutive days of each cycle with the exception of cycle 1, where navoximod administration started on day -1 to characterize pharmacokinetics. Atezolizumab was administered by intravenous infusion 1,200 mg every 3 weeks on day 1 of each cycle. RESULTS Patients (n = 157) received navoximod at 6 dose levels (50-1,000 mg) in combination with atezolizumab. The maximum administered dose was 1,000 mg twice daily; the MTD was not reached. Navoximod demonstrated a linear pharmacokinetic profile, and plasma Kyn generally decreased with increasing doses of navoximod. The most common treatment-related AEs were fatigue (22%), rash (22%), and chromaturia (20%). Activity was observed at all dose levels in various tumor types (melanoma, pancreatic, prostate, ovarian, head and neck squamous cell carcinoma, cervical, neural sheath, non-small cell lung cancer, triple-negative breast cancer, renal cell carcinoma, urothelial bladder cancer): 6 (9%) dose-escalation patients achieved partial response, and 10 (11%) expansion patients achieved partial response or complete response. CONCLUSIONS The combination of navoximod and atezolizumab demonstrated acceptable safety, tolerability, and pharmacokinetics for patients with advanced cancer. Although activity was observed, there was no clear evidence of benefit from adding navoximod to atezolizumab.
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Meric-Bernstam F, Hurwitz H, Raghav KPS, McWilliams RR, Fakih M, VanderWalde A, Swanton C, Kurzrock R, Burris H, Sweeney C, Bose R, Spigel DR, Beattie MS, Blotner S, Stone A, Schulze K, Cuchelkar V, Hainsworth J. Pertuzumab plus trastuzumab for HER2-amplified metastatic colorectal cancer (MyPathway): an updated report from a multicentre, open-label, phase 2a, multiple basket study. Lancet Oncol 2019; 20:518-530. [PMID: 30857956 PMCID: PMC6781620 DOI: 10.1016/s1470-2045(18)30904-5] [Citation(s) in RCA: 334] [Impact Index Per Article: 66.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/21/2018] [Accepted: 11/22/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Therapies targeting HER2 have improved clinical outcomes in HER2-positive breast and gastric cancers, and are emerging as potential treatments for HER2-positive metastatic colorectal cancer. MyPathway evaluates the activity of targeted therapies in non-indicated tumour types with potentially predictive molecular alterations. We aimed to assess the activity of pertuzumab and trastuzumab in patients with HER2-amplified metastatic colorectal cancer. METHODS MyPathway is an ongoing, phase 2a, multiple basket study. Patients in this subset analysis were aged 18 years or older and had treatment-refractory, histologically confirmed HER2-amplified metastatic colorectal cancer with measurable or evaluable disease and an Eastern Cooperative Oncology Group performance status score of 2 or less, enrolled from 25 hospitals or clinics in 16 states of the USA. Patients received pertuzumab (840 mg loading dose, then 420 mg every 3 weeks, intravenously) and trastuzumab (8 mg/kg loading dose, then 6 mg/kg every 3 weeks, intravenously). The primary endpoint was the proportion of patients who achieved an objective response based on investigator-reported tumour responses. Analyses were done per protocol. This ongoing trial is registered with ClinicalTrials.gov, number NCT02091141. FINDINGS Between Oct 20, 2014, and June 22, 2017, 57 patients with HER2-amplified metastatic colorectal cancer were enrolled in the MyPathway study and deemed eligible for inclusionin this cohort analysis. Among these 57 evaluable patients, as of Aug 1, 2017, one (2%) patient had a complete response and 17 (30%) had partial responses; thus overall 18 of 57 patients achieved an objective response (32%, 95% CI 20-45). The most common treatment-emergent adverse events were diarrhoea (19 [33%] of 57 patients), fatigue (18 [32%] patients), and nausea (17 [30%] patients). Grade 3-4 treatment-emergent adverse events were recorded in 21 (37%) of 57 patients, most commonly hypokalaemia and abdominal pain (each three [5%] patients). Serious treatment-emergent adverse events were reported in ten (18%) patients and two (4%) of these adverse events (ie, chills and infusion-related reaction) were considered treatment related. There were no treatment-related deaths. INTERPRETATION Dual HER2-targeted therapy with pertuzumab plus trastuzumab is well tolerated and could represent a therapeutic opportunity for patients with heavily pretreated, HER2-amplified metastatic colorectal cancer. FUNDING F Hoffmann-La Roche/Genentech.
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Im SA, Bang YJ, Oh DY, Giaccone G, Bauer T, Nordstrom J, Li H, Moore P, Hong S, Baughman J, Rock E, Burris H. Abstract P6-18-11: Long-term responders to single-agent margetuximab, an Fc-modified anti-HER2 monoclonal antibody, in metastatic HER2+ breast cancer patients with prior anti-HER2 therapy. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-18-11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Margetuximab is an Fc-optimized anti-HER2 antibody that recognizes the same epitope as trastuzumab. Margetuximab has increased affinity for the activating CD16A Fc-receptor on NK cells and macrophages as well as decreased affinity for the inhibitory CD32B receptor compared to trastuzumab. In a Phase 1 study (NCT01148849) of 66 patients with relapsed or metastatic HER2+ cancer across multiple indications, margetuximab was well tolerated at all doses. Among 60 response-evaluable patients, confirmed partial response (PR) and stable disease (SD) were seen in 7 (12%) and 30 (50%) patients, respectively. Tumor reductions occurred in 18/23 (78%) evaluable breast cancer patients. Ex-vivo analyses of patient peripheral blood mononuclear cell samples confirmed margetuximab's ability to enhance antibody dependent cell-mediated cytotoxicity over that from trastuzumab. We report on 3 breast cancer patients with prior anti-HER2 therapy failure with durable (≥ 3.5 years) SD (1) or PR (2).
Methods
Enrolled patients had histologically/cytologically-confirmed carcinoma with documented HER2 overexpression by immunohistochemistry (2+ or 3+) and disease progression during/following last therapy. Eligibility included life expectancy ≥3 months; performance status ≤1; measurable disease by Response Criteria for Solid Tumors 1.1; adequate bone marrow, renal, hepatic function; and left ventricular ejection fraction ≥50%. Margetuximab was given by intravenous infusion at 0.1 – 6.0 mg/kg for 3 of every 4 weeks or once every 3 weeks (10 – 18 mg/kg).
Results
Three of 17 HER2 3+ metastatic breast cancer patients received long-term margetuximab. Patient 35 had 3 prior regimens (adjuvant doxorubicin+cyclophosphamide followed by docetaxol+trastuzumab; gemcitabine+vinorelbine; lapatinib+capecitabine) and received margetuximab at 10 mg/kg q3wk, 88 cycles to date, with PR achieved Cycle 1 Day 43, maintained 4.4 years. Patient 44 had 3 prior regimens for metastatic disease (docetaxel+trastuzumab+pertuzumab; doxorubicin+cyclophosphamide; lapatinib+capecitabine) and received margetuximab at 15 mg/kg q3wk, 79 cycles to date with SD for 4.3 years. Patient 50 had 4 prior regimens for recurrent/metastatic disease (tamoxifen; anastrozole; capecitabine+trastuzumab; lapatinib+capecitabine) and received margetuximab dose of 18 mg/kg q3wk with PR achieved Cycle 1 Day 43, maintained 3.5 years. Progression was noted at Cycle 57, and margetuximab continues at 63 cycles to date. No cardiac toxicities were found during long-term follow-up for these 3 patients and there were no treatment-related adverse events ≥Grade 3.
Conclusions
Margetuximab is well-tolerated without cardiac toxicities in long-term responders, with single-agent activity including durable responses in heavily pre-treated metastatic breast cancer. A Phase 3, randomized, multi-center clinical trial (SOPHIA; NCT02492711) is enrolling patients with metastatic breast cancer, comparing margetuximab plus chemotherapy to trastuzumab plus chemotherapy in patients who have received 1 to 3 lines of therapy for advanced disease.
Citation Format: Im S-A, Bang Y-J, Oh D-Y, Giaccone G, Bauer T, Nordstrom J, Li H, Moore P, Hong S, Baughman J, Rock E, Burris H. Long-term responders to single-agent margetuximab, an Fc-modified anti-HER2 monoclonal antibody, in metastatic HER2+ breast cancer patients with prior anti-HER2 therapy [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-18-11.
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McKenzie AJ, H Dilks H, Jones SF, Burris H. Should next-generation sequencing tests be performed on all cancer patients? Expert Rev Mol Diagn 2019; 19:89-93. [PMID: 30618301 DOI: 10.1080/14737159.2019.1564043] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Mellinghoff I, Penas-Prado M, Peters K, Cloughesy T, Burris H, Maher E, Janku F, Cote G, De La Fuente M, Clarke J, Steelman L, Le K, Xu H, Sonderfan A, Hummel D, Schoenfeld S, Yen K, Pandya S, Wen P. ACTR-31. PHASE 1 STUDY OF AG-881, AN INHIBITOR OF MUTANT IDH1 AND IDH2: RESULTS FROM THE RECURRENT/PROGRESSIVE GLIOMA POPULATION. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy148.064] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Johnson M, Patel M, Ulahannan S, Hansen A, George B, Chu QC, Elgadi M, Ge M, Duffy C, Graeser R, Khedkar S, Jones S, Burris H. Phase I study of BI 754111 (anti-LAG-3) plus BI 754091(anti-PD-1) in patients (pts) with advanced solid cancers, followed by expansion in pts with microsatellite stable metastatic colorectal cancer (mCRC), anti-PD-(L)1-pretreated non-small cell lung cancer (NSCLC) and other solid tumors. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy288.114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sobrero A, Lenz HJ, Eng C, Scheithauer W, Middleton G, Chen W, Esser R, Nippgen J, Burris H. Retrospective RAS analysis of the EPIC trial: Cetuximab plus irinotecan vs irinotecan in patients (pts) with second-line metastatic colorectal cancer (mCRC). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Hainsworth JD, Meric-Bernstam F, Swanton C, Hurwitz H, Spigel DR, Sweeney C, Burris H, Bose R, Yoo B, Stein A, Beattie M, Kurzrock R. Reply to J.J. Tao et al. J Clin Oncol 2018; 36:2451. [PMID: 29856693 DOI: 10.1200/jco.2018.78.6392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Siu LL, Burris H, Le DT, Hollebecque A, Steeghs N, Delord JP, Hilton J, Barnhart B, Sega E, Sanghavi K, Klippel A, Hedvat C, Hilt E, Donovan M, Gipson A, Basciano P, Postelnek J, Zhao Y, Perez RP, Carvajal RD. Abstract CT180: Preliminary phase 1 profile of BMS-986179, an anti-CD73 antibody, in combination with nivolumab in patients with advanced solid tumors. Clin Trials 2018. [DOI: 10.1158/1538-7445.am2018-ct180] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Okeley NM, Heiser RA, Zeng W, Hengel SM, Wall J, Haughney PC, Yap TA, Robert F, Sanborn RE, Burris H, Chow LQ, Do KT, Gutierrez M, Reckamp K, Weise A, Camidge DR, Strickler J, Steuer C, Wang Z, O'Meara MM, Alley SC, Gardai SJ. Abstract 5551: SGN-2FF: A small-molecule inhibitor of fucosylation modulates immune cell activity in preclinical models and demonstrates pharmacodynamic activity in early phase 1 analysis. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-5551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
SGN-2FF, an orally bioavailable small molecule inhibitor of glycoprotein fucosylation, demonstrates encouraging preclinical antitumor activity in mouse models with suggested multiple mechanisms of action, including direct and indirect effects on immune cells, tumor cells, and the tumor microenvironment. The effects of SGN-2FF were evaluated on tumors implanted in multiple strains of mice to determine how differences in the immune repertoire affect the antitumor activity. SGN-2FF treatment of nude mice, which maintain functional B cells and antibody production, resulted in a delay in LS174T tumor growth compared with untreated mice, while LS174T tumors in SCID mice, which lack B cells, were unaffected by SGN-2FF. These data suggest that activity of SGN-2FF in nude mice may be dependent on residual B cells and circulating antibodies. The antitumor effect of SGN-2FF in syngeneic mouse models with intact immune systems also appears to be dependent on T cell activity. Transfer of T cells isolated from SGN-2FF-treated tumor-bearing mice to naïve tumor-bearing mice was sufficient to delay tumor growth. T cells isolated from untreated tumor-bearing mice did not have the same effect. These results demonstrate that afucosylated immune cells play a key role in the preclinical activity of SGN-2FF.
Various preclinical assays were used to detect SGN-2FF-mediated changes in cellular and IgG fucosylation important for biological activity. These assays are being applied in evaluating patient samples in the ongoing phase 1, multicenter, dose-escalation study investigating the safety, tolerability, PK, and biomarkers of antitumor activity of SGN-2FF administered orally to adult patients with advanced solid tumors (NCT# 02952989). Changes in peripheral IgG fucosylation, absolute neutrophil count, and immune cell surface fucosylation were identified as initial biomarkers for proof of pharmacodynamic activity. Preliminary data following daily doses of SGN-2FF demonstrate that cell surface fucosylation on granulocytes was significantly reduced and neutrophil count was significantly increased in 6 of 7 treated subjects; additionally, IgG fucosylation was significantly decreased in 7 of 7 subjects. PK have been characterized, and preliminary results are within the expected range as predicted from preclinical studies. Following daily administration of SGN-2FF, accumulation of the active metabolite, GDP-2FF, was observed intracellularly, while no accumulation of SGN-2FF was observed in plasma. Collectively, these data demonstrate robust biological effects of SGN-2FF. The pharmacodynamic biomarkers and PK analysis are informing next steps in identifying an optimal dose and dosing schedule for SGN-2FF.
Citation Format: Nicole M. Okeley, Ryan A. Heiser, Weiping Zeng, Shawna Mae Hengel, Jason Wall, Peter C. Haughney, Timothy Anthony Yap, Francisco Robert, Rachel E. Sanborn, Howard Burris, Laura Q. Chow, Khanh T. Do, Martin Gutierrez, Karen Reckamp, Amy Weise, D Ross Camidge, John Strickler, Conor Steuer, Zejing Wang, Megan M. O'Meara, Stephen C. Alley, Shyra J. Gardai. SGN-2FF: A small-molecule inhibitor of fucosylation modulates immune cell activity in preclinical models and demonstrates pharmacodynamic activity in early phase 1 analysis [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 5551.
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Modi S, Pusztai L, Forero A, Mita M, Miller KD, Weise A, Krop I, Burris H, Kalinsky K, Tsai M, Liu MC, Hurvitz SA, Wilks S, Ademuyiwa F, Diab S, Han HS, Kato G, Nanda R, O'Shaughnessy J, Kostic A, Li M, Specht J. Abstract PD3-14: Phase 1 study of the antibody-drug conjugate SGN-LIV1A in patients with heavily pretreated triple-negative metastatic breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-pd3-14] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
LIV-1, a transmembrane protein and downstream target of STAT3, is highly expressed in breast cancer cells. It is associated with lymph node involvement and metastatic progression. SGN-LIV1A is an anti-LIV-1 antibody conjugated via a protease-cleavable linker to monomethyl auristatin E (MMAE). Upon binding to cell-surface LIV-1, SGN-LIV1A is internalized and releases MMAE, which disrupts microtubulin and induces apoptosis.
Methods
This ongoing, phase 1 study evaluates safety, tolerability, pharmacokinetics, and antitumor activity of SGN-LIV1A (q3wks IV) in women with LIV-1-positive, unresectable, locally advanced or metastatic breast cancer (LA/MBC) (NCT01969643). Patients (pts) with measurable disease and ≥2 prior cytotoxic regimens for LA/MBC are eligible. Pts with ≥ Grade 2 neuropathy are excluded. Response is assessed per RECIST v1.1; pts with stable disease (SD) or better can continue treatment until disease progression or intolerable toxicity. At completion of dose escalation in hormone receptor-positive/HER2-negative (HR+/HER2–) and triple-negative (TN) pts, expansion cohorts were opened to further evaluate safety and antitumor activity of monotherapy in TN pts. Tumor biopsies are evaluated for LIV-1 expression.
Results
To date, 69 pts (18 HR+/HER2–, 51 TN) have received a median of 3 cycles (range, 1–12) of SGN-LIV1A at doses of 0.5–2.8 mg/kg. Median age was 56 yrs. Pts had a median of 3 prior cytotoxic regimens for LA/MBC; 58 had visceral disease and 37 had bone metastases. No dose-limiting toxicities (DLTs) occurred in 19 DLT-evaluable pts; maximum tolerated dose was not exceeded at 2.8 mg/kg. Expansion cohorts of TN pts were opened at 2.0 and 2.5 mg/kg. Treatment-emergent adverse events (AEs) reported in ≥25% of pts were fatigue (59%), nausea (51%), peripheral neuropathy (44%), alopecia (36%), decreased appetite (33%), constipation (30%), abdominal pain, diarrhea, and neutropenia (25% each). Most AEs were Grade 1/2; AEs ≥ Grade 3 included neutropenia (25%) and anemia (15%). Febrile neutropenia occurred in 2 pts whose total dose exceeded 200 mg per cycle, including 1 treatment-related death due to sepsis. No other treatment-related deaths occurred on-study. Seven pts discontinued treatment due to AEs. In dose escalation, activity was observed in 17 efficacy evaluable (EE) HR+/HER2- pts, with a disease control rate (DCR= CR+PR+SD) of 59% (10 SD), including 1 pt with SD ≥24 wks. Among the 44 EE TN pts (dose escalation plus expansion cohorts), the objective response rate (ORR) was 32% (14 PR) with a confirmed PR rate of 21%, DCR was 64% (14 PR, 14 SD), and clinical benefit rate (CBR=CR+PR+SD ≥24 wks) was 36% (16 pts). For TN pts, median PFS was 11.3 wks (95% CI: 6.1, 17.1); 10 pts remain on treatment.
Of 631 MBC tumor samples of all clinical subtypes evaluated for LIV-1, 91% were positive; 75% had moderate-to-high expression (H-score ≥100).
Conclusions
LIV-1 is expressed in almost all MBC tumors. SGN-LIV1A monotherapy was generally well tolerated and showed encouraging antitumor activity in heavily pretreated TN MBC, with a PR rate of 32%, confirmed PR rate of 21%, and CBR (≥24 wks) of 36%. Response duration data continue to evolve. Enrollment continues in the TN monotherapy expansion cohort.
Citation Format: Modi S, Pusztai L, Forero A, Mita M, Miller KD, Weise A, Krop I, Burris III H, Kalinsky K, Tsai M, Liu MC, Hurvitz SA, Wilks S, Ademuyiwa F, Diab S, Han HS, Kato G, Nanda R, O'Shaughnessy J, Kostic A, Li M, Specht J. Phase 1 study of the antibody-drug conjugate SGN-LIV1A in patients with heavily pretreated triple-negative metastatic breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr PD3-14.
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Hainsworth JD, Meric-Bernstam F, Swanton C, Hurwitz H, Spigel DR, Sweeney C, Burris H, Bose R, Yoo B, Stein A, Beattie M, Kurzrock R. Targeted Therapy for Advanced Solid Tumors on the Basis of Molecular Profiles: Results From MyPathway, an Open-Label, Phase IIa Multiple Basket Study. J Clin Oncol 2018; 36:536-542. [PMID: 29320312 DOI: 10.1200/jco.2017.75.3780] [Citation(s) in RCA: 330] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose Detection of specific molecular alterations in tumors guides the selection of effective targeted treatment of patients with several types of cancer. These molecular alterations may occur in other tumor types for which the efficacy of targeted therapy remains unclear. The MyPathway study evaluates the efficacy and safety of selected targeted therapies in tumor types that harbor relevant genetic alterations but are outside of current labeling for these treatments. Methods MyPathway ( ClinicalTrials.gov identifier: NCT02091141) is a multicenter, nonrandomized, phase IIa multiple basket study. Patients with advanced refractory solid tumors harboring molecular alterations in human epidermal growth factor receptor-2, epidermal growth factor receptor, v-raf murine sarcoma viral oncogene homolog B1, or the Hedgehog pathway are treated with pertuzumab plus trastuzumab, erlotinib, vemurafenib, or vismodegib, respectively. The primary end point is investigator-assessed objective response rate within each tumor-pathway cohort. Results Between April 1, 2014 and November 1, 2016, 251 patients with 35 different tumor types received study treatment. The efficacy population contains 230 treated patients who were evaluated for response or discontinued treatment before evaluation. Fifty-two patients (23%) with 14 different tumor types had objective responses (complete, n = 4; partial, n = 48). Tumor-pathway cohorts with notable objective response rates included human epidermal growth factor receptor-2-amplified/overexpressing colorectal (38% [14 of 37]; 95% CI, 23% to 55%) and v-raf murine sarcoma viral oncogene homolog B1 V600-mutated non-small-cell lung cancer (43% [six of 14]; 95% CI, 18% to 71%). Conclusion The four currently approved targeted therapy regimens in the MyPathway study produced meaningful responses when administered without chemotherapy in several refractory solid tumor types not currently labeled for these agents.
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Kelley RK, Verslype C, Cohn AL, Yang TS, Su WC, Burris H, Braiteh F, Vogelzang N, Spira A, Foster P, Lee Y, Van Cutsem E. Cabozantinib in hepatocellular carcinoma: results of a phase 2 placebo-controlled randomized discontinuation study. Ann Oncol 2017; 28:528-534. [PMID: 28426123 PMCID: PMC5391701 DOI: 10.1093/annonc/mdw651] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background Cabozantinib, an orally bioavailable inhibitor of tyrosine kinases including MET, AXL, and VEGF receptors, was assessed in patients with hepatocellular carcinoma (HCC) as part of a phase 2 randomized discontinuation trial with nine tumor-type cohorts. Patients and methods Eligible patients had Child-Pugh A liver function and ≤1 prior systemic anticancer regimen, completed ≥4 weeks before study entry. The cabozantinib starting dose was 100 mg daily. After an initial 12-week cabozantinib treatment period, patients with stable disease (SD) per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.0 were randomized to cabozantinib or placebo. The primary endpoint of the lead-in stage was objective response rate (ORR) at week 12, and the primary endpoint of the randomized stage was progression-free survival (PFS). Results Among the 41 HCC patients enrolled, the week 12 ORR was 5%, with 2 patients achieving a confirmed partial response (PR). The week 12 disease control rate (PR or SD) was 66% (Asian subgroup: 73%). Of patients with ≥1 post-baseline scan, 78% had tumor regression, with no apparent relationship to prior sorafenib therapy. Alpha-fetoprotein (AFP) response (>50% reduction from baseline) occurred in 9 of the 26 (35%) patients with elevated baseline AFP and ≥1 post-baseline measurement. Twenty-two patients with SD at week 12 were randomized. Median PFS after randomization was 2.5 months with cabozantinib and 1.4 months with placebo, although this difference was not statistically significant. Median PFS and overall survival from Day 1 in all patients were 5.2 and 11.5 months, respectively. The most common grade 3/4 adverse events, regardless of attribution, were diarrhea (20%), hand-foot syndrome (15%), and thrombocytopenia (15%). Dose reductions were utilized in 59% of patients. Conclusions Cabozantinib has clinical activity in HCC patients, including objective tumor responses, disease stabilization, and reductions in AFP. Adverse events were managed with dose reductions. Trial registration number NCT00940225.
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Chung JH, Pavlick D, Hartmaier R, Schrock AB, Young L, Forcier B, Ye P, Levin MK, Goldberg M, Burris H, Gay LM, Hoffman AD, Stephens PJ, Frampton GM, Lipson DM, Nguyen DM, Ganesan S, Park BH, Vahdat LT, Leyland-Jones B, Mughal TI, Pusztai L, O'Shaughnessy J, Miller VA, Ross JS, Ali SM. Hybrid capture-based genomic profiling of circulating tumor DNA from patients with estrogen receptor-positive metastatic breast cancer. Ann Oncol 2017; 28:2866-2873. [PMID: 28945887 PMCID: PMC5834148 DOI: 10.1093/annonc/mdx490] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Genomic changes that occur in breast cancer during the course of disease have been informed by sequencing of primary and metastatic tumor tissue. For patients with relapsed and metastatic disease, evolution of the breast cancer genome highlights the importance of using a recent sample for genomic profiling to guide clinical decision-making. Obtaining a metastatic tissue biopsy can be challenging, and analysis of circulating tumor DNA (ctDNA) from blood may provide a minimally invasive alternative. PATIENTS AND METHODS Hybrid capture-based genomic profiling was carried out on ctDNA from 254 female patients with estrogen receptor-positive breast cancer. Peripheral blood samples were submitted by clinicians in the course of routine clinical care between May 2016 and March 2017. Sequencing of 62 genes was carried out to a median unique coverage depth of 7503×. Genomic alterations (GAs) in ctDNA were evaluated and compared with matched tissue samples and genomic datasets of tissue from breast cancer. RESULTS At least 1 GA was reported in 78% of samples. Frequently altered genes were TP53 (38%), ESR1 (31%) and PIK3CA (31%). Temporally matched ctDNA and tissue samples were available for 14 patients; 89% of mutations detected in tissue were also detected in ctDNA. Diverse ESR1 GAs including mutation, rearrangement and amplification, were observed. Multiple concurrent ESR1 GAs were observed in 40% of ESR1-altered cases, suggesting polyclonal origin; ESR1 compound mutations were also observed in two cases. ESR1-altered cases harbored co-occurring GAs in PIK3CA (35%), FGFR1 (16%), ERBB2 (8%), BRCA1/2 (5%), and AKT1 (4%). CONCLUSIONS GAs relevant to relapsed/metastatic breast cancer management were identified, including diverse ESR1 GAs. Genomic profiling of ctDNA demonstrated sensitive detection of mutations found in tissue. Detection of amplifications was associated with ctDNA fraction. Genomic profiling of ctDNA may provide a complementary and possibly alternative approach to tissue-based genomic testing for patients with estrogen receptor-positive metastatic breast cancer.
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Moore K, Cadoo K, Chambers S, Ghamande S, Konecny G, Oza A, Chen LM, Konstantinopoulos P, Lea J, Spitz D, Uyar D, Mugundu G, Laing N, Strickland D, Jones S, Burris H, Spigel D, Hamilton E. A multicentre phase II study of AZD1775 plus chemotherapy in patients with platinum-resistant epithelial ovarian, fallopian tube, or primary peritoneal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx372.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Garcia-Corbacho J, Spira A, Boni V, Feliu J, Middleton M, Burris H, Yang Weaver A, Will M, Harding J, Meric-Bernstam F, Heinemann V. PROCLAIM-CX-2009: A first-in-human trial to evaluate CX-2009 in adults with metastatic or locally advanced unresectable solid tumors. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx367.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Falchook G, Patel M, Infante J, Arkenau HT, Dean E, Brenner A, Borazanci E, Lopez J, Moore K, Schmid P, Frankel A, Jones S, McCulloch W, Kemble G, Burris H. Abstract CT153: First in human study of the first-in-class fatty acid synthase (FASN) inhibitor TVB-2640. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-ct153] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction
FASN inhibition causes selective disruption of palmitate biosynthesis that, in tumor cells, leads to apoptosis. TVB-2640 is an oral, first-in-class, small molecule reversible inhibitor of FASN that demonstrated in vivo antitumor effects. We previously reported the results of dose escalation and now present evidence of activity in patients (pts) treated in the dose expansion cohorts.
Methods
This fully enrolled multicenter phase I trial included pts with advanced solid tumors. TVB-2640 was given PO once daily at the MTD (100 mg/m2) as monotherapy (mono) or in combination (combo) with weekly IV paclitaxel (80 mg/m2).
Results
The most common related AEs observed in both groups (mono, N=44, combo, N=43) included alopecia (41%), palmar-plantar erythrodysesthesia (PPE) (47%), and decreased appetite (13%). Additional common AEs in the mono group included dry skin (19%) and in the combo group included nausea (28%). Gr3 related AEs included decreased appetite (8%) and PPE (9%); all other related AEs were ≤ Gr2. All related AEs were reversible on dose interruption. No enhancement of paclitaxel toxicity was observed with TVB-2640. Pneumonitis in the combo arm was observed uncommonly (9%), but the contribution of TVB-2640 to this effect is uncertain.
Pharmacokinetic analyses showed that TVB-2640 had a similar half-life whether given alone or in combo with paclitaxel. Clearance rates were similar on days 1 and 8 (or day 15 for combo). Multiple pharmacodynamic markers demonstrated potent inhibition of FASN and lipogenesis in pts.
With respect to clinical activity, overall, 5 confirmed RECIST partial responses (cPR) were seen. Among pts with NSCLC, 18 of 31 were KRASmut, and KRASmut pts achieved longer progression-free survival on TVB-2640 monotherapy, with 60% of KRASmut pts vs. 0% of KRASwt pts on study > 12 wks. Among 18 KRASmut pts, 11 achieved prolonged SD (≥16 wks), including 6 mono pts (SD=19-46 wks) and 5 combo pts (SD=23-54 wks), whereas no KRASwt pts achieved prolonged SD. One NSCLC combo pt achieved cPR at wk 12 and remained on study for 39 wks. Of 14 breast cancer pts, 3 pts achieved cPR and 8 pts achieved prolonged SD (≥16 wks), despite extensive previous treatment, including taxane resistance. One ongoing breast cancer pt with SD, entering her 78th wk of treatment, discontinued paclitaxel at wk 35 and remains on monotherapy . One pt with peritoneal carcinoma (combo) achieved cPR and a 58% decrease in CA125. Reductions in CA125 were seen in 5 out of 12 ovarian cancer pts, who were typically heavily pretreated and taxane-resistant.
Summary
TVB-2640 demonstrated antitumor activity, including objective responses when combined with weekly paclitaxel, as well as prolonged SD as monotherapy or in combination with paclitaxel. Further studies are planned to evaluate the efficacy of TVB-2640 in NSCLC and breast cancer pts.
Citation Format: Gerald Falchook, Manish Patel, Jeffrey Infante, Hendrik-Tobias Arkenau, Emma Dean, Andrew Brenner, Erkut Borazanci, Juanita Lopez, Kathleen Moore, Peter Schmid, Arthur Frankel, Suzanne Jones, William McCulloch, George Kemble, Howard Burris. First in human study of the first-in-class fatty acid synthase (FASN) inhibitor TVB-2640 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr CT153. doi:10.1158/1538-7445.AM2017-CT153
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Ashton S, Floch N, Taylor P, Howes C, Ferguson D, Ling M, Hattersley M, Wen S, Maratea K, Hughes A, Redmond S, Brugger W, Smith S, MacDonald A, Parry K, Burris H, Song YH, Nolan J, Pease E, Barry ST. Abstract 311: Development of AZD2811, an aurora kinase B inhibitor, incorporated into an AccurinTM nanoparticle for use in haematological and solid cancers. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
A nanoparticle formulation of AZD2811, a selective aurora kinase B inhibitor, is currently under clinical development for the treatment of both haematological and solid tumour disease. AZD2811 is the active derivative of the prodrug Barasertib (AZD1152) which gave promising clinical activity in elderly AML patients delivered as a 7-day infusion (Kantarjian et al, Cancer, 119, 2611-2619, 2013). To address the limitations associated with the clinical utility of Barasertib and other cell cycle inhibitors in the clinic, AZD2811 has been incorporated into an AccurinTM nanoparticle using a pamoic acid ion pairing approach to optimise drug release rate (Song et al, Journal of Controlled Release, 229, 106-119, 2016), improve the drug exposure to tumour and reduce the duration of administration. A proof of principle formulation of AZD2811 as an AccurinTM nanoparticle established the principle that anti-tumour activity and improved therapeutic index could be achieved (Ashton et al, Science Translational Medicine, 325, 1-10, 2016). The clinical nanoparticle formulation of AZD2811 has been optimised for drug loading and release rate. In pre-clinical models, the clinical formulation can be used flexibly to optimise drug delivery for use in both haematological disease such as AML, or in solid tumour settings. Anti-tumour activity in solid tumours can be achieved at doses where bone marrow toxicity is reduced compared to Barasertib. In sensitive xenograft and PDX solid tumour models greater than 90% tumour regression is observed after a total dose of 50mg/kg with no tumour progression for greater than 40 days. In contrast, for AML, increasing the dose intensity by 2-4 fold leads to neutropenia and to complete tumour regression in a range of AML xenograft models for greater than 60 days. These data establish the concept that drug delivery using nanoparticles is able to resolve therapeutic index challenges, and is able to do so across different disease types. AZD2811 is currently in Phase 1 clinical trial (D6130C0000). The current pre-clinical and clinical data with this novel approach to inhibition of the cell cycle will be discussed.
Citation Format: Susan Ashton, Nicholas Floch, Paula Taylor, Colin Howes, Doug Ferguson, Matthew Ling, Maureen Hattersley, Shenghua Wen, Kim Maratea, Adina Hughes, Sean Redmond, Wolfram Brugger, Simon Smith, Alexander MacDonald, Keith Parry, Howard Burris, Young-Ho Song, Jim Nolan, Elizabeth Pease, Simon T. Barry. Development of AZD2811, an aurora kinase B inhibitor, incorporated into an AccurinTM nanoparticle for use in haematological and solid cancers [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 311. doi:10.1158/1538-7445.AM2017-311
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Sears O, Burris H, Tolcher A, Callahan M, Yap T, Kummar S, Falchook G, Pachynski R, Tykodi S, Siewert T, Gibney G, Gainor J, LoRusso P, Lazaro E, Clancy M, Li E, Ding B, Trehu E. Abstract CT035: ICONIC: Phase 1/2 trial of ICOS agonist JTX-2011 alone and in combination with nivolumab (nivo). Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-ct035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: JTX-2011 is an agonist monoclonal antibody that targets ICOS, Inducible CO-Stimulator of T cells. A dual mechanism of action is intended to induce proliferation and stimulation of CD4 T effector cells and selectively deplete intratumoral T regulatory cells. JTX-2011 has shown preclinical antitumor effects both as a single agent and in combination with anti-PD-1 antibodies, with single agent efficacy correlated with % of ICOS expressing T cells in tumors. An ICOS IHC assay was used to identify human tumor types with the highest levels of ICOS expressing T cells.
Methods: ICONIC is a first-in-human Phase 1/2, open label, adaptive clinical study of JTX-2011 alone or in combination with a fixed dose of nivo in subjects with advanced solid tumors. It is designed to assess safety and tolerability, determine the maximal tolerated dose (MTD) and recommended Phase 2 dose, and evaluate preliminary efficacy.
Part A: 3+3 dose escalation of JTX-2011, with Safety/PK/PD expansion cohorts at 2 or more dose levels.
Part B: 3+3 dose escalation of JTX-2011 in combination with nivo, with Safety/PK/PD expansion cohorts at two or more dose levels.
Part C: ≥3 JTX-2011 cohorts in tumors expected to have higher levels of ICOS expressing T cells (non small cell lung cancer [NSCLC], head and neck squamous cell cancer [HNSCC], and others), with ICOS enrichment by IHC.
Part D: ≥ 5 JTX-2011 + nivo cohorts in tumors expected to have higher levels of ICOS expressing T cells NSCLC, HNSCC, triple negative breast cancer, melanoma, gastric, and others), with ICOS enrichment by IHC.
Major Inclusion Criteria
Confirmed cancer that is recurrent, metastatic, or persistent after at least one line of therapy and with no further standard treatment optionsA&B: available and consent to provide archival tumor tissueC&D: available and consent to provide archival tumor tissue, have a lesion that can be biopsied at acceptable clinical risk (as judged by the investigator), and agree to a fresh biopsy
Major Exclusion Criteria
Refused standard therapy Hx of intolerance, hypersensitivity, or treatment discontinuation due to severe immune adverse events on prior immunotherapyImmunodeficiencyActive or prior history of autoimmune diseaseSymptomatic or uncontrolled brain metastases, leptomeningeal disease, or spinal cord compression
Endpoints
Safety and tolerability PK, target engagement, and other PD markers Efficacy by RECIST 1.1 and irR
Overall response rateDuration of ResponseDisease Control RateProgression Free Survival (PFS)Landmark PFSOverall Survival
Trial Progress
Enrollment began in August 2016 and is continuing as planned.
Citation Format: Olivia Sears, Howard Burris, Anthony Tolcher, Margaret Callahan, Timothy Yap, Shivanni Kummar, Gerald Falchook, Russell Pachynski, Scott Tykodi, Tanguy Siewert, Geoffrey Gibney, Justin Gainor, Patricia LoRusso, Emmanuel Lazaro, Myles Clancy, Ella Li, Baoyu Ding, Elizabeth Trehu. ICONIC: Phase 1/2 trial of ICOS agonist JTX-2011 alone and in combination with nivolumab (nivo) [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr CT035. doi:10.1158/1538-7445.AM2017-CT035
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