Safety and Antitumor Activity of Pembrolizumab in Advanced Programmed Death Ligand 1–Positive Endometrial Cancer: Results From the KEYNOTE-028 Study

2017 ◽  
Vol 35 (22) ◽  
pp. 2535-2541 ◽  
Author(s):  
Patrick A. Ott ◽  
Yung-Jue Bang ◽  
Dominique Berton-Rigaud ◽  
Elena Elez ◽  
Michael J. Pishvaian ◽  
...  

Purpose The multicohort phase Ib KEYNOTE-028 (NCT02054806) study was designed to evaluate the safety and efficacy of pembrolizumab, an anti–programmed death 1 monoclonal antibody, in patients with programmed death ligand 1 (PD-L1) –positive advanced solid tumors. The results from the advanced endometrial cancer cohort are reported. Patients and Methods Female patients with locally advanced or metastatic PD-L1–positive endometrial cancer who had experienced progression after standard therapy were eligible. Patients received pembrolizumab 10 mg/kg every 2 weeks for up to 24 months or until progression or unacceptable toxicity. Primary efficacy end point was objective response rate by RECIST (version 1.1). Secondary end points included safety, duration of response (DOR), progression-free survival, and overall survival. The data cutoff was February 17, 2016. Results Of 75 patients screened, 36 (48.0%) had PD-L1–positive tumors, and 24 (32.0%) were enrolled. Fifteen (62.5%) of these 24 patients had received at least two previous lines of therapy for advanced disease. Three patients (13.0%) achieved confirmed partial response (95% CI, 2.8% to 33.6%); the median DOR was not reached. Two patients were still receiving treatment and exhibiting continued response at time of data cutoff. Three additional patients (13.0%) achieved stable disease, with a median duration of 24.6 weeks. One patient who achieved partial response had a polymerase E mutation. Thirteen patients (54.2%) experienced treatment-related adverse events (AEs), with fatigue (20.8%), pruritus (16.7%), pyrexia (12.5%), and decreased appetite (12.5%) occurring in ≥ 10% of patients. Grade 3 treatment-related AEs were reported in four patients. No patient experienced a grade 4 AE, and no patient discontinued treatment because of an AE. Conclusion Pembrolizumab demonstrated a favorable safety profile and durable antitumor activity in a subgroup of patients with heavily pretreated advanced PD-L1–positive endometrial cancer.

2018 ◽  
Vol 36 (28) ◽  
pp. 2836-2844 ◽  
Author(s):  
Yelena Y. Janjigian ◽  
Johanna Bendell ◽  
Emiliano Calvo ◽  
Joseph W. Kim ◽  
Paolo A. Ascierto ◽  
...  

Purpose Metastatic esophagogastric cancer treatments after failure of second-line chemotherapy are limited. Nivolumab demonstrated superior overall survival (OS) versus placebo in Asian patients with advanced gastric or gastroesophageal junction cancers. We assessed the safety and efficacy of nivolumab and nivolumab plus ipilimumab in Western patients with chemotherapy-refractory esophagogastric cancers. Patients and Methods Patients with locally advanced or metastatic chemotherapy–refractory gastric, esophageal, or gastroesophageal junction cancer from centers in the United States and Europe received nivolumab or nivolumab plus ipilimumab. The primary end point was objective response rate. The association of tumor programmed death-ligand 1 status with response and survival was also evaluated. Results Of 160 treated patients (59 with nivolumab 3 mg/kg, 49 with nivolumab 1 mg/kg plus ipilimumab 3 mg/kg, 52 with nivolumab 3 mg/kg plus ipilimumab 1 mg/kg), 79% had received two or more prior therapies. At the data cutoff, investigator-assessed objective response rates were 12% (95% CI, 5% to 23%), 24% (95% CI, 13% to 39%), and 8% (95% CI, 2% to 19%) in the three groups, respectively. Responses were observed regardless of tumor programmed death-ligand 1 status. With a median follow-up of 28, 24, and 22 months across the three groups, 12-month progression-free survival rates were 8%, 17%, and 10%, respectively; 12-month OS rates were 39%, 35%, and 24%, respectively. Treatment-related grade 3/4 adverse events were reported in 17%, 47%, and 27% of patients in the three groups, respectively. Conclusion Nivolumab and nivolumab plus ipilimumab demonstrated clinically meaningful antitumor activity, durable responses, encouraging long-term OS, and a manageable safety profile in patients with chemotherapy-refractory esophagogastric cancer. Phase III studies evaluating nivolumab or nivolumab plus ipilimumab in earlier lines of therapy for esophagogastric cancers are underway.


Author(s):  
David M. O'Malley ◽  
Giovanni Mendonca Bariani ◽  
Philippe A. Cassier ◽  
Aurelien Marabelle ◽  
Aaron R. Hansen ◽  
...  

PURPOSE Pembrolizumab demonstrated durable antitumor activity in patients with previously treated, advanced microsatellite instability–high or mismatch repair–deficient (MSI-H/dMMR) tumors, including endometrial cancer, in the nonrandomized, open-label, multicohort, phase II KEYNOTE-158 study ( NCT02628067 ). We report efficacy and safety outcomes for patients with MSI-H/dMMR endometrial cancer enrolled in KEYNOTE-158. METHODS Eligible patients from cohorts D (endometrial cancer, regardless of MSI-H/dMMR status) and K (any MSI-H/dMMR solid tumor, except colorectal) with previously treated, advanced MSI-H/dMMR endometrial cancer received pembrolizumab 200 mg once every 3 weeks for 35 cycles. The primary end point was objective response rate per RECIST version 1.1 by independent central radiologic review. Secondary end points included duration of response, progression-free survival, overall survival, and safety. RESULTS As of October 5, 2020, 18 of 90 treated patients (20%) had completed 35 cycles of pembrolizumab and 52 (58%) had discontinued treatment. In the efficacy population (patients who received ≥ 1 dose of pembrolizumab and had ≥ 26 weeks of follow-up; N = 79), the median time from first dose to data cutoff was 42.6 (range, 6.4-56.1) months. The objective response rate was 48% (95% CI, 37 to 60), and median duration of response was not reached (2.9-49.7+ months). Median progression-free survival was 13.1 (95% CI, 4.3 to 34.4) months, and median overall survival was not reached (95% CI, 27.2 months to not reached). Among all treated patients, 76% had ≥ 1 treatment-related adverse event (grades 3-4, 12%). There were no fatal treatment-related events. Immune-mediated adverse events or infusion reactions occurred in 28% of patients (grades 3-4, 7%; no fatal events). CONCLUSION Pembrolizumab demonstrated robust and durable antitumor activity and encouraging survival outcomes with manageable toxicity in patients with previously treated, advanced MSI-H/dMMR endometrial cancer.


2019 ◽  
Vol 37 (29) ◽  
pp. 2592-2600 ◽  
Author(s):  
Jonathan E. Rosenberg ◽  
Peter H. O’Donnell ◽  
Arjun V. Balar ◽  
Bradley A. McGregor ◽  
Elisabeth I. Heath ◽  
...  

PURPOSE Locally advanced or metastatic urothelial carcinoma is an incurable disease with limited treatment options, especially for patients who were previously treated with platinum and anti–programmed death 1 or anti–programmed death ligand 1 (PD-1/L1) therapy. Enfortumab vedotin is an antibody–drug conjugate that targets Nectin-4, which is highly expressed in urothelial carcinoma. METHODS EV-201 is a global, phase II, single-arm study of enfortumab vedotin 1.25 mg/kg (intravenously on days 1, 8, and 15 of every 28-day cycle) in patients with locally advanced or metastatic urothelial carcinoma who were previously treated with platinum chemotherapy and anti–PD-1/L1 therapy. The primary end point was objective response rate per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 by blinded independent central review. Key secondary end points were duration of response, progression-free survival, overall survival, safety, and tolerability. RESULTS Enfortumab vedotin was administered to 125 patients with metastatic urothelial carcinoma. Median follow-up was 10.2 months (range, 0.5 to 16.5 months). Confirmed objective response rate was 44% (95% CI, 35.1% to 53.2%), including 12% complete responses. Similar responses were observed in prespecified subgroups, such as those patients with liver metastases and those with no response to prior anti–PD-1/L1 therapy. Median duration of response was 7.6 months (range, 0.95 to 11.30+ months). The most common treatment-related adverse events were fatigue (50%), any peripheral neuropathy (50%), alopecia (49%), any rash (48%), decreased appetite (44%), and dysgeusia (40%). No single treatment-related adverse events grade 3 or greater occurred in 10% or more of patients. CONCLUSION Enfortumab vedotin demonstrated a clinically meaningful response rate with a manageable and tolerable safety profile in patients with locally advanced or metastatic urothelial carcinoma who were previously treated with platinum and anti–PD-1/L1 therapies.


2018 ◽  
Vol 73 (1) ◽  
pp. 26-27 ◽  
Author(s):  
Patrick A. Ott ◽  
Yung-Jue Bang ◽  
Dominique Berton-Rigaud ◽  
Elena Elez ◽  
Michael J. Pishvaian ◽  
...  

2021 ◽  
Vol 39 (3_suppl) ◽  
pp. 415-415
Author(s):  
Arish Noor ◽  
Luis E. Aguirre ◽  
Kirsten Blue ◽  
Trenton Avriett ◽  
Estrella M. Carballido ◽  
...  

415 Background: Immune checkpoint inhibitors (ICI) have been approved in solid tumors with dMMR. However, only limited data are available for PDAC with dMMR given the rarity of dMMR in PDAC. We evaluated efficacy of ICIs in PDAC with dMMR. Methods: Retrospective clinical and pathologic data were collected for patients (pts) with pancreatic adenocarcinoma from May 2017 to June 2020 at Moffitt cancer center. Results: We identified 10 pts with dMMR PDAC. The median age was 64.5 years (range: 42-86) and 4 pts were male. 4 pts had resectable disease, 3 had locally advanced and 3 had metastatic disease at initial diagnosis. MSH6 deficiency (def) was found in 2 cases, PMS2 def in 2, MLH/PMS2 def in 5, and MSH2/MSH6 in 1. 7 pts were treated with ICIs. 3 pts had locally advanced and 4 had metastatic disease when they started ICIs. 5 received Pembrolizumab (pem), 1 received ipilimumab/ nivolumab (ipi/nivo), and 1 received pem then ipi/nivo after progressive disease (PD) on pem. The median number of prior lines of chemotherapy was 1 (range 0-2). 6 pts were evaluable, and 1 had rapid disease progression after 1 dose of pem. Among 6 evaluable pts, 3 had an objective response (1: complete response and 2: partial response), and 2 had stable disease (SD). Median progression-free survival was 8.2 mo, and median overall survival was not reached with median follow-up (FU) of 6.8 mo. The median duration of response was not reached with a median FU of 22.6 mo. The pt with CR remained disease-free for up to 22 months. The pt whose treatment was switched to ipi/nivo after PD on pem achieved SD > 4mo on ipi/nivo. While on immunotherapy, one patient with ipi/nivo developed immunotherapy associated rash requiring systemic steroids, and another on pem developed hypothyroidism requiring levothyroxine. Conclusions: This series suggest ICIs can provide durable clinical efficacy in pts with dMMR PDAC.


Cancers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2985
Author(s):  
Ian Chau ◽  
Nicolas Penel ◽  
Andres O. Soriano ◽  
Hendrik-Tobias Arkenau ◽  
Jennifer Cultrera ◽  
...  

Ramucirumab (anti-VEGFR2) plus pembrolizumab (anti-PD1) demonstrated promising antitumor activity and tolerability among patients with previously treated advanced cancers, supporting growing evidence that combination therapies modulating the tumor microenvironment may expand the spectrum of patients who respond to checkpoint inhibitors. Here we present the results of this combination in first-line patients with metastatic G/GEJ cancer. Twenty-eight patients (≥18 years) with no prior systemic chemotherapy in the advanced/metastatic setting received ramucirumab (8 mg/kg days 1 and 8) plus pembrolizumab (200 mg day 1) every 3 weeks as part of JVDF phase 1a/b study. The primary endpoint was safety. Secondary endpoints included progression-free survival (PFS), objective response rate (ORR), and overall survival (OS). Tumors were PD-L1-positive (combined positive score ≥ 1) in 19 and -negative in 6 patients. Eighteen patients experienced grade 3 treatment-related adverse events, most commonly hypertension (14%) and elevated alanine/aspartate aminotransferase (11% each), with no grade 4 or 5 reported. The ORR was 25% (PD-L1-positive, 32%; PD-L1-negative, 17%) with duration of response not reached. PFS was 5.6 months (PD-L1-positive, 8.6 months; PD-L1-negative, 4.3 months), and OS 14.6 months (PD-L1-positive, 17.3 months; PD-L1-negative, 11.3 months). Acknowledging study design limitations, ramucirumab plus pembrolizumab had encouraging durable clinical activity with no unexpected toxicities in treatment-naïve biomarker-unselected metastatic G/GEJ cancer, and improved outcomes in patients with PD-L1-positive tumors.


2017 ◽  
Vol 35 (15_suppl) ◽  
pp. 4525-4525 ◽  
Author(s):  
Noah M. Hahn ◽  
Thomas Powles ◽  
Christophe Massard ◽  
Hendrik-Tobias Arkenau ◽  
Terence W. Friedlander ◽  
...  

4525 Background: Anti-PD-L1 immunotherapy shows promising clinical activity in UC. We report a planned update of the safety and efficacy of durvalumab in patients (pts) with locally advanced/metastatic UC from a multicenter, phase 1/2 open-label study. Methods: Pts received durvalumab 10 mg/kg every 2 weeks (Q2W) up to 12 months (mo) or until unacceptable toxicity, progression, or starting another anticancer therapy. Primary endpoints were safety and confirmed objective response rate (ORR) by blinded independent central review (RECIST v1.1). Duration of response (DoR), progression-free survival (PFS) and overall survival (OS) were key secondary endpoints. Tumor PD-L1 expression was assessed by Ventana SP263 assay (PD-L1 high = ≥25% PD-L1 expression on tumor or immune cells). Results: As of Oct 24, 2016 (data cutoff [DCO]), 191 pts had received treatment. Median follow-up was 5.78 mo (range, 0.4–25.9). All pts had Stage 4 disease and 99.5% had prior anticancer therapy (95.3% post-platinum). As of DCO, ORR was 17.8% (34/191), including 7 CRs, with responses observed regardless of PD-L1 status (Table). Responses occurred early (median time to response, 1.41 mo) and were durable (median DoR not reached [NR]). Median PFS and OS were 1.5 mo (95% CI, 1.4, 1.9) and 18.2 mo (95% CI, 8.1, not estimable [NE]), respectively; the 1-year OS rate was 55.0% (95% CI, 43.9%, 64.7%). Grade 3/4 treatment-related AEs occurred in 6.8% of pts; grade 3/4 immune-mediated (im)AEs occurred in 4 pts; 2 pts discontinued due to imAEs (acute kidney injury and autoimmune hepatitis). Conclusions: Durvalumab 10 mg/kg Q2W shows favorable clinical activity and an excellent safety profile in locally advanced/metastatic UC pts. Table. Antitumor activity in UC pts, including second-line or greater (≥2L) post-platinum pts Clinical trial information: NCT01693562. [Table: see text]


2017 ◽  
Vol 35 (15_suppl) ◽  
pp. 1009-1009 ◽  
Author(s):  
Rebecca Alexandra Dent ◽  
Sung-Bae Kim ◽  
Seock-Ah Im ◽  
Marc Espie ◽  
Sibel Blau ◽  
...  

1009 Background: The oral Akt inhibitor IPAT is being evaluated in cancers with a high prevalence of PI3K/Akt pathway activation, including TNBC. Methods: Eligible patients (pts) had measurable inoperable locally advanced/metastatic TNBC previously untreated with systemic therapy. Pts were stratified by prior (neo)adjuvant therapy, chemotherapy-free interval and tumor PTEN status, and randomized 1:1 to P 80 mg/m2 (d1, 8 & 15) with either IPAT 400 mg or PBO (d1–21) q28d until progression or unacceptable toxicity. Co-primary endpoints were progression-free survival (PFS) in the ITT population and pts with PTEN-low tumors by IHC. Secondary endpoints included objective response rate (ORR), duration of response (DoR) and overall survival in the ITT and IHC PTEN-low populations, efficacy in pts with PIK3CA/AKT1/PTEN-altered tumors by next-generation sequencing (NGS), and safety. Results: Baseline characteristics were generally balanced between arms. Efficacy is shown below. The most common grade ≥3 AEs (grouped terms) were diarrhea (23% IPAT+P vs 0% PBO+P; no grade 4 or colitis in either arm), neutropenia (18% vs 8%), asthenia (5% vs 6%), peripheral neuropathy (5% vs 5%) and pneumonia (5% vs 0%). More pts receiving IPAT+P than PBO+P had an AE leading to dose reduction of IPAT/PBO (21% vs 6%) or P (38% vs 11%) but median cumulative dose intensity was similar (IPAT/PBO: 99% vs 100%; P: 100% vs 100%). AEs led to IPAT/PBO discontinuation in 13% vs 11% of pts, respectively; 2 pts (3%) discontinued IPAT for grade 3 diarrhea. Conclusions: Adding IPAT to P for TNBC modestly improved PFS in the ITT pts. The effect was more pronounced in the prespecified subgroup with PIK3CA/AKT1/PTEN alterations, warranting further evaluation of IPAT in these pts. AEs were manageable. Clinical trial information: NCT02162719. [Table: see text]


2020 ◽  
Vol 38 (4_suppl) ◽  
pp. TPS597-TPS597
Author(s):  
Milind M. Javle ◽  
Walid Labib Shaib ◽  
Stephan Braun ◽  
Marc Engelhardt ◽  
Mitesh J. Borad ◽  
...  

TPS597 Background: Deregulation of the FGFR signaling pathway is implicated in various cancers. In iCCA, FGFR genetic aberrations include FGFR2 fusions and, less commonly, FGFR2 M/A. iCCA prognosis is poor, and chemotherapeutic and targeted treatment options are limited. While FGFR2 fusions are acknowledged oncogenic drivers, the oncogenic potential of FGFR2 M/A is less well defined. Derazantinib (DZB) is an investigational, oral small-molecule kinase inhibitor with activity against FGFR1, 2 and 3, which demonstrated antitumor activity in patients with unresectable iCCA with FGFR2 fusions. Based on preliminary efficacy data demonstrating durable responses of > 6 months and a clinically meaningful progression-free survival in a subset of iCCA patients harboring FGFR2 M/A (NCT01752920), the multicenter, multicohort open-label phase 2 study FIDES-01 is evaluating the effect of DZB in separate cohorts of iCCA patients with FGFR2 fusions or FGFR2 M/A. Methods: The new cohort evaluates 300 mg once daily dosing of DZB in patients with unresectable iCCA with FGFR2 M/A per liquid or tissue biopsy-based next generation sequencing and at least one previous systemic therapy. Treatment will continue until progressive disease, intolerance, withdrawal of informed consent, or death. Using a Simon’s two-stage design, the primary endpoint to assess the antitumor activity of DZB is the proportion of patients with PFS at 3 months (PFS3; per RECIST 1.1 central review). Secondary objectives are evaluation of median PFS, objective response rate, duration of response, safety profile, quality of life (incl., QLQ-C30, QLQ-BIL21, EQ-5D), and symptom response from baseline. Current status: The study was initiated in July 2019 with planned enrollment of 43 patients with confirmed FGFR2 M/A. Clinical trial information: NCT03230318.


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