Abstract 3748
Background
Atezo, a monoclonal antibody targeting PD-L1, is an approved therapy for locally advanced/metastatic urothelial cancer. The pivotal IMvigor210 and IMvigor211 phase II and III trials excluded pts with significant pre-existing AID. The SAUL study (NCT02928406) in pts more representative of real-world practice showed median overall survival (OS) of 8.7 mo and safety consistent with previous atezo trials [Sternberg, Eur Urol 2019]. We analysed outcomes in pts with a history of AID.
Methods
Pts with locally advanced/metastatic urinary tract carcinoma, including pts ineligible for IMvigor211, received atezo 1200 mg q3w until loss of clinical benefit or unacceptable toxicity. The primary endpoint was safety, including adverse events of special interest (AESIs) for atezo as defined in the protocol. OS was a secondary endpoint. Subgroup analyses of AID pts were prespecified.
Results
Of 1004 pts enrolled from Nov 2016 to Mar 2018, 997 received atezo. In 35 pts presenting with AID, the most common pre-existing conditions were psoriasis (n = 15), thyroid AID (n = 5) and rheumatoid arthritis (n = 4). Compared with non-AID pts, AID pts had numerically more AESIs (46% vs 30%; grade ≥3 14% vs 6%) and treatment-related grade 3/4 AEs (26% vs 12%), but there were no relevant increases in treatment-related deaths (0% vs 1%) or AEs leading to atezo discontinuation (9% vs 6%). Pre-existing AID worsened in 6 pts: flares subsequently improved or resolved in 4 pts (without stopping atezo in 3 pts) but were unresolved in 2 pts (rash in 1 pt continuing atezo, psoriasis in 1 pt who discontinued atezo). In the 962 non-AID pts, new immune-related AEs were infrequent (6% hypothyroidism, 4% hyperthyroidism, 2% pneumonitis, 1% colitis). Efficacy was similar in AID vs non-AID pts (median OS 8.2 vs 8.8 mo, respectively; 1-year OS 31% vs 42%; disease control 51% vs 39%; median PFS 4.4 vs 2.2 mo).
Conclusions
In 35 atezo-treated pts with pre-existing AID, incidences of AESIs and treatment-related AEs appeared acceptable. AEs were manageable and rarely led to atezo discontinuation. Treating these pts requires caution but AID is not a barrier to atezo therapy per se.
Clinical trial identification
NCT02928406.
Editorial acknowledgement
Jennifer Kelly (Medi-Kelsey Ltd), funded by F Hoffmann-La Roche.
Legal entity responsible for the study
F Hoffmann-La Roche.
Funding
F Hoffmann-La Roche.
Disclosure
Y. Loriot: Honoraria (self), Honoraria (institution), Research grant / Funding (institution), Travel / Accommodation / Expenses: Roche; Honoraria (self), Honoraria (institution), Research grant / Funding (institution), Travel / Accommodation / Expenses: MSD; Honoraria (self), Honoraria (institution): Astellas; Honoraria (self), Honoraria (institution), Travel / Accommodation / Expenses: Janssen; Honoraria (self), Honoraria (institution), Travel / Accommodation / Expenses: AstraZeneca; Honoraria (self), Honoraria (institution): BMS; Honoraria (self), Honoraria (institution), Travel / Accommodation / Expenses: Seattle Genetics; Honoraria (self), Honoraria (institution), Research grant / Funding (institution): Sanofi; Honoraria (self), Honoraria (institution): Clovis; Honoraria (institution): Incyte; Honoraria (self), Honoraria (institution): Pfizer; Licensing / Royalties, Pending patent (USA 62/455211, Europe 17209098.7): n/a. C.N. Sternberg: Advisory / Consultancy: MSD; Advisory / Consultancy: Clovis; Advisory / Consultancy: Bristol-Myers Squibb; Advisory / Consultancy: Incyte; Advisory / Consultancy: AstraZeneca; Research grant / Funding (institution): Janssen; Research grant / Funding (institution): Roche; Research grant / Funding (institution): Bayer; Research grant / Funding (institution): Pfizer. D. Castellano Gauna: Advisory / Consultancy: Bayer; Advisory / Consultancy: Roche; Advisory / Consultancy: Astellas; Advisory / Consultancy: Janssen; Advisory / Consultancy: Sanofi; Advisory / Consultancy: Pfizer; Advisory / Consultancy: MSD; Advisory / Consultancy: Merck Serono; Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: BMS; Advisory / Consultancy: Ipsen; Advisory / Consultancy: Exelisis; Advisory / Consultancy: Lilly. H. Dumez: Advisory / Consultancy: Janssen; Advisory / Consultancy, Travel / Accommodation / Expenses: Sanofi; Advisory / Consultancy, Travel / Accommodation / Expenses: Astellas; Advisory / Consultancy, Travel / Accommodation / Expenses: Roche; Travel / Accommodation / Expenses: Novartis; Travel / Accommodation / Expenses: Bayer; Travel / Accommodation / Expenses: AstraZeneca; Travel / Accommodation / Expenses: Ipsen; Travel / Accommodation / Expenses: MSD; Travel / Accommodation / Expenses: Jansen-Cilag; Travel / Accommodation / Expenses: Pfizer. R. Huddart: Honoraria (self), Travel / Accommodation / Expenses: Janssen; Advisory / Consultancy, Research grant / Funding (self), Research grant / Funding (institution), Travel / Accommodation / Expenses: MSD; Advisory / Consultancy, Speaker Bureau / Expert testimony, Travel / Accommodation / Expenses: Roche; Advisory / Consultancy, Travel / Accommodation / Expenses: Nektar; Research grant / Funding (institution): Cancer Research UK. K.M. Vianna: Advisory / Consultancy, Speaker Bureau / Expert testimony: Lilly; Advisory / Consultancy: Novartis; Advisory / Consultancy: Bayer; Advisory / Consultancy: Pfizer; Speaker Bureau / Expert testimony: Roche; Speaker Bureau / Expert testimony: AstraZeneca; Speaker Bureau / Expert testimony: BMS. T. Alonso Gordoa: Advisory / Consultancy: BMS; Advisory / Consultancy: MSD; Advisory / Consultancy, Research grant / Funding (institution): Roche; Advisory / Consultancy, Speaker Bureau / Expert testimony: Astellas; Advisory / Consultancy, Speaker Bureau / Expert testimony: IPSEN; Advisory / Consultancy, Travel / Accommodation / Expenses: Sanofi; Speaker Bureau / Expert testimony, Travel / Accommodation / Expenses: Pfizer; Speaker Bureau / Expert testimony: Janssen; Speaker Bureau / Expert testimony: Novartis. I.A. Skoneczna: Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Roche; Honoraria (self), Advisory / Consultancy: MSD; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Travel / Accommodation / Expenses: Astellas; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution), Travel / Accommodation / Expenses: Bayer; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution), Travel / Accommodation / Expenses: Janssen; Honoraria (self), Research grant / Funding (institution), Travel / Accommodation / Expenses: AstraZeneca; Honoraria (self): Pfizer; Speaker Bureau / Expert testimony: IPSEN; Speaker Bureau / Expert testimony: BMS. A. Fay: Honoraria (self), Advisory / Consultancy: Pfizer; Honoraria (self), Advisory / Consultancy: Novartis; Honoraria (self): Bristol-Myers Squibb; Honoraria (self), Advisory / Consultancy: AstraZeneca; Honoraria (self), Advisory / Consultancy: Roche; Advisory / Consultancy: Merck Sharp & Dohme. P. Maroto: Advisory / Consultancy: Pfizer; Advisory / Consultancy: Novartis; Advisory / Consultancy: Janssen; Advisory / Consultancy, Research grant / Funding (institution): Roche; Advisory / Consultancy: Sanofi; Advisory / Consultancy: Bayer; Advisory / Consultancy: Bristol-Myers Squibb. S.F. Oosting: Research grant / Funding (institution): Celldex; Research grant / Funding (institution): Novartis. S. Fear: Full / Part-time employment: F. Hoffmann-La Roche. F. Di Nucci: Shareholder / Stockholder / Stock options, Full / Part-time employment: Roche/ Genentech. S. De Ducla: Shareholder / Stockholder / Stock options, Full / Part-time employment: F. Hoffmann-La Roche. E. Choy: Honoraria (self): AbbVie; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony: Lilly; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Novartis; Honoraria (self): ObsEva; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Pfizer; Honoraria (self): Merck Serono; Honoraria (self), Speaker Bureau / Expert testimony: Regeneron; Honoraria (self), Advisory / Consultancy: Roche/Genentech; Honoraria (self): R-Pharm; Honoraria (self): SynAct Pharma; Honoraria (self), Speaker Bureau / Expert testimony, Research grant / Funding (institution): Sanofi; Advisory / Consultancy: Sanofi/Regeneron; Speaker Bureau / Expert testimony: Bristol-Myers Squibb; Speaker Bureau / Expert testimony: Janssen; Speaker Bureau / Expert testimony, Research grant / Funding (institution): Roche; Speaker Bureau / Expert testimony: UCB; Research grant / Funding (institution): Bio-Cancer Treatment International; Research grant / Funding (institution): Biogen. All other authors have declared no conflicts of interest.
Resources from the same session
2108 - Biomarker analyses of ramucirumab in patients with platinum refractory urothelial cancer from RANGE, a global, randomized, double-blind, phase 3 study.
Presenter: Michiel Van der Heijden
Session: Poster Display session 3
Resources:
Abstract
3090 - Comparison of Immuno-Oncology (IO) Biomarkers in Adenocarcinoma (ACB), Urothelial Carcinoma (UCB) and Squamous Cell Carcinoma (SCCB) of the Bladder, with interim results from PURE01
Presenter: Daniele Raggi
Session: Poster Display session 3
Resources:
Abstract
5211 - Potential role of a clinical, taxonomical classification and RNA expression integrated signature to predict response to neoadjuvant platinum-based chemotherapy in muscle-invasive bladder cancer (MIBC) patients
Presenter: Albert Font
Session: Poster Display session 3
Resources:
Abstract
3206 - Hyperphosphatemia due to Erdafitinib (a Pan-FGFR Inhibitor) and Anti-tumor Activity Among Patients (Pts) with Advanced Urothelial Carcinoma (UC)
Presenter: Scott Tagawa
Session: Poster Display session 3
Resources:
Abstract
3110 - Prognostic role of FGFR Mutations and FGFR mRNA expression in metastatic urothelial cancer treated with anti-PD(L1) inhibitors in first and second line setting
Presenter: Florian Roghmann
Session: Poster Display session 3
Resources:
Abstract
3564 - Circulating tumour DNA (ctDNA) utility as a biomarker for metastatic urothelial carcinoma (mUC)
Presenter: Jean-Michel Lavoie
Session: Poster Display session 3
Resources:
Abstract
2760 - Comparative analysis of tumor mutational burden (TMB) prediction methods and its association with determinants of the tumor immune microenvironment of urothelial bladder cancer (UBC)
Presenter: Markus Eckstein
Session: Poster Display session 3
Resources:
Abstract
2513 - The Immunoscore in patients with urothelial carcinoma treated with neoadjuvant chemotherapy: clinical significance for pathological response and survival
Presenter: Elise Nassif
Session: Poster Display session 3
Resources:
Abstract
2835 - Genomic analysis of urothelial cancer and associations with treatment choice and outcome
Presenter: David Sarid
Session: Poster Display session 3
Resources:
Abstract
5763 - cfDNA is an acceptable but insufficient means of characterizing FGFR3 mutation in patients with metastatic urothelial cancer (mUC)
Presenter: Sumanta Pal
Session: Poster Display session 3
Resources:
Abstract