Efficacy, safety, and tolerability of tivozanib (TIVO) in heavily pretreated patients (pts) with advanced clear-cell renal cell carcinoma (ccRCC).

Authors

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Andrew Johns

Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX

Andrew Johns , Matthew T Campbell , Mamie Gao , Zita Dubauskas Lim , Emily Wang , Andrew Warren Hahn , Jianjun Gao , Amishi Yogesh Shah , Pavlos Msaouel , Nizar M. Tannir

Organizations

Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, The University of Texas MD Anderson Cancer Center, Houston, TX

Research Funding

No funding sources reported

Background: TIVO, a potent tyrosine kinase inhibitor that predominantly targets vascular endothelial growth factor receptors, is approved as a third or later line therapy for advanced RCC based on improved progression-free survival (PFS) compared with sorafenib in the TIVO-3 trial. However, TIVO-3 was conducted before immune checkpoint-based therapies (ICT), cabozantinib (CABO), and lenvatinib/everolimus (LEN/EVE) became fully incorporated in the sequential treatment paradigm for advanced ccRCC. Hence, an appraisal of the role of TIVO in the current RCC treatment landscape is warranted. Methods: We performed a retrospective study of pts with advanced ccRCC treated with TIVO at MD Anderson Cancer Center during 6/2021-7/2023. Demographic and clinical data were abstracted from the electronic medical records. A blinded radiologist assessed tumor response by RECIST v1.1. We assessed objective response rate (ORR), clinical benefit rate [percentage of all treated pts who achieved a complete or partial response (PR) or had stable disease (SD) for ≥6 months (mo)], time on treatment (TOT), PFS, overall survival (OS), and safety. Results: 30 pts (23 males, 7 females; median age 66 years, range 43-80) were included in this analysis. Median follow-up was 10.8 mo. At initiation of TIVO, 77% of pts had ECOG PS 0/1, 23% had PS ≥2; 53% had intermediate-risk and 47% had poor-risk disease by IMDC; 83% had ≥3 metastatic sites; 80% had prior nephrectomy. Median number of prior therapies was 4 (range, 1-8). All pts received prior ICT (30% nivolumab/ipilimumab), 40% received prior axitinib, 87% CABO and 60% LEN +/- EVE. 23 pts (76.7%) started TIVO at full-dose (1.34 mg/day, 3 weeks on, 1 week off) and 7 pts (23.3%) at 0.89 mg/day, 3 weeks on, 1 week off. Of 26 pts with evaluable radiographic response, 2 pts had a confirmed PR (ORR 7.7%) and 5 pts had SD for ≥6 mo (clinical benefit rate 23.3%). Median TOT was 3.2 mo (range, 0.1-13.5), median PFS 3.7 mo (range, 0.7-13.5); median OS has not been reached (13 pts had died at time of analysis). 7 pts (23.3%; 5 pts who started at 1.34 mg/d and 2 pts who started at 0.89 mg/d) required dose-reduction due to treatment related adverse events (TRAEs). 15 pts (50%) had ≥1 any grade TRAE; 4 pts (13.3%) had any grade hypertension. There were 6 Grade ≥3 TRAEs [congestive heart failure (3), hypertension, mucositis, GI perforation]. 5 pts (16.6%) were continuing treatment with TIVO at time of analysis; 20 pts (66.7%) discontinued TIVO due to progressive disease, 3 pts (10%) for TRAEs, and 2 pts for other reasons (infection, worsening of prior ICT-mediated neuropathy). 1 pt died of TIVO-related GI perforation. Conclusions: In this cohort of heavily pretreated pts with advanced ccRCC, TIVO yielded a modest clinical benefit in a minority of pts who received prior ICT, CABO, and LEN +/- EVE. TRAEs observed with TIVO were consistent with previously published reports.

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Abstract Details

Meeting

2024 ASCO Genitourinary Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session C: Renal Cell Cancer; Adrenal, Penile, and Testicular Cancers

Track

Renal Cell Cancer,Adrenal Cancer,Penile Cancer,Testicular Cancer

Sub Track

Therapeutics

Citation

J Clin Oncol 42, 2024 (suppl 4; abstr 419)

DOI

10.1200/JCO.2024.42.4_suppl.419

Abstract #

419

Poster Bd #

G22

Abstract Disclosures