Phase I Study of Stereotactic Body Radiotherapy plus Nivolumab and Urelumab or Cabiralizumab in Advanced Solid Tumors

Corey C. Foster, Gini F. Fleming, Theodore G. Karrison, Chih Yi Liao, Ami V. Desai, John W. Moroney, Mark J. Ratain, Rita Nanda, Blase N. Polite, Olwen M. Hahn, Peter H. O’Donnell, Everett E. Vokes, Hedy L. Kindler, Robyn Hseu, Linda A. Janisch, Julia Dai, Mark D. Hoffman, Ralph R. Weichselbaum, Sean P. Pitroda, Steven J. ChmuraJason J. Luke

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Background: CD137 agonism and CSF-1R blockade augment stereotactic body radiotherapy (SBRT) and anti-PD1 in pre-clinical models. We evaluated the safety and efficacy of SBRT with nivolumab+urelumab (CD137 agonist) or nivolumab+cabiralizumab (CSF-1R inhibitor). Patients and methods: This phase I clinical trial enrolled patients with advanced solid tumors that had progressed on standard therapies. SBRT was delivered to 1-4 metastases with nivolumab+urelumab or nivolumab+cabiralizumab given concurrently and following SBRT. Dose limiting toxicity (DLT) was the primary endpoint with anatomic location-specific SBRT doses deemed safe if =33% DLT frequency was observed. Secondary endpoints included RECISTv1.1 response, progression-free survival (PFS), overall survival (OS), and molecular correlative studies. Results: Sixty patients were enrolled, and median follow-up for living patients is 13.8 months. Of these, 23 (38%) received SBRT+nivolumab+urelumab and 37 (62%) received SBRT+nivolumab+cabiralizumab. Seven patients (12%) experienced a DLT (n=3 grade 3, n=4 grade 4) in the following anatomic cohorts: abdominal/pelvic (3/17, 18%), liver (1/13, 8%), central lung (2/14, 14%), and peripheral lung (1/12, 8%). Of 41 patients radiographically evaluable for best overall response including 55 radiated and 23 unirradiated RECIST target lesions, 2 had complete responses (5%), 7 had partial responses (17%), 12 had stable disease (29%), and 20 had progression (49%). Median estimated PFS and OS are 3.0 months (95% CI 2.9-4.8) and 17.0 months (95% CI 6.8-undetermined), respectively. No patients with elevated pre-SBRT serum interleukin-8 experienced a response. Conclusions: SBRT to =4 sites with nivolumab+urelumab or nivolumab+cabiralizumab for treating advanced solid tumors is feasible with acceptable toxicity and modest anti-tumor activity.

Original languageEnglish (US)
JournalClinical Cancer Research
Volume27
Issue number20
DOIs
StatePublished - Oct 15 2021
Externally publishedYes

Keywords

  • Immunotherapy
  • Neoplasm metastasis
  • Radiotherapy
  • Receptors, Interleukin-8
  • Tumor Microenvironment

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Fingerprint

Dive into the research topics of 'Phase I Study of Stereotactic Body Radiotherapy plus Nivolumab and Urelumab or Cabiralizumab in Advanced Solid Tumors'. Together they form a unique fingerprint.

Cite this