Durvalumab plus pazopanib combination in patients with advanced soft tissue sarcomas: a phase II trial

Hee Jin Cho, Kum Hee Yun, Su Jin Shin, Young Han Lee, Seung Hyun Kim, Wooyeol Baek, Yoon Dae Han, Sang Kyum Kim, Hyang Joo Ryu, Joohee Lee, Iksung Cho, Heounjeong Go, Jiwon Ko, Inkyung Jung, Min Kyung Jeon, Sun Young Rha, Hyo Song Kim

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6 Scopus citations

Abstract

We aimed to determine the activity of the anti-VEGF receptor tyrosine-kinase inhibitor, pazopanib, combined with the anti-PD-L1 inhibitor, durvalumab, in metastatic and/or recurrent soft tissue sarcoma (STS). In this single-arm phase 2 trial (NCT03798106), treatment consisted of pazopanib 800 mg orally once a day and durvalumab 1500 mg once every 3 weeks. Primary outcome was overall response rate (ORR) and secondary outcomes included progression-free survival (PFS), overall survival, disease control rate, immune-related response criteria, and safety. The ORR was 30.4% and the trial met the pre-specified endpoint. The median PFS was 7.7 months (95% confidence interval: 5.7–10.4). The common treatment-related adverse events of grades 3–4 included neutropenia (9 [19.1%]), elevated aspartate aminotransferase (7 [14.9%]), alanine aminotransferase (5 [10.6%]), and thrombocytopenia (4 [8.5%]). In a prespecified transcriptomic analysis, the B lineage signature was a significant key determinant of overall response (P = 0.014). In situ analysis also showed that tumours with high CD20+ B cell infiltration and vessel density had a longer PFS (P = 6.5 × 10−4) than those with low B cell infiltration and vessel density, as well as better response (50% vs 12%, P = 0.019). CD20+ B cell infiltration was identified as the only independent predictor of PFS via multivariate analysis. Durvalumab combined with pazopanib demonstrated promising efficacy in an unselected STS cohort, with a manageable toxicity profile.

Original languageEnglish
Article number685
JournalNature Communications
Volume15
Issue number1
DOIs
StatePublished - Dec 2024

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