9 17

Cited 0 times in

PD-L1 tumour expression is predictive of pazopanib response in soft tissue sarcoma

 Sang Kyum Kim  ;  Jee Hung Kim  ;  Seung Hyun Kim  ;  Young Han Lee  ;  Jung Woo Han  ;  Wooyeol Baek  ;  Ha Young Woo  ;  Min Kyung Jeon  ;  Hyo Song Kim 
 BMC CANCER, Vol.21(1) : 336, 2021-03 
Journal Title
Issue Date
Biomarker ; PD-L1 ; Pazopanib ; Soft tissue sarcoma
Background: Pazopanib, a multitargeted tyrosine kinase inhibitor, is recommended as the standard treatment for refractory soft tissue sarcoma (STS). However, there are comparatively few molecular determinants for predicting pazopanib efficacy. Based on correlative studies regarding the predictive impact of PD-L1, we investigated the clinical relevance of PD-L1 expression and evaluated its value for predicting pazopanib efficacy. Methods: Tumour tissues from patients with advanced STS who went on to receive pazopanib were assessed for PD-L1 expression. Immunohistochemistry was performed using an anti-PD-L1 antibody, and the PD-L1 tumour proportion score (TPS) was calculated as the percentage of at least 100 viable cells with positive expression, defined as TPS ≥ 1%. Results: Among the 67 patients, 8 (11.9%) achieved partial response and a median progression-free survival (PFS) of 4.8 months (95% CI 3.8-5.7). PD-L1 expression in tumour cells was detected in 13 (19.4%) cases and the TPS scores ranged from 1 to 100%, as follows: 0 (n = 54, 80.6%), 1-9% (n = 3, 4.5%), 10-49% (n = 9, 13.4%), and ≥ 50% (n = 1, 1.5%). PD-L1 positive tumours exhibited a poorer response to pazopanib treatment than the PD-L1 negative tumours (0% vs 14.8%, P = 0.07). PD-L1-positive tumours had significantly shorter PFS than the PD-L1-negative tumours (median PFS 2.8 vs 5.1 months, P = 0.003), and PD-L1 positivity was an independent predictor of poor response to pazopanib treatment (HR 2.77, 95% CI; 1.45-5.56, P = 0.006). Conclusion: We identified that PD-L1 expression can help predict the clinical outcome of patients with advanced STS treated with pazopanib. Based on our study, stratification should be actively considered in order to identify patients who will benefit from pazopanib or further therapeutic strategies for future clinical trials.
Files in This Item:
T202101205.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Plastic and Reconstructive Surgery (성형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Others (기타) > 1. Journal Papers
Yonsei Authors
Kim, Sang Kyum(김상겸) ORCID logo https://orcid.org/0000-0003-0768-9923
Kim, Seung Hyun(김승현) ORCID logo https://orcid.org/0000-0002-3878-1944
Kim, Jee Hung(김지형) ORCID logo https://orcid.org/0000-0002-9044-8540
Kim, Hyo Song(김효송) ORCID logo https://orcid.org/0000-0002-0625-9828
Baek, Wooyeol(백우열) ORCID logo https://orcid.org/0000-0002-6638-4110
Woo, Ha Young(우하영) ORCID logo https://orcid.org/0000-0002-3078-6484
Lee, Young Han(이영한) ORCID logo https://orcid.org/0000-0002-5602-391X
Jeon, Min Kyung(전민경)
Han, Jung Woo(한정우) ORCID logo https://orcid.org/0000-0001-8936-1205
사서에게 알리기


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.