Prognostic value of PD-L1 expression in patients with unresectable stage III non-small cell lung cancer treated with chemoradiotherapy

Martina Vrankar (Avtor), Izidor Kern (Avtor), Karmen Stanič (Avtor)

Povzetek

Background: Expression of PD-L1 is the most investigated predictor of benefit from immune checkpoint blockade in advanced NSCLC but little is known about the association of PD-L1 expression and clinicopathological parameters of patients with unresectable stage III NSCLC. Methods: National registry data was searched for medical records of consecutive inoperable stage III NSCLC patients treated with ChT and RT from January 2012 to December 2017. Totally 249 patients were identified that met inclusion criteria and of those 117 patients had sufficient tissue for PD-L1 immunohistochemical staining. Results: Eighty patients (68.4%) expressed PD-L1 of >- 1% and 29.9% of more than 50%. Median PFS was 15.9 months in PD-L1 negative patients and 16.1 months in patients with PD-L1 expression >- 1% (p = 0.696). Median OS in PD-L1 negative patients was 29.9 months compared to 28.5 months in patients with PD-L1 expression >- (p = 0.888). There was no difference in median OS in patients with high PD-L1 expression (>- 50%) with 29.8 months compared to 29.9 months in those with low (1-49%) or no PD-L1 expression (p = 0.694). We found that patients who received a total dose of 60 Gy or more had significantly better median OS (32 months vs. 17.5 months, p < 0.001) as well as patients with PS 0 (33.2 vs. 20.3 months, p = 0.005). Conclusions: In our patients PD-L1 expression had no prognostic value regarding PFS and OS. Patients with good performance status and those who received a total radiation dose of more than 60 Gy had significantly better mOS.

Ključne besede

nedrobnocelični pljučni rak;kemoradioterapija;faza 3;non small cell lung cancer;chemoradiotherapy;stage III;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Založnik:	Springer Nature
UDK:	616-006
COBISS:	35740931
ISSN:	1748-717X
Št. ogledov:	756
Št. prenosov:	439
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarne ključne besede:	nedrobnocelični pljučni rak;kemoradioterapija;faza 3;
Komentar vira:	Nasl. z nasl. zaslona; Opis vira z dne 5. 11. 2020; Članek št. 247;
Strani:	str. 1-12
Letnik:	ǂVol. ǂ15
Zvezek:	ǂno. ǂ1
Čas izdaje:	Oct. 2020
DOI:	10.1186/s13014-020-01696-z
ID:	12143211