%0 Journal Article %T Durvalumab consolidation in patients with unresectable stage III non-small cell lung cancer with driver genomic alterations. %A Riudavets M %A Auclin E %A Mosteiro M %A Dempsey N %A Majem M %A Lobefaro R %A López-Castro R %A Bosch-Barrera J %A Pilotto S %A Escalera E %A Tagliamento M %A Mosquera J %A Zalcman G %A Aboubakar-Nana F %A Ponce S %A Dal Maso A %A Spotti M %A Mielgo-Rubio X %A Mussat E %A Reyes R %A Benítez JC %A Lupinacci L %A Duchemann B %A De Giglio A %A Blaquier J %A Audigier-Valette C %A Scheffler M %A Nadal E %A Lopes G %A Signorelli D %A Garcia-Campelo R %A Menis J %A Bluthgen V %A Campayo M %A Recondo G %A Besse B %A Planchard D %A Mezquita L %J Eur J Cancer %V 167 %N 0 %D 05 2022 %M 35307254 %F 10.002 %R 10.1016/j.ejca.2022.02.014 %X Durvalumab is the standard-of-care as consolidation therapy after chemo-radiotherapy in stage III unresectable non-small cell lung cancer (NSCLC); however, its activity across patients with NSCLC harbouring driver genomic alterations (dGA) is poorly characterised.
Multicentre retrospective study including patients with stage III unresectable NSCLC treated with durvalumab after chemo-radiotherapy between April 2015 and October 2020 at 26 centres in Europe and America. Clinical and biological data were collected; dGA included: EGFR/BRAF/KRAS mutations (m) and ALK/ROS1 rearrangements (r). We evaluated progression-free survival (PFS) and overall survival (OS) based on dGA.
Out of 323 patients included, 43 patients had one dGA: KRASm (n = 26; 8 G12C), EGFRm (n = 8; 6 del19/ex21), BRAFm (n = 5; 4 V600E) and ALKr (n = 4). The median age was 66 years [39-84], gender ratio 1:1, with 98% performance status (PS) 0-1 and 19% non-smokers; 88% had adenocarcinoma. PD-L1 was positive in 85% (n = 4 missing). In the whole cohort, the median PFS was 17.5 months (mo.) (95% CI, 13.2-24.9) and median OS 47 mo (95%CI, 47-not reached [NR]). No statistically significant differences in terms of the median PFS were observed between patients with dGA vs. non-dGA: 14.9 mo (95% CI, 8.1-NR) vs. 18 mo. (95% CI, 13.4-28.3) (P = 1.0); however, when analysed separately: the median PFS was NR (11.3-NR) in the KRASm G12C vs. 8.1 mo (5.8-NR) in the EGFRm del19/ex21 vs. 7.8 mo (7.7-NR) in the BRAFm V600E/ALKr (P = 0.02).
We observed limited activity of durvalumab consolidation in patients with stage III unresectable NSCLC with EGFR/BRAFm and ALKr but not for those harbouring KRASm. Larger prospective studies are needed to confirm these findings.