Abstract:
:Preoperative immunotherapy with anti-PD1 plus anti-CTLA4 antibodies has shown remarkable pathological responses in melanoma1 and colorectal cancer2. In NABUCCO (ClinicalTrials.gov: NCT03387761 ), a single-arm feasibility trial, 24 patients with stage III urothelial cancer (UC) received two doses of ipilimumab and two doses of nivolumab, followed by resection. The primary endpoint was feasibility to resect within 12 weeks from treatment start. All patients were evaluable for the study endpoints and underwent resection, 23 (96%) within 12 weeks. Grade 3-4 immune-related adverse events occurred in 55% of patients and in 41% of patients when excluding clinically insignificant laboratory abnormalities. Eleven patients (46%) had a pathological complete response (pCR), meeting the secondary efficacy endpoint. Fourteen patients (58%) had no remaining invasive disease (pCR or pTisN0/pTaN0). In contrast to studies with anti-PD1/PD-L1 monotherapy, complete response to ipilimumab plus nivolumab was independent of baseline CD8+ presence or T-effector signatures. Induction of tertiary lymphoid structures upon treatment was observed in responding patients. Our data indicate that combined CTLA-4 plus PD-1 blockade might provide an effective preoperative treatment strategy in locoregionally advanced UC, irrespective of pre-existing CD8+ T cell activity.
journal_name
Nat Medjournal_title
Nature medicineauthors
van Dijk N,Gil-Jimenez A,Silina K,Hendricksen K,Smit LA,de Feijter JM,van Montfoort ML,van Rooijen C,Peters D,Broeks A,van der Poel HG,Bruining A,Lubeck Y,Sikorska K,Boellaard TN,Kvistborg P,Vis DJ,Hooijberg E,Schumacdoi
10.1038/s41591-020-1085-zsubject
Has Abstractpub_date
2020-12-01 00:00:00pages
1839-1844issue
12eissn
1078-8956issn
1546-170Xpii
10.1038/s41591-020-1085-zjournal_volume
26pub_type
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