RT Journal Article SR Electronic T1 Bone metastases and immunotherapy in patients with advanced non-small-cell lung cancer JF Journal for ImmunoTherapy of Cancer JO J Immunother Cancer FD BMJ Publishing Group Ltd SP 316 DO 10.1186/s40425-019-0793-8 VO 7 IS 1 A1 Landi, Lorenza A1 D’Incà, Federica A1 Gelibter, Alain A1 Chiari, Rita A1 Grossi, Francesco A1 Delmonte, Angelo A1 Passaro, Antonio A1 Signorelli, Diego A1 Gelsomino, Francesco A1 Galetta, Domenico A1 Giannarelli, Diana A1 Soto Parra, Hector A1 Minuti, Gabriele A1 Tiseo, Marcello A1 Migliorino, Maria Rita A1 Cognetti, Francesco A1 Toschi, Luca A1 Bidoli, Paolo A1 Piantedosi, Francovito A1 Calabro’, Luana A1 Cappuzzo, Federico YR 2019 UL http://jitc.bmj.com/content/7/1/316.abstract AB Background Bone metastases (BoM) are a negative prognostic factor in non-small-cell lung cancer (NSCLC). Beyond its supportive role, bone is a hematopoietic organ actively regulating immune system. We hypothesized that BoM may influence sensitivity to immunotherapy.Methods Pretreated non-squamous (cohort A) and squamous (cohort B) NSCLCs included in the Italian Expanded Access Program were evaluated for nivolumab efficacy according to BoM.Results Cohort A accounted for 1588 patients with non-squamous NSCLC, including 626 (39%) with (BoM+) and 962 (61%) without BoM (BoM-). Cohort B accounted for 371 patients with squamous histology including 120 BoM+ (32%) and 251 (68%) BoM- cases. BoM+ had lower overall response rate (ORR; Cohort A: 12% versus 23%, p <  0.0001; Cohort B: 13% versus 22%, p = 0.04), shorter progression free survival (PFS; Cohort A: 3.0 versus 4.0 months, p <  0.0001; Cohort B: 2.7 versus 5.2 months, p <  0.0001) and overall survival (OS; Cohort A: 7.4 versus 15.3 months, p <  0.0001; Cohort B: 5.0 versus 10.9 months, p < 0.0001). Moreover, BoM negatively affected outcome irrespective of performance status (PS; OS in both cohorts: p < 0.0001) and liver metastases (OS cohort A: p < 0.0001; OS Cohort B: p = 0.48). At multivariate analysis, BoM independently associated with higher risk of death (cohort A: HR 1.50; cohort B: HR 1.78).Conclusions BoM impairs immunotherapy efficacy. Accurate bone staging should be included in clinical trials with immunotherapy.Abbreviations:AEAdverse eventALKAnaplastic lymphoma kinaseBoMBone metastasesBRAFSerine/threonine-protein kinase B-RafCIConfidence intervalCRComplete responseEAPExpanded Access ProgramECOGEastern Cooperative Oncology GroupEGFREpidermal growth factor receptorHBVHepatitis B virusHCVHepatitis B virusHIVHuman immunodeficiency virusHRHazard ratioICIImmune checkpoint inhibitorKRASKirsten rat sarcoma viral oncogene homologMDSCMyeloid-derived suppressor cellNSCLCNon-small-cell lung cancerNVNot valuableORRObjective response rateOSOverall survivalPDProgressive diseasePD-1Programmed death-1 receptorPD-L1PD-ligand 1PFSProgression free survivalPRPartial responsePSPerformance statusRECISTResponse Evaluation in Solid TumorsROS1c-ros oncogene 1SDStable diseaseTMBTumor Mutational BurdenTRAETreatment related adverse eventUnkUnknownVEGFVascular endothelial growth factor