RT Journal Article SR Electronic T1 Nivolumab and sunitinib combination in advanced soft tissue sarcomas: a multicenter, single-arm, phase Ib/II trial JF Journal for ImmunoTherapy of Cancer JO J Immunother Cancer FD BMJ Publishing Group Ltd SP e001561 DO 10.1136/jitc-2020-001561 VO 8 IS 2 A1 Javier Martin-Broto A1 Nadia Hindi A1 Giovanni Grignani A1 Javier Martinez-Trufero A1 Andres Redondo A1 Claudia Valverde A1 Silvia Stacchiotti A1 Antonio Lopez-Pousa A1 Lorenzo D'Ambrosio A1 Antonio Gutierrez A1 Herminia Perez-Vega A1 Victor Encinas-Tobajas A1 Enrique de Alava A1 Paola Collini A1 Maria Peña-Chilet A1 Joaquin Dopazo A1 Irene Carrasco-Garcia A1 Maria Lopez-Alvarez A1 David S Moura A1 Jose A Lopez-Martin YR 2020 UL http://jitc.bmj.com/content/8/2/e001561.abstract AB Background Sarcomas exhibit low expression of factors related to immune response, which could explain the modest activity of PD-1 inhibitors. A potential strategy to convert a cold into an inflamed microenvironment lies on a combination therapy. As tumor angiogenesis promotes immunosuppression, we designed a phase Ib/II trial to test the double inhibition of angiogenesis (sunitinib) and PD-1/PD-L1 axis (nivolumab).Methods This single-arm, phase Ib/II trial enrolled adult patients with selected subtypes of sarcoma. Phase Ib established two dose levels: level 0 with sunitinib 37.5 mg daily from day 1, plus nivolumab 3 mg/kg intravenously on day 15, and then every 2 weeks; and level −1 with sunitinib 37.5 mg on the first 14 days (induction) and then 25 mg per day plus nivolumab on the same schedule. The primary endpoint was to determine the recommended dose for phase II (phase I) and the 6-month progression-free survival rate, according to Response Evaluation Criteria in Solid Tumors 1.1 (phase II).Results From May 2017 to April 2019, 68 patients were enrolled: 16 in phase Ib and 52 in phase II. The recommended dose of sunitinib for phase II was 37.5 mg as induction and then 25 mg in combination with nivolumab. After a median follow-up of 17 months (4–26), the 6-month progression-free survival rate was 48% (95% CI 41% to 55%). The most common grade 3–4 adverse events included transaminitis (17.3%) and neutropenia (11.5%).Conclusions Sunitinib plus nivolumab is an active scheme with manageable toxicity in the treatment of selected patients with advanced soft tissue sarcoma, with almost half of patients free of progression at 6 months. Trial registration number NCT03277924.