Background: VATS is currently the most popular form of access for lung cancer resection in the UK. However, there is limited comparative information from high quality randomised controlled trials and no information on early oncologic outcomes for quality assurance for a minimal access approach. VIOLET is the largest randomised trial conducted to date to compare clinical efficacy, safety and oncologic outcomes of VATS versus open surgery for lung cancer. Method: VIOLET is a parallel group randomised trial conducted across 9 UK thoracic surgery centres. Participants with known or suspected primary lung cancer were randomised in a 1:1 ratio to VATS (one to four ports) or open lobectomy. Randomisation was stratified by surgeon. Patients within clinical stage cT1-3, N0-1 and M0 using TNM 8 with disease suitable for VATS or open surgery were eligible to join the trial. We report on early outcomes in the period from randomisation to hospital discharge after surgery. Result: From Jul 2015 to Feb 2019, 2,109 patients were screened to randomise 503 participants to VATS (n¼247) or open (n¼256) lobectomy. The mean age (SD) was 69 (8.8) years and 249 (49.5%) were male. Baseline clinical T category was cT1 333 (67.3%), cT2 125 (25.2%), cT3 37 (7.5%) with cN0 466 (94%) and cN1 30 (6%). Lobectomy was undertaken in 221 (89.5%) patients randomised to VATS and 232 (90.6%) patients randomised to open surgery. The in-hospital mortality rate was 1.4% (7/502) and the conversion rate from VATS to open was 5.7% (14/246) with the main reasons listed as pleural adhesions (n¼4) and bleeding (n¼4). There were no differences in R0 resection; which was 98.8% ( 218/223) in the VATS group and 97.4% (228/234) in the open group; P¼0.839 or in nodal upstaging from cN0/1 to pN2 disease which was observed in 6.2% (15/244) of the VATS group and 4.8% (12/252) of the open group; P¼0.503. The median (visual analogue) pain score was 4 (interquartile range, IQR 2 to 5) in both groups on day one with 3 (1 to 5) in the VATS group and 4 (2 to 5) in the open group on day two. A significant reduction of overall in-hospital complications was observed in patients receiving VATS at 32.8% (81/247) compared to open 44.3% (113/255) surgery; P¼0.008 without any difference in serious adverse events between the two groups, which was 8.1% (20/247) for VATS and 7.8% (20/255) for open surgery; P¼0.897. Patients randomised to VATS had a shorter median (IQR) length of stay of 4 (3 to 7) versus 5 (3 to 8) days compared to patients randomised to open surgery, P¼0.008. Conclusion:In early stage lung cancer, VATS lobectomy is associated with significantly lower in-hospital complications and shorter length of stay compared to open lobectomy. This was achieved without any compromise to early oncologic outcomes (pathologic complete resection and upstaging of mediastinal lymph nodes) nor any difference in serious adverse events in the early post-operative period.

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Background Olaparib is a potent poly(ADP-ribose) polymerase (PARP) inhibitor, with first-in-class approval (400 mg capsules BID) for BRCA-mutated advanced ovarian cancer. Olaparib was recently found to be superior compared with chemotherapy in HER2-negative gBRCAm MBC in the Phase III OlympiAD trial. Olaparib induces DNA damage and genomic instability in gBRCAm tumors, which is hypothesized to result in enhanced immunogenicity. Here, we assess if a combination of olaparib and an anti-programmed cell death ligand-1 (PD-L1) agent, durvalumab, leads to enhanced antitumor activity in one of the four cohorts (NCT02734004). Methods Individuals with deleterious gBRCA1 or BRCA2 mutations and HER2-negative MBC were eligible. Patients with prior platinum therapy were allowed to enter if they had not experienced disease progression on platinum. No more than two prior lines of chemotherapy were allowed for metastatic disease, and patients with hormone receptor (HR) positive disease had to have at least one line of prior endocrine therapy. Concomitant use of endocrine therapy was not allowed. All patients received olaparib tablets 300 mg PO BID for a 4-week run-in, followed by a combination of olaparib 300 mg PO BID and durvalumab 1.5 g IV q 4 weeks. The combination was continued until progressive disease (PD) by RECIST 1.1 criteria. Tumor assessments were done at baseline, 4 weeks and every 8 weeks thereafter. The primary endpoint was disease control rate (DCR) at 12 weeks, and safety and tolerability of the combination. The secondary endpoints included DCR at 28 weeks, objective response rate, duration of response, progression-free survival (PFS) and overall survival. Biomarker endpoints included PD-L1 expression and evaluation of tumor infiltrating lymphocytes. Olaparib monotherapy has previously demonstrated a median PFS (mPFS) of 6 months in this patient population, and addition of durvalumab was predicted to increase the mPFS to 7.5 months, corresponding to a target DCR of 75% at 12 weeks. This was achievable by enrolling 30 patients using a Bayesian predictive probability design. Results of the first 25 patients are presented. Results Median age was 46 years (range 29−66); 11 and 14 patients had BRCA1 and BRCA2 mutations, respectively; 13 patients had HR positive disease, and nine had previously received platinum therapy. Median number of prior chemotherapy lines was 1 (range 0-4). Grade 3 or higher adverse events (AEs) were anemia (8%), neutropenia (8%), hemolysis (4%), dyspnea (4%), pancreatitis (4%), fatigue (4%), lymphopenia (4%) and leukopenia (4%). There was one grade 5 AE (dyspnea), which was attributed to disease progression. Observed DCR at 12 weeks was 80%. Eight confirmed responses and five unconfirmed responses were seen. The updated results from primary and secondary endpoints, including DCR at 28 weeks, as well as biomarker and PK data, will be presented. Conclusions The combination of olaparib and durvalumab was well tolerated, with no apparent overlapping toxicities. The efficacy of the combination at an early time point reached the target DCR in gBRCAm HER2-negative MBC, and warrants further investigation. Citation Format: Domchek SM, Postel-Vinay S, Bang Y-J, Park YH, Alexandre J, Delord J-P, Italiano A, You B, Bastian S, Krebs M, Wang D, Waqar S, Angell H, Learoyd M, Chang S-C, Gresty C, Herbolsheimer P, Kaufman B. An open-label, multitumor, phase II basket study of olaparib and durvalumab (MEDIOLA): Results in germline BRCA-mutated (gBRCAm) HER2-negative metastatic breast cancer (MBC) [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr PD6-11.