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Background: Over the last few years, the introduction of newer systemic therapies (e.g. CDKi) significantly changed the treatment paradigm of patients (pts) with MBC. The purpose of this work is to evaluate the impact of CDKi introduction in clinical practice in terms of medical oncology workload. Methods: We examined a consecutive series of 492 pts who received therapy for MBC in Academic Hospital of Udine during two historical cohorts A (2016-2017) and B (2018-2019), respectively before and after the first CDKi approval in Italy. Data about 2020 were not collected due to confounding effect of SARS-CoV-2 pandemic. Pts with no luminal MBC or enrolled in clinical trial were excluded. We performed descriptive analyses to examine any differences in terms of number and type of outpatient visits to the oncology department (i.e. planned visits, unplanned presentations and i.v. treatment sessions) between the two cohorts. Results: We analyzed a total number of 2,645 oncology activities deriving from 42 pts (cohort A) and 57 pts (cohort B) who started first line treatment for luminal MBC. Median age was 66 and 70 years respectively. In the first group, pts receiving chemotherapy were 23.8% and those treated with CDKi were 7,14%. In the second group, chemotherapy was administered in 22.8% of pts and CDKi in 49.12%. In cohort A, number of planned visits, unplanned presentations and i.v. treatment sessions were respectively 643, 82 and 418. In cohort B, number of planned visits, unplanned presentations and treatment sessions were 892, 114 and 496. During the period of observation (two years), for each pts mean number of planned visits were 15,30 (cohort A) vs 15,64 (cohort B), mean number of unplanned presentations were 1,95 (cohort A) vs 2 (cohort B), treatment i.v. sessions were 9,9 (cohort A) vs 8,7 (cohort B). Conclusions: With the limits of a retrospective analysis, no differences were found between two cohorts of pts. Notably, there was a slight decrease of i.v. treatment sessions after CDKi introduction. Other analysis are ongoing to evaluate the workload in terms of instrumental and blood chemistry tests. This data further support the handy use of this drugs into clinical practice. Legal entity responsible for the study: Azienda Sanitaria Universitaria Friuli Centrale (ASUFC) Funding: Has not received any funding. Disclosure: M. Mansutti: Financial Interests, Institutional, Advisory Board: AstraZeneca;Financial Interests, Institutional, Advisory Board, invited speaker: Novartis;Financial Interests, Institutional, Advisory Board, invited speaker: Eli Lilly;Financial Interests, Institutional, Advisory Board, invited speaker: Pfizer;Financial Interests, Institutional, Advisory Board: MSD Italia;Financial Interests, Institutional, Advisory Board, invited speaker: EISAI;Financial Interests, Institutional, Advisory Board: Pierre Fabre;Financial Interests, Institutional, Advisory Board: Roche;Financial Interests, Institutional, Advisory Board: Celgene. All other authors have declared no conflicts of interest.

Background Cancer multidisciplinary team meetings (MDMs) are commonly acknowledged as a good clinical practice. One of the roles of MDMs is to identify the best diagnostic and therapeutic strategies for patients (pts) with new diagnosis of early breast cancer (EBC). In this setting, the purpose of the study was to define whether there was agreement between the planned program (i.e. MDMs-based decision) and that actually applied (i.e. actual therapeutic choice, ATC). In addition, the study explored factors associated with discordance. Methods We conducted a monocentric retrospective study of a consecutive series of 291 pts with new diagnosis of EBC, discussed at MDMs at the University Hospital of Udine (Italy), from January 2017 to June 2018. Results Median age was 62 years (range 27-88 years). Among invasive EBC patients, the most frequent phenotype was luminal-A (38%), followed by luminal-B (33%), HER2-positive (12%) and triple negative (5%). Thirty-four pts (12%) had diagnosis of in situ carcinoma (DCIS). Median time from MDMs discussion to first oncological examination was two weeks. Rate of discordance between MDMs-based decision and final choice, during face to face consultation with the oncologist, was 15.8% (46/291). Among cases with discordance, 19 pts (41.3%) had age > 70 years; 8 pts (17%) had a diagnosis of DCIS, 13 pts (28%) luminal-B carcinoma, 12 pts (26%) luminal-A, 9 pts (20%) HER2-positive and 4 pts (9%) triple negative EBC. The most frequent reason for changing the MDMs-based program was clinical decision by the oncologist at the first evaluation (87%). Follow-up was preferred to the chemotherapy proposed within the MDMs by 15% of pts, and to the endocrine therapy in 39% cases (among these, 44.5% had diagnosis of DCIS). In our study 16/46 pts (35%) had a therapeutic change from chemotherapy to endocrine therapy: among these pts, 7/16 had a luminal-B and 6/16 had a HER2-positive disease. Further analysis aiming at evaluating variables which could predict discordance between MDMs proposal and face to face oncological consultation are ongoing. Conclusions The results of our study could be useful for enhance the role of MTD and identify unmet needs in decision making process in EBC. Legal entity responsible for the study The authors. Funding Has not received any funding. Disclosure All authors have declared no conflicts of interest.

Background High BMI is associated with better survival in metastatic melanoma patients (MM pts), while sarcopenia is linked to poorer outcome in pts with stage III. The aim of this study was to examine the prognostic impact of body-mass index (BMI), baseline sarcopenia, loss of skeletal muscle mass (LSMM) on overall survival (OS) in MM pts who received immunotherapy (IT). Methods The retrospective series included 42 consecutive MM pts (Jan 2011-Dec 2018) treated with IT in a single referral center. Sarcopenia was defined according to Prado’s criteria. Skeletal muscle index (SMI) was calculated as cross-sectional-area of muscle (cm2), using CT-scan, at the L3 level divided by the square of the height (m2). Early LSMM, during IT, was defined as a decrease in SMI > =10% from baseline at first evaluation. BMI was calculated as weight (kg) divided by the square of height (m2) and categorized according to standard WHO definitions. Weight loss was analyzed as continuous variable. Results At baseline, 27 pts (64,3%) were male, 26 pts (61.9%) were =25. Out of 42 pts, 30 (71.4%) had a CT-scan at first evaluation, and 30% of them had an early LSMM. Median OS was 11.38 months. Both in univariate and multivariate analysis, ECOG PS > =1, and early LSMM > =10% were significantly associated with worse OS. Conversely, pts with weight loss had better OS (Table). Table . 1367P OS univariate analysis OS multivariate analysis Factors HR p 95% Confidence Interval HR p 95% Confidence Interval PS ECOG³1 3.02 0.01 (1.29-7.08) 3.99 0.043 (1.04-15.31) Weight loss 0.88 0.03 (0.78-0.98) 0.85 0.02 (0.74-0.97) Early LSMM > =10% 4.24 0.006 (1.50-11.97) 3.09 0.04 (1.04-9.22) Conclusions Early LSMM > =10% and ECOG PS > =1 may negatively influence the outcome of MM pts treated with IT. Further prospective studies are needed to confirm these data. Legal entity responsible for the study Maria Grazia Vitale. Funding Has not received any funding. Disclosure All authors have declared no conflicts of interest.