RT Journal Article T1 Systemic therapies in advanced epithelioid haemangioendothelioma: A retrospective international case series from the World Sarcoma Network and a review of literature. A1 Frezza, Anna M A1 Ravi, Vinod A1 Lo Vullo, Salvatore A1 Vincenzi, Bruno A1 Tolomeo, Francesco A1 Chen, Tom Wei-Wu A1 Teterycz, Pawel A1 Baldi, Giacomo G A1 Italiano, Antoine A1 Penel, Nicolas A1 Brunello, Antonella A1 Duffaud, Florance A1 Hindi, Nadia A1 Iwata, Shintaro A1 Smrke, Alannah A1 Fedenko, Alexander A1 Gelderblom, Hans A1 Van Der Graaf, Winette A1 Vozy, Aurore A1 Connolly, Elizabeth A1 Grassi, Massimiliano A1 Benjamin, Robert S A1 Broto, Javier-Martin A1 Grignani, Giovanni A1 Jones, Robin L A1 Kawai, Akira A1 Tysarowski, Andrzej A1 Mariani, Luigi A1 Casali, Paolo G A1 Stacchiotti, Silvia K1 anthracycline K1 chemotherapy K1 epithelioid haemangioendothelioma K1 interferon K1 paclitaxel K1 pazopanib AB This observational, retrospective effort across Europe, US, Australia, and Asia aimed to assess the activity of systemic therapies in EHE, an ultra-rare sarcoma, marked by WWTR1-CAMTA1 or YAP1-TFE3 fusions. Twenty sarcoma reference centres contributed data. Patients with advanced EHE diagnosed from 2000 onwards and treated with systemic therapies, were selected. Local pathologic review and molecular confirmation were required. Radiological response was retrospectively assessed by local investigators according to RECIST. Progression free survival (PFS) and overall survival (OS) were estimated by Kaplan-Meier method. Overall, 73 patients were included; 21 had more than one treatment. Thirty-three patients received anthracyclines regimens, achieving 1 (3%) partial response (PR), 25 (76%) stable disease (SD), 7 (21%) progressive disease (PD). The median (m-) PFS and m-OS were 5.5 and 14.3 months respectively. Eleven patients received paclitaxel, achieving 1 (9%) PR, 6 (55%) SD, 4 (36%) PD. The m-PFS and m-OS were 2.9 and 18.6 months, respectively. Twelve patients received pazopanib, achieving 3 (25%) SD, 9 (75%) PD. The m-PFS and m-OS were.2.9 and 8.5 months, respectively. Fifteen patients received INF-α 2b, achieving 1 (7%) PR, 11 (73%) SD, 3 (20%) PD. The m-PFS and m-OS were 8.9 months and 64.3, respectively. Among 27 patients treated with other regimens, 1 PR (ifosfamide) and 9 SD (5 gemcitabine +docetaxel, 2 oral cyclophosphamide, 2 others) were reported. Systemic therapies available for advanced sarcomas have limited activity in EHE. The identification of new active compounds, especially for rapidly progressive cases, is acutely needed. YR 2021 FD 2021-03-13 LK http://hdl.handle.net/10668/17345 UL http://hdl.handle.net/10668/17345 LA en DS RISalud RD Apr 6, 2025