Supplemental material, sj-docx-1-tam-10.1177_17588359231157641 for The AGAMENON-SEOM model for prediction of survival in patients with advanced HER2-positive oesophagogastric adenocarcinoma receiving first-line trastuzumab-based therapy by Paula Jimenez-Fonseca, Victoria Foy, Sophie Raby, Alberto Carmona-Bayonas, Lola Macía-Rivas, Virginia Arrazubi, Diego Cacho Lavin, Raquel Hernandez San Gil, Ana Custodio, Juana María Cano, Ana Fernández Montes, Oriol Mirallas, Ismael Macias Declara, Rosario Vidal Tocino, Laura Visa, María Luisa Limón, Paola Pimentel, Nieves Martínez Lago, Tamara Sauri, Marta Martín Richard, Monserrat Mangas, Mireia Gil Raga, Aitana Calvo, Pablo Reguera, Mónica Granja, Alfonso Martín Carnicero, Carolina Hernández Pérez, Paula Cerdá, Lucía Gomez Gonzalez, Francisco Garcia Navalon, Vilma Pacheco Barcia, David Gutierrez Abad, Maribel Ruiz Martín, Jamie Weaver, Wasat Mansoor and Javier Gallego in Therapeutic Advances in Medical Oncology