Abstract OT2-06-01: Solti-1903 HOPE: Real-world clinical practice study to assess the impact of using genomic data on the next treatment decision making-choice in patients with locally advanced or metastatic breast cancer in Spain

Abstract BACKGROUND: Metastatic breast cancer (mBC) remains an incurable disease and is the cause of nearly all deaths related to BC. Next-generation sequencing technologies are allowing the application of personalized targeted molecular therapies, thereby improving outcomes in breast cancer patients. However, they are not routinely used in the clinic and their cost could be a cause of disparity. One strategy to overcome the barriers of implementing NGS in the clinic is to promote the active participation of patients with mBC in the management of their disease and offering free access to these tests. With this in mind, we designed HOPE (SOLTI-1903), a Spanish real-world study where patients lead their inclusion, participation, and follow-up through a digital tool (DT) that guides them in every step of the journey. The ultimate objective of HOPE is to gather real-world data on the utilization of molecular information in the management of mBC and to empower these patients. TRIAL DESIGN: Patients diagnosed with locally advanced or mBC can be included. Basic demographic data, disease characteristics, treatment history and quality of life data are collected by patients through a DT. The study is complemented by a patient empowerment program including informative workshops and precision medicine video-tutorials. Patients are encouraged to involve their physicians in HOPE. A total of 600 patients will be included in Spain. PATIENT JOURNEY: Once patients request participation through the DT, a dedicated team in SOLTI assists them in the subsequent steps while validating that eligibility criteria are met according to patient-provided data. Then, patients receive instructions from SOLTI’s team to attend the nearest partner local laboratory, where they sign the study informed consent form. A metastatic (preferably) or primary archival tumor sample is requested from the patient’s reference hospital and analyzed by FoundationOne®CDx. Patients that are in progression or not receiving active systemic chemo- or radiotherapy undergo a blood draw to receive a Guardant360 analysis. These two NGS tests are offered to all patients, and the blood test is performed even if no tissue is available. The results from the molecular analyses are regularly reviewed by a Molecular Advisory Board (MAB). The MAB, based on its joint experience in clinical oncology, genomics, bioethics, and pathology, may add some advice to these reports via DT, making comments about detected molecular alterations and adding further recommendations for specific treatment options or available CT with targeted therapies and/or additional genetic tests such as germline validation of potentially significant findings. From that moment, patients are requested to record their disease evolution in the DT every 3 months for 2 years. The primary objective is to assess the real-world clinical practice integrating molecular profiling in the Standard of Care management of patients with mBC connected through a DT. Secondary objectives include to i) describe the genetic mutational profile of mBC, ii) estimate the enrollment rate in CT of patients engaged in a patient-centered strategy for molecular tumor assessment, iii) assessing Progression Free Survival, Overall Survival and Quality of Life status among patients enrolled in CT according to the tumor’s genomic profile and iv) evaluate the logistic feasibility of the study. Recruitment started on October 2020. By June 2021, 362 patients had been enrolled. ACKNOWLEDGEMENTS: This study is sponsored by SOLTI and financially supported by Novartis and three non-profit organizations: Asociación Cáncer de Mama Metastásico, Asociación Saray and Fundación Actitud frente al Cáncer. Roche and Guardant Health provide their tests for all patients. Citation Format: Ana Casas, Eva Ciruelos, Mafalda Oliveira, Cristina Saura, Meritxell Bellet, Sonia Pernas, Joaquín Gavilá, Montserrat Muñoz, Maria Vidal, Blanca González-Farré, Juan M. Cejalvo, Rafael López, Ana Vivancos, Marcos Malumbres, Javier Salvador Bofill, Isabel Blancas, Emilio Alba, Valentina Boni, Susana De la Cruz, Elena Galve, Antonia Perelló, Mireia Margelí, Meritxell Soler, Rubén Olivera-Salguero, Helena Masanas, Rosa Olmos, Marga Forns, Pilar Fernández Pascual, Elia Seguí, Tomas Pascual, Aleix Prat. Solti-1903 HOPE: Real-world clinical practice study to assess the impact of using genomic data on the next treatment decision making-choice in patients with locally advanced or metastatic breast cancer in Spain [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr OT2-06-01.