Background
Hospital-Based Cancer Registries (HBCRs) are essential sources for cancer surveillance and health system planning, particularly in low- and middle-income countries (LMICs), where population-based data may be limited or delayed. In Brazil, the State of São Paulo maintains an extensive network of HBCRs coordinated by the São Paulo Oncocenter Foundation (FOSP). Advancing the analytical capacity and transparency of HBCRs data is essential to support evidence-informed cancer control policies.
 
Objectives
This project aims to develop and implement an advanced, integrated digital platform for the management, analysis, and visualization of HBCR data from São Paulo State (Integra-RHC/SP), strengthening cancer surveillance, supporting health system management, research in oncology and usability to directly inform public health decision-making and cancer-related policies.

Methods
Integra-RHC/SP is a collaborative initiative between the A.C.Camargo Cancer Center and the Directorate of Information and Epidemiology of the FOSP, funded by the São Paulo Research Foundation (FAPESP), process number 2024/15329-2, to be developed between 2025 and 2029. The platform will contribute to modernizing the existing HBCR information system by migrating it to an online environment supported by a dedicated secure server and robust data architecture. Artificial intelligence (AI) techniques will be applied to automate data consolidation, validation, and quality control processes, enabling near–real-time data availability. Interactive, web-based dashboards will be developed to provide real-time indicators on data quality, epidemiological and clinical profiles, geospatial analyses, and instant survival estimates. In addition, AI-based tools will be implemented to support query-based access to information and facilitate the use of registry data by diverse audiences.

Results
The platform is expected to enable data analysis and the comparative assessment of HBCRs in the State of São Paulo at different levels, including the FOSP and other managers from the State Department of Health; hospitals (cancer registrars, oncology coordinators, and clinical directors); researchers; journalists; and the general population. Expected outcomes include increased use of HBCRs data by hospital and public health managers, growth in scientific output, and expanded public access to cancer information. The initiative is also expected to contribute to continuous improvement of cancer care within the Brazilian Unified Health System (SUS) and to establish the platform as a core source of cancer epidemiology data in the state.

Conclusions/Implications
Integra-RHC/SP will strengthen cancer surveillance and evidence-based policymaking in São Paulo State, promoting transparency, innovation, and efficient use of oncological data. The project represents a scalable model for LMIC settings, integrating technology, institutional collaboration, and capacity building to improve cancer control and health system performance.

Graphic summary