PRECISION is an initiative from the Belgian Society of Medical Oncology (BSMO) in collaboration with several stakeholders, encompassing four programs that aim to boost genomic and clinical knowledge with the ultimate goal to offer patients with metastatic solid tumors molecularly guided treatments. The PRECISION 1 study has led to the creation of a clinico-genomic database. The Belgian Approach for Local Laboratory Extensive Tumor Testing (BALLETT) and GeNeo studies will increase the number of patients with advanced cancer that have comprehensive genotyping of their cancer. The PRECISION 2 project consists of investigator-initiated phase II studies aiming to provide access to a targeted drug for patients whose tumors harbor actionable mutations in case the matched drug is not available through reimbursement or clinical trials in Belgium. ; This work was supported by grants from the 1 study and grants from the Belgian Foundation against Cancer and Kom op Tegen Kanker to the PRECISION 1 and 2 studies and the Biltema Foundation (no grant number). GeNeo is funded by a grant from Roche (no grant number). BALLETT is funded by grants from Illumina and OncoDNA (no grant number).