Fig. 1

Overview of the Quartet Data Portal. a Reference materials, multiomics data, quality assessment, and reference datasets constitute the core of the Quartet Data Portal, a user-friendly web-server for requesting samples, accessing to multiomics data, evaluating quality of submitted data, and visualizing reference datasets. b The Quartet Data Portal uses a “distribution-collection-evaluation-integration” closed-loop workflow. Continuous requests for reference materials by the community will generate large amounts of data from the Quartet reference samples under different platforms and labs. This helps improve the quality control metrics and analysis pipelines, as well as to gradually improve the reliability and application scope of the reference materials and datasets