IDC data release v21 - May 2025

IDC data release v21 is live!

As always, you can find detailed data release notes in our documentation: Data release notes | IDC User Guide

v21 in numbers:

  • Files: 4,5784,454 (+174,244)
  • Series: 950,888 (+3,308)
  • Studies: 149,577 (+2,070)
  • Cases: 71,082 (+1,893)
  • Collections: 150 (+1)
  • Disk size: 87.49 TB (+1.94 TB)

The main highlight of this release is the update of the Childhood Cancer Data Initiative Molecular Characterization (CCDI-MCI) collection (see more details about this collection at the collection page here), which now includes 3715 digital pathology slides (up from 1804) for 3582 patients (up from 1733).

To get started with the pathology slides available in this collection, check out this notebook, and see this earlier post on how to access patient-level clinical data with the images: How to access accompanying clinical data for the CCDI-MCI collection?.

Congratulations to the IDC team, and thank you to all data contributors!