21 CFR Part 11 in the European Union

Interaction between Part 11 and EudraLex Annex 11, and how a modern EDC covers both.

Annex 11 as European equivalent

EudraLex Vol. 4 Annex 11 governs computerized systems in GxP. Requirements are functionally equivalent to Part 11: audit trail, validation, access controls, integrity.

Since CTR (EU) 536/2014 and the CTIS portal, electronic traceability requirements are harmonized across the EU. Meeting Part 11 is effectively meeting Annex 11.

When each applies

  • Part 11 only: FDA-bound without European authorization
  • Annex 11 only: European study without FDA submission intent
  • Both: multinational with FDA + EMA authorization (most common)

Dual coverage

  • Audit trail meets Annex 11 cl. 9 and Part 11 §11.10(e)
  • System validation applicable to both frameworks
  • Dual-component e-signature equivalent to both
  • EU residency available on Institutional

FAQ

Does one validation cover both Part 11 and Annex 11?

Functionally yes. The sponsor may request framework-specific documentation but underlying tests are the same.

Need specific documentation?

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