CTCAE: Common Terminology Criteria for Adverse Events (CTCAE) v4.0 Viewer.
You can browse all CTCAE 4 Data, and search from full text, bookmark.

Common Terminology Criteria for Adverse Events (CTCAE) v4.0 Viewer (English/Japanese)

You can search, browse and bookmark CTCAE v4.0 by following languages.
・Japanese (JCOG Edition)

[Including Data]
・CTCAE v4.03/MedDRA v12.0 (Japanese description : MedDRA/J v20.1) SEP 12, 2017 revised edition.

What’s New

Version 1.8.0

・Supports iPhone X or later,Dark Mode
・Now you can remove ads from setting menu.
・Upgrade JCOG Database (SEP 12 2017 edition)

App Privacy

The developer, TAKAFUMI MIZUGUCHI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Search History
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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