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European Union
As of 31 January 2023, all new initial clinical trial applications in the European Union (EU)/European Economic Area (EEA) must be submitted through CTIS, including the addition of EU/EEA countries to EudraCT trials.

For the United Kingdom, as of 1 January 2021, European Union law applies only to the territory of Northern Ireland (NI) to the extent foreseen in the Protocol on Ireland / NI.

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