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Clinical trials

The European Union Clinical Trials Register   allows you to search for protocol and results information on:
  • interventional clinical trials that were approved in the European Union (EU)/European Economic Area (EEA) under the Clinical Trials Directive 2001/20/EC
  • clinical trials conducted outside the EU/EEA that are linked to European paediatric-medicine development

    • EU/EEA interventional clinical trials approved under or transitioned to the Clinical Trial Regulation 536/2014 are publicly accessible through the
    Clinical Trials Information System (CTIS).

    The EU Clinical Trials Register currently displays   44377   clinical trials with a EudraCT protocol, of which   7389   are clinical trials conducted with subjects less than 18 years old.   The register also displays information on   18700   older paediatric trials (in scope of Article 45 of the Paediatric Regulation (EC) No 1901/2006).

    Phase 1 trials conducted solely on adults and that are not part of an agreed paediatric investigation plan (PIP) are not publicly available (see Frequently Asked Questions ).  
     
    Examples: Cancer AND drug name. Pneumonia AND sponsor name.
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    Search Tips: Under advanced search you can use filters for Country, Age Group, Gender, Trial Phase, Trial Status, Date Range, Rare Diseases and Orphan Designation. For these items you should use the filters and not add them to your search terms in the text field.
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    Clinical Trial Results:
    Omission of surgery and sentinel lymph node dissection in clinically low-risk HER2positive breast cancer with high HER2 addiction and a complete response following standard anti- HER2-based neoadjuvant therapy (ELPIS trial)

    Summary
    EudraCT number
    		 2019-005019-18
    Trial protocol
    		 ES  
    Global completion date

    Paediatric regulatory details
    Is the trial part of an agreed EMA paediatric investigation plan?
    Is the trial in scope of article 45 of Regulation (EC) No 1901/2006?
    Is the trial in scope of article 46 of Regulation (EC) No 1901/2006?

    Results information
    Results version number
    		 v1(current)
    This version publication date
    01 Feb 2026
    First version publication date
    01 Feb 2026
    Other versions
    Summary report(s)
    		 ELPIS_Submission_note
    ELPIS_Statistical Analysis Report (SAR)
    Note: The legislation allows summary attachments to be posted instead of the full dataset for this trial. Refer to Commission Guideline 2012/C 302/03 for further information.
    For support, Contact us.
    The status and protocol content of GB trials is no longer updated since 1 January 2021. For the UK, as of 31 January 2021, EU Law applies only to the territory of Northern Ireland (NI) to the extent foreseen in the Protocol on Ireland/NI. Legal notice
    As of 31 January 2023, all EU/EEA initial clinical trial applications must be submitted through CTIS . Updated EudraCT trials information and information on PIP/Art 46 trials conducted exclusively in third countries continues to be submitted through EudraCT and published on this website.

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