de Winter, Janneke J. H. https://orcid.org/0009-0009-7901-7510
Ibrahimov, Birtan M.
Verheij, Frances A.
Brinkman, Iris D.
Stuut, Anniek H. G. https://orcid.org/0009-0007-0797-4050
Schonewille, Pleun https://orcid.org/0009-0006-5017-8415
Heijstek, Marloes W. https://orcid.org/0000-0003-1718-7855
van Rhenen, Anna
van der Wagen, Lotte E.
Daenen, Laura G. M. https://orcid.org/0000-0001-9835-3223
Janssen, Anke
Hutten, Tim J. A. https://orcid.org/0000-0002-5353-1740
Kuball, Jürgen https://orcid.org/0000-0002-3914-7806
Leavis, Helen L. https://orcid.org/0000-0001-8720-3684
de Witte, Moniek A. https://orcid.org/0000-0001-7470-2994
Article History
Received: 15 April 2025
Accepted: 27 November 2025
First Online: 3 February 2026
Declarations
:
: All patients provided written informed consent indicating their agreement to participate in the Dutch National ‘IEI’ registry and gave consent for sending their data to EBMT. The informed consent form was approved by the local ethical committee (METC NL40331.078 & METC nr 21–322) at the UMCU. The study adhered to Good Clinical Practice (GCP) protocols and the principles outlined in the Declaration of Helsinki. Clinical trial number: not applicable.
: JK is inventor on multiple patents dealing with gammadelta-TCRs, ligands, and isolation strategies of engineered immune cells. JK is cofounder and shareholder of Gadeta. JK received research, advisor and clinical study support from Miltenyi Biotec. JK received further research support from Novartis and Gadeta. HL received research support from Takeda, Novartis and Sobi. HL received advisor, presentation and moderating fees from Takeda, Novartis, Sobi and Octapharma. MdW received grant support from Leukemiefonds.nl and Oncode Accelerator. MdW received research support from Miltenyi Biotec and Novartis. MdW received speakers fee from AbbVie, GSK, Miltenyi Biotec, Novartis and Takeda. The rest of the authors declare no conflicts of interest.