Der trispezifische T-Zell-Engager ISB 2001 zeigt eine starke Tumorzytotoxizität und überwindet Immun-Escape-Mechanismen von Zellen des multiplen Myeloms

Abstract:
>Despite recent advances in immunotherapies targeting single tumor-associated antigens, patients with multiple myeloma eventually relapse. ISB 2001 is a CD3+ T cell engager (TCE) co-targeting BCMA and CD38 designed to improve cytotoxicity against multiple myeloma. Targeting of two tumor-associated antigens by a single TCE resulted in superior cytotoxic potency across a variable range of BCMA and CD38 tumor expression profiles mimicking natural tumor heterogeneity, improved resistance to competing soluble factors and exhibited superior cytotoxic potency on patient-derived samples and in mouse models. Despite the broad expression of CD38 across human tissues, ISB 2001 demonstrated a reduced T cell activation profile in the absence of tumor cells when compared to TCEs targeting CD38 only. To determine an optimal first-in-human dose for the ongoing clinical trial (NCT05862012), we developed an innovative quantitative systems pharmacology model leveraging preclinical data, using a minimum pharmacologically active dose approach, therefore reducing patient exposure to subefficacious doses of therapies.

I like this paper because of how the antibody was designed shown in [Figure 1](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs43018-024-00821-1/MediaObjects/43018_2024_821_Fig1_HTML.png?as=webp)