From:  Bi-, tri-, and multi-specific T-cell engager therapies in glioblastoma: a decade of preclinical innovation

 Matrix heatmap summarizing whether included studies addressed the four key barriers to T-cell engager therapy in GBM.

StudyAntigen heterogeneityImmune escapeBBBTME
Choi et al. [25], 2025××
Zannikou et al. [24], 2025×
Brosius et al. [16], 2024××
Park et al. [21], 2024×
Baugh et al. [1], (2024×××
Park et al. [22], 2023×
Bhojnagarwala et al. [15], 2022××
Huynh et al. [28], 2022×××
Yin et al. [11], 2022××
Li et al. [29], 2021××
Pituch et al. [18], 2021××
Arnone et al. [30], 2021×
Gardell et al. [19], 2020××
Choi et al. [31], 2019

Green and √ = barrier addressed; red and × = barrier not addressed. GBM: glioblastoma multiforme; BBB: blood-brain barrier; TME: tumor microenvironment.