Two is better than one: Advancing gene therapy protocols for enhanced safety and efficacy.

Hardouin, Giulia; Miccio, Annarita · Cell Stem Cell · 2025

editorial · Level V

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Abstract

In this issue of Cell Stem Cell, two complementary studies from Zeng et al.<sup>1</sup> and Demirci et al.<sup>2</sup> improve the efficacy of gene therapy for β-hemoglobinopathies using multiplex CRISPR-Cas9 editing. The authors also optimize editing and conditioning protocols to reduce risks associated with current gene therapy procedures.

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