G2B: an optimized lentiviral vector with enhanced titer and β-globin expression for improved β-thalassemia gene therapy. - Gao ZY; Yang ZX; Deng DH; Zhang F; Yu B; Zhang YY; Lv X; Nakamura Y; Gong A; Cheng T; Zhang JP; Zhang XB (Blood science (Baltimore, Md.), 2025)