did not reach statistical significanceP < 0.0001
All CA mutants showed impaired transduction efficiencies in CD4 + T cells, in which CypA is an LV promoting factor, despite similar infectivity as the wild-type (WT) vector in 293T cells ( Supplementary Table S1 ) ( Figure 6a , white bars, mutants versus WT, P < 0.0001 for all except A92E which did not reach statistical significance).