Effects of apoptosis inhibition on cell viability and indel frequency in human primary T cells. The gene-editing was achieved through electrotransfer of an RNP targeting the TRAC gene. (A–C) Apoptosis was inhibited with z-devd-fmk treatment; (D–F) apoptosis was inhibited with Ac-devd-cho treatment. (A,D) ICE analysis, showing the outcome of TRAC editing in T cells; (B,E) cell viability measured at 24 h post pulsing; (C,F) Indel within TRAC gene determined at 48 h post pulsing using TIDE analysis. Pulsing condition: 650 V/0.2 cm, 300 µs, 2 pulses, 10 Hz. ns, non-significant. Error bars, SEM; * p < 0.05, Student’s t-test, N = 4.