INS and type 1 diabetes mellitus: oxPTM-INS-Ab were more common in progr-T1D children than in NP-AAB+ children, with respective reactivity to •OH-INS in 82.6% (19/23) vs 19% (6/32) (p < 0.0001) and reactivity to HOCl-INS in 82.6% (19/23) vs 40.6% (13/32) (p = 0.0024) (Fig. 1b–d).