TFRC and rheumatoid arthritis: The results of the present study suggest that the proportions of Tfh-like and PD-1+ Tfh-like cells are increased in RA, whereas those of Treg, Tfr-like, and mTfr-like cells are decreased, leading to imbalance in the Tfh-like/Treg, Tfh-like/Tfr-like, and Tfh-like/mTfr-like cell ratios.