However, in our study, the distribution of BCR CDR3 lengths showed a higher percentage of BCR CDR3 sequences of 14 aa in length in the SSc group than in the Control group (P = 0.029), but a lower percentage of BCR CDR3 sequences of 29 aa (P = 0.039) or 37 aa (P = 0.013) in length in the SSc group. Here, BCR is linked to systemic sclerosis.