TRBV20-1 and pleural tuberculosis: Another study used the high-throughput deep sequencing methods to analyze the TCRB repertoires of an untreated pleural tuberculosis patient, and the results indicated that the TRBV20-1 family and TRBV20-1/TRBJ1-5 gene combination had a dominant expression in PEMCs, but not in PBMCs of the patient (56).