label: Abnormal TCR repertoire
label_lc: abnormal tcr repertoire
description: Abnormal distribution of the TCR repertoire expressed on T cells. This usually means oligoclonality (fewer TCR clonotypes compared to a healthy age-matched control) or monoclonality (one dominant TCR clone detected). This may be measured through different methods depending on the lab, but commonly include TCR spectratyping or TCRB CDR3 sequencing.