Ready-to-use ELISA kits are available for the detection of T cell lymphoma breakpoint 1, an alias of the protein, T cell leukemia/lymphoma 1A. The official gene symbol is TCL1A. The protein, with a mass of 13.5 kDa and length of 114 residues, is reported to be cytoplasmic and nuclear. It is a member of the TCL1 family and may be known by other names, including: TCL1, oncogene TCL1, oncogene TCL-1, T-cell lymphoma-1, and T-cell leukemia/lymphoma protein 1A.