Table 3

Predominant γδ T cell subset and arthritis

Patient No	Persistent expansion of γδ T cells	Predominant TCRγδ V genes	Arthritis	Deforming arthritis	Erosions	RF
Oligo, oligoarthritis; poly, polyarthritis.
Presence or absence of erosions was determined by evaluation of roentgenograms of affected joints by a board certified rheumatologist or a trained radiologist, or both. RF+, low titre by latex fixation test (<1/160); RF++, high titre by latex fixation (>1/640).
1	+	Vγ1⁺/Vδ2⁺	Poly	−	None	++
2	+	Vγ2⁺/Vδ2⁺	Oligo	−	None	+
3	+	Vγ1⁺/Vδ2⁻/Vδ1⁻	Oligo	−	None	−
4	−	Polyclonal	Oligo	−	None	− −+
5	−	Polyclonal	Poly	−	None	−
6	−	Vγ1⁺/Vδ1⁺	Poly	++	Severe	++