Table 1 Clinical and therapeutic features of the patients

Pt	Diag	Sex	Disease duration (months)	Infliximab			Etanercept				Adalimumab
Pt	Diag	Sex	Disease duration (months)	Concomitant DMARD treatment	Treatment duration (months)	Reason for disconuation	Concomitant DMARD treatment	Treatment duration (months)	Currently on treatment	Reason for disconuation	Concomitant DMARD treatment	Treatment duration (months)	Currently on treatment	Reason for disconuation
1	AS	F	48	MTX	12	IRR	MTX	21	Yes	—	—	—	—	—
2	AS	F	300	—	7	IRR	—	31	Yes	—	—	—	—	—
3	AS	F	288	—	20	IRR	—	18	Yes	—	—	—	—	—
4	AS	M	132	—	11	LoE	—	32	Yes	—	—	—	—	—
5	AS	F	144	—	24	LoE	SSZ	11	Yes	—	—	—	—	—
6	AS	M	60	SSZ	12	LaE	SSZ	3	No	LaE	—	—	—	—
7	PsA	F	96	MTX	5	IRR	LFN	33	Yes	—	—	—	—	—
8	PsA	F	192	—	3	IRR	—	36	Yes	—	—	—	—	—
9	PsA	M	60	MTX	12	LoE	—	32	Yes	—	—	—	—	—
10	PsA	M	84	Cs	36	LoE	—	12	Yes	—	—	—	—	—
11	PsA	F	372	MTX	27	LoE	—	24	Yes	—	—	—	—	—
12	PsA	M	72	—	25	LoE	—	18	Yes	—	—	—	—	—
13	PsA	F	72	MTX	10	AE*	—	24	Yes	—	—	—	—	—
14	PsA	F	228	MTX	7	Other†	—	6	Yes	—	—	—	—	—
15	PsA	M	72	MTX	6	IRR	Cs	12	No	LoE	Cs	6	No	LaE
16	PsA	F	336	—	8	LoE	—	3	No	LaE	—	4	No	LaE
17	PsA	F	60	—	—	—	—	3	—	IRR	—	9	Yes	—
18	PsA	F	60	—	—	—	MTX	12	—	LoE	MTX	3	No	LaE
19	PsA	F	60	—	—	—	MTX	6	—	LoE	MTX	16	Yes	—
20	PsA	F	24	—	—	—	MTX	12	—	LoE	MTX	3	Yes	—
21	PsA	F	65	—	—	—	—	3	—	AE‡	—	16	Yes	—
				Etanercept			Infliximab
22	AS	M	36	—	6	LoE	MTX	16	Yes	—	—	—	—	—

Concom, concomitant; Cs, ciclosporin A; Diag, diagnosis; Discon, discontinuation; IRR, infusion/injection related reaction; LaE, lack of efficacy; LFN, leflunomide; LoE, loss of efficacy; MTX, methotrexate; SSZ, salazopyrine.
*Autoimmune hepatitis; †surgery for hip replacement; ‡hypertransaminasaemia.