Session Information
Date: Tuesday, October 23, 2018
Title: Vasculitis Poster III: Immunosuppressive Therapy in Giant Cell Arteritis and Polymyalgia Rheumatica
Session Type: ACR Poster Session C
Session Time: 9:00AM-11:00AM
Background/Purpose: GiACTA study is a randomized, phase III controlled clinical trial of tocilizumab (TCZ) in giant cell arteritis (GCA) (1,2). Our aim was to compare GiACTA trial data from those of a national multicenter series of 134 patients with GCA from the clinical practice.
Methods: In the GiACTA study the diagnosis of GCA was established by the ACR modified criteria, in our clinical practice series it was established by ACR criteria, positive biopsy of temporal artery and/or presence of imaging techniques consistent with LVV in patients with cranial symptoms of GCA. In the GiACTA trial TCZ was given subcutaneously (162 mg every 1 or 2 weeks) while in the clinical practice study TCZ was used at standard IV dose (8 mg/kg/month) and subcutaneously (162 mg/week). Quantitative variables were expressed as mean±SD and they were compared by the Student’s t-test. Dichotomous variables were expressed as percentages and compared using the chi-square test.
Results: We did a comparative study between GiACTA trial (overall n=251 and only relapsing n=132) and our clinical practice series (overall n=134). At TCZ onset, in the clinical practice series (n=134) there were a significantly greater (TABLE): a) mean age at ACG diagnosis, b) polymyalgia rheumatica and visual affection frequency, c) ESR and CRP, and d) previous conventional immunosuppressants (mainly MTX). There was also a non-statistically significant difference, in terms of achieving sustained remission and developing severe infections. The mean dose of prednisone at the TCZ onset was lower in patients from the clinical practice.
Conclusion: Patients receiving TCZ in the clinical practice study have several baseline clinical and laboratory differences when compared to those included in the GiACTA trial. Patients of clinical practice were older, with a longer evolution time of disease. At TCZ onset were more symptomatic and had elevated levels of ESR and CRP, as well as, they had received more previous immunosuppressant agents.
TABLE
|
GiACTA overall (n=251) |
GiACTA (only relapsing; n=132) |
Clinical Practice Overall (n=134) |
GiACTA overall vs Clinical Practice overall |
GiACTA relapsing vs Clinical Practice overall |
Inclusion criteria |
ACR 1990 modified |
ACR 1990 modified |
ACR 1990, biopsy proven GCA, cranial symptoms plus LVV* |
|
|
Women / men, n (%) |
188 (74.9)/63 (25.1) |
99 (75)/33 (25) |
101 (75.4)/ 33 (24.6) |
0.98 |
0.94 |
Age, mean (SD) |
69 (8.2) |
69.1 (8) |
73 (8.8) |
<0.0001 |
0.0002 |
Newly diagnosed GCA/ recurrent GCA |
119/132 |
0/132 |
0/134 |
– |
– |
Time (months) from GCA diagnosis, mean (SD) |
9.1 (16.8) |
16.9 (20.3) |
13.5 [5.0-33.5] |
– |
– |
Signs/symptoms of GCA at TCZ onset |
98 (39) |
59 (44.7) |
74 (55.2) |
0.003 |
0.11 |
PMR, n (%) |
49 (19.5) |
40 (30.3) |
73 (54) |
<0.0001 |
0.0001 |
Visual affection, n (%) |
4 (1.6) |
4 (3) |
28 (20.9) |
<0.0001 |
<0.0001 |
ESR, mean (SD) |
24 (19.4) |
26.8 (19.6) |
40.5 (31.2) |
<0.0001 |
<0.0001 |
CRP, mean (SD) |
7.5 (13.4) |
8.4 (15.4) |
3 (5.3) |
<0.0001 |
0.0002 |
Positive TAB, n (%) |
156 (62.1) |
82 (62.1) |
72 (53.7) |
0.14 |
0.21 |
Imaging techniques, n (%) |
138 (55) |
70 (53) |
75 (56) |
0.93 |
0.72 |
Positive MRA, n (%) |
8 (3.2) |
4 (3) |
16 (11.9) |
0.002 |
0.01 |
Positive CT scan, n (%) |
13 (5.2) |
7 (5.3) |
4 (44.4) |
0.46 |
0.52 |
Positive PET/CT scan, n (%) |
97 (38.7) |
42 (31.8) |
52 (38.8) |
0.93 |
0.29 |
Patients on corticosteroids at study onset, n (%) |
251 (100) |
132 (100) |
134 (100) |
– |
– |
Prednisone at TCZ onset, mean (SD) |
40 (13.1) |
30.2 (12) |
21.7(16.1) |
<0.0001 |
<0.0001 |
Previous immunosuppressant agents, n (%) |
27 (10.8) |
23 (17) |
98 (73.1) |
<0.0001 |
<0.0001 |
Previous biologic therapy, n (%) |
– |
– |
3 (2.2) |
– |
– |
TCZ route |
SC |
SC |
IV (106) SC (28) |
– |
– |
Sustained remission, n (%) § |
82 (54.6) |
– |
50 (70.4) |
0.42 |
– |
Severe infection, n (%)§ |
9/150 (6) |
– |
16 (11.9) |
0.12 |
– |
* Large vessel vasculitis (LVV) by imaging techniques.
To cite this abstract in AMA style:
Calderón Goercke M, Loricera J, Prieto Peña D, Aldasoro V, Castañeda S, Villa-Blanco I, Humbría A, Moriano Morales C, Romero-Yuste S, Narváez FJ, Gómez-Arango C, Perez Pampín E, Melero R, Becerra-Fernández E, Revenga Martínez M, Álvarez-Rivas N, Galisteo C, Sivera F, Olivé-Marqués A, Alvarez de Buergo MC, Rojas Vargas LM, Fernandez-Lopez C, Navarro F, Raya Álvarez E, Galindez-Agirregoikoa E, Arca B, Solans R, Conesa A, Hidalgo-Calleja C, Vázquez C, Román Ivorra JA, Lluch P, Manrique-Arija S, Vela P, De Miguel E, Torres-Martín C, Nieto JC, Ordas-Calvo C, Salgado-Pérez E, Luna Gómez C, Toyos Sáenz de Miera FJ, Fernandez-Llanio Cornella N, García A, Larena C, Atienza-Mateo B, Martín-Varillas JL, Palmou-Fontana N, Calvo-Río V, González-Vela C, Corrales A, Varela-García M, Aurrecoechea E, Dos Santos R, García-Manzanares A, Ortego Centeno N, Fernández S, Ortiz-Sanjuán F, Corteguera M, González-Gay MA, Hernández JL, Blanco R. A Multicenter Series of Giant Cell Arteritis Patients from Clinical Practice in Treatmet with Tocilizumab Compared with Giacta Trial [abstract]. Arthritis Rheumatol. 2018; 70 (suppl 9). https://acrabstracts.org/abstract/a-multicenter-series-of-giant-cell-arteritis-patients-from-clinical-practice-in-treatmet-with-tocilizumab-compared-with-giacta-trial/. Accessed .« Back to 2018 ACR/ARHP Annual Meeting
ACR Meeting Abstracts - https://acrabstracts.org/abstract/a-multicenter-series-of-giant-cell-arteritis-patients-from-clinical-practice-in-treatmet-with-tocilizumab-compared-with-giacta-trial/