OP0043 TOCILIZUMAB SIGNIFICANTLY REDUCES SERUM AMYLOID A IN PATIENTS WITH FAMILIAL MEDITERRANEAN FEVER – DATA FROM THE PROSPECTIVE, RANDOMIZED, DOUBLE-BLIND TOFFIFE STUDY

Background

Uncontrolled inflammation in patients with familial Mediterranean fever (FMF) can lead to severe organ failure due to amyloidosis. Colchicine is still the standard treatment and the only therapy that has been proven to reduce the risk for amyloidosis. Besides colchicine the Interleukin (IL)1-antagonists Anakinra and Canakinumab are approved, but new treatment options are still needed. The IL-6 antagonist Tocilizumab (TCZ) effectively reduces inflammation and is approved in several other rheumatic indication. Here we present data from our phase II study TCZ for the treatment of FMF – TOFFIFE.

Objectives

To explore the efficacy and safety of tocilizumab in FMF.

Methods

The TOFFIFE study was a placebo-controlled, double-blinded, randomized trial to investigate the efficacy and safety of TCZ in patients with colchicine resistant (cr)FMF. The physician’s global assessment of disease activity (PGA) based on a 5 point-scale for 6 symptoms (range 0-24) was used as a clinical score and had to be >2 at screening. Patients were randomized 1:1 to either receive monthly TCZ intravenously with 8 mg/kg bodyweight or placebo over a period of 24 weeks. Patients with inadequate response after week 12 had the opportunity to receive open label TCZ at week 16. The primary endpoint was the number of patients achieving an adequate response to treatment at week 16, defined as a PGA ≤ 2 + normalized ESR or CRP (the item that led to inclusion had to be normalized) + normalized SAA. Secondary endpoints included normalization of SAA during treatment and safety of TCZ in FMF patients.

Results

25 patients were randomized with a median age of 31 years (range 18 - 53y), of which 14 (56%) were female. At week 16, which was the timepoint for the primary end point, 2 (15.4%) patients in the TCZ arm reached the primary end point with a PGA ≤ 2 and normalization of SAA and CRP and/or ESR but none of the patients in the placebo arm. Therefore, the superiority of TCZ compared to placebo could be shown concerning the pre-specified significance level of α=0.2 (p=0.089). SAA levels normalized with TCZ but not with PBO. This difference between TCZ und PBO was highly significant; SAA p < 0.015. At week 28 with 17 remaining patients and after having had the opportunity for a rescue treatment at week 16, the responder rates (PGA ≤ 2 + normalization of SAA, ESR and/or CRP) were 25% (n=1) in those patients who changed from placebo to TCZ (n=4) and 20% (n=2) in those patients who continued with TCZ (n=10). Of note, all 3 patients remaining on PBO were non-responders (p= 0.642). In 75% of patients (n=3) CRP and in 50% SAA (n=2) normalized after changing to TCZ. No new safety aspects occurred.

Conclusion

In this first randomized, placebo-controlled study in patients with active crFMF TCZ significantly reduced and normalized SAA levels. The trial met the primary endpoint to demonstrate the superiority of TCZ over PBO although only a small numerical difference was found. Nevertheless, the proportion of patients with a successful TCZ-therapy was lower than expected due to very strict response criteria; patients had to achieve a complete remission with a PGA ≤2 (on a 0-24 scale) and normalization of the inflammatory parameters (CRP/ESR and SAA). This required no or only mildest symptoms during the last 4 weeks. A larger multicenter study is therefore justifiable and needs to clarify the benefit of TCZ treatment in FMF.

Figure 1.

Secondary endpoint: Serum Amyloid A over time, showing a clear reduction in the TCZ but not in the PBO arm and rerise of SAA after discontinuation after week 28. Normal SAA value = < 10mg/l. Outliers > 100mg/l were excluded in this graph.

Disclosure of Interests

Jörg Henes Speakers bureau: SOBI, Novartis, Roche/Chugai, Consultant of: SOBI, Novartis, Roche/Chugai, Grant/research support from: SOBI, Novartis, Roche/Chugai, Sebastian Saur: None declared, David M Kofler: None declared, Claudia Kedor: None declared, Christoph Meisner: None declared, Martin Krusche Speakers bureau: SOBI, Novartis, Roche/Chugai, Ina Kötter Speakers bureau: SOBI, Novartis, Roche/Chugai, Consultant of: SOBI, Novartis, Roche/Chugai, Theodoros Xenitidis: None declared, Hendrik Schulze-Koops Speakers bureau: SOBI, Novartis, Roche/Chugai, Consultant of: SOBI, Novartis, Roche/Chugai, Eugen Feist Speakers bureau: SOBI, Novartis, Roche/Chugai, Consultant of: SOBI, Novartis, Roche/Chugai.

SAT0255 THE RATE OF RELAPSE AMONG PATIENTS WITH LARGE VESSEL VASCULITIS AND THE SYSTEMIC INFLAMMATORY RESPONSE AS A POSSIBLE PREDICTOR FOR RELAPSE

Background:

Large vessel vasculitides are known relapsing diseases. However, the rate of relapses has been seldom addressed and there are only few data on relapse predictors.

Objectives:

We conducted the present study to investigate the prevalence of relapses in the first year after diagnosis and the overall relapse among patients with large vessel vasculitis. Furthermore, we aimed to identify if the systemic inflammatory response (SIR) is a possible predictor for relapse among patients with large cell vasculitis.

Methods:

The systemic inflammatory response (SIR) has been described as a potential clinical and serological score predicting the risk for relapses1. SIR estimates the systemic inflammatory activity at the time point of first diagnosis1. It was defined as follows: Temperature >38°C, weight loss >4kg, Haemoglobin <11 g/dl and erythrocyte sedimentation rate >85 mm/h. For each of the above-mentioned criteria one point was attributed, leading to a range from 0 to 4 points. Patients with 3 to 4 points were considered having a highly inflammatory response and patients with an SIR ≤ 2 were considered having a low inflammatory response and thus a lower risk for relapses. Relapses are defined as reappearance of disease-related symptoms requiring treatment adjustment. The study cohort included 75 patients with large cell vasculitis (Giant Cell Vasculitis, Takayasu Vasculitis, inflammatory non-infections Aortitis), longitudinally followed by the authors over a mean period of 5.2 ± 3.3 years (range 1-14 yr).

Results:

The study-cohort includes 71 patients with a mean age at diagnosis of 63.5 (16 – 85) years. Almost three quarters (73%) of the patients were women. Most of the patients were suffering from GCA (73.2%), followed by Takayasu arteritis (16.9%) and inflammatory non-infections Aortitis (9.8%). 38 patients (53.5%) relapsed at least once during the follow up, and 17 patients had two or more relapses. The vast majority of relapses (86.8%) were observed within the first year following diagnosis. Most of the patients, 54 patients (76%), were considered having a low inflammatory response (SIR <=2). The relapse rate in this group was 59.2%. On the other hand, there were 17 patients having an SIR higher or equal to 3 points. The relapse rate in this group was 33%.

Conclusion:

In conclusion, the results of this preliminary study reveal that the relapse rate among patients with large vessel vasculitis high is. The SRI appears to be an inadequate predictor for relapse in this cohort.

References:

[1]Alba MA, García-Martínez A, Prieto-González S, et al. Relapses in patients with giant cell arteritis: prevalence, characteristics, and associated clinical findings in a longitudinally followed cohort of 106 patients.Medicine (Baltimore). 2014;93(5):194–201.

Disclosure of Interests:

Vasile-Mihai Coroian: None declared, Sebastian Saur: None declared, Ann-Christin Pecher: None declared, Theodoros Xenitidis: None declared, Jörg Henes Grant/research support from: Novartis, Roche-Chugai, Consultant of: Novartis, Roche, Celgene, Pfizer, Abbvie, Sanofi, Boehringer-Ingelheim,

Chest CT texture analysis for response assessment in systemic sclerosis

PURPOSE

To evaluate the role of CT-textural features for monitoring lung involvement in subjects with systemic sclerosis(SSc) undergoing autologous stem cell transplantation(SCT) by comparison with semi-quantitative chest-CT, pulmonary function tests(PFT) and clinical parameters (modified Rodnan skin score[mRSS]).

METHODS

In a retrospective single centre analysis, we identified 23 consecutive subjects(11male) with SSc between 07/2005 and 11/2016 that underwent chest CTs before, 6 and 12 months post-SCT. Response to therapy was defined at 6 months after transplantation as stabilisation or improvement in FVC > 10% and DLCO_SB > 10%. CT-texture analysis(CTTA) including mean, entropy and uniformity were calculated.

RESULTS

PFT classified the subjects into responders(18/23;78%) and non-responders(5/23;22%). mRSS improved in responders from 28.46 ± 9.53 to 15.70 ± 10.07 6 months after auto-SCT(p = .001) whereas in non-responders no significant improvement was registered. Fibrosis score increased significantly(mean2.33 ± 1.23 vs.1.41 ± 0.78; p = .005) in non-responders after 6 and 12months. Significant lower mean intensity and entropy of skewness and higher uniformity of skewness was found in responders vs. non-responders at baseline. Significant changes in CTTA-parameters were found in both responders and non-responders at 6months and only in responders also at 12months post-SCT.

CONCLUSIONS

Changes in CT-textural features after SCT are associated with visual CT evaluation of SSc-related lung abnormalities, but complementary provide information about therapy-induced, structural pulmonary changes.

[Varicella gastritis under immunosuppression : Case report of a woman after lung transplantation due to granulomatosis with polyangiitis]

A 35-year-old woman who had previously undergone a lung transplantation presented with severe abdominal pain and vomiting. The gastroscopy showed diffuse ulcerative gastric lesions. Tests for varicella zoster virus and Epstein-Barr virus via polymerase chain reactions (PCR) on endoscopically obtained gastric biopsies were found to be positive and confirmed varicella gastritis. Intravenous antiviral therapy with acyclovir was administered resulting in a normalization of all clinical symptoms, especially of abdominal pain and inflammation parameters.

[Behçet's disease]

Behçet's disease is a systemic disorder with the histopathological correlate of leukocytoclastic vasculitis. Pathogenetically, besides a strong genetic component participation of the innate immune system and an autoinflammatory component are discussed. The disease is most common in countries along the former silk route but in Germany the disease is rare (prevalence approximately 0.6/100,000). Oral aphthous ulcers are the main symptom, followed by skin manifestations, genital ulcers and oligoarthritis of large joints. Severe manifestations, threatening quality of life and even life itself, are the gastrointestinal manifestations which often perforate, arterial, mainly pulmonary arterial aneurysms which cause life-threatening bleeding, CNS manifestations and ocular disease, which with occlusive retinal vasculitis often leads to blindness. For milder manifestations low-dose steroids and colchicine are used, for moderate manifestations such as arthritis or ocular disease not immediately threatening visual acuity, azathioprin or cyclosporin A are combined with steroids. For severe manifestations, interferon-alpha, TNF-antagonists or cytotoxic drugs are recommended. Interleukin 1 (IL-1) antagonists are currently being examined in clinical studies.