Effects of interleukin-1 antagonists on de novo and pre-existing damage in patients with familial Mediterranean fever

OBJECTIVES

Colchicine is the mainstay of familial Mediterranean fever treatment and interleukin (IL-1) antagonists are the treatment of choice in resistant patients. We aimed to investigate efficacy of IL-1 antagonists in the prevention of damage, as well as the causes of treatment failure.

METHODS

A total of 111 patients fulfilling Euro fever and Tel-Hashomer criteria and treated with IL-1 antagonists were included in the study. Patients were grouped according to their recent damage status: no damage, pre-existing damage and de novo damage that developed under IL-1 antagonist treatment. The degree of damage was determined using the Auto Inflammatory Disease Damage Index (ADDI). Total damage score was calculated separately as its original definition and with excluding chronic musculoskeletal pain, creating the modified ADDI (mADDI).

RESULTS

Forty-six patients (43,2 %) had damage according to the mADDI. Damage was commonly observed at musculoskeletal, renal and reproductive domains. Median duration of treatment was forty-five months. Two patients developed de novo damage: one musculoskeletal and one reproductive in this time-period. Five patients had a worsening of their damage while using IL-1 antagonists. De novo damage with IL-1 antagonist treatment was associated with acute phase protein levels.

CONCLUSIONS

We evaluated change in damage accrual while using IL-1 antagonists in patients with FMF. Physicians should pay attention to controlling inflammation to prevent further damage, especially in those with pre-existing damage.

Preliminary data revealing efficacy of Streptococcus salivarius K12 (SSK12) in Periodic Fever, Aphthous stomatitis, Pharyngitis, and cervical Adenitis (PFAPA) syndrome: A multicenter study from the AIDA Network PFAPA syndrome registry

Objective

To evaluate the potential role of Streptococcus salivarius K12 (SSK12) in controlling febrile flares in patients with Periodic Fever, Aphthous stomatitis, Pharyngitis, and cervical Adenitis (PFAPA) syndrome. Further aims were to assess the impact of SSK12 on (i) flare duration, (ii) variation in the degree of the highest body temperature during flares, (iii) steroid-sparing effect, and (iv) change of PFAPA accompanying symptoms before and after SSK12 introduction.

Patients and methods

The medical charts from 85 pediatric patients with PFAPA syndrome (49 males and 36 females) enrolled in the AIDA registry and treated with SSK12 for a median period of 6.00 ± 7.00 months in the period between September 2017 and May 2022 were examined. Children recruited had a median time of disease duration of 19.00 ± 28.00 months.

Results

The number of febrile flares significantly decreased comparing the 12 months before [median (IQR), 13.00 (6.00)] and after SSK12 initiation [median (IQR), 5.50 (8.00), p < 0.001]. The duration of fever was significantly reduced from 4.00 (2.00) days to 2.00 (2.00) days [p < 0.001]. Similarly, the highest temperature in°C was found significantly lower in the last follow-up assessment [median (IQR), 39.00 (1.00)] compared to the period prior to SSK12 start [median (IQR), 40.00 (1.00), p < 0.001]. Steroid load (mg/year) of betamethasone (or any equivalent steroid) significantly decreased between 12 months before treatment with SSK12 [median (IQR), 5.00 (8.00) mg/year] and the last follow-up visit [median (IQR), 2.00 (4.00) mg/year, p < 0.001]. The number of patients experiencing symptoms including pharyngitis/tonsillitis (p < 0.001), oral aphthae (p < 0.001) and cervical lymphadenopathy (p < 0.001) significantly decreased following SSK12.

Conclusion

SSK12 prophylaxis given for at least 6.00 months was found to reduce febrile flares of PFAPA syndrome: in particular, it halved the total number per year of fever flares, shortened the duration of the single febrile episode, lowered body temperature by 1°C in the febrile flare, provided a steroid-sparing effect, and significantly reduced the accompanying symptoms related to the syndrome.

AB1272 FACTORS AFFECTING PATIENT-ACCEPTABLE SYMPTOM STATES IN FAMILIAL MEDITERRANEAN FEVER

Background

Familial Mediterranean fever (FMF) is an autoinflammatory disease characterized by recurrent attacks of fever, serositis, and musculoskeletal symptoms (1, 2). Arthritis is the most common musculoskeletal symptom of attacks and also included in diagnostic criteria of FMF (3). If it is specifically queried, myalgia may be detected in up to 20-25% of the patients with FMF.(4,5).

Objectives

In our study, we aim to assess the localization of attack-related myalgia and associated parameters in patients with FMF.

Methods

A total of 349 consecutive patients followed by FMF in our clinic were enrolled in the study and asked for attack-induced myalgia and if present, localization of muscle groups on the mannequin body parts diagram.

Attack frequency, duration, and disease activity were evaluated with the AutoInflammatory Diseases Activity Index (AIDAI) scoring system (6). Patients were also asked for work/study day loss during attacks and patient acceptable symptom state (PASS) status (7).

Results

126 patients showed attack myalgia (36%); attack duration, frequency, severity were significantly higher in patients with attack-myalgia (p<0,005). Most common muscle groups were calves, lower back, and latissimus dorsi muscles in order. Myalgia was most commonly accompanied by arthritis (p<0,002). Patients with myalgia have a higher frequency of colchicine resistance and work/study day loss due to attacks.

Conclusion

Our results conclude that myalgia is an important domain of attacks and causes absenteeism and uncontrolled disease activity. Treatment of myalgia attacks may provide controlled disease activity, and prevent absenteeism from work/school.

References

[1]El-Shanti H, Majeed HA, El-Khateeb M. Familial mediterranean fever in Arabs.Lancet. 2006;367(9515):1016–24.

[2]Majeed HA, Al-Qudah AK, Qubain H, Shahin HM. The clinical patterns of myalgia in children with familial Mediterranean fever. Semin Arthritis Rheum. 2000;30(2):138–43.

[3]Gattorno M, Hofer M, Federici S, Vanoni F et al. Eurofever Registry and the Paediatric Rheumatology International Trials Organisation (PRINTO). Classification criteria for autoinflammatory recurrent fevers. Ann Rheum Dis. 2019 Aug;78(8):1025-1032. doi: 10.1136/annrheumdis-2019-215048.

[4]Zemer D. Muscle pains in familial Mediterranean fever. Harefuah 1984; 106: 232-233.

[5]Majeed HA. Differential diagnosis of fever of unknown origin in children. Curr Opin Rheumatol 2000; 12: 439-444.

[6]Piram M, Frenkel J, Gattorno M et al. EUROFEVER and EUROTRAPS networks. A preliminary score for the assessment of disease activity in hereditary recurrent fevers: results from the AIDAI (Auto-Inflammatory Diseases Activity Index) Consensus Conference. Ann Rheum Dis. 2011 Feb;70(2):309-14. doi: 10.1136/ard.2010.132613.

[7]Salaffi F, Carotti M, Gutierrez M, Di Carlo M, De Angelis R. (2015) Patient Acceptable Symptom State in Self-Report Questionnaires and Composite Clinical Disease Index for Assessing Rheumatoid Arthritis Activity: Identification of Cut-Off Points for Routine Care. Biomed Res Int. 2015:930756. doi: 10.1155/2015/930756.

Table 1.

Comparison of clinical and laboratory parameters between patients with /without myalgia attacks

Patients with myalgia attackPatients without myalgia attackp valueAge (years)36,33 ±10, 6837,9±11, 48>0,05Sex (female/male)78/43138/87>0,05Follow-up time (years)16,117,6>0,05Dominant attack(number)Peritonitis4255>0,05Arthritis11390,012Pleuritis1310>0,05Only fever47>0,05AIDAI score (mean, 0-175)127,4080,68<0,05VAS score for pain (median score, during attack. 0-10)85<0,05Colchicine resistance (number ofpatients)69250,003Colchicine-resistant29840,002Colchicine-sensitivePASS status (number)Need additional treatment4160,016Satisfied from treatment34740,010Work/study day loss (number)4860,003

Acknowledgements

All study population signed informed consent for both participation and publication. Local Ethical Committee of the university approved the study.

Disclosure of Interests

None declared

POS1328 DO IL-1 ANTAGONISTS DEFINITELY PROTECT FROM THE DEVELOPMENT OF NEW DAMAGE: A SINGLE-CENTER STUDY

Background

Ongoing inflammatory episodes of familial Mediterranean fever (FMF) disease can cause damage in nearly all organ systems. Colchicine and interleukin1β blocking agents are successfully used to control the disease activity [1]. Although the effect of IL-1 blockers are known for controlling disease activity and amyloidosis [2], it is unclear whether they prevent organ damage

Objectives

In our study, we assessed the organ damage in patients with FMF treated with colchicine and IL-1 antagonists (IL-1A). It was evaluated whether new damage occurred after IL-1 antagonist treatment.

Methods

A total of 111 patients fulfilling Tel-Hashomer criteria and treated with IL-1A due to colchicine resistance were included in the study. All patients were also treated with colchicine with a maximum-tolerable dose. Patients were grouped according to their recent damage status (no damage, pre-existing damage, and damage developed under IL-1A treatment). The degree of damage was determined using Autoinflammatory Disease Damage Index (ADDI) and modified form of ADDI (mADDI) [3, 4].

Results

44 patients (42,3%) had damage according to the modified ADDI (mADDI) index; three patients experienced new damage under IL-1 antagonist treatment while four patients showed progression of damage and mADDI score.

In patients with a positive mADDI score, the most common damage was amyloidosis (n=28, 63%), the second most frequent was musculoskeletal findings (N=14, 31%), and the third was infertility (N=2, 0,04%). The most common domains of FMF-related damage with IL-1 antagonist treatment were musculoskeletal (n=4), renal (n=2) and reproductive system (n=2)

Conclusion

Our study was the first study to evaluate the progression of damage in patients with FMF and treated- with IL-1 antagonists. Although it is known that IL-1A is effective in colchicine-resistant patients, physicians should be aware that damage can still develop under IL-1A treatment.

References

[1]Chae JJ, Aksentijevich I, Kastner DL. Advances in the understanding of familial Mediterranean fever and possibilities for targeted therapy. Br J Haematol 2009; 146:467–78.

[2]Ozcakar ZB, Ozdel S, Yilmaz S, Kurt-Sukur ED, Ekim M et al. Anti-IL-1 treatment in familial Mediterranean fever and related amyloidosis. Clinical Rheumatology 2016; 35 (2): 441- 446. doi: 10.1007/s10067-014-2772-2

[3]Ter Haar NM, Annink KV, Al-Mayouf SM et al.: Development of the autoinflammatory disease damage index (ADDI). Ann Rheum Dis 2017; 76: 821-30

[4]Babaoglu H, Armagan B, Bodakci E, Satis H, Atas N, Sari A, Yasar Bilge NS, Bilici Salman R, Yardimci GK, Avanoglu Guler A, Karadeniz H, Kilic L, Ozturk MA, Goker B, Haznedaroglu S, Kalyoncu U, Kasifoglu T, Tufan A. Factors associated with damage in patients with familial Mediterranean fever. Clin Exp Rheumatol. 2020 Sep-Oct;38 Suppl 127(5):42-48.

Table 1.

Comparison of clinical and laboratory parameters between groups according to damage

No damageNew damageAny damageP valueAge (years)48,456,467,50,002Sex (K/E)34/332/525/19NSFollow-up time (years)4043560,33Dominant attack typePeritonitis(63,7%)NAArthritis(34,1%)NSPersistent inflammation33,642,344,30,05AIDAI score394048NSMutationsM694V/M694V26214NSM694V/any44438M694V/M680I314M680I/any119

•SAIDAI: Auto-Inflammatory Diseases Activity Index

Acknowledgements

All participants were confirmed for both participation and publication. Local Ethical Committee approved the study

Disclosure of Interests

None declared

Development and implementation of the AIDA International Registry for patients with Periodic Fever, Aphthous stomatitis, Pharyngitis, and cervical Adenitis syndrome

OBJECTIVE

Aim of this paper is to illustrate the methodology, design, and development of the AutoInflammatory Disease Alliance (AIDA) International Registry dedicated to patients with the Periodic Fever, Aphthous stomatitis, Pharyngitis, and cervical Adenitis (PFAPA) syndrome.

METHODS

This is a physician-driven, non-population- and electronic-based registry proposed to gather real-world demographics, clinical, laboratory, instrumental and socioeconomic data from PFAPA patients. Data recruitment is realized through the on-line Research Electronic Data Capture (REDCap) tool. This registry is thought to collect standardized information for clinical research leading to solid real-life evidence. The international scope and the flexibility of the registry will facilitate the realization of cutting-edge study projects through the constant updating of variables and the possible merging and transfer of data between current and future PFAPA registries.

RESULTS

A total of 112 centers have already been involved from 23 countries and 4 continents starting from August 24th, 2021, to April 6th, 2022. In total 56/112 have already obtained the formal approval from their local Ethics Committees. The platform counts 321 users (113 principal investigators, 203 site investigators, two lead investigators, and three data managers). The registry collects retrospective and prospective data using 3,856 fields organized into 25 instruments, including PFAPA patient's demographics, medical histories, symptoms, triggers/risk factors, therapies, and impact on the healthcare systems.

CONCLUSIONS

The development of the AIDA International Registry for PFAPA patients will enable the on-line collection of standardized data prompting real-life studies through the connection of worldwide groups of physicians and researchers. This project can be found on https://clinicaltrials.gov NCT05200715.