fetching data ...

ABS0439 (2025)
PATH TO DIAGNOSIS IN FAMILIAL MEDITERRANEAN FEVER (FMF)
Keywords: Rare/orphan diseases, Health services research
S. Karup2, F. N. Azman1, D. Polat2, E. Dincsoy2, M. E. Cokrak2, E. Berkiten2, S. Ugurlu
1Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Istanbul, Türkiye
2Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Türkiye

Background: Familial Mediterranean Fever (FMF) is a genetic disorder characterized by recurrent febrile episodes and inflammation, most commonly presenting with peritonitis, pleuritis, and arthritis [1]. The diagnostic delay in FMF is still high and there are issues about it that need to be solved [2].


Objectives: Exploring the challenges and complexities faced by FMF patients in their journey to diagnosis.


Methods: This study involved surveying patients at an autoinflammatory clinic to explore the diagnostic pathways leading to the identification of FMF.


Results: A sample of 300 patients with a mean age of 38.2 years (± 12.2 years, range 16-72), consisting of 209 males and 92 females was examined (Table 1). Before their FMF diagnosis, patients consulted various specialties: 38.9% with internal medicine, 18.9% with pediatrics, and 15.3% with emergency medicine. Additionally, 26.7% consulted other departments. Regarding referrals, 47.5% were referred to another specialty, while 52.5% were not. Among the participants, 25.9% were initially referred to rheumatology. 46.5% did not receive any initial referral (Table 1). In the initial consultation with the rheumatologist, 59.8% received an FMF diagnosis and started colchicine treatment with a follow-up appointment scheduled (Table 2). 38.9% waited between 1 to 5 years from the onset of initial symptoms to their diagnosis by the rheumatologist for FMF (Table 3). Following the diagnosis of FMF, 31.9% of patients continued their follow-up with the doctor who initially diagnosed them, while 68.1% did not continue with the diagnosis doctor. After receiving a diagnosis of FMF, treatment for FMF typically started within one day for 68.6% of patients, 14.0% began treatment within 1-2 weeks, 6.6% within 1 month, 3.7% within 1-3 months, and 7.0% started treatment after 3 months or more. After starting their first FMF preventive medication, 68.4% experienced four or more attacks requiring additional medication. Additionally, 8.3% had two episodes, 4.7% had three episodes, and another 4.7% had one episode. 14.0% did not experience any attacks after starting treatment. 89.7% secured appointments with their rheumatologist in less than a week, while 7.0% experienced waits exceeding a month. 17.9% of participants reported trying alternative approaches, while 82.1% did not pursue alternative treatments. 49.5% expressed confidence regarding future improvement in their condition, 31.9% were not optimistic, and 18.6% were uncertain.


Conclusion: These findings highlight varied initial consultations for FMF, showing significant diagnosis delays and frequent changes in healthcare providers post-diagnosis, emphasizing the need for standardized protocols to improve care continuity.


REFERENCES: [1] Sohar, E., Gafni, J., Pras, M., et al. Familial Mediterranean fever. A survey of 470 cases and review of the literature. Am J Med. 1967; 43(2): 227–253.

[2] Bourguiba R, Deshayes S, Amaryan G, et al. Diagnostic delays in familial Mediterranean fever: a Juvenile Inflammatory Rheumatism (JIR) cohort study. Rheumatol Int . 2024;44(12):3107-3111.

Demographic and Specialist Referrals Characteristics

n=300
Age 38.2 ± 12.2 (16-72)
Gender (F:M) 209:92
Specialist Referrals n (%)
Rheumatology 7 (25.9)
Internal Medicine 34 (11.3)
Pediatric Rheumatology 29 (9.6)
General Surgery 7 (2.3)
Pediatrics 3 (1.0)
Pulmonology 2 (0.6)
Infectious Diseases 1 (0.3)
Gastroenterology 1 (0.3)
Hematology 1 (0.3)
Cardiology 1 (0.3)
Nephrology 1 (0.3)
Orthopedics and Traumatology 1 (0.3)
Already being treated by Rheumatology 1 (0.3)
No referral made 140 (46.5)

Processes Following FMF Diagnosis and Treatment Initiation

Process Description n (%)
Diagnosed with FMF, started colchicine treatment, no follow-up appointment given 10 (3.3)
Diagnosed with FMF, started colchicine treatment, follow-up appointment provided 180 (59.8)
Tests conducted, treatment initiated, follow-up appointment scheduled 91 (30.2)
Tests conducted, advised for treatment-free monitoring, follow-up appointment scheduled 13 (4.3)
Treatment initiated, no follow-up appointment provided 7 (2.3)

Duration from Onset of Symptoms to FMF Diagnosis

Time Frame n (%)
1-2 weeks 13 (14)
1-3 months 41 (13.6)
1-5 years 117 (38.9)
10+ years 90 (29.9)
5-10 years 32 (10.6)
Unknown 8 (2.7)

Acknowledgements: NIL.


Disclosure of Interests: None declared.

© The Authors 2025. This abstract is an open access article published in Annals of Rheumatic Diseases under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ). Neither EULAR nor the publisher make any representation as to the accuracy of the content. The authors are solely responsible for the content in their abstract including accuracy of the facts, statements, results, conclusion, citing resources etc.


DOI: annrheumdis-2025-eular.B1629
Keywords: Rare/orphan diseases, Health services research
Citation: , volume 84, supplement 1, year 2025, page 1555
Session: Autoinflammatory disease, Vexas and other monogenic diseases (Publication Only)