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First author: François Rodrigues et al.


Caractéristiques de la fièvre méditerranéenne familiale après 65 ans

              Familial Mediterranean Fever (FMF) is an autosomal recessive disease caused by mutations in MEFV, characterized by recurrent febrile attacks. The natural history of the disease, which began in children and had a high mortality rate in the last century, is unknown in people over 65.


        This retrospective study included the records of 59 patients with FMF followed at Hôpital Tenon (Paris, France), representing 9% of the total number of patients followed for FMF. The median age was 73 years. Although all patients were treated with colchicine, the study population, born in the 1940s-1950s, had a late diagnosis (median age 28 years) and a delayed initiation of colchicine (35 years, median year of introduction 1980). 73% of patients had an elevated intercritical CRP on colchicine, and 37% had to receive an inteleukin-1 inhibitor, with good tolerability. The prevalence of AA amyloidosis was 10%. The most frequent comorbidities were cardiovascular (59% of patients) and, unexpectedly, hepatic (37%), with a high frequency of non-alcoholic, non-viral cirrhosis (27%) and no associated diabetes, suggesting a link with FMF. Nine patients (15%) had died at the time of collection, two from complications of FMF, two from hepatic cirrhosis, and five from infections.


             In conclusion, the study indicates that FMF can remain active after the age of 65, motivating specialized lifelong follow-up with CRP monitoring between attacks, as well as the prescription of biotherapy in the event of unsatisfactory disease control.




First author: Kvacskay P

Revue : Annals of Rheumatic disease

Reference:  PMID: 38653531 ; DOI: 10.1136/ard-2023-225114


 

Introduction:

AA amyloidosis (AA) can be the consequence of any chronic inflammatory disease. AA is associated with chronic inflammatory diseases (cid+AA), autoinflammatory syndromes (auto+AA) or AA of unknown origin or idiopathic AA (idio+AA). The major organ manifestation is renal AA that can progress to end-stage renal disease (ESRD) and multiple organ failure.


Materials and methods:

This study is a monocentric retrospective analysis of the renal outcome and survival of patients with cid+AA (n=34), auto+AA (n=24) and idio+AA (n=25) who were treated with cytokine-inhibiting biological disease-modifying antirheumatic drugs (bDMARDs).


Results

83 patients with renal AA amyloidosis were identified and followed for a mean observation period of 4.82 years.

The patients were 34 with cid+AA (40.5%), including 18 with rheumatoid arthritis and 8 with chronic inflammatory bowel disease; 25 with idio+AA (30.5%) and 24 with auto+AA (29%), including 22 with familial Mediterranean fever and 2 with cryopyrinopathies.

Levels of C-reactive protein (CRP), serum amyloid A protein (SAA) and proteinuria were significantly reduced under treatment with biotherapy.

With biotherapy, progression to ESRD was prevented in 88% of patients in the auto+AA group, 81% in the idio+AA group and 60% in the cid+AA group during the study period.

Thirty-four patients received tocilizumab in the cid+AA (n=18) and idio+AA (n=16) arms. Tocilizumab was more effective in reducing CRP and progression to ESRD and death than other biotherapies. No patient taking tocilizumab during the study period died.

Patients with autoinflammatory diseases were excluded from this analysis with tocilizumab as this biotherapy is not indicated for inflammatory diseases.


Conclusion


Anti-proinflammatory cytokine biotherapies reduce systemic inflammation in various diseases associated with the development of AA amyloidosis, leading to a reduction in proteinuria and prevention of ESRD.


In this retrospective series, tocilizumab tested in 34 patients with AA amyloidosis complicating chronic or idiopathic inflammatory disease was more effective than other biotherapies in controlling systemic inflammation, leading to improved renal and overall survival in these patients.


Figures


Figure 1. Serum biomarkers and proteinuria are analysed in subgroups of AA patients with chronic inflammatory disease cid+AA (cid+AA), autoinflammatory disease auto+AA (auto+AA) and idiopathic disease (idio+AA).


Biotherapy was initiated at the first visit (baseline) and compared with the last documented visit 4 to 6 years later. CRP (A), SAA (B), serum creatinine (C), sample proteinuria (D), serum albumin (E), total serum protein (F), serum IgG (G) and NT-BNP (H) were analysed at the first and last visits.

Figure 1


Figure 2: Patients treated with Tocilizumab (TOC) were compared with other biotherapies.


(A): Patients with cid+AA (cid+AA) and idio+AA were followed every 6 months until the last visit.

(B) and (C): Analyses of cid+AA (cid+AA) and idio+AA subgroups are shown. (D) Across the cohort tocilizumab (TOC) prevented progression of AA to other organs and death (D).


Figure 2


 
 
 

S. Georgin-Laviallea,h,∗, L. Saveya,h, L. Cuissetc, G. Boursiere,h, J.-J. Boffab,h,

M. Delplanquea,h, R. Bourguibaa,h, J.-B. Monfortd,h, I. Touitoue,h, G. Grateaua,h,

I. Kone-Pautf,h, V. Hentgeng,h, Collaborators1


Protocole national de diagnostic et de soin de la FMF




Summary:


Familial Mediterranean Fever is the world's most common monogenic autoinflammatory disease. It mainly affects people from the Mediterranean region. The mutated gene is MEFV, which codes for pyrin. Transmission is autosomal recessive. Patients present with recurrent attacks of fever since childhood, associated with abdominal and/or thoracic pain lasting an average of 2 to 3 days, and a biological inflammatory syndrome. Other symptoms include arthralgia or arthritis of large joints such as the knees and ankles, myalgia of the lower limbs and pseudo-eryzipelas of the ankles. Its most severe complication is inflammatory amyloidosis, or AA amyloidosis, which can lead to renal failure. Treatment is based on colchicine, which helps prevent relapses and the onset of renal amyloidosis.


This work presents national recommendations for the diagnosis, management and follow-up of Familial Mediterranean Fever in France, where we estimate there are between 5,000 and 10,000 patients with the disease at all stages of life. Diagnosis is suspected on the basis of clinical and anamnestic elements, and confirmed by genetic analysis. These recommendations also propose a “treat-to-target” approach to disease treatment, particularly in cases of suspected colchicine resistance - a very rare situation that should remain a situation of elimination, particularly after verification of colchicine compliance. Two special situations are also addressed in these recommendations: renal failure and pregnancy.

© 2023 Publié par Elsevier Masson SAS au nom de Société Nationale Franc¸ aise de Médecine Interne (SNFMI).



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