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Karam S, Haidous M, Royal V, Leung N. Renal AA amyloidosis: presentation, diagnosis, and current therapeutic options: a review. Kidney Int 2023; 103:473-484. [PMID: 36502873 DOI: 10.1016/j.kint.2022.10.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 10/26/2022] [Accepted: 10/31/2022] [Indexed: 12/13/2022]
Abstract
Amyloid A amyloidosis is thought to be the second most common form of systemic amyloidosis behind amyloidosis secondary to monoclonal Ig. It is the result of deposition of insoluble fibrils in the extracellular space of tissues and organs derived from the precursor protein serum amyloid A, an acute phase reactant synthesized excessively in the setting of chronic inflammation. The kidney is the most frequent organ involved. Most patients present with proteinuria and kidney failure. The diagnosis is made through tissue biopsy with involvement of the glomeruli in most cases, but also often of the vessels and the tubulointerstitial compartment. The treatment usually targets the underlying etiology and consists increasingly of blocking the inflammatory cascade of cytokines with interleukin-1 inhibitors, interleukin-6 inhibitors, and tumor necrosis factor-α inhibitors to reduce serum amyloid A protein formation. This strategy has also shown efficacy in cases where an underlying etiology cannot be readily identified and has significantly improved the prognosis of this entity. In addition, there has been increased interest at developing effective therapies able to clear amyloid deposits from tissues, albeit with mitigated results so far.
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Affiliation(s)
- Sabine Karam
- Division of Nephrology and Hypertension, University of Minnesota, Minneapolis, Minnesota, USA.
| | - Mohamad Haidous
- Department of Medicine, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Virginie Royal
- Division of Pathology, Hôpital Maisonneuve-Rosemont, Université de Montréal, Montréal, Quebec, Canada
| | - Nelson Leung
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA; Division of Hematology, Mayo Clinic, Rochester, Minnesota, USA
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Jung JY, Kim YB, Kim JW, Suh CH, Kim HA. Biologic therapy for amyloid A amyloidosis secondary to rheumatoid arthritis treated with interleukin 6 therapy: Case report and review of literature. Medicine (Baltimore) 2021; 100:e26843. [PMID: 34397890 PMCID: PMC8360491 DOI: 10.1097/md.0000000000026843] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/19/2021] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION Secondary amyloidosis is a rare complication of rheumatoid arthritis (RA) that is histologically characterized by the deposition of amyloid fibrils in target organs, such as the kidneys and gastrointestinal tract. Controlling the inflammatory response is essential to prevent organ dysfunction in amyloid A (AA) amyloidosis secondary to RA, and no clear treatment strategy exists. PATIENT CONCERNS AND DIAGNOSIS A 66-year-old woman with RA, who had been treated with disease-modifying anti-rheumatic drugs for 1 year, presented with recurrent abdominal pain and prolonged diarrhea. Endoscopy showed chronic inflammation, and colon tissue histology confirmed AA amyloidosis. INTERVENTIONS AND OUTCOMES After tocilizumab therapy was begun, her diarrhea and abdominal pain subsided, and articular symptoms improved. Biologic drugs for RA have been used in patients with secondary AA amyloidosis, including tumor necrosis factor and Janus kinase inhibitors, interleukin 6 blockers, and a T cell modulator. Here, we systematically review existing case reports and compare the outcomes of RA-related AA amyloidosis after treatment with various drugs. CONCLUSION The data indicate that biologic drugs like tocilizumab might be treatments of choice for AA amyloidosis secondary to RA.
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Affiliation(s)
- Ju-Yang Jung
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Young-Bae Kim
- Department of Pathology, Ajou University School of Medicine, Suwon, Korea
| | - Ji-won Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Chang-Hee Suh
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Hyoun-Ah Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
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Morel J, Tournadre A, Sellam J, Bouhnik Y, Cornec D, Devauchelle-Pensec V, Dieudé P, Goupille P, Kluger N, Lazaro E, Le Goff B, de Lédinghen V, Lequerré T, Nocturne G, Seror R, Truchetet ME, Verhoeven F, Pham T, Richez C. Practical Management of patients on anti-IL6R therapy: Practical guidelines drawn up by the Club Rhumatismes et Inflammation (CRI). Joint Bone Spine 2021; 88:105221. [PMID: 34183155 DOI: 10.1016/j.jbspin.2021.105221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Jacques Morel
- Service de Rhumatologie, CHU Montpellier, Montpellier, France
| | - Anne Tournadre
- Service de Rhumatologie, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Jérémie Sellam
- Service de Rhumatologie, CHU Saint-Antoine, Paris, France
| | - Yoram Bouhnik
- Service de Gastro-entérologie, CHU Hôpital Beaujon, Clichy, France
| | - Divi Cornec
- Service de Rhumatologie, CHRU La Cavale Blanche, Brest, France
| | | | - Philippe Dieudé
- Service de Rhumatologie, CHU Bichat-Claude Bernard, Paris, France
| | | | - Nicolas Kluger
- Dpt Dermatology, Helsinki, Finland & Service de Dermatologie, CHU Bichat-Claude Bernard, Paris, France
| | - Estibaliz Lazaro
- Service de Médecine interne, Hôpital Haut-Lévêque, CHU Bordeaux, Pessac, France
| | | | - Victor de Lédinghen
- Unité d'Hépatologie et transplantation hépatique, Hôpital Haut-Lévêque, CHU Bordeaux, Pessac, France
| | | | | | - Raphaèle Seror
- Service de Rhumatologie, Bicêtre, Le Kremlin-Bicêtre, France
| | | | | | - Thao Pham
- Service de Rhumatologie, CHU Sainte-Marguerite, Marseille, France
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Al Saleh AS, Sidiqi MH, Gertz MA. Improvement in Gastrointestinal Symptoms From Light Chain Amyloidosis After Adalimumab Therapy. Mayo Clin Proc 2019; 94:1380-1381. [PMID: 31272581 DOI: 10.1016/j.mayocp.2019.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 04/09/2019] [Accepted: 04/25/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Abdullah S Al Saleh
- Mayo Clinic, Rochester, MN; King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
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Jung JY, Kim MY, Suh CH, Kim HA. Off-label use of tocilizumab to treat non-juvenile idiopathic arthritis in pediatric rheumatic patients: a literature review. Pediatr Rheumatol Online J 2018; 16:79. [PMID: 30547812 PMCID: PMC6295005 DOI: 10.1186/s12969-018-0296-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 12/04/2018] [Indexed: 12/13/2022] Open
Abstract
Tocilizumab, an anti-interleukin-6 (IL-6) agent, is indicated as a treatment for several autoimmune or inflammatory diseases, including rheumatoid arthritis and juvenile idiopathic arthritis (JIA). IL-6 plays roles in both immune system dysregulation and inflammation, and thus efforts to extend the utility of tocilizumab in patients with autoinflammatory conditions are ongoing. Here, we survey the literature on the off-label use of tocilizumab in patients with juvenile-onset rheumatic diseases including juvenile systemic lupus erythematosus (SLE), juvenile dermatomyositis (DM), vasculitis, juvenile scleroderma, and other autoinflammatory diseases. There is no real evidence that tocilizumab is useful for patients with SLE and juvenile DM, but several cases of childhood Takayasu arteritis have experienced promising outcomes. In juvenile-onset scleroderma, for which no therapy that can halt disease progression is available, tocilizumab may stop progression and the associated functional impairment. Tocilizumab prevents systemic inflammation in patients with Kawasaki's disease, but may develop coronary aneurysms. Tocilizumab has been used to treat several pediatric autoinflammatory diseases, including JIA-associated uveitis and Castleman's disease. Further work in larger populations is necessary to confirm the effects of tocilizumab in patients with pediatric rheumatic diseases.
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Affiliation(s)
- Ju-Yang Jung
- 0000 0004 0532 3933grid.251916.8Department of Rheumatology, Ajou University of medical school, 164 Worldcup-ro, Yeongtong-gu, Suwon, 16499 Republic of Korea
| | - Moon-Young Kim
- 0000 0004 0532 3933grid.251916.8Department of Rheumatology, Ajou University of medical school, 164 Worldcup-ro, Yeongtong-gu, Suwon, 16499 Republic of Korea
| | - Chang-Hee Suh
- 0000 0004 0532 3933grid.251916.8Department of Rheumatology, Ajou University of medical school, 164 Worldcup-ro, Yeongtong-gu, Suwon, 16499 Republic of Korea
| | - Hyoun-Ah Kim
- Department of Rheumatology, Ajou University of medical school, 164 Worldcup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea.
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Ugurlu S, Hacioglu A, Adibnia Y, Hamuryudan V, Ozdogan H. Tocilizumab in the treatment of twelve cases with aa amyloidosis secondary to familial mediterranean fever. Orphanet J Rare Dis 2017; 12:105. [PMID: 28558744 PMCID: PMC5450086 DOI: 10.1186/s13023-017-0642-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 04/26/2017] [Indexed: 12/11/2022] Open
Abstract
Background There is no established treatment of AA amyloidosis, a long-term complication of various chronic inflammatory diseases associated with increased mortality, such as familial Mediterranian fever (FMF). Recently there are few reports pointing out that tocilizumab(TCZ), an anti IL-6 agent may be effective in AA amyloidosis resistant to conventional treatments. We report our data on the effect of TCZ in patients with FMF complicated with AA amyloidosis. Methods FMF patients with histologically proven AA amyloidosis, treated with TCZ (8 mg/kg per month) were followed monthly and the changes in creatinine, creatinine clearance, the amount of 24-hour urinary protein, erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) were noted throughout the treatment period. Adverse effects of the treatment were closely monitored. Results TCZ was given to 12 patients (6 F, 6 M) who also continued to receive colchicine (1.9 ± 0.4 mg/day). Coexisting diseases were ankylosing spondylitis(4) and Crohn’s disease(1). The mean age was 35.2 ± 10.0 years and the mean follow-up on TCZ was 17.5 ± 14.7 months. The renal functions remained stable (mean creatinine from 1.1 ± 0.9 mg/dl to 1.0 ± 0.6 mg/dl), while a significant decrease in acute phase response (the mean CRP from 18.1 ± 19.5 mg/L to 5.8 ± 7.1 mg/L and ESR from 48.7 ± 31.0 mm/h to 28.7 ± 28.3 mm/h) was observed and the mean 24-hour urinary protein excretion reduced from 6537.6 ± 6526.0 mg/dl to 4745.5 ± 5462.7 mg/dl. Two patients whose renal functions were impaired prior to TCZ therapy improved significantly on this regimen. No infusion reaction was observed. None of the patients experienced any FMF attack under TCZ treatment with the exception of 2, one of whom had less frequent attacks while the other had episodes of erysipelas-like erythema. Conclusıon Tocilizumab improved the acute phase response and the renal function in this group of patients and was generally well tolerated. Besides improving the renal function TCZ seemed to control the recurrence of FMF attacks too. Further studies are warrented to test the efficacy and safety of TCZ in AA amyloidosis secondary to FMF as well as other inflammatory conditions.
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Affiliation(s)
- Serdal Ugurlu
- Division of Rheumatology, Department of Medicine, Cerrahpasa Medical Faculty, University of Istanbul, Istanbul, Turkey
| | - Aysa Hacioglu
- Division of Rheumatology, Department of Medicine, Cerrahpasa Medical Faculty, University of Istanbul, Istanbul, Turkey
| | - Yasaman Adibnia
- Division of Rheumatology, Department of Medicine, Cerrahpasa Medical Faculty, University of Istanbul, Istanbul, Turkey
| | - Vedat Hamuryudan
- Division of Rheumatology, Department of Medicine, Cerrahpasa Medical Faculty, University of Istanbul, Istanbul, Turkey
| | - Huri Ozdogan
- Division of Rheumatology, Department of Medicine, Cerrahpasa Medical Faculty, University of Istanbul, Istanbul, Turkey.
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Chantarogh S, Vilaiyuk S, Tim-Aroon T, Worawichawong S. Clinical improvement of renal amyloidosis in a patient with systemic-onset juvenile idiopathic arthritis who received tocilizumab treatment: a case report and literature review. BMC Nephrol 2017; 18:159. [PMID: 28499374 PMCID: PMC5429510 DOI: 10.1186/s12882-017-0573-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 05/05/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Juvenile idiopathic arthritis (JIA) is a common rheumatic disease in children and adolescents. Although JIA may cause secondary amyloidosis, this is a rare complication in patients with JIA and other rheumatic diseases. Many previous studies have revealed that common heterozygous or homozygous mutations in the MEFV gene are associated with systemic-onset JIA (SJIA). CASE PRESENTATION We herein report a case involving a 19-year-old female patient with difficult-to-control SJIA. She developed progressive proteinuria without clinical signs or symptoms of edema. Renal amyloidosis was diagnosed by renal pathologic examination, which demonstrated deposition of eosinophilic amorphous material in the interlobular arteries, arterioles, and interstitium. Electron microscopy showed fibrillary material deposits with a diameter of 8 to 10 nm. A heterozygous E148Q mutation in the MEFV gene was identified. Conventional disease-modifying anti-rheumatic drugs and etanercept had been used to treat the SJIA, but the disease could not be controlled. Therefore, we decided to start tocilizumab to control the disease activity. However, the patient was unable to receive a standard dose of tocilizumab in the early period of treatment because of socioeconomic limitations. Her disease course was still active, and proteinuria was found. Therefore, tocilizumab was increased to a dose of 8 mg/kg every 2 weeks (standard dose of SJIA), and the patient exhibited a clinical response within 3 months. CONCLUSION Refractory SJIA associated with renal amyloidosis is an uncommon cause of proteinuria in adolescents. Tocilizumab may be a beneficial treatment for renal amyloidosis in patients with SJIA.
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Affiliation(s)
- Songkiat Chantarogh
- Division of Nephrology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Postal address: 270, Rama 6 Road, Phayathai, Ratchathewi, Bangkok, 10400, Thailand.
| | - Soamarat Vilaiyuk
- Division of Rheumatology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Postal address: 270, Rama 6 Road, Phayathai, Ratchathewi, Bangkok, 10400, Thailand
| | - Thipwimol Tim-Aroon
- Division of Medical Genetics, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Postal address: 270, Rama 6 Road, Phayathai, Ratchathewi, Bangkok, 10400, Thailand
| | - Suchin Worawichawong
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Postal address: 270, Rama 6 Road, Phayathai, Ratchathewi, Bangkok, 10400, Thailand
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Nienhuis HLA, Bijzet J, Hazenberg BPC. The Prevalence and Management of Systemic Amyloidosis in Western Countries. KIDNEY DISEASES 2016; 2:10-9. [PMID: 27536687 DOI: 10.1159/000444206] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 01/20/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Amyloidosis has been a mystery for centuries, but research of the last decennia has clarified many of the secrets of this group of diseases. A protein-based classification of amyloidosis helps to understand problems that were part of the obsolete clinical classification in primary, secondary, and familial amyloidosis. All types of amyloid are secondary to some underlying precursor-producing process: each type is caused by a misfolded soluble precursor protein that becomes deposited as insoluble amyloid fibrils. SUMMARY The incidence of amyloidosis is not well documented, but probably falls between 5 and 13 per million per year. Prevalence data are scarce, but one UK study indicates about 20 per million inhabitants. Amyloidosis can be localized (amyloid deposited in the organ or tissue of precursor production) or systemic (amyloid at one or more sites distant from the site of precursor production). The major systemic types of amyloidosis are AL (associated with a light chain-producing plasma cell dyscrasia), AA (associated with longstanding inflammation), wild-type ATTR (associated with normal transthyretin and old age), and hereditary ATTR (associated with a transthyretin mutation) amyloidosis. Imaging techniques, such as cardiac ultrasound, magnetic resonance imaging, bone scintigraphy, and serum amyloid P component scintigraphy, are useful both for diagnosing amyloidosis and for assessing disease severity. Serologic markers are useful for detecting organ disease and disease monitoring during follow-up. Current treatment modalities are directed against the ongoing supply of precursor proteins and thereby aim to stop further accumulation of amyloid. Novel treatment modalities, such as interference with amyloid formation and even removal of amyloid, are being studied. A well-thought and planned monitoring during follow-up helps to assess the effect of treatment and to early detect possible progression of amyloidosis. KEY MESSAGES Clinical management comprises histologic proof of amyloid, evidence of systemic deposition, reliable typing, precursor assessment, severity of organ disease, risk assessment and prognosis, choice of treatment, and planned monitoring during follow-up. FACTS FROM EAST AND WEST (1) AL amyloidosis is the most prevalent type of amyloidosis accounting for 65% of the amyloidosis-diagnosed patients in the UK and for 93% of the amyloidosis-diagnosed patients in China. The predisposition of men over women to develop AL amyloidosis might be higher in China than in Western countries (2:1 vs. 1.3:1). Both in the East and West, incidence increases with age. At the time of diagnosis, edema is twice as frequent and the proportion of renal involvement is higher in Chinese compared to Western patients. (2) Melphalan followed by autologous stem cell transplantation (ASCT) is the current standard therapy but is restricted to eligible patients. The efficacy and safety of bortezomib combined with dexamethasone were proven in Western patients and recently confirmed in a Chinese cohort. Recent studies in China and the US indicate that bortezomib induction prior to ASCT increases the response rate. Thalidomide and lenalidomide have shown benefit, but toxicity and lack of clinical evidence exclude these agents from first-line therapy. The green tea extract epigallocatechin-3-gallate is under investigation as an inhibitor of AL amyloid formation and a compound that might dissolve amyloid.
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Affiliation(s)
- Hans L A Nienhuis
- Department of Rheumatology & Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Johan Bijzet
- Department of Rheumatology & Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Bouke P C Hazenberg
- Department of Rheumatology & Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Woerner A, von Scheven-Gête A, Cimaz R, Hofer M. Complications of systemic juvenile idiopathic arthritis: risk factors and management recommendations. Expert Rev Clin Immunol 2015; 11:575-88. [PMID: 25843554 DOI: 10.1586/1744666x.2015.1032257] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Systemic juvenile idiopathic arthritis (SJIA) is an inflammatory condition characterized by fever, lymphadenopathy, arthritis, rash and serositis. Systemic inflammation has been associated with dysregulation of the innate immune system, suggesting that SJIA is an autoinflammatory disorder. IL-1 and IL-6 play a major role in the pathogenesis of SJIA, and treatment with IL-1 and IL-6 inhibitors has shown to be highly effective. However, complications of SJIA, including macrophage activation syndrome, limitations in functional outcome by arthritis and long-term damage from chronic inflammation, continue to be a major issue in SJIA patients' care. Translational research leading to a profound understanding of the cytokine crosstalk in SJIA and the identification of risk factors for SJIA complications will help to improve long-term outcome.
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Affiliation(s)
- Andreas Woerner
- Pediatric Rheumatology, University of Basel, University Children's Hospital, Basel, Switzerland
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Courties A, Grateau G, Philippe P, Flipo RM, Astudillo L, Aubry-Rozier B, Fabreguet I, Fahd W, Fain O, Guggenbuhl P, Hachulla E, Papo T, Richez C, Sibilia J, Morel J, Berenbaum F, Sellam J. AA amyloidosis treated with tocilizumab: case series and updated literature review. Amyloid 2015; 22:84-92. [PMID: 25585627 DOI: 10.3109/13506129.2014.1002031] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND In published case reports, tocilizumab (TCZ) has shown good efficacy for AA amyloidosis in almost all patients. We investigated the efficacy and safety of TCZ in AA amyloidosis in a multicentre study of unselected cases. METHODS We e-mailed rheumatology and internal medicine departments in France, Switzerland and North Africa by using the Club Rhumatismes Inflammation (CRI) network and the French TCZ registry, Registry RoAcTEmra (REGATE), to gather data on consecutive patients with histologically proven AA amyloidosis who had received at least one TCZ infusion. Efficacy was defined as a sustained decrease in proteinuria level and/or stable or improved glomerular filtration rate (GFR) and by TCZ maintenance. RESULTS We collected 12 cases of AA amyloidosis treated with TCZ as monotherapy (mean age of patients 63 ± 16.2 years, amyloidosis duration 20.6 ± 31.3 months): eight patients had rheumatoid arthritis (RA), six with previous failure of anti-tumor necrosis factor α (anti-TNF-α) therapy. In total, 11 patients had renal involvement, with two already on hemodialysis (not included in the renal efficacy assessment). For the nine other patients, baseline GFR and proteinuria level were 53.6 ± 32.8 mL/min and 5 ± 3.3 g/24 h, respectively. The mean follow-up was 13.1 ± 11 months. TCZ was effective for six of the eight RA patients (87.5%) according to European League Against Rheumatism response criteria (four good and two moderate responders). As expected, C-reactive protein (CRP) level decreased with treatment for 11 patients. Renal amyloidosis (n = 9) progressed in three patients and was stabilized in three. Overall, three patients showed improvement, with sustained decrease in proteinuria level (42%, 82% and 96%). Baseline CRP level was higher in subsequent responders to TCZ than other patients (p = 0.02). Among the six RA patients with previous anti-TNF-α therapy, amyloidosis was ameliorated in one and stabilized in three. Three serious adverse events occurred (two diverticulitis and one major calciphylaxia due to renal failure). Finally, 7 of 12 (58%) patients continued TCZ. CONCLUSIONS The efficacy of TCZ for AA amyloidosis varies depending on the inflammatory status at treatment onset. Discrepancies between our study of unselected consecutive patients and reported cases may be due to publication bias. These results support further prospective trials of TCZ for AA amyloidosis.
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Affiliation(s)
- Alice Courties
- Rheumatology Department, Saint-Antoine Hospital, Inserm UMR S_938, UPMC, Univ Paris 06, Assistance Publique-Hôpitaux de Paris (AP-HP), Inflammation-Immunopathology-Biotherapy Departement (DHU i2B) , Paris , France
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Hashizume M, Ohsugi Y. IL-6 as a target in autoimmune disease and inflammation. Nihon Yakurigaku Zasshi 2014; 144:172-7. [PMID: 25312286 DOI: 10.1254/fpj.144.172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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12
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Therapeutic Benefits of Tocilizumab Vary in Different Organs of a Patient with AA Amyloidosis. Case Rep Nephrol 2014; 2014:823093. [PMID: 25197587 PMCID: PMC4145365 DOI: 10.1155/2014/823093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/16/2014] [Accepted: 07/17/2014] [Indexed: 12/19/2022] Open
Abstract
Systemic reactive AA amyloidosis is a life-threatening complication of chronic inflammatory diseases. Anti-interleukin-6 receptor, tocilizumab (TCZ), has been shown to improve clinical symptoms of patients with AA amyloidosis, accompanied with regression of the amyloid deposition. We report a case of AA amyloidosis evaluated by histology of multiple organs before and after TCZ treatment. A woman in her 60s with rheumatoid arthritis was referred to our hospital because of cardiac and renal dysfunction. A gastric and renal biopsy revealed the deposition of AA amyloid, and echocardiography revealed concentric left ventricular hypertrophy. Her estimated glomerular filtration rate was decreased to 8.6 mL/min/1.73 m2, and B-type natriuretic peptide, C-reactive protein, and serum amyloid A protein were significantly elevated. TCZ treatments markedly decreased her serum amyloid A protein and C-reactive protein levels, but hemodialysis was required 1 year later. Endoscopic gastric rebiopsy 3 years after initiation of TCZ treatments revealed the regression of amyloid deposition and echocardiography revealed improvement of her left ventricular hypertrophy. However, a renal rebiopsy revealed that the amyloid deposition had not regressed. In conclusion, these observations suggest that the therapeutic effects of TCZ can vary among organs in patients with AA amyloidosis.
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Tanaka T, Hishitani Y, Ogata A. Monoclonal antibodies in rheumatoid arthritis: comparative effectiveness of tocilizumab with tumor necrosis factor inhibitors. Biologics 2014; 8:141-53. [PMID: 24741293 PMCID: PMC3984066 DOI: 10.2147/btt.s37509] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by persistent joint inflammation, systemic inflammation, and immunological abnormalities. Because cytokines such as tumor necrosis factor (TNF)-α and interleukin (IL)-6 play a major role in the development of RA, their targeting could constitute a reasonable novel therapeutic strategy for treating RA. Indeed, worldwide clinical trials of TNF inhibiting biologic disease modifying antirheumatic drugs (bDMARDs) including infliximab, adalimumab, golimumab, certolizumab pegol, and etanercept as well as the humanized anti-human IL-6 receptor antibody, tocilizumab, have demonstrated outstanding clinical efficacy and tolerable safety profiles, resulting in worldwide approval for using these bDMARDs to treat moderate to severe active RA in patients with an inadequate response to synthetic disease modifying antirheumatic drugs (sDMARDs). Although bDMARDs have elicited to a paradigm shift in the treatment of RA due to the prominent efficacy that had not been previously achieved by sDMARDs, a substantial percentage of patients failed primary or secondary responses to bDMARD therapy. Because RA is a heterogeneous disease in which TNF-α and IL-6 play overlapping but distinct pathological roles, further studies are required to determine the best use of TNF inhibitors and tocilizumab in individual RA patients.
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Affiliation(s)
- Toshio Tanaka
- Department of Clinical Application of Biologics, Osaka University Graduate School of Medicine, Osaka University, Osaka, Japan ; Department of Immunopathology, WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Yoshihiro Hishitani
- Department of Respiratory Medicine, Allergy and Rheumatic Diseases, Osaka University Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Atsushi Ogata
- Department of Immunopathology, WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan ; Department of Respiratory Medicine, Allergy and Rheumatic Diseases, Osaka University Graduate School of Medicine, Osaka University, Osaka, Japan
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Kukuy O, Livneh A, Ben-David A, Kopolovic J, Volkov A, Shinar Y, Holtzman E, Dinour D, Ben-Zvi I. Familial Mediterranean fever (FMF) with proteinuria: clinical features, histology, predictors, and prognosis in a cohort of 25 patients. J Rheumatol 2013; 40:2083-7. [PMID: 24128782 DOI: 10.3899/jrheum.130520] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Reactive (AA) amyloidosis may complicate familial Mediterranean fever (FMF), the prototype of autoinflammatory diseases. Thus, proteinuria in FMF is commonly viewed as resulting from amyloidosis, and kidney biopsy is deemed superfluous. However, nephropathy other than amyloidosis has been described in FMF, but its rate and distinctive characteristics are unknown. Our aim was to determine the rate and underlying pathology of FMF-related nonamyloidotic proteinuria and compare its clinical course, demographic, and genetic features to those of FMF-amyloid nephropathy. METHODS This study is a retrospective analysis of data from patients with FMF undergoing kidney biopsy for proteinuria above 0.5 g/24 h, over 10 years (2001-2011). Clinical, laboratory, genetic, and pathology data were abstracted from patient files. Biopsies were viewed by an experienced pathologist, as necessary. RESULTS Of the 25 patients referred for kidney biopsy, only 15 (60%) were diagnosed with amyloid kidney disease (AKD), and 10 were diagnosed with another nephropathy. The AKD and nonamyloid kidney disease (NAKD) groups were comparable on most variables, but showed distinct characteristics with regard to the degree of proteinuria (6.45 ± 4.3 g vs 2.14 ± 1.6 g, p = 0.006), rate of severe FMF (14 vs 5 patients, p = 0.022), and rate of development of end stage renal disease (73.3% vs 20%, p = 0.015), respectively. CONCLUSION NAKD is common in FMF and, compared to amyloidosis, it is featured with milder course and better prognosis. Contrary to common practice, it is highly recommended to obtain a kidney biopsy from patients with FMF and proteinuria more than 0.5 g/24 h.
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Affiliation(s)
- Olga Kukuy
- From the Institute of Nephrology and Hypertension, Sheba Medical Center, Tel Hashomer; Heller Institute of Medical Research, Sheba Medical Center, Tel Hashomer; Department of Pathology, Sheba Medical Center, Tel Hashomer; Department of Pathology, Hadassah-Hebrew University Medical Center, Jerusalem; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; The Dr. Pinchas Borenstein Talpiot Medical Leadership Program 2012, Chaim Sheba Medical Center, Tel Hashomer, Israel
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Abstract
Amyloidosis is the name for protein-folding diseases characterized by extracellular deposition of a specific soluble precursor protein that aggregates in the form of insoluble fibrils. The classification of amyloidosis is based on the chemical characterization of the precursor protein. Deposition of amyloid is localized or systemic. The 4 main types of systemic amyloidosis are AL, AA, ATTR, and Aβ2M type. A schematic approach is proposed for the clinical management of systemic amyloidosis. The importance of typing amyloid with confidence, the usefulness of imaging techniques, the principles of treatment, and the need for well-planned treatment monitoring during follow-up are discussed.
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Affiliation(s)
- Bouke P C Hazenberg
- Department of Rheumatology & Clinical Immunology, AA21, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB Groningen, The Netherlands.
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