Abstract
Introduction
Drug-induced sarcoidosis-like disease is a rare side effect of anti-tumor necrosis factor (anti-TNF) agents in rheumatoid arthritis (RA) patients. The most commonly involved organs in such condition are the lungs, skin, and lymph nodes. The aim of this study is to report the number of cases and the clinical manifestations of sarcoidosis induced by anti-TNF in our RA UCLouvain Brussels cohort.
Methods
All case records of RA patients ever treated with a TNF inhibitor and presenting anti-TNF induced sarcoidosis in our rheumatology centers from 2000 to 2021 were retrospectively reviewed.
Results
Our RA UCLouvain Brussels cohort includes 2492 patients. Among them, 697 patients have been or are exposed to a TNF inhibitor. Only four patients with sarcoidosis induced by anti-TNF were identified and reviewed. Patient 1 was classified as incomplete Heerfordt syndrome. Patient 2 was a case of sarcoid-like granulomatosis manifesting as life-threatening hypercalcemia, acute kidney injury and atypical parenchymal pneumopathy. Patients 3 and 4 developed pulmonary sarcoidosis with hilar adenopathies. The TNF inhibitor was etanercept for the first three patients and infliximab for the last one. The time occurrence of sarcoidosis was highly variable after anti-TNF exposure. All patients recovered after glucocorticoid treatment and the discontinuation of the anti-TNF agent.
Conclusions
This case highlights this rare paradoxical side effect and the variability of the clinical presentation. Further studies should analyze the immunopathology of such conditions.
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These cases of anti-TNF-induced sarcoidosis highlight this rare paradoxical side effect and the variability of clinical presentation. |
Introduction
Biological disease-modifying antirheumatic drugs (bDMARDs) have considerably improved the prognosis of rheumatoid arthritis (RA). The first and major bDMARDs used in RA were the tumor necrosis factor inhibitors (anti-TNF agent). Five original molecules and more recently many biosimilars are actually available: three monoclonal anti-TNF-a full IgG1 antibodies infliximab, adalimumab, and golimumab, PEGylated Fab’ fragment of anti-TNF-a antibody certolizumab pegol, extracellular domain of TNF receptor 2/IgG1-Fc fusion protein etanercept [1].
The use of anti-TNF agents is considered safe but a higher risk of infections is reported [2]. Among infections, reactivation of latent tuberculosis is possible and requires a strict evaluation before initiation with prophylaxis in positive cases. Another granulomatosis disease, sarcoidosis, is a rare side effect of anti-TNF agents and has also been observed with other drugs such as immune checkpoint inhibitors, antiretroviral therapy, and interferons [3]. This condition is clinically and pathologically indistinguishable from a classical sarcoidosis.
The etiology of sarcoidosis remains unknown and related to multiple factors. It is thought that a combination of environmental context on predisposed genetic background lead to the creation of granuloma around poorly soluble antigens [4]. The disease more often affects the lungs, skin, and lymph nodes but can infiltrate any organ. The clinical presentation and prognosis depend on the severity of inflammation and the involved organ. The course of the disease may range from spontaneously resolutive mild symptoms to life-threatening events [5].
Treatment of sarcoidosis mainly includes corticosteroids, combined eventually with immunosuppressive agents and more recently biological agents such as anti-TNF [6].
Drug-induced sarcoidosis is therefore a paradoxical side effect such as anti-TNF-induced psoriasis [7]. The discontinuation of the anti-TNF is the first recommendation combined to a standard care of the sarcoidosis.
The aim of this report was to analyze the rate of anti-TNF induced sarcoidosis in our RA UCLouvain Brussels cohort and to report the clinical aspects, treatment, and follow-up.
Methods
We performed a retrospective analysis of our RA UCLouvain Brussels cohort. Inclusion criteria were RA patients fulfilling the 1987 and/or 2010 RA classification criteria. A total of 2492 dossiers of RA patients treated from November 1999 to October 2021 were reviewed. Among them, all 697 RA patients treated at any time with an anti-TNF agent were included.
The patients with high clinical suspicion of sarcoidosis or pathological proof of the disease were compiled. RA patients with another inflammatory or infectious pulmonary condition were excluded.
Our RA UCLouvain Brussels cohort has been approved by our academic institution and our local ethic committee for different protocol but not needed for such retrospective analysis.
Results
Four patients treated by anti-TNF agent developed an anti-TNF induced sarcoidosis. They are listed and described below.
Patients Characteristics
The data are summarized in Tables 1 and 2.
Patient 1: A 38-year-old female patient with seronegative RA presented with a painful swelling of bilateral parotids and complained of dyspnea without coughing.
She had been treated by etanercept for a total of 77 months with two interruptions, the first after achieving remission, and the second for pregnancy. No additional cDMARD (classical disease-modifying antirheumatic drugs) at the time, no steroid treatment.
A parotid biopsy showed noncaseing granulomas. The chest CT revealed pulmonary reticulonodular infiltrates. Additional extrapulmonary involvement in the spleen, muscle, and multiples adenopathies were found by FDG-Pet CT.
High angiotensin-converting enzyme (ACE) and elevated C-reactive protein (CRP) were shown in the laboratory test.
Etanercept was withdrawn and a treatment with three IV-pulses and oral glucosteroids was started and tapered over 4 months. Despite the patient’s reluctance, we added methotrexate to the treatment with favorable evolution and absence of either relapse of the sarcoidosis or RA flare after 8 months of follow-up.
Patient 2: A 61-year-old female patient presented with acute confusion, flu-like symptoms, and global weakness. She complained of dysphagia leading to a weight loss of 3 kg after 1 week, fever, and dyspnea without coughing. Her past medical history consisted of 22 years RA that was treated with steroids, methotrexate for 12 years, and for about 10 years with etanercept.
On clinical examination, the patient was bradypsychic and under oxygenotherapy. Pulmonary auscultation revealed basal crepitants were heard. Laboratory test showed a raised CRP, non-regenerative anemia, thrombocytopenia, and severe hypercalcemia with acute kidney injury. ACE was normal. Immunological and infectious serologies were negative.
CT scan of the thorax showed interstitial lung disease with a “crazy paving pattern”, the bronchial lavage remained aseptic and did not contribute for the diagnosis. A renal biopsy did not reveal any granulomas; a lower lip salivary gland biopsy was not performed. Without pathological evidence, we nevertheless conclude it to be a drug-induced sarcoidosis-like disease.
Cessation of the anti-TNF treatment and methotrexate with continuation of the same dose of prednisolone on top of quick care of the hypercalcemia led to complete clinical and biological recovery. A control thorax CT scan later revealed light pulmonary fibrosis with no sign of active sarcoidosis.
Methotrexate was reinitiated at a lower dose 6 months later. During 4 years of follow-up, the patient remained with a low disease activity score and no relapse of sarcoidosis was reported. Steroids were not withdrawn but tapered.
Patient 3: A 66-year-old male with RA treated by steroids, etanercept for over 2 years and methotrexate for 9 years presented with fatigue and dyspnea. He underwent chest X-ray, where an interstitial infiltrate and hilar adenopathies were found. In addition, blood testing revealed high CRP without any other abnormality. Lymph node biopsy during mediastinoscopy showed typical noncaseing granulomas. The patient recovered progressively after anti-TNF therapy, methotrexate discontinuation, and oral steroid treatment.
A flare of RA was observed 2 years after the withdrawal of the anti-TNF agent and abatacept combined with methotrexate were initiated. The patient is still in remission after 9 years of follow-up.
Patient 4: A 73-year-old female RA patient treated and well controlled by infliximab and methotrexate presented with long-lasting couch. No fever or other complaints were observed. Laboratory findings showed only a slightly elevated CRP.
Chest CT scan revealed a sarcoid-like pattern with hilar adenopathies. Withdrawal of the infliximab therapy with moderate dose of oral steroids was sufficient to improve the patient’s condition. Infliximab was first switched to abatacept with no efficacy, then to rituximab with a progressive response. No clinical relapse of sarcoidosis was observed but persistence of pulmonary signs was described on CT.
Discussion
In our large cohort, only four cases of sarcoidosis induced by an anti-TNF agent were observed during a 20-year period. The incidence of this side effect is unknown. We have analyzed all published manuscripts on this topic. Thirty-nine cases of RA patients who developed anti-TNF induced granulomatosis were found, mainly female patients treated with etanercept [8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32]. The etiology of sarcoidosis is still unknown and has been linked to infectious agents like Mycobacterium, Cutibacterium, Propionibacterium species, organic agents, and specific HLA predisposition [4, 33]. Sarcoidosis patients may present similar patterns of cellular immune dysregulation observed in auto-immune disease like RA. It could be present with other autoimmune diseases such as Sjögren’s syndrome [34] but the association with RA is very rare. Our report confirms the facilitating role of TNF inhibition to develop sarcoidosis. This is a paradox since TNF blood level is correlated to disease severity [35]. TNF-α is also involved in the granuloma’s formation and maintenance, and produced, among others, by pulmonary monocytes and macrophages. Blocking TNF is therefore a new and potent treatment of severe and refractory sarcoidosis [6]. However, we know that TNF inhibitors are also associated with the reactivation of latent tuberculosis, another granulomatosis disease. TNF-induced psoriasis, another paradoxical phenomenon, has also been described in RA patients [7]. The first observation of TNF agent-induced sarcoidosis was reported in 2002 [14]. In France, ten cases including four RA patients were reported by the Club Rhumatismes et Inflammation (CRI), with a calculated incidence of 1/2800. The incidence in our cohort is 4/700, which demonstrates that a systematic review of RA cohort or registries would reveal a larger number of cases. The mean time of anti-TNF agent exposure is highly variable in the literature and vary in our cases between 7 and 123 months. This suggests that other triggers like an infectious agent may be associated with this paradoxical disease. The clinical presentation in terms of organ involvement and severity is very heterogeneous. One of our four cases was critically ill with severe hypercalcemia, bicytopenia, and kidney failure. This case was admitted to the intensive care unit. The main treatment consideration is the discontinuation of the anti-TNF agent. Methotrexate, an active treatment for sarcoidosis, has not been evaluated in such conditions and we consider that methotrexate should be maintained or considered in these patients [6]. Some reports have indicated that a restart of an anti-TNF is possible but some relapses have been reported [28]. We decided not to re-challenge any of our four patients with an anti-TNF agent as there are other biotherapy available for RA.
The strength of our review is the strict analysis of a large prospective RA cohort treated with a TNF inhibitor. The limitation is the absence of blood and tissue analysis to better understand such rare associations.
In conclusion, sarcoidosis during anti-TNF therapy in RA patients is not uncommon. The etiology is multifactorial, but the role of the therapy is to accelerate such a paradoxical reaction. Clinicians should be vigilant when patients present fever, asthenia, dyspnea, or granulomatosis lesions. The differential diagnosis remains tuberculosis. Future research is needed to better define the incidence and to analyze the associative role of infectious agents.
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Acknowledgements
We thank the patients for their contribution for this study.
Funding
The study and the journal’s Rapid Service Fee were funded by the authors.
Authorship
All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.
Authors Contributions
All authors X T, L B, S D, E S, T S, A A and P D analyzed and interpreted the patients data; X T and P D in addition were major contributors in writing the manuscript. All authors X T, L B, S D, E S, T S, A A and P D read and approved the final manuscript.
Disclosures
Xavier Theunssens, Laura Bricman, Stéphanie Dierckx, Emilie Sapart, Tatiana Sokolova, Aleksandra Avramovska and Patrick Durez have nothing to disclose.
Compliance with Ethics Guidelines
This retrospective non-interventional study was retrospectively registered with local ethics approval. No additional consent form needs for this retrospective non-interventional SOC study. Institutional consent form was used for publication.
Data Availability
All data were collected in medical record files of Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium. The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Theunssens, X., Bricman, L., Dierckx, S. et al. Anti-TNF Induced Sarcoidosis-Like Disease in Rheumatoid Arthritis Patients: Review Cases from the RA UCLouvain Brussels Cohort. Rheumatol Ther 9, 763–770 (2022). https://doi.org/10.1007/s40744-022-00424-1
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DOI: https://doi.org/10.1007/s40744-022-00424-1