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The treatment of interstitial lung disease (ILD) in the context of autoimmune diseases: Rheumatoid arthritis and idiopathic inflammatory myositis
El tratamiento de la enfermedad pulmonar intersticial en el escenario de las enfermedades autoinmunes: artritis reumatoide y miopatías inflamatorias
Mayra Mejíaa, Daphne Rivero-Gallegosb, Jorge Rojas-Serranoc,d,
Corresponding author
jrojas@iner.gob.mx

Corresponding author.
a Head of the Clinic of Diseases of the Pulmonary Interstitium, National Institute of Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
b Head of the Rheumatology Clinic, National Institute of Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
c Head of the Rheumatology Clinic and Internal Medicine, National Institute of Respiratory Diseases, Ismael Cosío Villegas, Mexico City, Mexico
d Master's and Doctoral Program in Medical Sciences, Faculty of Medicine, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">In this article&#44; we will mention the essential aspects in the management of ILD associated with some systemic autoimmune diseases such as rheumatoid arthritis &#40;RA&#41; and inflammatory myopathies &#40;IM&#41;&#44; always supported with the best available evidence&#44; and mention aspects that&#44; based on the experience gained&#44; are relevant to us in the management of these conditions&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Treatment of rheumatoid arthritis-associated interstitial lung disease &#40;RA-ILD&#41;</span><p id="par0010" class="elsevierStylePara elsevierViewall">The first step in adequately treating a patient with RA-ILD is proper diagnosis&#46; A multidisciplinary evaluation should be performed<a class="elsevierStyleCrossRef" href="#bib0265"><span class="elsevierStyleSup">1</span></a> between the rheumatology team&#44; pulmonology&#44; and experts in the interpretation of imaging studies and pulmonary pathology&#44; to classify the pattern of lung damage according to ATS&#47;ERS recommendations&#46;<a class="elsevierStyleCrossRef" href="#bib0270"><span class="elsevierStyleSup">2</span></a> It is essential to define whether the patient has an interstitial pulmonary process or any differential diagnoses that may confuse the diagnosis&#46; The above is easy to write but challenging to execute in practice&#44; as it requires medical personnel with experience evaluating ILD&#46; Referral to a center specialized in caring for this group of patients should always be considered&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">Once the diagnosis of ILD has been confirmed and classified according to the pattern of damage&#44; two fundamental pillars should be considered in the management of RA-ILD &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#58;<ul class="elsevierStyleList" id="lis0005"><li class="elsevierStyleListItem" id="lsti0005"><span class="elsevierStyleLabel">1&#46;</span><p id="par0020" class="elsevierStylePara elsevierViewall">Strict control of RA disease activity</p></li><li class="elsevierStyleListItem" id="lsti0010"><span class="elsevierStyleLabel">2&#46;</span><p id="par0025" class="elsevierStylePara elsevierViewall">Treatment with anti-fibrotic drugs</p></li></ul></p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">The strict control of RA disease activity</span><p id="par0030" class="elsevierStylePara elsevierViewall">One of the most important developments is that high RA activity has been associated with mortality in RA-ILD&#46;<a class="elsevierStyleCrossRefs" href="#bib0275"><span class="elsevierStyleSup">3&#44;4</span></a> Practically all the recently published RA-ILD cohorts have reported an increase in survival&#44; going from a median survival of 3&#46;2 years<a class="elsevierStyleCrossRefs" href="#bib0285"><span class="elsevierStyleSup">5&#8211;7</span></a> to a median survival of about eight years&#46;<a class="elsevierStyleCrossRefs" href="#bib0300"><span class="elsevierStyleSup">8&#8211;10</span></a> In other words&#44; tight control of RA activity has increased survival&#59; therefore&#44; the first step in treating a patient with RA-ILD is to carry out a strategy with the target of remission of RA disease activity&#44; the so-called treat-to-target &#40;T2T&#41; strategy&#46;<a class="elsevierStyleCrossRef" href="#bib0315"><span class="elsevierStyleSup">11</span></a></p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">What drugs are used to treat RA activity&#63;</span><p id="par0035" class="elsevierStylePara elsevierViewall">Due to the risk of so-called methotrexate &#40;MTX&#41; pneumonitis&#44; it has been proposed to use another conventional disease-modifying drug&#44; when possible&#44; in treating patients with RA-ILD&#46;<a class="elsevierStyleCrossRef" href="#bib0265"><span class="elsevierStyleSup">1</span></a> This strategy ignores recent evidence&#46; All the papers published in recent years describe a protective effect for the survival of patients treated with methotrexate compared to those who did not receive this drug&#46;<a class="elsevierStyleCrossRefs" href="#bib0305"><span class="elsevierStyleSup">9&#44;12&#44;13</span></a> The effect of MTX is not limited to a better prognosis in survival but is also strongly associated with the protection of lung function&#44; being a factor associated with a lower risk of lung disease progression &#40;OR&#58; 0&#46;26&#44; 95&#37; CI&#58; 0&#46;09&#8211;0&#46;76&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0320"><span class="elsevierStyleSup">12</span></a> Recently&#44; Chang et al&#46; confirmed that not receiving methotrexate is strongly associated with the risk of rapid lung disease progression or death &#40;RR&#58; 8&#46;07&#44; 95&#37; CI&#58; 1&#46;82&#8211;35&#46;77&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0325"><span class="elsevierStyleSup">13</span></a> Some would argue that MTX may give a risk of MTX pneumonitis&#44; an idiosyncratic reaction to the drug&#46; Sparks et al&#46;<a class="elsevierStyleCrossRef" href="#bib0330"><span class="elsevierStyleSup">14</span></a> reported a risk of 0&#46;003 for <span class="elsevierStyleItalic">possible</span> methotrexate pneumonitis in subjects without RA and a high risk for cardiovascular disease treated with methotrexate&#46; Two authors of this article &#40;MM &#38; JRS&#41; have collaborated for 17 years at a national referral center of pulmonary disease&#44; where we evaluated multiple cases of possible pneumonitis due to MTX without being able to diagnose a single definitive case of pneumonitis due to this drug&#46; On the other hand&#44; in a socioeconomic environment with limited access to biological or synthetic disease modifiers&#44; MTX is a feasible option to treat RA activity in patients with RA-ILD&#46; Therefore&#44; recommending not to use a drug associated with a better prognosis in survival for fear of a less than 1&#37; risk for MTX pneumonitis is entirely wrong&#46; In our institution&#44; MTX is always part of the initial management of all patients with RA-ILD&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">There are other therapeutic options besides MTX</span><p id="par0040" class="elsevierStylePara elsevierViewall">Before considering which biologic or synthetic DMARD to use&#44; including MTX&#44; it should be clear that the real goal is to achieve remission of RA following a T2T strategy&#46; It is essential to mention that in case the clinician responsible for treating the patient with RA-ILD does not feel comfortable initiating MTX&#44; other options are available&#46; Among the therapeutic options&#44; we have leflunomide &#40;LFN&#41;<a class="elsevierStyleCrossRef" href="#bib0335"><span class="elsevierStyleSup">15</span></a> and biological agents such as rituximab &#40;RTX&#41; and abatacept &#40;ABA&#41;&#46; In the case of LFN&#44; our usual practice is to initiate combined treatment with MTX and LFN&#44; together with a variable dose of prednisone&#44; between 10<span class="elsevierStyleHsp" style=""></span>mg&#47;day and never more than 50<span class="elsevierStyleHsp" style=""></span>mg&#47;day with a stepwise reduction of the PDN dose&#46; Regarding the use of biological agents&#44; there is experience with ABA<a class="elsevierStyleCrossRefs" href="#bib0340"><span class="elsevierStyleSup">16&#8211;18</span></a> either as monotherapy&#44; in combination with MTX&#44; or combination with other synthetic DMARDs&#46; These studies are retrospective in nature and merely descriptive&#46; Based on these studies&#44; it has been proposed that ABA is an effective and safe option for treating RA-ILD&#46; RTX is also recommended as a therapeutic option in RA-ILD&#46;<a class="elsevierStyleCrossRefs" href="#bib0355"><span class="elsevierStyleSup">19&#8211;21</span></a> In our experience&#44; both biologics are suitable options for managing patients with RA-ILD&#59; there are small case series in which treatment with tocilizumab &#40;TCB&#41; is described with apparent control of both RA disease activity and lung function&#46;<a class="elsevierStyleCrossRef" href="#bib0370"><span class="elsevierStyleSup">22</span></a> Jak inhibitors have also been used to manage RA-ILD&#46;<a class="elsevierStyleCrossRefs" href="#bib0375"><span class="elsevierStyleSup">23&#44;24</span></a> Experience is limited&#44; but interestingly&#44; tofacitinib has been consistently associated with a lower incidence of RA-ILD&#46;<a class="elsevierStyleCrossRefs" href="#bib0385"><span class="elsevierStyleSup">25&#44;26</span></a> Therefore&#44; evaluating the safety and efficacy of this drug in RA-ILD in clinical trials seems relevant&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">According to some experts&#44; mycophenolate mofetil &#40;MMF&#41; has a role in managing RA-ILD&#46;<a class="elsevierStyleCrossRefs" href="#bib0395"><span class="elsevierStyleSup">27&#44;28</span></a> There is even information that MMF may be associated with lower mortality&#46;<a class="elsevierStyleCrossRef" href="#bib0310"><span class="elsevierStyleSup">10</span></a> In our center&#44; we do not use it&#59; in direct conversations with some who propose that MMF may be effective&#44; we know they use it with synthetic DMARDs or biologics&#46;</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Which drugs are not to use in the management of RA-ILD&#63;</span><p id="par0050" class="elsevierStylePara elsevierViewall">Azathioprine and cyclophosphamide are contraindicated in the management of RA-ILD&#46; In the current era&#44; neither drug has a role in managing the inflammatory joint disease of RA&#44; and are associated with increased mortality from pulmonary causes in this group of patients&#46;<a class="elsevierStyleCrossRef" href="#bib0310"><span class="elsevierStyleSup">10</span></a> There is reasonable doubt whether anti-TNF-alpha drugs are associated with a worse prognosis in RA-ILD&#46;<a class="elsevierStyleCrossRef" href="#bib0310"><span class="elsevierStyleSup">10</span></a> Our position is to adopt a pragmatic approach&#46; If a decision is about to escalate treatment in a patient with RA-ILD according to a T2T strategy&#44; we prefer ABA or RTX rather than an anti-TNF-alpha&#46; Suppose the patient is already on treatment with an anti-TNF alpha&#44; has no evidence of pulmonary deterioration&#44; and has achieved adequate control of RA activity&#58; in that case&#44; we do not make any therapeutic modification&#46;</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Use of glucocorticoids in RA-ILD</span><p id="par0055" class="elsevierStylePara elsevierViewall">The inflammation at the pulmonary level correlates with the ground-glass image on high-resolution chest tomography &#40;HRCT&#41; and may improve with glucocorticoids&#46;<a class="elsevierStyleCrossRef" href="#bib0405"><span class="elsevierStyleSup">29</span></a> Our working group described that patient with RA-ILD treated with glucocorticoids at a maximum daily dose of 50<span class="elsevierStyleHsp" style=""></span>mg prednisone&#47;day&#44; together with DMARDs&#44;<a class="elsevierStyleCrossRef" href="#bib0405"><span class="elsevierStyleSup">29</span></a> can improve in observed forced vital capacity &#40;FVC&#41; at six months after initiation of treatment&#44; with up to 15&#37; absolute difference&#46; This improvement correlates with decreased ground glass and consolidations observed on HRCT<a class="elsevierStyleCrossRef" href="#bib0405"><span class="elsevierStyleSup">29</span></a> &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46; However&#44; this improvement is not observed in fibrosing patterns&#59; on the contrary&#44; patients with RA-ILD with usual interstitial pneumonia &#40;UIP&#41; or fibrotic nonspecific interstitial pneumonia &#40;NSIP&#41; patterns may have a behavior of ILD&#44; such as progressive pulmonary fibrosis &#40;PPF&#41;&#46;<a class="elsevierStyleCrossRefs" href="#bib0270"><span class="elsevierStyleSup">2&#44;30</span></a></p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0060" class="elsevierStylePara elsevierViewall">In practice&#44; it is advisable to discuss with the imaging expert the degree of extension of the findings on HRCT compatible with inflammation and decide on treatment with glucocorticoid based on that&#46; If the extension is greater than 20&#37; according to the Goh scale&#44; there is no doubt that prednisone with a maximum dose of 50<span class="elsevierStyleHsp" style=""></span>mg&#47;day may benefit the patient&#46; In case of a lesser extent&#44; a dose between 20 to 50<span class="elsevierStyleHsp" style=""></span>mg of prednisone per day should be decided on a case-by-case basis&#46; Generally&#44; the initial dose is maintained for 4&#8211;6 weeks&#44; and then a gradual decrease of the glucocorticoid dose is initiated&#46; In office visits and daily consultations&#44; a frequent comment that one of the authors &#40;JRS&#41; makes to the medical team is that he has never regretted prescribing or increasing the prednisone dose in a patient with RA-ILD&#46; Still&#44; he has occasionally questioned whether to decrease or discontinue the dose&#46; Recently&#44; a literature citation that justify that comment was published&#46; Chang et al&#46;<a class="elsevierStyleCrossRef" href="#bib0325"><span class="elsevierStyleSup">13</span></a> reported that glucocorticoid use is strongly associated with protection against lung disease progression and&#47;or death &#40;RR&#58; 0&#46;28&#44; 95&#37; CI&#58; 0&#46;09&#8211;0&#46;81&#41;&#46; One explanation is that despite the adverse effects associated with glucocorticoid therapy&#44; judicious use of glucocorticoids in a patient with RA-ILD contributes to tighter control of RA activity&#44; reflected in the decreased inflammatory process in the lungs&#46;</p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">Treatment with anti-fibrotic drugs</span><p id="par0065" class="elsevierStylePara elsevierViewall">RA-ILD can behave like progressive PPF&#46; Recently&#44; Chang et al&#46;<a class="elsevierStyleCrossRef" href="#bib0325"><span class="elsevierStyleSup">13</span></a> reported that 64&#37; of patients with RA-ILD have progression of ILD during a 3-year follow-up period&#46; In addition&#44; they described risk factors associated with rapid progression of ILD and&#47;or mortality &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46; Briefly&#44; these are older age&#44; simultaneous diagnosis of RA and ILD&#44; an extension of &#8805;10&#37; of ILD on high-resolution chest CT &#40;HRCT&#41;&#44; and not having received methotrexate &#40;RR&#58; 8&#46;07&#44; 95&#37; CI&#58; 1&#46;82&#8211;35&#46;77&#41;&#46; Finally&#44; the use of glucocorticoids was associated with protection against the progression of ILD &#40;RR&#58; 0&#46;28&#44; 95&#37; CI&#58; 0&#46;09&#8211;0&#46;81&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0070" class="elsevierStylePara elsevierViewall">The concept of PPF has revolutionized the treatment of fibrosing ILD other than idiopathic pulmonary fibrosis &#40;IPF&#41;&#46; We now know that administering an antifibrotic drug &#40;nintedanib&#41; in a heterogeneous group of subjects with PPF&#44; which included subjects with RA-ILD&#44; can delay the progression of PPF regardless of the etiological process that caused the PPF&#46;<a class="elsevierStyleCrossRefs" href="#bib0415"><span class="elsevierStyleSup">31&#8211;33</span></a> Importantly&#44; nintedanib has a number needed to treat of 7 to prevent progression or death across the entire spectrum of PPF&#46;<a class="elsevierStyleCrossRef" href="#bib0420"><span class="elsevierStyleSup">32</span></a> Pirfenidone has been evaluated as an antifibrotic drug for treating RA-ILD&#46;<a class="elsevierStyleCrossRef" href="#bib0430"><span class="elsevierStyleSup">34</span></a> Although the clinical trial had to be stopped due to slow recruitment&#44; the results suggest that pirfenidone may delay the progression of RA-ILD&#46; Therefore&#44; antifibrotic therapy should be considered in RA-ILD patients&#44; especially in subjects with documented progression and with risk factors for rapid progression or death &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46;</p></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Treatment of IIM-ILD</span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Treatment of interstitial lung disease related to anti-synthetase syndrome &#40;ASSD-ILD&#41;</span><p id="par0075" class="elsevierStylePara elsevierViewall">Any adequate treatment begins with a correct diagnosis&#46; However&#44; in anti-synthetase syndrome &#40;ASSD&#41;&#44; there is a very confusing element from a rheumatological point of view&#58; many patients do not have muscular or articular manifestations&#46; And to make matters worse&#44; the antibody patterns associated with the worst prognosis&#44; such as PL7 and PL12&#44; are the ones with the lowest prevalence of these clinical signs&#46;<a class="elsevierStyleCrossRefs" href="#bib0435"><span class="elsevierStyleSup">35&#44;36</span></a> Therefore&#44; our first practical recommendation is that every patient with a NSIP with or without organizing pneumonia &#40;OP&#41;&#44; positive to anti-synthetase autoantibodies &#40;ASAB&#41;&#44; should be treated as ASSD despite not meeting the criteria for an inflammatory myopathy&#44; This recommendation is based on the fact that 85&#37; of patients with an ASAB-associated ILD have a NSIP or NSIP&#47;OP pattern&#44; and 76&#37; have improvement or stability pulmonary function with prednisone treatments along with immunosuppressants&#46;<a class="elsevierStyleCrossRef" href="#bib0445"><span class="elsevierStyleSup">37</span></a> However&#44; about 15&#37; of subjects with ASAB-positive ILD have an HRCT pattern compatible with UIP and may have a course of PPF&#46;<a class="elsevierStyleCrossRef" href="#bib0445"><span class="elsevierStyleSup">37</span></a></p><p id="par0080" class="elsevierStylePara elsevierViewall">In the setting&#44; multiple drugs have been reported to have a beneficial effect on lung disease progression&#44; and these reports are congruent with our clinical experience&#46;<a class="elsevierStyleCrossRefs" href="#bib0450"><span class="elsevierStyleSup">38&#44;39</span></a> However&#44; we do not want to neglect to mention that these drugs are generally used in combination&#46; For example&#44; MMF is reported to be effective&#44; but when reading the document carefully&#44; one notes that this drug was added to a background scheme&#46;<a class="elsevierStyleCrossRefs" href="#bib0460"><span class="elsevierStyleSup">40&#44;41</span></a> Taking the above into account&#44; we initiate in patients with ASSD-ILD a combined strategy&#44; which in most of them includes prednisone with doses no higher than 50<span class="elsevierStyleHsp" style=""></span>mg&#47;day and methotrexate 12&#46;5<span class="elsevierStyleHsp" style=""></span>mg per week&#44; and leflunomide 100<span class="elsevierStyleHsp" style=""></span>mg weekly cumulative dose&#46;<a class="elsevierStyleCrossRef" href="#bib0445"><span class="elsevierStyleSup">37</span></a> The prednisone dose is maintained for six weeks to initiate a tapering schedule&#59; upon reaching an amount of 10<span class="elsevierStyleHsp" style=""></span>mg per day&#44; the tapering is much slower and monitored for signs of relapse&#46; A valuable clinical data is to watch for the presence of the mechanic&#39;s hands or hiker&#39;s feet signs&#46; These correlate with ASSD activity at the pulmonary level&#44; and their presence may indicate a relapse of lung disease&#46; Several questions must be answered in treating patients with ASSD-ILD&#58; which scheme is the most effective and safe&#44; and are all candidates for rituximab or Jak inhibitors as a first therapeutic option&#63; These questions should be answered in clinical trials once we have a validated classification system for ASSD&#46; However&#44; 24&#37; of patients with ASSD-ILD have disease progression&#46;<a class="elsevierStyleCrossRef" href="#bib0445"><span class="elsevierStyleSup">37</span></a> The risk factors associated with PPF are older age at diagnosis&#44; UIP pattern&#44; and greater severity of lung disease&#44; as reflected in spirometry and DLCO results&#46; Another factor associated with progression is the presence of traction bronchiectasis in the middle lobe&#44; which reflects a fibrotic component&#46;<a class="elsevierStyleCrossRefs" href="#bib0445"><span class="elsevierStyleSup">37&#44;42</span></a> In our experience&#44; patients with UIP patterns that progress have a rapidly progressive feature&#44; so we suggest starting treatment with anti-fibrotic drugs as soon as possible&#46; The general treatment scheme is presented in <a class="elsevierStyleCrossRef" href="#fig0015">Fig&#46; 3</a>&#46;</p><elsevierMultimedia ident="fig0015"></elsevierMultimedia></span></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Anti-MDA5-positive dermatomyositis associated with interstitial lung disease &#40;MDA5-ILD&#41;</span><p id="par0085" class="elsevierStylePara elsevierViewall">This entity is considered a therapeutic challenge because of its poor response to treatment and high mortality&#44; reported from 33 to 66&#37; in the first six months after diagnosis&#46;<a class="elsevierStyleCrossRefs" href="#bib0475"><span class="elsevierStyleSup">43&#44;44</span></a> Therefore&#44; timely diagnosis and early initiation of aggressive immunosuppressive therapy are essential&#46; MDA5-ILD patients are at high risk of rapidly progressive lung disease &#40;RP-ILD&#41;&#44; which may present complications with increased mortality&#44; such as pneumo-mediastinum&#46; It has been estimated that 40 to 60&#37; of patients with MDA5&#43;-ILD have this behavior&#46;<a class="elsevierStyleCrossRefs" href="#bib0480"><span class="elsevierStyleSup">44&#44;45</span></a> The variables associated with a higher risk of RP-ILD are cutaneous manifestations&#44; high titers of anti-MDA5 levels&#44; and a more significant extension of pulmonary disease&#46;<a class="elsevierStyleCrossRef" href="#bib0490"><span class="elsevierStyleSup">46</span></a></p><p id="par0090" class="elsevierStylePara elsevierViewall">What would be the best therapeutic plan for these patients&#63; One of the best-described and evaluated schemes is triple immunosuppressive therapy combined with high-dose glucocorticoids as soon as possible<a class="elsevierStyleCrossRef" href="#bib0495"><span class="elsevierStyleSup">47</span></a> &#40;<a class="elsevierStyleCrossRef" href="#fig0020">Fig&#46; 4</a>&#41;&#46; It is important to emphasize that in the early stages of the disease&#44; there is diffuse alveolar damage &#40;DAD&#41;&#44; evidenced in high-resolution tomography &#40;HRCT&#41; as ground glass opacities with a patchy distribution&#46; At this stage&#44; the initiation of effective therapy could modify the rapidly progressive course&#46; If this first phase is not adequately treated&#44; a second phase characterized by respiratory deterioration&#44; the increased extent of lung damage on HRCT&#44; and refractoriness to treatment may occur&#44; being the only option ECMO as a bridge to lung transplantation&#46;<a class="elsevierStyleCrossRefs" href="#bib0485"><span class="elsevierStyleSup">45&#44;48&#44;49</span></a> It has been reported that they may have a progressive fibrosing evolution in the first two months after diagnosis&#44; with the appearance of reticulations and distortion of the architecture in HRCT&#44; which leads to an irreversible loss of lung volume&#44; requiring anti-fibrotic therapy adjuvant to immunosuppressive treatment from the first months of diagnosis&#46;<a class="elsevierStyleCrossRef" href="#bib0480"><span class="elsevierStyleSup">44</span></a> In addition to the triple immunosuppressive scheme&#44; other schemes have been described using&#44; for example&#44; Jak inhibitors&#46;<a class="elsevierStyleCrossRefs" href="#bib0510"><span class="elsevierStyleSup">50&#8211;52</span></a><a class="elsevierStyleCrossRef" href="#fig0020">Fig&#46; 4</a> describes some schemes used in this entity&#46;</p><elsevierMultimedia ident="fig0020"></elsevierMultimedia></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Conclusions</span><p id="par0095" class="elsevierStylePara elsevierViewall">Although no clinical trials have rigorously evaluated therapeutic regimens in RA-ILD&#44; ASSD-ILD&#44; and MDA5<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>ILD&#44; based on existing descriptive and cohort studies&#44; a therapeutic approach that combines reduction of the inflammatory burden of the underlying disease with disease modifying antirheumatic drugs&#44; including methotrexate especially in management of rheumatoid arthritis&#44; with antifibrotic agents in patients who have a progressive fibrosing lung disease phenotype has led to lessening of the burden of the associated lung disease&#46;</p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Funding</span><p id="par0100" class="elsevierStylePara elsevierViewall">None&#46;</p></span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Conflicts of interest</span><p id="par0105" class="elsevierStylePara elsevierViewall"><ul class="elsevierStyleList" id="lis0010"><li class="elsevierStyleListItem" id="lsti0015"><span class="elsevierStyleLabel">&#8226;</span><p id="par0110" class="elsevierStylePara elsevierViewall">Jorge Rojas Serrano declares having received fees from Boehringer Ingelheim&#44; Pfizer&#44; and Bristol-Myers Squib for conferences and consultancies&#59; he has received funds from Pfizer for research projects proposed by the researcher&#46;</p></li><li class="elsevierStyleListItem" id="lsti0020"><span class="elsevierStyleLabel">&#8226;</span><p id="par0115" class="elsevierStylePara elsevierViewall">Mayra Mej&#237;a reports having received honoraria from Boehringer Ingelheim for conferences and consultancies&#46;</p></li><li class="elsevierStyleListItem" id="lsti0025"><span class="elsevierStyleLabel">&#8226;</span><p id="par0120" class="elsevierStylePara elsevierViewall">Daphne Rivero-Gallegos has nothing to declare&#46;</p></li></ul></p></span></span>"
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          "titulo" => "Keywords"
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          "titulo" => "Palabras clave"
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          "titulo" => "Treatment of rheumatoid arthritis-associated interstitial lung disease &#40;RA-ILD&#41;"
        ]
        5 => array:2 [
          "identificador" => "sec0010"
          "titulo" => "The strict control of RA disease activity"
        ]
        6 => array:2 [
          "identificador" => "sec0015"
          "titulo" => "What drugs are used to treat RA activity&#63;"
        ]
        7 => array:2 [
          "identificador" => "sec0020"
          "titulo" => "There are other therapeutic options besides MTX"
        ]
        8 => array:2 [
          "identificador" => "sec0025"
          "titulo" => "Which drugs are not to use in the management of RA-ILD&#63;"
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          "identificador" => "sec0030"
          "titulo" => "Use of glucocorticoids in RA-ILD"
        ]
        10 => array:2 [
          "identificador" => "sec0035"
          "titulo" => "Treatment with anti-fibrotic drugs"
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        11 => array:3 [
          "identificador" => "sec0040"
          "titulo" => "Treatment of IIM-ILD"
          "secciones" => array:1 [
            0 => array:2 [
              "identificador" => "sec0045"
              "titulo" => "Treatment of interstitial lung disease related to anti-synthetase syndrome &#40;ASSD-ILD&#41;"
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          ]
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          "identificador" => "sec0050"
          "titulo" => "Anti-MDA5-positive dermatomyositis associated with interstitial lung disease &#40;MDA5-ILD&#41;"
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        13 => array:2 [
          "identificador" => "sec0055"
          "titulo" => "Conclusions"
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          "titulo" => "Funding"
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    "fechaRecibido" => "2023-04-13"
    "fechaAceptado" => "2023-07-19"
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          "clase" => "keyword"
          "titulo" => "Keywords"
          "identificador" => "xpalclavsec1827074"
          "palabras" => array:4 [
            0 => "Interstitial lung disease"
            1 => "Rheumatoid arthritis associated interstitial lung disease"
            2 => "Anti synthetase syndrome"
            3 => "Anti MDA 5"
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      ]
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          "clase" => "keyword"
          "titulo" => "Palabras clave"
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          "palabras" => array:4 [
            0 => "Enfermedad pulmonar intersticial"
            1 => "Enfermedad pulmonar intersticial asociada a la artritis reumatoide"
            2 => "S&#237;ndrome anti-sintetasa"
            3 => "Anti MDA 5"
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        "titulo" => "Abstract"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">This article will mention the essential aspects of managing ILD associated with systemic autoimmune diseases such as rheumatoid arthritis &#40;RA&#41; and inflammatory myopathies &#40;IIM&#41;&#46; The prognosis of rheumatoid arthritis-associated interstitial lung disease &#40;RA-ILD&#41; has recently improved because of tighter control of RA disease activity&#46; This article presents recent evidence of the effect of methotrexate on RA-ILD&#44; which is associated with a better prognosis&#46; The available alternatives include the use of anti-fibrotic drugs&#46; In managing interstitial lung disease related to anti-synthetase syndrome &#40;ASSD-ILD&#41; and anti-MDA5-associated ILD&#44; immunosuppression and anti-fibrotic drug regimens are relevant aspects mentioned&#46;</p></span>"
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      "es" => array:2 [
        "titulo" => "Resumen"
        "resumen" => "<span id="abst0010" class="elsevierStyleSection elsevierViewall"><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Este art&#237;culo se&#241;ala los aspectos esenciales del manejo de la enfermedad pulmonar intersticial &#40;EPI&#41; asociada con algunas enfermedades autoinmunes sist&#233;micas&#44; como la EPI asociada con la artritis reumatoide &#40;AR&#41; y las miopat&#237;as inflamatorias &#40;MI&#41;&#46; El pron&#243;stico de la enfermedad pulmonar intersticial asociada con la artritis reumatoide &#40;EPI-AR&#41; ha mejorado recientemente&#44; debido a un control m&#225;s estricto de la actividad de la AR&#46; El art&#237;culo presenta evidencia reciente del efecto del metotrexato en la EPI-AR&#44; que se asocia con un mejor pron&#243;stico&#46; Las alternativas disponibles incluyen el uso de f&#225;rmacos antifibrosantes&#46; En el manejo de la enfermedad pulmonar intersticial asociada con el s&#237;ndrome anti sintetasa &#40;EPI-SAS&#41;&#44; as&#237; como en la EPI asociada con el anticuerpo anti MDA5&#44; se menciona el uso de f&#225;rmacos inmunosupresores y antifibrosantes&#46;</p></span>"
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            "apendice" => "<p id="par0195" class="elsevierStylePara elsevierViewall">The following are the supplementary material to this article&#58;<elsevierMultimedia ident="upi0005"></elsevierMultimedia></p>"
            "etiqueta" => "Appendix A"
            "titulo" => "Supplementary material"
            "identificador" => "sec0085"
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          "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">The management of rheumatoid arthritis-associated interstitial lung disease &#40;RA-ILD&#41; has two main pillars&#58; control of RA activity and treatment with anti-fibrotic drugs&#46;</p>"
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          "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">&#40;A&#41; Baseline HRCT of a patient with RA-ILD&#44; showing perivascular and randomly distributed cysts&#44; with ground-glass opacities and areas of pulmonary consolidation with bronchocentric thickening of the interstitium&#46; &#40;B&#41; HRCT one year after starting treatment with prednisone and methotrexate&#46; A significant decrease in ground glass&#44; resolution of the consolidation areas and bronchocentric thickening of the pulmonary interstitium&#46;</p> <p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Image from Rojas-Serrano J&#44; Gonz&#225;lez-Vel&#225;squez E&#44; Mej&#237;a M&#44; S&#225;nchez-Rodr&#237;guez A&#44; Carrillo G&#46; Interstitial lung disease related to rheumatoid arthritis&#58; evolution after treatment&#46; Reumatologia Clinica&#46; 2012&#59;8&#58;68&#8211;71&#46;</p>"
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          "en" => "<p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Proposed treatment regimen for ASSD-ILD&#46;</p>"
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Original language: English
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