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5/2020
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Artykuł przeglądowy

Uveitis associated juvenile idiopathic arthritis – presentation of recently published international recommendations for diagnostic and therapeutic procedures

Lidia Rutkowska-Sak
1
,
Piotr Gietka
1

1.
Developmental Age Rheumatology Clinic and Polyclinic, National Institute of Geriatrics, Rheumatology, and Rehabilitation, Warsaw, Poland
Reumatologia 2020; 58, 5: 277–281
Data publikacji online: 2020/10/29
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Introduction

Autoimmune and autoinflammatory process development underlies the pathogenesis of juvenile idiopathic arthritis (JIA), the most common type of arthritis at developmental age. A chronic inflammatory process may result in extra-articular symptoms and systemic complications. The incidence of JIA in Europe varies from 1.6 to 23, and prevalence from 3.8 cases per 400/100,000 [1].

Diagnosis requires adherence to several criteria: time of onset of the disease, age < 16 years, at least six months’ duration of symptoms, and exclusion of other causes of arthritis. Exclusion list includes the following: infection-related, reactive, allergic and toxic arthritis, neoplastic, metabolic, autoimmune, and blood diseases, as well as other inflammatory and non-inflammatory connective tissue diseases. Also, psychogenic diseases and fibromyalgia are JIA exclusions [2]. Juvenile idiopathic arthritis has several clinical subtypes, which are presented in Table I.

Table I

The prevalence of various clinical subtypes of juvenile idiopathic arthritis (JIA)

JIA subtypesThe most common age at disease onset (years)Prevalence (%)
Oligoarticular (persistent or extended)Age 2–440–50
Polyarticular, RF (–)Age 2–4, 9–1125–30
GeneralisedUnspecified13–26
Polyarticular, RF (+)Older children2–7
Enthesitis-related ArthritisOlder children5–8
Psoriatic arthritisAge 2–4, 9–115–8
Undifferentiated11–21

The possibility of a varied course of the disease, especially in the first six months, scant information resulting from immunological tests, and the need to analyse all exclusions can hinder the diagnosis. Despite using numerous innovative therapies, the effect of treatment is not always satisfactory. Moreover, even 30 years after disease onset, in almost 40% of patients the disease remains constantly active [3, 4].

Uveitis (UV) is the most common extra-articular symptom of JIA. It was first observed by Hutchinson [5] and described in his article in 1873, and later by Ohm in 1910 [6]. In 1966 the clinicians from Institute of Rheumatology in Warsaw (Pietrowa, an ophthalmologist; Sowińska and Strzelecka, paediatricians) described their observations on patients with JIA-associated UV [7].

The incidence of UA refers to 4.3 out of 100,000 children, and its prevalence is 27.9 out of 100,000 children [8]. According to various authors, UA occurs in 15–67% of cases of JIA [8]. In the course of JIA, UV develops in 20–30% of patients, most often in 4–7 years from the occurrence of articular symptoms. However, this is not a rule because in about 3–10% of children with JIA UV precedes arthritis [8]. Severe and recurrent UV can cause complications such as glaucoma, cataract, optic nerve damage, retinal detachment, or even loss of vision. Most often, especially in patients with the presence of anti-nuclear antibodies (ANA), JIA has an oligoarticular subtype.

The main IA-UV peak incidence is at the age of 2–4 years. Problems with verbal communication obvious at this age and the course of the disease (painless ocular lesions, not visible at first) comprise 85% of the first uveitis symptoms, and its subsequent episodes are unnoticed. Due to this limitation, at the moment of initial UV diagnosis, significant vision loss is observed in 25–33% of children with JIA [8].

Clinically, JIA-associated uveitis is chronic non-granulomatous inflammation of the anterior section of the uvea (anterior uveitis – AUV). The inflammation of anterior part includes iridocyclitis and iritis (anterior chamber and iris). Uveitis may cause severe symptoms such as eye redness, pain, and visual disturbances with blurred vision and sensitivity to light. During slit lamp examination, a “sprinkle” pattern, small and medium precipitates on the endothelial surface, cells and exudation in anterior chamber, and dilated pupil vessels are visible. In the course of a long-term inflammatory process, inflammatory cells in vitreous humour, pigment deposits on a lens, posterior adhesions, and synechia occur. In 75% of cases inflammation affects both eyes.

Based on the analysis of the course of the disease, in over 100 children with JIA and uveitis, it was shown that the disease was more common in girls, but it was significantly more acute in boys, sometimes with elevated classical laboratory markers of acute inflammation. Also in boys, uveitis preceded other clinical symptoms of JIA more often. In the observed children, uveitis affected one eye mainly in the oligoarticular subtype of JIA, in the remaining subtypes it affected both eyes. In children with uveitis, often despite laboratory markers of acute inflammation such as C-reactive protein, erythrocyte sedimentation rate, and elevated number of thrombocytes, an elevated level of interleukin 1 was observed. The consequences of late diagnosis of uveitis were often irreversible and could lead to severe disability even in the form of eyeball atrophy [9, 10].

For years there were no generally accepted diagnostic and therapeutic standards for diagnostics and treatment of JIA associated uveitis.

The first recommendations for diagnostics and treatment of JIA UV were first put forward by the experts of German Scientific Society of Paediatric and Adult Ophthalmologists and Rheumatologists in 2004, subsequent updates were presented in 2007, and the last update is from 2011 [11].

A

In recent years, as a part of the Paediatric Rheumatology International Trials Organisation (PRINTO), the Single Hub and Access point for Paediatric Rheumatology in Europe (SHARE) project has been created. The main goal of this project is to improve the care of paediatric patients suffering from rheumatic disorders.

As a part of the SHARE project, recommendations for diagnostics and treatment of UV JIA were developed on the basis of the consensus arrived at by a team of paediatric ophthalmologists and rheumatologists [12]. These recommendations are presented in Table II.

Table II

Summarised points of consensus-based recommendations for the management of uveitis associated with juvenile idiopathic arthritis (JIA): the SHARE initiative [11]

I. Recommendations for diagnostics and screening programmes of JIA-associated uveitis
  1. All children with JIA should be tested for uveitis

  2. Frequency of follow-up visits should be scheduled on the basis of the course of the disease and agreed to by an ophthalmologist

  3. Children in whom immunosuppressive treatment was withdrawn are susceptible to a new episode or recurrence of uveitis. After immunosuppressive treatment is completed, all the children should undergo ophthalmic examination every 3 months for at least 1 year

II. Recommendations for assessment of activity of JIA-associated uveitis
  1. There is a need for close cooperation between an ophthalmologist and a paediatric rheumatologist in the area of modification of treatment, depending on the activity of the disease

  2. There is a need to develop generally acceptable criteria for assessment of uveitis activity helpful in the selection of systemic therapy

  3. Currently, there is no biomarker agreed upon that would monitor uveitis activity

  4. Currently, there is no widely accepted definition of inactive eye disease in the course of JIA. Cellularity in the anterior chamber should not be the goal of treatment of uveitis. The presence of macular oedema and/or papilledema, lowering of intraocular pressure, and rubeosis iridis may require anti-inflammatory treatment despite the lack of cells in the anterior chamber

  5. A 2-year therapy with classic or biologic modifying drugs right after a local therapy with glucocorticosteroids is recommended

III. Recommendations for treatment of JIA-associated uveitis
  1. Active uveitis requires immediate treatment

  2. Topical glucocorticosteroids (preferably prednisolone acetate or dexamethasone) are first-line drugs in uveitis therapy

  3. Topical or general nonsteroidal anti-inflammatory drugs are not proven to be efficient in monotherapy, but they may be used as supplementary drugs

  4. During the first visit a systemic immunosuppressive therapy for active chronic uveitis is recommended in case factors of bad prognosis are present. The presence of factors of bad prognosis, including the lack of remission in later phase of the disease, also requires systemic immunosuppression

  5. Systemic immunosuppression is recommended in case no improvement in topical treatment is obtained for 3 months or in case uveitis relapses during reduction of doses glucocorticosteroids

  6. Methotrexate has been the drug of choice in systemic immunosuppression

  7. In case methotrexate is not effective or not tolerated, it is recommended to include a biologic drug or switch to a biologic drug

  8. Use of anti-TNF drugs (adalimumab > infliximab > golimumab) is recommended in patients who are resistant to modifying drugs, especially to methotrexate

  9. On the basis of current evidence, etanercept should not be take into consideration as a therapy for JIA-associated uveitis

  10. Exchanging various anti-TNF drugs is not recommended in the event that the first used anti-TNF drug is ineffective, even if current evidence is based on the results of research on small groups of patients

  11. In case of further ineffectiveness of treatment, a test for the presence of antibodies against the used drugs or their low concentration should be considered. With the lack of antibodies and/or low concentration of the used drug, increasing the doses or shortening the time interval between individual doses should be taken into consideration

  12. In cases of resistance to the used TNF inhibitors, treatment with tocilizumab, rituximab, or abatacept should be considered as an option

B

In 2019, a year after the recommendations for diagnosing, monitoring, and treatment of JIA-associated uveitis of the SHARE project had been released, the guidelines from the American College of Rheumatology (ACR) and Arthritis Foundation 2019 were published [13].

The Guideline for the Screening, Monitoring, and Treatment of Juvenile Idiopathic Arthritis–Associated Uveitis of American College of Rheumatology/Arthritis Foundation [13] are presented below:

I. Recommendations for ophthalmic examinations in children with JIA:

  1. With a high risk of development of chronic uveitis:

    • ophthalmic examination every 3 months.

II. Recommendations for monitoring of ophthalmic examinations in children with JIA and controlled chronic uveitis:

  1. During exchange, reduction, and after completion of topical treatment with glucocorticosteroids:

    • ophthalmic examination every month.

  2. During stable treatment:

    • ophthalmic examination every 3 months.

  3. During reduction or withdrawal of systemic therapy:

    • ophthalmic examination every 2 months.

III. Recommendations for the use of glucocorticosteroids:

In children and adolescents with JIA and active chronic uveitis the following is recommended:

  1. Focal use of 1% prednisolone acetate (when compared to other topical drugs).

  2. Introduction or increase in doses of topical glucocorticosteroids for short-term control of new or relapsed inflammation in the eye instead of introducing systemic glucocorticosteroids. However, in patients who require 1–2 drops of 1% prednisolone acetate (or 1% equivalent) to control uveitis if they do not get systemic therapy, introduction of systemic therapy and maintaining focal glucocorticosteroids is recommended. If the patients still require 1–2 drops of 1% prednisolone acetate or (1% equivalent) with at least three-month long use of systemic treatment, a change or intensification of systemic treatment is recommended.

IV. Recommendations for classic and biologic DMARDs (disease-modifying antirheumatic drugs) in children and adolescents with JIA and chronic uveitis:

  1. At the start of treatment, subcutaneous administration of methotrexate is recommended because it is more effective when compared to oral form.

  2. In case of severe uveitis, posing a threat of complications, initiation of methotrexate therapy with TNF inhibitor in the form of a monoclonal antibody, and not a receptor, is recommended.

  3. In the event of insufficient response to one TNFi monoclonal antibody, increase in the dose or the frequency of administration, and if there is still no improvement, a change of the type of antibody is recommended.

  4. In patients who did not respond to methotrexate and subsequently to two monoclonal antibodies TNFi at abatacept or tocilizumab are recommended as biological options of DMARDs, and mycophenolate, leflunomide or ciclosporin, as alternative, non-biological options of DMARDs.

V. Recommendations for withdrawal of therapy in JIA with chronic uveitis:

  1. In children with the disease that is controlled with systemic therapy but that requires administration of one to two drops of 1% prednisolone acetate a day, reduction of topical, ocular glucocorticosteroids doses is strongly recommended before reduction of doses of the drugs administered systemically.

  2. In patients with uveitis that is well controlled only with classic and/or biologic DMARDs administered systemically, the therapy should be withdrawn after at least wot years of the disease being well controlled.

C

Also last year, eight paediatric rheumatologists and seven ophthalmologists, as the Multinational Interdisciplinary Working Group for Uveitis in Childhood (MIWGUC), published a proposal of definitions concerning: response to treatment, inactive disease, and damage for JIA-associated uveitis (juvenile idiopathic arthritis-associated uveitis – JIAU) based on the validation of outcomes of assessment [14]. According to the doctors associated in MIWGUC, the assessment should be carried out jointly by a paediatric ophthalmologist, rheumatologist, and the patient or patient’s parent.

The main proposals of MIWGUC [14]:

I. Assessment by an ophthalmologist:

  1. Anatomical location of the inflammatory process.

  2. Activity of inflammatory lesions according to SUN (Standardisation of Uveitis Nomenclature), grades 0–4, depending on the number of inflammatory cells within a field sized 1 × 1 mm of biomicroscope [0 (< 1), 0.5+ (1–5), 1+ (6–15), 2+ (16–25), 3+ (26–50), 4+ (> 50)] or according to MIWGUC (only four grades) and a VAS scale (0–100 mm).

  3. Visual acuity documented with a chart with logMAR.

  4. Eye fundus examination.

  5. Laser photometry, if available.

  6. Presence of structural complications:

    • ocular hypotony (IOP ≤ 6 mm Hg),

    • ocular hypertension (≥ 21 mm Hg),

    • posterior adhesions,

    • glaucoma,

    • cataract,

    • band keratopathy,

    • papilloedema,

    • macular oedema,

    • epiretinal membrane,

    • floaters.

  7. Significant weakness of sight (< 0.3).

II. Assessment by a paediatrician–rheumatologist:

  1. Age at onset of the disease and its duration.

  2. Number of inflammatory active joints.

  3. Type of treatment.

  4. General activity of the disease on a VAS scale (0–100 mm).

III. Assessment by a patient/parent:

  1. Number of days spent at a hospital and school/ kindergarten absences.

  2. Limitations in everyday activities in the last six months on a CHAQ scale (0–3).

  3. Quality of life on PedsQL scale (0–100).

  4. General well-being on a VAS scale (0–100 mm).

  5. 5 .Response to treatment.

Remission in juvenile idiopathic arthritis uveitis

With reference to Wallace’s criteria for JIA, a remission in JIAU during and without pharmacotherapy is defined by meeting the following conditions after at least six months of treatment or during inactive eye inflammatory disease for more than three months after all anti-inflammatory therapies used to treat uveitis were completed:

  1. Total number of AC cells in a slit lamp – 0 of inflammatory cells, in patients with apnoea individual cells may be present.

  2. No papilloedema.

  3. No macular oedema.

  4. No floaters (< 0.5 +).

  5. No other complications.

  6. General assessment by an ophthalmologist of the grade of activity of uveitis on a VAS scale on the range from 0 to 100 mm must be 0.

  7. General assessment by a rheumatologist of the grade of disability due to uveitis on a VAS scale on the range from 0 to 100 mm must be 0.

  8. General assessment by a patient/parent of the grade of disability due to uveitis on a VAS scale on the range from 0 to 100 mm must be 0.

  9. Always both eyes must be assessed.

What is consistent in the presented recommendations is the need for ophthalmological control also in asymptomatic (in terms of UV) patients with JIA, more frequent eye examination in case of diagnosed UV, and consent of specialists is visible in subject of necessity of both eye assessment.

Conclusions

Following the recommendations and proposals of paediatricians and rheumatologists, the common approach to patients with JIA and uveitis should be special, because complications of JIA can result in severe and permanent disability, and points to a worse course of this autoimmune disease.

The message for rheumatologists results, among others, from the SHARE initiative and ACR/Arthritis Foundation guidelines, and is that severe JIA-associated uveitis requires combined therapy with a biological drug. This procedure allows the control of UV activity and avoidance of complications. Therefore, it should be stressed that children with severe uveitis, who are non-responsive for treatment with DMARDs for 12 weeks, irrespective of the number of affected joints, may be qualified to the treatment with biologics.

In addition, the recommendations prepared in recent years, collected in the presented article, facilitate argumentation to apply early enough more aggressive and effective treatment of this group of patients.

Notes

[1] Conflicts of interest The authors declare no conflict of interest.

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Copyright: © 2020 Narodowy Instytut Geriatrii, Reumatologii i Rehabilitacji w Warszawie. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.
 
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