Identification and characteristics of patients with potential difficult-to-treat psoriatic arthritis: exploratory analyses of the Greek PsA registry.

OBJECTIVE: To present the characteristics of patients with potential difficult-to-treat (D2T) PsA. METHODS: We used data from the Greek multicentre registry of PsA patients. D2T PsA was defined as follows: patients with at least 6 months' disease duration, who have failed to at least one conventional synthetic DMARD and at least two biologic DMARDs/targeted synthetic DMARDs with a different mechanism of action and have either at least moderate disease activity (MODA) defined as DAPSA (Disease Activity index in PSoriatic Arthritis) >14, and/or are not at minimal disease activity (MDA). Demographic and clinical characteristics were compared between D2T and non-D2T PsA patients. In two sensitivity analyses, patients classified as D2T solely according to the MODA or MDA criterion were examined separately. RESULTS: Among 467 patients included, 77 (16.5%) were considered D2T and 390 non-D2T PsA. Compared with non-D2T, patients with D2T PsA presented more commonly with extensive psoriasis (P < 0.0001) and were more likely to have higher BMI (P = 0.023) and a history of IBD (P = 0.026). In the MODA and MDA sensitivity analyses, 7.5% and 12.5% of patients were considered D2T, respectively. In both sensitivity analyses, extensive psoriasis was again identified as an independent variable for D2T PsA (P = 0.001 and P = 0.008, respectively). Moreover, female gender (P = 0.034) in the MODA analysis and axial disease (P = 0.040) in the MDA analysis were independent variables for D2T PsA. CONCLUSION: Despite the availability of therapies, D2T PsA is common in real-life cohorts of patients with PsA and extensive psoriasis. High BMI, female gender, axial disease and history of IBD were also associated with D2T PsA.

Clinical features and diagnostic tools in idiopathic inflammatory myopathies.

Idiopathic inflammatory myopathies (IIMs) are rare autoimmune disorders affecting primarily muscles, but other organs can be involved. This review describes the clinical features, diagnosis and treatment for IIMs, namely polymyositis (PM), dermatomyositis (DM), sporadic inclusion body myositis (sIBM), immune-mediated necrotizing myopathy (IMNM), and myositis associated with antisynthetase syndrome (ASS). The diagnostic approach has been updated recently based on the discovery of circulating autoantibodies, which has enhanced the management of patients. Currently, validated classification criteria for IIMs allow clinical studies with well-defined sets of patients but diagnostic criteria to guide the care of individual patients in routine clinical practice are still missing. This review analyzes the clinical manifestations and laboratory findings of IIMs, discusses the efficiency of modern and standard methods employed in their workup, and delineates optimal practice for clinical care. Α multidisciplinary diagnostic approach that combines clinical, neurologic and rheumatologic examination, evaluation of electrophysiologic and morphologic muscle characteristics, and assessment of autoantibody immunoassays has been determined to be the preferred approach for effective management of patients with suspected IIMs.

Comparable or higher prevalence of comorbidities in antiphospholipid syndrome vs rheumatoid arthritis: a multicenter, case-control study.

OBJECTIVES: Evidence on comorbidity prevalence in antiphospholipid syndrome (APS) and its difference from high comorbidity burden rheumatic diseases is limited. Herein, we compare multiple comorbidities between APS and RA. METHODS: A total of 326 patients from the Greek APS registry [237 women, mean age 48.7 (13.4) years, 161 primary APS (PAPS), 165 SLE-APS] were age/sex matched (1:2 ratio) with 652 patients from a Greek multicentre RA cohort of 3115 patients. Prevalence of cardiovascular (CV) risk factors, stroke, coronary artery disease (CAD), osteoporosis, diabetes mellitus (DM), chronic obstructive pulmonary disease (COPD), depression and neoplasms were compared between APS and RA patients using multivariate regression analysis. RESULTS: Ηyperlipidemia and obesity (ΒΜΙ ≥ 30 kg/m2) were comparable while hypertension, smoking, stroke and CAD were more prevalent in APS compared with RA patients. Osteoporosis and depression were more frequent in APS, while DM, COPD and neoplasms did not differ between the two groups. Comparison of APS subgroups to 1:2 matched RA patients revealed that smoking and stroke were more prevalent in both PAPS and SLE-APS vs RA. Hypertension, CAD and osteoporosis were more frequent only in SLE-APS vs RA, whereas DM was less prevalent in PAPS vs RA. Hyperlipidaemia was independently associated with CV events (combined stroke and CAD) in PAPS and SLE-APS, while CS duration was associated with osteoporosis in SLE-APS. CONCLUSION: Comorbidity burden in APS (PAPS and SLE-APS) is comparable or higher than that in RA, entailing a high level of diligence for CV risk prevention, awareness for depression and CS exposure minimization.

Incidence, risk factors and validation of the RABBIT score for serious infections in a cohort of 1557 patients with rheumatoid arthritis.

OBJECTIVES: Predicting serious infections (SI) in patients with rheumatoid arthritis (RA) is crucial for the implementation of appropriate preventive measures. Here we aimed to identify risk factors for SI and to validate the RA Observation of Biologic Therapy (RABBIT) risk score in real-life settings. METHODS: A multi-centre, prospective, RA cohort study in Greece. Demographics, disease characteristics, treatments and comorbidities were documented at first evaluation and one year later. The incidence of SI was recorded and compared with the expected SI rate using the RABBIT risk score. RESULTS: A total of 1557 RA patients were included. During follow-up, 38 SI were recorded [incidence rate ratio (IRR): 2.3/100 patient-years]. Patients who developed SI had longer disease duration, higher HAQ at first evaluation and were more likely to have a history of previous SI, chronic lung disease, cardiovascular disease and chronic kidney disease. By multivariate analysis, longer disease duration (IRR: 1.05; 95% CI: 1.005, 1.1), history of previous SI (IRR: 4.15; 95% CI: 1.7, 10.1), diabetes (IRR: 2.55; 95% CI: 1.06, 6.14), chronic lung disease (IRR: 3.14; 95% CI: 1.35, 7.27) and daily prednisolone dose ≥10 mg (IRR: 4.77; 95% CI: 1.47, 15.5) were independent risk factors for SI. Using the RABBIT risk score in 1359 patients, the expected SI incidence rate was 1.71/100 patient-years, not different from the observed (1.91/100 patient-years; P = 0.97). CONCLUSION: In this large real-life, prospective study of RA patients, the incidence of SI was 2.3/100 patient-years. Longer disease duration, history of previous SI, comorbidities and high glucocorticoid dose were independently associated with SI. The RABBIT score accurately predicted SI in our cohort.

Use of conventional synthetic and biologic disease-modifying anti-rheumatic drugs in patients with rheumatic diseases contracting COVID-19: a single-center experience.

To examine whether patients with inflammatory arthritis (IA) treated with conventional synthetic (cs) disease-modifying anti-rheumatic drugs (DMARDs) and/or biologic (b) DMARDs, could be affected from SARS-CoV-2 infection and to explore the COVID-19 disease course and outcome in this population. This is a prospective observational study. During the period February-December 2020, 443 patients with IA who were followed-up in the outpatient arthritis clinic were investigated. All patients were receiving cs and/or bDMARDs. During follow-up, the clinical, laboratory findings, comorbidities and drug side effects were all recorded and the treatment was adjusted or changed according to clinical manifestations and patient's needs. There were 251 patients with rheumatoid arthritis (RA), 101 with psoriatic arthritis (PsA) and 91 with ankylosing spondylitis (AS). We identified 32 patients who contracted COVID-19 (17 RA, 8 PsA, 7 AS). All were in remission and all drugs were discontinued. They presented mild COVID-19 symptoms, expressed mainly with systemic manifestations and sore throat, while six presented olfactory dysfunction and gastrointestinal disturbances, and all of them had a favorable disease course. However, three patients were admitted to the hospital, two of them with respiratory symptoms and pneumonia and were treated appropriately with excellent clinical response and outcome. Patients with IA treated with cs and/or bDMARDs have almost the same disease course with the general population when contract COVID-19.

Therapeutic Options and Cost-Effectiveness for Rheumatoid Arthritis Treatment.

PURPOSE OF REVIEW: During the last two decades, the therapeutic decisions and strategies for rheumatoid arthritis (RA) management have improved dramatically. Today, the therapeutic armamentarium is significantly augmented, and by using both old and new drugs, remission or low disease activity is a reasonable goal. The use of conventional synthetic (cs) disease-modifying anti-rheumatic drugs (DMARDs) in combination with biologic (b) or targeted synthetic (ts) DMARDs has revolutionized RA treatment. Methotrexate administration is considered fundamental among other csDMARDs for the treatment of RA. It is recommended as the initial drug (monotherapy), or in combination with other csDMARDs, bDMARDs, and tsDMARDs in a step-up strategy. Furthermore, it can be used with other csDMARDs as initial combination-therapy. On the other hand, despite the fact that bDMARDs and ts DMARDs are highly efficacious and can also be used as monotherapy in certain cases, cost-effectiveness is still questionable when compared with csDMARDs. In this direction, the classic argument of utmost importance has to do with the most appropriate treatment strategy that shall be initially applied: csDMARD combination-therapy versus monotherapy, or step-up combinationtherapy with bDMARDs, especially tumor necrosis factor-α (TNFa) blockers. For this reason, a literature review of the most important csDMARDs combination and bDMARDs combination studies has been deployed. RECENT FINDINGS: The results showed that the triple csDMARDs therapy approach is more effective and less expensive. In addition, workers' productivity is higher than any other treatment options for RA. Triple-therapy constitutes a smart, efficacious, and significantly cheaper choice for RA therapeutic management.

Unmet needs in the treatment of ankylosing spondylitis: a long-term observational study from a single university center.

Despite the progress in the treatment of ankylosing spondylitis (AS), a significant number of patients do not achieve low disease activity (LDA). The aim of the study is to estimate the size of unmet needs in the treatment of AS in a long-term observational study. Between January 2003 and December 2017, 220 patients with radiographic SpA were evaluated fulfilling the ASAS criteria. They were followed up at predefined times and were naive to biological treatment with anti-tumor necrosis factor agents (anti-TNFs) and the interleukin (IL)-17 inhibitor. NSAIDs, all anti-TNFs and the IL-17 inhibitor secukinumab were used according to the European, United States and Canadian guidelines for AS. During follow-up, several clinical parameters including disease activity scores were recorded. All 220 patients had an active disease and received at least two NSAIDs for 3 months. The anti-TNF of first choice was infliximab-51%, followed by adalimumab-27% and etanercept-22%. During follow-up, 22 patients were excluded from the study (18 lost, 4 never received anti-TNF due to comorbidities). From the rest (198), 12 did not receive anti-TNFs (8 due to sustained LDA on NSAIDs solely and 4 due to treatment denial). Finally, 186 (94%) were treated with anti-TNFs demonstrating sustained long-term LDA. However, 16 patients never achieved LDA despite they received two or three anti-TNFs or the IL-17 inhibitor. Thus, a total of 20 (10.1%) patients never achieved LDA. This is the first study aiming to estimate the gap and the size of unmet needs in AS patients using the international guidelines and recommendations for AS treatment, which is 10.1%.

High 3-year golimumab survival in patients with rheumatoid arthritis, ankylosing spondylitis and psoriatic arthritis: real world data from 328 patients.

OBJECTIVES: Our primary objective was to study the long-term survival on drug (SOD) of patients with rheumatoid arthritis (RA), psoriatic arthritis (PsA) and ankylosing spondylitis (AS) treated with golimumab (GLM) in real life settings. METHODS: This was a retrospective, observational study of all patients treated with GLM in 4 Academic Centres in Greece during a 4-year period (09/2010-06/2014). SOD was analysed using Kaplan-Meier survival analysis, while Cox regression analysis estimating hazard ratios (HRs) for different baseline variables associated with drug discontinuation was performed for each disease. RESULTS: 328 patients (RA: 166, PsA: 82, AS: 80) were included. The estimated SOD at 2 and 3 years was 68% and 62% overall and was better for AS (79% and 76%) compared to RA (69% and 60%, p=0.067) and PsA (58% and 53%, p=0.001) patients; no difference was noted between RA and PsA patients (p=0.204). There was no difference in SOD between biologic-naïve and experienced nor between non-biologic co-treated or GLM monotherapy treated patients. Seropositivity (rheumatoid factor and/or anti-cyclic citrullinated peptide antibodies) was associated with a lower risk for GLM discontinuation by multivariate analysis (HR=0.5, 95% CI=0.0.25-1.1, p=0.05) in RA patients. During 606 patient-years of follow-up, 11 (3.3%) patients discontinued GLM due to adverse events (AE), accounting for 11% of treatment discontinuations. The rates of serious AEs and serious infections were 2.3 and 1.0/100-patient-years, respectively. CONCLUSIONS: In this real-life study, GLM showed a high 3-year SOD in patients with inflammatory arthritides with a low rate of discontinuation due to AEs.

State of the Art Review on the Treatment of Psoriatic Disease.

Introduction: Psoriasis is an inflammatory skin disease that in some cases is accompanied by systemic manifestations. Given the varied clinical manifestations, the term psoriatic disease probably better reflects the clinical picture of these patients. Literature review: In most cases, the skin lesions precede joint involvement as well as other potentially involved organs such as the intestine and the eye. Various immune-mediated cellular pathways such as that of TNFα, IL-23, IL-17 as well as other cytokines are involved in the pathophysiology of the psoriatic disease. Future insights: A better understanding of the way they interfere with our immune system has led to remarkably better disease control and outcomes. This review aims to highlight the newest treatments for psoriatic disease, which are expected to significantly reduce unmet needs and treatment gaps.

Disease Profile and Achievement of Therapeutic Goals in a Modern, Nationwide Cohort of 923 Patients with Psoriatic Arthritis.

Background: Psoriatic arthritis (PsA) is a heterogenous chronic inflammatory disease affecting skin, joints, entheses, and spine with various extra-musculoskeletal manifestations and comorbidities. The reported patient, disease and treatment characteristics in the modern therapeutic era are limited. Methods: In this cross-sectional, multi-centre, nationwide study, we recorded the demographic, clinical, and therapeutic characteristics as well as the comorbidities of patients with PsA seen for 1 year (1/1/2022-31/12/2022). Results: 923 patients (55% females) with a median (IQR) age of 57 (48-65) years and a mean disease duration of 9.5 years were enrolled. Family history of psoriasis and PsA was noted in 28.3% and 6.3%, respectively. Most patients had limited psoriasis (BSA<3: 83%) while enthesitis, dactylitis, nail and axial involvement reported in 48.3%, 33.2%, 43% and 25.9% of patients, respectively. Regarding comorbidities, approximately half of patients had dyslipidaemia (42%) or hypertension (45.4%), 36.8% were obese and 17% had diabetes while 22.7% had a depressive disorder. Overall, 60.1% received biologics and among them more patients treated with anti-IL-17 or -12/23 agents were on monotherapy (64.2%) compared to those on TNFi monotherapy (49.4%, p=0.0001). The median PsA activity as assessed by the DAPSA score was 6 (IQR: 2.3 - 13.1) with 46% of patients reaching minimal disease activity status (MDA). Conclusion: In this large, real life, modern cohort of patients with PsA with frequent comorbidities who were treated mainly with biologics, almost half achieved minimal disease activity. These results show the value of existing therapeutic approaches while at the same time highlight the existing unmet needs.

Patterns and factors associated with pneumococcal vaccination in a prospective cohort of 1,697 patients with rheumatoid arthritis.

Introduction: Patients with rheumatoid arthritis (RA) are at increased risk for serious infections. Pneumococcal vaccination is among the most important preventive measures, however, vaccine uptake is suboptimal. We explored the rate and factors associated with pneumococcal vaccination in a contemporary RA cohort. Materials and methods: Multi-center, prospective, RA cohort study in Greece. Patient and disease characteristics and influenza and pneumococcal vaccinations were documented at baseline and 3 years later. Results: One thousand six hundred and ninety-seven patients were included and 34.5% had already received at least one pneumococcal vaccine at baseline. Among 1,111 non-vaccinated patients, 40.1% received pneumococcal vaccination during follow-up, increasing the vaccine coverage to 60.8%. By multivariate analysis, positive predictors for pneumococcal vaccination included prescription of influenza vaccine (OR = 33.35, 95% CI: 18.58-59.85), history of cancer (OR = 2.35, 95% CI: 1.09-5.06), bDMARD use (OR = 1.85, 95% CI: 1.29-2.65), seropositivity (OR = 1.47, 95% CI: 1.05-2.05), and high disease activity (DAS28-ESR, OR = 1.33, 95% CI: 1.17-1.51). Male sex (OR = 0.65, 95% CI: 0.43-0.99) was a negative predictor for pneumococcal vaccination during follow-up. Discussion: Despite increasing rates of pneumococcal vaccine coverage, 40% of RA patients remain unvaccinated. Severe disease, bDMARD use, comorbidities, and more importantly flu vaccination were the most significant factors associated with pneumococcal vaccination, emphasizing the currently unmet need for cultivating a "vaccination culture" in RA patients.

Biologic Therapies and Autoimmune Phenomena.

The use of biologic medications has represented a great advancement in the treatment of autoimmune rheumatic diseases. Despite their excellent efficacy, during the last years, a growing number of reports of autoimmune phenomena and paradoxical inflammation has emerged. These phenomena may range from the discovery of an isolated autoantibody to full-blown autoimmune diseases, organ-specific and systemic. This review has been carried out in order to underline the multitude of the potential adverse manifestations from the use of biologic medications. Thus, early recognition of specific types of autoimmune phenomena is an imperative for the physicians allowing them to have an accurate diagnosis and treatment.

Correlation of patient preferences to treatment outcomes in patients with rheumatoid arthritis treated with tumour necrosis factor inhibitors in Greece.

OBJECTIVES: To investigate possible associations between rheumatoid arthritis (RA) patient-expressed preferences over anti-tumour necrosis factor (anti-TNF) treatment and clinical and patient-reported outcomes. METHODS: PANORAMA was a non-interventional, prospective, multicentre, cohort study of 12 months duration, in patients with moderate-to-severe RA who initiated or switched to anti-TNF treatment. After initiation of anti-TNF, patients completed a preferences questionnaire on attributes related to anti-TNF treatment. Satisfaction with treatment was assessed with the Treatment Satisfaction Questionnaire for Medication (TSQM); compliance and persistence to treatment were recorded via a patient diary. Univariate and multivariate analyses were applied to assess correlations between patients' preferences over treatment with clinical and patient-reported outcomes. RESULTS: A total of 254 patients were enrolled; 66.1% (168/254) had highly active disease (DAS28-ESR > 5.1), while 65.4% (166/254) were biological-naïve. The 12-month drug-survival rate was 72.3%, while the respective rates of good EULAR response and remission (DAS28-ESR < 2.6) were 56.5% and 40.8%, respectively. By univariate analysis, fulfilment of patient preferences over treatment was associated with increased probability of remaining on therapy (p = 0.019), good EULAR response (p < 0.001) and satisfaction with treatment (p < 0.001). By multivariate analysis, fulfilment of patient preferences was the most important predictor for good EULAR response (OR 5.56, p < 0.001; finding confirmed and after propensity scoring matching), while seropositivity (HR 1.18, p = 0.047) and a high ESR (> 35 mm/h, HR 1.16, p = 0.071) predicted drug survival. CONCLUSIONS: In anti-TNF-treated RA patients, fulfilment of treatment preferences was independently associated with a good EULAR response and correlated with drug persistence at 12 months, emphasising the importance of patient preferences in treatment outcomes. Key Points • In anti-TNF treated RA patients, fulfilment of patients' treatment preferences is associated with a good clinical response at 12 months. • A shared decision-making process can maximise treatment's outcome in anti-TNF treated patients.

Treatment patterns and achievement of the treat-to-target goals in a real-life rheumatoid arthritis patient cohort: data from 1317 patients.

BACKGROUND: Data regarding the real-life predictors of low disease activity (LDA) in rheumatoid arthritis (RA) patients are limited. Our aim was to evaluate the rate and predictors of LDA and treatment patterns in RA. METHODS: This was a multicenter, prospective, RA cohort study where patients were evaluated in two different time points approximately 12 months apart. Statistical analysis was performed in order to identify predictors of LDA while patterns of disease-modifying anti-rheumatic drug [DMARDs; conventional synthetic (csDMARD) or biologic (bDMARD)] and glucocorticoid (GC) use were also recorded. RESULTS: The total number of patients included was 1317 (79% females, mean age: 62.9 years, mean disease duration: 10.3 years). After 1 year, 57% had achieved LDA (DAS28ESR<3.2) while 43% did not (34%: moderate disease activity: DAS28ESR ⩾3.2 to <5.1, 9%: high disease activity, DAS28ESR ⩾5.1). By multivariate analysis, male sex was positively associated with LDA [odds ratio (OR) = 2.29 p < 0.001] whereas advanced age (OR = 0.98, p = 0.005), high Health Assessment Questionnaire (HAQ) score (OR = 0.57, p < 0.001), use of GCs (OR = 0.75, p = 0.037) or ⩾2 bDMARDs (OR = 0.61, p = 0.002), high co-morbidity index (OR = 0.86, p = 0.011) and obesity (OR = 0.62, p = 0.002) were negative predictors of LDA. During follow-up, among active patients (DAS28ESR >3.2), 21% initiated (among csDMARDs users) and 22% switched (among bDMARDs users) their bDMARDs. CONCLUSION: In a real-life RA cohort, during 1 year of follow-up, 43% of patients do not reach treatment targets while only ~20% of those with active RA started or switched their bDMARDs. Male sex, younger age, lower HAQ, body mass index and co-morbidity index were independent factors associated with LDA while use of GCs or ⩾2 bDMARDs were negative predictors.

Unmet needs in the treatment of rheumatoid arthritis. An observational study and a real-life experience from a single university center.

OBJECTIVES: To estimate the size of unmet needs in the treatment of early Rheumatoid Arthritis (eRA), using all the conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) and/or biological DMARDs (bDMARDs) in a long-term observational study. MATERIALS AND METHODS: 538 patients with eRA were evaluated. The 2010 ACR/EULAR classification criteria were used. All patients were csDMARDs and bDMARDs-naive with disease duration less than one year. They were treated according to EULAR and ACR recommendations for RA. All the csDMARDs and bDMARDs were used. Clinical, laboratory findings with the disease activity score-28 and treatment decisions were all recorded as well as adverse drug reactions, reason of therapy termination, disease complications and comorbidities. RESULTS: Methotrexate (58%) and Infliximab (37%) where the first csDMARD and bDMARD choice respectively. During follow-up, 14 patients were lost and 7 developed comorbidities. The final results are referred to 517 patients. Among those, 66% were treated with csDMARDs as monotherapy or in combination therapy with sustained low disease activity (LDA). However, 3.2% from this group neither achieved LDA, nor received bDMARDs, due to comorbidities. On the other hand, 34% were treated with bDMARDs with or without csDMARDs. The majority of them demonstrated sustained LDA. From this group, 17.7% never achieved LDA, despite that they switched and received all bDMARDs. Thus, 20.9% of our patients never achieved LDA. CONCLUSIONS: Using the current recommendations for RA therapy we successfully treated the majority of our patients. However, we found that the size of gap and the unmet needs for treatment is about 20%.

Maintained Clinical Remission in Ankylosing Spondylitis Patients Switched from Reference Infliximab to Its Biosimilar: An 18-Month Comparative Open-Label Study.

BACKGROUND: Switching from reference infliximab (RI) to biosimilar infliximab (BI) had no detrimental effects on efficacy and safety. However, long-term follow-up data is missing. OBJECTIVE: To evaluate patients with Ankylosing Spondylitis (AS) in clinical remission who were switching from RI to BI, in terms of the safety and efficacy of this, in a long-term fashion. METHODS: One hundred and nine consecutive unselected AS patients were investigated. All were naïve to other biologics and were followed-up at predefined times receiving RI. Patients in clinical remission were asked to switch from RI to BI. Those who switched to BI were compared with a matched control-group receiving continuous RI. During follow-up, several parameters were recorded for at least 18 months. Disease activity was measured using the Bath Ankylosing Spondylitis disease activity index (BASDAI), and the Ankylosing Spondylitis disease activity score (ASDAS), using the C-reactive protein. Remission was defined as BASDAI < 4 and ASDAS < 1.3. RESULTS: Eighty-eight patients were evaluated (21 excluded for different reasons). From those, 45 switched to BI, while 43 continued receiving RI. No differences between groups regarding demographic, clinical and laboratory parameters were observed. All patients were in clinical remission. During follow-up, five patients from the BI-group and three from the maintenance-group discontinued the study (4 patients nocebo effect, 1 loss of efficacy). After 18 months of treatment, all patients in both groups remained in clinical remission. No significant adverse events were noted between groups. CONCLUSION: BI is equivalent to RI in maintaining AS in clinical remission for at least 18 months.

The impact of temporal artery biopsy for the diagnosis of giant cell arteritis in clinical practice in a tertiary university hospital.

BACKGROUND: Temporal artery biopsy (TAB) is useful in assisting with giant cell arteritis (GCA) diagnosis but lacks sensitivity. The aim of our study was to assess the diagnostic impact of TAB histology in patients with suspected GCA on hospital admission. METHODS: A prospectively maintained database was queried for all TABs performed between 1-1-2000 until 31-12-2017 at the University Hospital of Ioannina. Thus, inclusion criteria were made on the grounds of every patient that underwent a TAB during the above-mentioned period, regardless of demographic, clinical and laboratory data. RESULTS: Two hundred forty-five TABs were included (149 females and 96 males), with a mean age of 64.5 (±3.5) years. The mean symptoms duration until admission to the hospital was 8.6 (±1.3) weeks and all had elevated acute phase reactants on admission. The reasons of admission were fever of unknown origin (FUO) in 114 (46.5%) patients, symptoms of polymyalgia rheumatica (PMR) in 84 (34.3%), new headache in 33 (13.5%), anemia of chronic disease (ACD) in 8 (3.32%) and eye disturbances in 6 (2.5%) patients. Positive results were found in 49 (20%) TABs. More specifically, in 14% of patients with FUO, 21% in those with PMR, while in patients with a new headache the percentage was 27%. Finally, 5 out of 6 (83.3%) of patients with ocular symptoms and only one (12.5%) of those suffering from ACD. Visual manifestations and FUO are correlated with a positive TAB. CONCLUSION: It seems that TAB is useful in assisting with GCA diagnosis, but lacks sensitivity.