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Reuma.pt/vasculitis : the Portuguese vasculitis registry

Ponte, Cristina,Khmelinskii, Nikita,Teixeira, Vítor,Luz, Karine,Peixoto, Daniela,Rodrigues, Marília,Luís, Mariana,Teixeira, Lídia,Sousa, Sandra,Madeira, Nathalie,Aleixo, Joana A.,Pedrosa, Teresa,Serra, Sofia,Campanilho-Marques, Raquel,Castelão, Walter,Co

Abstract

Background: The vasculitides are a group of rare diseases with different manifestations and outcomes. New therapeutic options have led to the need for long-term registries. The Rheumatic Diseases Portuguese Register, Reuma.pt, is a web-based electronic clinical record, created in 2008, which currently includes specific modules for 12 diseases and > 20,000 patients registered from 79 rheumatology centres. On October 2014, a dedicated module for vasculitis was created as part of the European Vasculitis Society collaborative network, enabling prospective collection and central storage of encrypted data from patients with this condition. All Portuguese rheumatology centres were invited to participate. Data regarding demographics, diagnosis, classification criteria, assessment tools, and treatment were collected. We aim to describe the structure of Reuma.pt/vasculitis and characterize the patients registered since its development. Results: A total of 687 patients, with 1945 visits, from 13 centres were registered; mean age was 53.4 ± 19.3 years at last visit and 68.7% were females. The most common diagnoses were Behçet’s disease (BD) (42.5%) and giant cell arteritis (GCA) (17.8%). Patients with BD met the International Study Group criteria and the International Criteria for BD in 85.3 and 97.2% of cases, respectively. Within the most common small- and medium-vessel vasculitides registered, median [interquartile range] Birmingham Vasculitis Activity Score (BVAS) at first visit was highest in patients with ANCA-associated vasculitis (AAV) (17.0 [12.0]); there were no differences in the proportion of patients with AAV or polyarteritis nodosa who relapsed (BVAS≥1) or had a major relapse (≥1 major BVAS item) during prospective assessment (p = 1.00, p = 0.479). Biologic treatment was prescribed in 0.8% of patients with GCA, 26.7% of patients with AAV, and 7.6% of patients with BD. There were 34 (4.9%) deaths reported. Conclusions: Reuma.pt/vasculitis is a bespoke web-based registry adapted for routine care of patients with this form of rare and complex diseases, allowing an efficient data-repository at a national level with the potential to link with other international databases. It facilitates research, trials recruitment, service planning and benchmarking.

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RESEARCH Open Access Reuma.p / asculi is – he Po uguese asculi is egis y C is ina Pon e 1,2* , Niki a Khmelinskii 1,2 , Ví o Teixei a 1,2 , Ka ine Luz 1,3 , Daniela Peixo o 4 , Ma ília Rod igues 5,6 , Ma iana Luís 5 , Lídia Teixei a 7,8 , Sand a Sousa 7 , Na halie Madei a 9 , Joana A. Aleixo 10,11 , Te esa Ped osa 12,13 , So ia Se a 12 , Raquel Campanilho-Ma ques 1,2,9 , Wal e Cas elão 12 , Ana Co dei o 7 , Inês Co dei o 1,7 , Síl ia Fe nandes 1,14 , Ca la Maciei a 1 , Ped o Madu ei a 10 , A mando Malca a 5 , Romana Viei a 10,11 , Fe nando Ma ins 15 , G aça Sequei a 16 , Jaime C. B anco 12 , Lúcia Cos a 10 , José Vaz Pa o 9 , José Canas da Sil a 7 , José A. Pe ei a da Sil a 5 , Ca mo A onso 4 , Helena Canhão 15,17 , Ma ia J. San os 2,7,15 , Raashid A. Luqmani 18 and João E. Fonseca 1,2 Abs ac Backg ound: The asculi ides a e a g oup o a e diseases wi h di e en mani es a ions and ou comes. New he apeu ic op ions ha e led o he need o long- e m egis ies. The Rheuma ic Diseases Po uguese Regis e , Reuma.p , is a web-based elec onic clinical eco d, c ea ed in 2008, which cu en ly includes speci ic modules o 12 diseases and > 20,000 pa ien s egis e ed om 79 heuma ology cen es. On Oc obe 2014, a dedica ed module o asculi is was c ea ed as pa o he Eu opean Vasculi is Socie y collabo a i e ne wo k, enabling p ospec i e collec ion and cen al s o age o enc yp ed da a om pa ien s wi h his condi ion. All Po uguese heuma ology cen es we e in i ed o pa icipa e. Da a ega ding demog aphics, diagnosis, classi ica ion c i e ia, assessmen ools, and ea men we e collec ed. We aim o desc ibe he s uc u e o Reuma.p / asculi is and cha ac e ize he pa ien s egis e ed since i s de elopmen . Resul s: A o al o 687 pa ien s, wi h 1945 isi s, om 13 cen es we e egis e ed; mean age was 53.4 ± 19.3 yea s a las isi and 68.7% we e emales. The mos common diagnoses we e Behçe ’s disease (BD) (42.5%) and gian cell a e i is (GCA) (17.8%). Pa ien s wi h BD me he In e na ional S udy G oup c i e ia and he In e na ional C i e ia o BD in 85.3 and 97.2% o cases, espec i ely. Wi hin he mos common small- and medium- essel asculi ides egis e ed, median [in e qua ile ange] Bi mingham Vasculi is Ac i i y Sco e (BVAS) a i s isi was highes in pa ien s wi h ANCA-associa ed asculi is (AAV) (17.0 [12.0]); he e we e no di e ences in he p opo ion o pa ien s wi h AAV o polya e i is nodosa who elapsed (BVAS≥1) o had a majo elapse (≥1 majo BVAS i em) du ing p ospec i e assessmen (p= 1.00, p= 0.479). Biologic ea men was p esc ibed in 0.8% o pa ien s wi h GCA, 26.7% o pa ien s wi h AAV, and 7.6% o pa ien s wi h BD. The e we e 34 (4.9%) dea hs epo ed. (Con inued on nex page) © The Au ho (s). 2020 Open Access This a icle is licensed unde a C ea i e Commons A ibu ion 4.0 In e na ional License, which pe mi s use, sha ing, adap a ion, dis ibu ion and ep oduc ion in any medium o o ma , as long as you gi e app op ia e c edi o he o iginal au ho (s) and he sou ce, p o ide a link o he C ea i e Commons licence, and indica e i changes we e made. The images o o he hi d pa y ma e ial in his a icle a e included in he a icle's C ea i e Commons licence, unless indica ed o he wise in a c edi line o he ma e ial. I ma e ial is no included in he a icle's C ea i e Commons licence and you in ended use is no pe mi ed by s a u o y egula ion o exceeds he pe mi ed use, you will need o ob ain pe mission di ec ly om he copy igh holde . To iew a copy o his licence, isi h p://c ea i ecommons.o g/licenses/by/4.0/. The C ea i e Commons Public Domain Dedica ion wai e (h p://c ea i ecommons.o g/publicdomain/ze o/1.0/) applies o he da a made a ailable in his a icle, unless o he wise s a ed in a c edi line o he da a. * Co espondence: [email p o ec ed] 1 Rheuma ology Depa men , Hospi al de San a Ma ia - Cen o Hospi ala Uni e si á io Lisboa No e, Cen o Académico de Medicina de Lisboa, Lisbon, Po ugal 2 Unidade de In es igação em Reuma ologia, Ins i u o de Medicina Molecula , Faculdade de Medicina, Uni e sidade de Lisboa, Lisbon, Po ugal Full lis o au ho in o ma ion is a ailable a he end o he a icle Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 h ps://doi.o g/10.1186/s13023-020-01381-0 (Con inued om p e ious page) Conclusions: Reuma.p / asculi is is a bespoke web-based egis y adap ed o ou ine ca e o pa ien s wi h his o m o a e and complex diseases, allowing an e icien da a- eposi o y a a na ional le el wi h he po en ial o link wi h o he in e na ional da abases. I acili a es esea ch, ials ec ui men , se ice planning and benchma king. Keywo ds: Ra e diseases, Vasculi is, Pa ien egis ies, Da abase managemen sys ems, Pa ien epo ed ou come measu es In oduc ion The asculi ides a e a g oup o ela i ely uncommon and complex diseases. The inc eased clinical ial ac i i y and new he apeu ic op ions o pa ien s wi h asculi is ha e led o he de elopmen o long- e m speci ic egis- ies o his condi ion [1,2]. The Rheuma ic Diseases Po uguese Regis e , Reu- ma.p , was c ea ed in June 2008 wi h he aim o p o- spec i ely eco d clinical da a and ea men ad e se e ec s o pa ien s om all Po uguese heuma ology de- pa men s [3–5]. I has been a ailable as a web based online sys em since 2012 (www. euma.p ) and cu en ly includes speci ic modules o wel e di e en g oups o heuma ic diseases (au oin lamma o y synd omes, ea ly a h i is, ju enile idiopa hic a h i is, myosi is, os eoa h- i is, pso ia ic a h i is, heuma oid a h i is, scle o- de ma, Sjög en’s synd ome, spondyloa h i is, sys emic lupus e y hema osus and asculi is) in Po uguese and English language. O e 20,000 pa ien s and 170,000 isi s ha e been egis e ed, up o Decembe 2018, by 79 na ional and in e na ional heuma ology cen es. On Oc obe 2014, Reuma.p launched a dedica ed module o egis e pa ien s wi h asculi is. The a iables in- cluded we e chosen based on o he p e-exis ing Eu o- pean egis ies, pa icula ly UKIVAS (UK and I eland Vasculi is Regis y) [6], as pa o he Eu opean Vascu- li is Socie y (EUVAS) collabo a i e ne wo k wi h he long- e m goal o ha ing compa ible egis ies capable o analysing impo an ou comes in a la ge scale [7,8]. Ou aim is o desc ibe he s uc u e o Reuma.p / as- culi is and gi e a b ie o e iew on he cha ac e is ics o pa ien s egis e ed since i s de elopmen . Me hods Desc ip ion and con en s Reuma.p wo ks as an elec onic medical eco d, which enables p ospec i e collec ion and cen al s o age o enc yp ed da a. The da abase in o ma ion secu i y was app o ed by he Po uguese Na ional Commission o Da a P o ec ion and he e hics commi ees o he pa ici- pa ing ins i u ions. Regis e ed pa ien s a e equi ed o sign an in o med consen . All iden i iable da a is enc yp ed, only accessible h ough an indi idual pass- wo d a ibu ed o clinicians, who can only isualize da a ela ed o hei cen e. Reuma.p is managed by he Po uguese Socie y o Rheuma ology and has simila s uc u ed modules o each disease. Reuma.p use s can wo k indi e en ly in Po uguese and English, as he all sys em is bilingual. A de ailed desc ip ion o i s gene al design and da a managemen has been published else- whe e [3]. The Reuma.p / asculi is displays a ee o ma able o con en s on he le hand side (Fig. 1) whe e s anda d i ems, equal o all Reuma.p modules, and disease spe- ci ic i ems a e collec ed. All sec ions highligh ed in ed a e manda o y o comple ion a each pa ien isi . S anda d i ems include pa ien iden i ica ion, biobank code o linkage, in o med consen s a us, demog aphics (da e o bi h, gende , e hnici y, ma i al s a us, educa ion and wo king s a us), da e o disease onse and diagnosis, pas medical his o y, p e ious su ge ies, smoking and al- cohol habi s, accina ion, sc eening o ube culosis, diagnos ic es esul s, quali y o li e assessmen s (Sho o m 36 [SF-36], Eu oQol-5D [EQ-5D], Func ional As- sessmen o Ch onic Illness The apy [FACIT] Fa igue Scale, and Hospi al Anxie y and Dep ession Scale [HADS]), ea men his o y and epo o ad e se ad en s (which is elec onically linked o he Na ional Au ho i y o Medicines and Heal h P oduc s - INFARMED). In addi ion, pa ien s ha e hei own dedi- ca ed a ea ha can also be accessed online o comple e he pa ien epo ed ou comes be o e he medical isi . Wi hin he disease speci ic i ems, he 2012 Re ised In e na ional Chapel Hill Consensus Con e ence Nomencla u e o Vasculi ides [9] is used o selec he diagnosis sub ype (Fig. 1,sec ion 1), acco ding o which a possible classi ica ion c i e ia se is a ailable o com- ple ion: he 1990 Ame ican College o Rheuma ology (ACR) classi ica ion c i e ia o gian cell a e i is (GCA, o me empo al a e i is) [10], Takayasu’s a e i is (TAK) [11], polya e i is nodosa (PAN) [12], g anuloma- osis wi h polyangii is (GPA, o me Wegene ’s g anulo- ma osis) [13], eosinophilic g anuloma osis wi h polyangii is (EGPA, o me Chu g-S auss Synd ome) [14] and IgA asculi is (IgAV, o me Henoch–Schönlein pu pu a) [15]; he 1984 Lanham c i e ia also o EGPA [16]; he 2004 Ame ican Hea Associa ion Diagnos ic C i e ia o Kawasaki disease (KD) [17]; he 1990 In e - na ional S udy G oup c i e ia and he 2006 and 2013 In e na ional C i e ia o Behçe ’s disease (BD) [18–20] Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 2 o 12 and he 2011 p elimina y classi ica ion c i e ia o c yo- globulinaemic asculi is (CV) [21]. A e he comple ion o he c i e ia an au oma ic sen ence appea s a he bo - om o he sc een in o ming he submi ing physician i he pa ien s mee s he c i e ia (example o GCA in Sup- plemen a y Fig 1). We expec o upda e hese c i e ia a e he esul s om he DCVAS s udy (Diagnos ic and Classi ica ion C i e ia o Vasculi is) [22] a e published. Addi ional in o ma ion ega ding symp oms and signs, which may ha e no been collec ed in he classi ica ion c i e ia, a e a ailable o comple ion in a di e en sec- ion - clinical ea u es sec ion - wi h au oma ic expo - a ion o da a o equi alen i ems in he i s Bi mingham Vasculi is Ac i i y Sco e (BVAS) assessmen (Fig. 1, sec- ion 6). Mo eo e , in he gene al clinical da a sec ion (Fig. 1, sec ion 2), speci ic medica ions and illici d ugs known o be associa ed wi h he de elopmen o ascu- li is, we e ex ac ed om he DCVAS case epo o m (CRF) and a e inqui ed in his egis y. Gi en he i ems collec ed in he DCVAS CRF we e e ised and ag eed upon in a EUVAS mee ing in 2010, hey wo k as e e ences o da a collec ion in some Eu opean egis- ies (e.g. UKIVAS). Da a on speci ic asculi is immun- ology es s (an i-neu ophil cy oplasmic an ibodies [ANCA], an i–glome ula basemen memb ane [an i- GBM] and c yoglobulins), gene ics (human leukocy e an igen [HLA]-B51) (Fig. 1,sec ion 3) and biopsy ea- u es (based on he DCVAS CRF) a e also collec ed. Re- ga ding speci ic disease assessmen s: o p ognosis he Fi e Fac o sco e (FFS) - o iginal and e ised - is col- lec ed o ANCA-associa ed asculi ides (AAV) and PAN (Fig. 1,sec ion 4) [23,24] and he ca dio ascula isk sco e is a ailable o es ima e isk in GPA and mic o- scopic polyangii is (MPA) [25] (Fig. 1,sec ion 5); o dis- ease ac i i y he BVAS ( e sion 3) [26] is used and o damage he Vasculi is Damage Index (VDI) [27] (Fig. 1, sec ion 6). The disease e olu ion is p esen ed in he o m o g aphics and cha s and includes all measu e- men s a ailable du ing isi s o e y h ocy e sedimen a- ion a e (ESR), C- eac i e p o ein (CRP), c ea inine, eosinophil coun , BVAS, VDI and ANCA i es (Fig. 1, sec ion 7). Fig. 1 B ie summa y o he Reuma.p / asculi is con en s. ACR Ame ican College o Rheuma ology, AHA Ame ican Hea Associa ion, ANCA an i- neu ophil cy oplasmic an ibody, BVAS Bi mingham Vasculi is Ac i i y Sco e, CNS Cen al Ne ous Sys em, CRP C- eac i e p o ein, eGFR (MDRD) es ima ed glome ula il a ion a e by he modi ica ion o die in enal disease s udy equa ion, EGPA eosinophilic g anuloma osis wi h polyangii is, ELISA Enzyme-Linked Immunoso ben Assay, EQ-5D Eu oQol-5D, ESR e y h ocy e sedimen a ion a e, FACIT Func ional Assessmen o Ch onic Illness The apy Fa igue Scale, FFS Fi e Fac o Sco e, GBM glome ula basemen memb ane, GPA g anuloma osis wi h polyangii is, HADS Hospi al Anxie y and Dep ession Scale, HLA human leukocy e an igen, ICBD In e na ional C i e ia o Behçe ’s disease, IF immuno luo escence, ISG In e na ional S udy G oup, MPO myelope oxidase, PR3 P o einase 3, SF-36 Sho o m 36, UNK unknown, VDI Vasculi is Damage Index Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 3 o 12 Eligibili y Eligible pa ien s include all pa ien s wi h a diagnosis o asculi is. Al hough he s uc u e o Reuma.p / asculi is is cu en ly be e sui ed o collec da a om adul pa- ien s, we a e also including pa ien s aged below 18 yea s. A speci ic module o Paedia ic asculi is, includ- ing he EULAR/PRINTO/PRES c i e ia [28] and disease speci ic assessmen sco es ( o e.g. he Paedia ic Vascu- li is Ac i i y Sco e [29] and he Paedia ic Vasculi is Damage Index [30]), is p esen ly being de eloped. I will wo k as a “sub-module”wi hin he gene al Reuma.p / asculi is p o ocol, in o which all paedia ic asculi ic pa ien s will “mig a e”a e being ope a ional. O in e - es , Reuma.p cu en ly has modules o Ju enile Idio- pa hic A h i is and o he Paedia ic heuma ic condi ions and so has al eady ex ensi e unc ionali ies applied o Paedia ic heuma ology. In addi ion, pa ien s wi h asculi is seconda y o a connec i e issue disease a e no included in Reuma.p / asculi is i hei main diagnosis is a disease ha al eady has a Reuma.p spe- ci ic module (e.g. sys emic lupus e y hema osus, heuma oid a h i is and Sjög en’s synd ome). In hose cases, he clinical ea u e “ asculi is”is a ailable o se- lec ion in he di e en modules, allowing u u e iden i i- ca ion and easy ex ac ion o da a i needed. Howe e , only pa ien s egis e ed in Reuma.p / asculi is could be e alua ed using asculi is speci ic assessmen ools such as BVAS o VDI. Pa ien s can be egis e ed ei he a dis- ease p esen a ion o du ing ollow-up, in which case da a ela ed o disease onse was egis e ed e ospec i ely. Implemen a ion and ec ui men All cen es ha wo k wi h Reuma.p a e allowed o egis e pa ien s in o Reuma.p / asculi is. Be o e i s o i- cial launch, all Po uguese Rheuma ology cen es we e in i ed o pa icipa e in he ac i e egis y o pa ien s wi h asculi is unde he ca e o hei depa men . On he 31s o Janua y 2015, a asculi is wo kshop was held in which he i s esul s we e p esen ed and s a egies o imp o e he egis y o pa ien s we e discussed. T aining and ce i ica ion in pe o ming BVAS and VDI was also gi en a he wo kshop o ensu e co ec collec- ion o p ospec i e da a. Analysis We analysed all pa ien s egis e ed in Reuma.p / asculi is, up o July 2018, wi h desc ip i e analysis o he demo- g aphics; numbe o isi s pe pa ien ; disease du a ion; diagnosis acco ding o he Chapel Hill nomencla u e; clas- si ica ion c i e ia o he wo mos common ypes o ascu- li is egis e ed; ype o o gan in ol emen ; immunology and gene ics; imaging and biopsies esul s (when applic- able); immunosupp essi e ea men ; ad e se e en s; disease speci ic assessmen ools; pa ien epo ed ou - comes; and ollow-up. Rega ding he disease speci ic as- sessmen ools, we assessed he p opo ion o pa ien s wi h AAV and PAN who had a FFS o 0, 1 and ≥2, and calcula ed he median and in e qua ile ange (IQR) BVAS a i s isi and VDI a las isi o pa ien s wi h he mos common small- and medium- essel asculi ides eco ded. Di e ences in median BVAS and VDI be ween asculi - ides we e compa ed using Mann Whi ney U es s. Pa ien s who had longi udinal da a on BVAS eco ded, we e assessed o he occu ence o any elapses (BVAS ≥1) as well as o majo elapses (≥1 majo BVAS i em) [31]. The numbe o pa ien s who elapsed wi hin each sub ype o asculi is was compa ed using chi-squa e analyses. An ad- jus ed Cox p opo ional haza d model was used o iden i y a iables a ec ing su i al. S a is ical signi icance was se a p<0.05. Resul s Gene al da a A o al o 687 pa ien s om 13 di e en Po uguese cen- es we e egis e ed in o Reuma.p / asculi is. The num- be o pa icipa ing cen es inc eased wi h ime, bu a ound hal he pa ien s egis e ed came om an unique cen e ha has a dedica ed asculi is ou pa ien clinic [32]. Da a was p ospec i ely collec ed a each isi and in o al he e we e 1945 isi s egis e ed (2.8 isi s/pa- ien ). The mean age was 53.4 ± 19.3 yea s a las isi ; 68.7% we e emales. The diagnoses egis e ed acco ding o he 2012 Chapel Hill Consensus nomencla u e a e p esen ed in Table 1. The main ea u es o he mos common sub ypes o asculi is egis e ed (n ≥20) a e p esen ed in Table 2.A longe delay in diagnosis was mos commonly seen in pa ien s wi h Behçe ’s disease (BD), wi h an a e age o 82.5 ± 110.1 (0–672) mon hs om disease onse o diagnosis (disease onse was com- monly conside ed by he physicians as he i s disease mani es a ion a ibu able o asculi is); he sub ype o asculi is wi h less ime aken o diagnose since disease onse was GCA wi h an a e age o 4 ± 10.9 (0–84) mon hs. Classi ica ion c i e ia and diagnos ic modali ies The mos common diagnoses we e Behçe ’s disease (BD) (n= 298; 42.5%) and gian cell a e i is (GCA) (n= 125; 17.8%). All diagnoses eco ded we e based on physician’s clinical judgemen . Fo BD, 216 pa ien s had enough da a o assess he In e na ional S udy G oup (ISG) 1990 c i e ia and o 251 pa ien s, we could apply he In e - na ional C i e ia o BD (ICBD) (mos o he emaining pa ien s we e lacking e idence o he esul s o he pa he gy es ); 85.3% me he 1990 ISG c i e ia, 97.2% he 2006 ICBD, and 97.2% he 2013 ICBD. HLA-B51 yping was a ailable in a ound hal he BD cases (n= Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 4 o 12 131), wi h posi i e esul s in 45% (n= 59). Fo GCA, 118 pa ien s had enough da a o assess he 1990 Ame ican College o Rheuma ology classi ica ion c i e ia (mos o he emaining pa ien s we e lacking biopsy); 97.5% o 118 cases me he c i e ia. A biopsy o he empo al a - e y was pe o med in a ound hal he cases (n= 72), compa ible wi h asculi is in 65% (n= 47). Resul s o ul asound o he empo al ± axilla y a e ies we e a ail- able in 94 cases, 87% showing a non-comp essible halo compa ible wi h GCA (n= 82). A o al o 52 pa ien s wi h he diagnosis o GCA unde ook bo h exams: 56% (n= 29) had posi i e biopsy and ul asound; 21% (n= 11) had posi i e ul asound and nega i e biopsy; 8% (n=4) had posi i e biopsy and nega i e ul asound; and 15% (n= 8) had nega i e biopsy and ul asound. Recen ly, a endency has been obse ed o pe o ming ul asound, a he han biopsy, o diagnose pa ien s wi h GCA, as well as o complemen he ul asound assessmen o empo al a e ies wi h he e alua ion o axilla y a e ies. De ailed desc ip ion on axilla y assessmen was a ailable in 36/94 ul asound epo s, wi h 11/36 (30.5%) cases compa ible wi h la ge essel-GCA (LV-GCA). Mo eo e , a posi on emission omog aphy (PET) was pe o med o diagnose asculi is in i e pa ien s, e ealing LV-GCA in all o hem, a compu ed omog aphy angiog aphy (CTA) was pe o med in six pa ien s, compa ible wi h LV-GCA in only wo cases, and no pa ien wi h GCA was epo ed o unde go magne ic esonance angiog- aphy (MRA). In o al, imaging assessmen o la ge essel in ol emen o he disease was epo ed in 41/125 pa ien s wi h GCA, 16/42 (38.1%) compa ible wi h LV- GCA. In TAK, 36 de ailed imaging epo s we e a ail- able o 22/29 pa ien s (79%) wi h his diagnosis. Resul s we e compa ible wi h asculi is in 16/16 CTAs, 8/12 PETs, 4/4 ca he e -based dye angiog ams, 3/3 ul a- sounds, and 1/1 MRA. All 22 pa ien s had a leas one imaging modali y wi h epo ed asculi is. In o he less common sub ypes o asculi is egis- e ed, pa icula ly in small essel asculi is, he diag- nosis was mos ly based on immunology and biopsy esul s. ANCA es ing was a ailable in 87.0% o pa- ien s wi h AAV and 80.8% o pa ien s wi h PAN; Table 2shows espec i e ANCA s a us and sub ype. Biopsy esul s we e a ailable in 84.6, 58.5, 37.9 and 36.4% o pa ien s wi h PAN, GPA, EGPA and MPA, espec i ely. Table 3shows he numbe o biopsies ob ained om di e en si es and pe cen age o cases compa ible wi h asculi is. In pa ien s wi h he diag- nosis o c yoglobulinaemic asculi is, he c yoglobu- lins sub ype was a ailable in 60% o cases (n= 12): ype II was he mos common sub ype (58.3%), ollowed by ype I (25.0%) and ype III (16.7%). In pa- ien s wi h associa ed hepa i is C in ec ion, 80% we e ype II (n= 4) and 20% we e ype I (n=1). Table 1 Diagnosis acco ding he 2012 Re ised In e na ional Chapel Hill Consensus Con e ence Nomencla u e o Vasculi ides Sub- ype o asculi is N (%) La ge essel asculi is Takayasu’s a e i is 28 (4) Gian cell a e i is 125 (17.8) Non-classi iable la ge essel asculi is 10 (1.4) Medium essel asculi is Polya e i is nodosa b 26 (3.7) Kawasaki disease 1 (0.1) Non-classi iable medium essel asculi is 2 (0.3) Small essel asculi is An i-neu ophil cy oplasmic an ibody (ANCA)-associa ed asculi is Mic oscopic polyangii is 22 (3.1) G anuloma osis wi h polyangii is 41 (5.8) Eosinophilic g anuloma osis wi h polyangii is 29 (4.1) Non-classi iable ANCA-associa ed asculi is 11 (1.6) Immune complex small essel asculi is C yoglobulinaemic asculi is 20 (2.9) IgA asculi is 16 (2.3) Va iable essel asculi is Behçe ’s disease 298 (42.5) Cogan’s synd ome 12 (1.7) Single-o gan asculi is Cu aneous leukocy oclas ic angii is 16 (2.3) Cu aneous a e i is b 4 (0.6) P ima y cen al ne ous sys em asculi is 3 (0.4) O he 10 (1.4) Vasculi is associa ed wi h sys emic disease Rheuma oid asculi is 2 (0.3) O he 11 (1.6) Vasculi is associa ed wi h p obable e iology Hepa i is C i us-associa ed c yoglobulinaemic asculi is 5 (0.7) Hepa i is B i us-associa ed asculi is 1 (0.1) D ug-associa ed immune complex asculi is 1 (0.1) Cance -associa ed asculi is 2 (0.3) O he 5 (0.7) TOTAL a 701 (100) a The numbe o diagnoses is highe han he numbe o pa ien s, gi en ha in 14 cases mo e han one diagnosis was selec ed: six pa ien s wi h c yoglobulinaemic asculi is and hepa i is C i us-associa ed c yoglobulinaemic asculi is (n= 5) o o he asculi is associa ed wi h sys emic disease (n= 1); h ee pa ien s wi h cu aneous leukocy oclas ic angii is and o he asculi is associa ed wi h sys emic disease (n=2)o non-classi iable la ge essel asculi is (n= 1); wo pa ien s wi h single- o gan asculi is and g anuloma osis wi h polyangii is (n= 1) o o he asculi is associa ed wi h sys emic disease (n= 1); wo pa ien s wi h o he asculi is associa ed wi h sys emic disease and polya e i is nodosa (n= 1) o non-classi iable ANCA-associa ed asculi is (n= 1); and one pa ien wi h Takayasu‘s a e i is and Hepa i is B i us-associa ed asculi is b All pa ien s wi h polya e i is nodosa had sys emic in ol emen o he disease; all pa ien s wi h cu aneous a e i is had limi ed o ms o polya e i is nodosa Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 5 o 12 Table 2 Demog aphics, o gan in ol emen , disease assessmen s and ea men o he mos common sub ypes o asculi is egis e ed in Reuma.p / asculi is TAK GCA PAN MPA GPA EGPA CV BD Numbe o pa ien s (N) 28 125 26 22 41 29 20 298 Demog aphics Female/male a io 6 1.8 0.9 3.4 1.6 2.2 4 3 Mean age a onse , yea s (SD) 32.1 74.4 40.4 59.8 47.6 48.1 57.8 27 (13.8) (8) (20.5) (12.5) (14.8) (16.3) (12.8) (12.7) Mean age a diagnosis, yea s (SD) 34.5 74.7 42.5 60.7 50 51.7 58.7 33.8 (14.6) (7.8) (18.9) (12.3) (14.1) (14.9) (13.6) (12.1) Mean age a las isi , yea s (SD) 40 77.6 55.8 62.3 56.4 57.6 59.4 43.9 (15.8) (7.9) (18.1) (15.2) (12.1) (15.5) (15.3) (14.9) O gan in ol emen (%) Cons i u ional symp oms 56.5 59.5 62.5 60.0 69.4 45.8 47.1 26.6 Musculoskele al 34.8 60.7 79.2 70.0 65.7 54.2 76.5 60.2 Skin 4.5 1.7 75.0 30.0 47.2 60.0 75.0 74.3 Eyes 21.7 47.1 12.5 10.0 31.4 16.7 11.8 36.8 ENT 8.7 50.0 8.7 30.0 82.9 62.5 11.8 4.5 Ches / pulmona y 9.1 1.7 20.8 45.0 58.3 100 –4.5 Ca dio ascula 87.5 69.7 50.0 10.0 8.6 29.2 17.6 17.3 Gas oin es inal 29.2 4.9 20.8 20.0 17.1 16.7 11.8 98.5 O al ulce a ion 4.2 ––15.0 8.6 8.3 –98.5 O he symp oms 25.0 4.9 20.8 5.0 8.6 8.3 11.8 16.4 Geni ou ina y 52.2 3.3 33.3 80.0 58.3 12.5 5.9 83.6 Geni al ulce a ion 4.3 ––––––83.6 O he symp oms 47.8 3.3 33.3 80.0 58.3 12.5 5.9 4.0 Neu ologic 54.4 88.6 45.8 40.0 42.9 66.7 47.1 19.0 Diagnos ic es s c-ANCA o ANCA-PR3 posi i i y N/N o pa ien s (%) 0/14 0/36 0/21 4/21 26/36 3/23 0/15 0/93 (0.0) (0.0) (0.0) (19.0) (72.2) (13.0) (0.0) (0.0) p-ANCA o ANCA-MPO posi i i y N/N o pa ien s (%) 0/14 0/36 0/21 16/21 6/36 10/23 0/15 1/92 (0.0) (0.0) (0.0) (76.2) (16.7) (43.5) (0.0) (1.1) Vascula imaging wi h asculi is a N/N o pa ien s (%) 22/22 85/95 4/5 −/−−/−−/−−/−5/8 (100) (89.5) (80.0) (62.5) Biopsy compa ible wi h asculi is b N/N o pa ien s (%) 2/3 47/72 16/22 6/8 7/21 6/11 1/1 −/− (66.6) (65.3) (72.3) (75.0) (33.3) (54.5) (100) Disease assessmen s FFS 1996 N/N o pa ien s (%) FFS = 0 ––16/23 7/20 –17/23 –– (69.6) (35.0) (73.9) FFS = 1 5/23 5/20 6/23 (21.7) (25.0) (26.1) FFS ≥2 2/23 8/20 0/23 (8.7) (40.0) (0.0) FFS 2011 N/N o pa ien s (%) FFS = 0 ––18/23 6/20 18/36 10/24 –– (78.3) (30.0) (50.0) (41.7) FFS = 1 4/23 9/20 13/36 13/24 Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 6 o 12 Disease assessmen , ea men , and ollow-up Disease assessmen in pa ien s wi h asculi is a ge s ou main domains - ac i i y, damage, p ognosis and quali y o li e - and i is based on he combina ion o physical examina ion, labo a o y bioma ke s, imaging modali ies and assessmen ools. In la ge- essel ascu- li is, gi en he e a e no speci ic moni o ing ools, disease assessmen is mos ly based on clinical symp oms, con- en ional acu e phase ma ke s (e y h ocy e sedimen a- ion a e [ESR] and C- eac i e p o ein [CRP]), and imaging. A o al o 63 ul asounds we e pe o med in 35 pa ien s wi h an es ablished diagnosis o GCA o moni- o ing pu poses. In small- and medium- essel asculi is disease ac i i y is assessed by BVAS and damage by VDI. Al hough high BVAS and VDI sco es ha e been associa ed wi h in- c eased mo ali y in hese pa ien s [33,34], p ognosis is usually assessed using he FFS (FFS 1996 o MPA, EGPA and PAN; and e ised FFS 2009 o all AAV and PAN, bu no ye alida ed on non-F ench pa ien s). Table 2shows a FFS o ≤1 o mos o he AAV and PAN, sugges ing ha mos pa ien s egis e ed a e Table 2 Demog aphics, o gan in ol emen , disease assessmen s and ea men o he mos common sub ypes o asculi is egis e ed in Reuma.p / asculi is (Con inued) TAK GCA PAN MPA GPA EGPA CV BD (17.4) (45.0) (36.1) (54.2) FFS ≥2 1/23 5/20 5/36 1/24 (4.3) (25.0) (13.9) (4.1) Median BVAS 3 a i s isi (IQR) ––12.0 17.5 17.0 15.0 8.0 – (6.0) (9.0) (15.5) (12.0) (10.5) Median VDI a i s isi (IQR) ––3.0 3.0 1.5 3.0 1.0 – (3.0) (3.0) (2.8) (3.0) (3.0) T ea men wi h DMARDs (%) Syn he ic DMARDs Aza hiop ine 16.0 0.8 70.8 68.4 41.0 39.3 22.2 30.3 Colchicine ––––.–5.6 75.3 Cyclophosphamide o al ––8.3 5.3 23.1 –5.6 0.8 Cyclophosphamide IV 16.0 0.8 41.7 42.1 41.0 17.9 11.1 5.2 Cyclospo ine –––5.3 2.6 –16.7 12.7 Hyd oxychlo oquine ––4.2 –5.1 –16.7 2.0 Le lunomide ––––––5.6 – Me ho exa e 64.0 36.1 33.3 10.5 43.6 17.9 16.7 10.0 Mycophenola e mo e il ––8.3 21.1 5.1 3.6 5.6 0.8 Sul asalazine –––––––4.8 Biological DMARDs Adalimumab –––––––2.4 E ane cep –––––––1.2 In liximab 4.0 –8.3 ––––5.6 Mepolizumab –––––3.6 –– Ri uximab ––8.3 26.3 41.0 3.6 16.7 – Tocilizumab 12.0 0.8 –––––0.4 ANCA An i-neu ophil cy oplasmic an ibody, BD Behçe ’s disease, BVAS 3 Bi mingham Vasculi is Ac i i y Sco e e sion 3, c-ANCA Cy oplasmic ANCA:CV C yoglobulinaemic asculi is, DMARDs Disease-modi ying an i- heuma ic d ugs, EGPA Eosinophilic g anuloma osis wi h polyangii is, ENT Ea nose and h oa , FFS Fi e Fac o Sco e, GCA Gian cell a e i is, GPA G anuloma osis wi h polyangii is, IQR In e qua ile ange, IV In a enous, LVV La ge essel asculi is, MPA Mic oscopic polyangii is, MPO Myelope oxidase, PAN Polya e i is nodosa, p-ANCA Pe inuclea ANCA, PR3 P o einase 3, SD S anda d de ia ion, TAK Takayasu’s a e i is, VDI Vasculi is Damage Index a In LVV, ul asound showing halo sign, angiog aphy showing ascula wall hickening, enhancemen , s enosis, occlusion, o aneu ysms, o PET showing FDG up ake o he ao a o i s majo b anches. In PAN, angiog aphy showing mul iple mic oaneu ysms. In BD, angiog aphy showing h ombosis, ascula wall hickening, enhancemen , s enosis, occlusion, o aneu ysms b In LVV, p esence o a e i is, o en g anuloma ous, a ec ing he ao a o i s majo b anches. In PAN, nec o izing a e i is o medium o small a e ies. In AAV, nec o izing asculi is p edominan ly a ec ing small essels: in EGPA eosinophil- ich and nec o izing g anuloma ous in lamma ion, in GPA nec o izing g anuloma ous in lamma ion, and in MPA nec o izing in lamma ion wi h absence o g anulomas. In CV, asculi is a ec ing small essels wi h c yoglobulin immune deposi s Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 7 o 12 expec ed o ha e a good chance o su i al a 5 yea s. Disease ac i i y a i s e alua ion was highe in pa ien s wi h AAV, wi h a median [IQR] BVAS o 17.0 [12.0], in compa ison o PAN (BVAS 12.0 [6.0]; p= 0.025) and c yoglobulinaemic asculi is (BVAS 8.0 [10.5]; p= 0.002). The e we e no di e ences in cumula i e damage a las isi be ween pa ien s wi h AAV and PAN (median [IQR] VDI 2.0 [3.0] s. 3.0 [3.0], p= 0.847); howe e , me- dian [IQR] VDI o pa ien s wi h c yoglobulinaemic as- culi is (1.0 [3.0]) was signi ican ly lowe in compa ison o PAN (p= 0.001) and AAV (p< 0.001). In addi ion, no di e ences in disease ac i i y a i s isi and cumula i e damage a las assessmen we e ound amongs each sub ype o AAV (p> 0.05). P ospec i e BVAS assessmen was a ailable o 12 pa ien s wi h PAN (collec ed in 74 isi s), 36 pa ien s wi h AAV (collec ed in 125 isi s) and 2 pa ien s wi h CV (collec ed in 5 isi s). In PAN, 6/12 (50%) pa ien s had a leas one disease elapse eco ded (1/6 wi h a majo elapse), in AAV, 18/36 (50%) pa ien s had a leas one elapse eco ded (7/18 wi h a majo e- lapse); and in CV, 1/2 (50%) pa ien s had a leas one e- lapse eco ded (co esponding o a majo elapse). No di e ences we e ound in he p opo ion o pa ien s wi h a diagnosis o PAN o AAV who elapsed (p= 1.00) o had a majo elapse (p= 0.479). Mo eo e , amongs each sub ype o AAV, he e we e no di e ences ound in he numbe o pa ien s who elapsed (MPA 4/10, GPA 8/17, and EGPA 6/9; p> 0.05) o who had a majo disease e- lapse (MPA 2/4, GPA 2/8, and EGPA 2/6; p> 0.05). In all asculi ides quali y o li e has been assessed by gen- e ic measu es such as he SF-36, cu en ly included in he AAV co e se measu es o assessmen endo sed by he Ou come Measu es in Rheuma ology (OMERACT) Vasculi is Wo king G oup [35] and used in ials o la ge- essel asculi is (LVV) [36]. Howe e , he a e o i s comple ion in Reuma.p / asculi is was e y low; only 9.6% (n= 66) o pa ien s had a leas one SF-36 com- ple ed in he e alua ion o hei disease ( o al o 97 isi s), mos commonly assessed in BD (n= 55), ollowed by AAV (n= 4) and LVV (n= 4). O he pa ien epo ed ou comes we e also e alua ed in less hen 10% o pa- ien s: 67 pa ien s (9.8%) comple ed FACIT in 89 isi s; 64 pa ien s (9.3%) comple ed HADS in 87 isi s; and 43 pa ien s (6.3%) comple ed EQ-5D in 69 isi s. Da a on ea men wi h disease-modi ying an i heu- ma ic d ugs (DMARDs) o he mos common asculi - ides egis e ed is de ailed in Table 2.A o al o 59 biologic DMARDs, mos equen ly i uximab (n= 27; 45.7%), we e p esc ibed o 53 pa ien s. The ollowing p opo ion o pa ien s wi hin each sub ype o asculi is, in whom de ailed he apy was egis e ed, we e ea ed wi h biologic DMARDs: 4/25 (16.0%) pa ien s wi h TAK; 1/122 (0.8%) pa ien s wi h GCA; 3/24 (12.5%) pa ien s wi h PAN; 5/19 (26.3%) pa ien s wi h MPA; 16/39 (41.0%) pa ien s wi h GPA; 2/28 (7.1%) pa ien s wi h EGPA; 3/18 (16.7%) pa ien s wi h CV; and 19/251 (7.6%) wi h BD. Mo eo e , 77 ad e se ad en s ela ed o ea - men (in a ound ¼ o cases conside ed se e e) we e e- po ed in 53 pa ien s, mos commonly due o p ednisolone (n= 18; 23%), ollowed by me ho exa e (n= 15; 19%) and aza hiop ine (n= 10; 13%). Dea hs we e epo ed in 34 (4.9%) pa ien s (20 emales and 14 males), a a mean age o 72.6 ± 15.5 [30–98] yea s and mean disease du a ion o 4.9 ± 5.7 [0–22] yea s; howe e , speci ic cause o dea h was a ailable in only 10 cases, none o which di ec ly ela ed o ea men . In ec- ion was he mos common cause o dea h (n= 4; e- spi a o y in ec ion in h ee cases and u osepsis in one case), ollowed by ca dio ascula e en s (n= 3; s oke, hea a ack, and pulmona y embolism), complica ions o he disease (n= 2; ischaemic coli is in a pa ien wi h PAN and complica ion o an ao ic aneu ysm su ge y in a pa ien wi h TAK) and acu e kidney inju y (n= 1). Dea hs we e mos commonly epo ed in pa ien s wi h he diagnosis o GCA (n= 11), ollowed by AAV (n= 6), CV (n= 5), PAN (n= 2), TAK (n= 2), BD (n= 2), and Table 3 Biopsies compa ible wi h asculi is pe o med in pa ien s wi h he diagnosis o polya e i is nodosa o ANCA-associa ed asculi ides pe si e o in ol emen PAN GPA EGPA MPA Pa ien s who unde wen biopsy (N) 22 21 11 8 Posi i e biopsies pe si e a (N/N o al pe o med) (%) •Ea , nose and h oa (ENT) –2/12 (16.7) 1/3 (33.3) 1/3 (33.3) •Kidney –3/8 (37.5) –6/8 (75.0) •Lung –0/6 (0.0) 1/2 (50.0) – •Skin 13/16 (81.3) 1/2 (50.0) 3/8 (37.5) – •Pe iphe al ne e 1/1 (100) 1/3 (33.3) 2/2 (100) 2/2 (100) •In es ine 1/1 (100) ––– •O he 2/7 (28.6) 0/1 (0.0) 0/1 (0.0) – a Compa ible wi h asculi is EGPA Eosinophilic g anuloma osis wi h polyangii is, GPA G anuloma osis wi h polyangii is, MPA Mic oscopic polyangii is, PAN Polya e i is nodosa Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 8 o 12 o he sub ypes o asculi is (n= 6). Howe e , an adjus ed Cox p opo ional haza d model o age and sex, demon- s a ed ha he e was no s a is ically signi ican di e ence in e ms o su i al be ween pa ien s wi h he diagnosis o GCA and o he asculi ides (HR 0.53, 95% CI: 0.21–1.36), and AAV and o he asculi ides (HR 1.08, 95% CI: 0.42– 2.79). Pa ien s wi h AAV who unde wen biologic DMARDs p esen ed an inc eased a e o 5-yea mo ali y (HR 16.44, 95% CI 1.71–157.65), bu no di e ences in su - i al we e ound be ween AAV pa ien s wi h a FFS o 0 and a FFS o ≥1 (1996 FFS: HR 5.51, 95% CI 0.22–140.17; 2009 FFS: HR 0.69, 95% CI 0.42–11.29). The e we e h ee pa ien s discha ged om hospi al ca e in o gene al p ac- ice due o disease emission (GCA [n= 1], BD [n=1], and cu aneous leukocy oclas ic angii is [n= 1]) and 43 cases o los o ollow-up (mos equen ly in pa ien s wi h BD [n= 17] and GCA [n=8]). Discussion Reuma.p / asculi is is an e icien elec onic clinical ec- o d and online egis y o pa ien s wi h he diagnosis o asculi is, designed o eco d all ele an da a in clinical p ac ice ollowing a s anda dised app oach. I p o ides an oppo uni y o imp o e he quali y o clinical ca e in his g oup o a e diseases and cha ac e ize he na u al his o y o asculi is cap u ed by di e en Po uguese Rheuma ology cen es. Reuma.p / asculi is wo ks as a da a eposi o y a a na- ional le el wi h he po en ial o link wi h o he in e - na ional da abases. To ou knowledge, he e a e eigh o he Eu opean coun ies wi h an es ablished asculi is egis y: Uni ed Kingdom and I eland (UKIVAS) [6,37]; F ance (FVSG egis y) [38]; Spain (REVAS) [39]; Poland (POLVAS egis y) [7,40]; No way (No Vas) [41]; Czech Republic (Czech Regis y o AAV) [42]; and G eece (G eek Regis y o AAV) [43]. In addi ion, in many o he Eu opean coun ies he de elopmen o a asculi is egis y is on hei esea ch agendas (e.g. Ge many, Swi ze land, he Ne he lands and I aly) [8]. Reuma.p / asculi is was de eloped based on local expe ise and adap ions om o he p e-exis ing Eu opean egis ies (mainly UKIVAS) and he DCVAS CRF ( he la ges in e na ional s udy in asculi is) [22]. The e o e, i al- lows o compa ible u u e join expo s as pa o he EUVAS long- e m s a egy o aligning he Eu opean as- culi is egis ies and es ablish ag eed co e-se i ems p esen in all egis ies [8]. This capabili y is also an es- sen ial equi emen o he cu en Eu opean Re e ence Ne wo k ini ia i e o imp o e ca e o pa ien s wi h a e diseases, including asculi is [44]. Reuma.p / asculi is comp ises a g oup o a ious sub- ypes o asculi is, wi h di e en clinical mani es a ions, classi ica ion c i e ia and disease speci ic assessmen s and ou comes o in e es . In addi ion, he egis y o da a by he physicians is done on an en i ely olun a y basis. The e o e, balancing g anula i y and easibili y o da a collec ion, when cons uc ing he da abase, posed a chal- lenge. Al hough we encoun e ed missing da a in ou analysis, mainly on he p ospec i e disease assessmen s and cause o dea h, o e all ou da a was obus and allowed us o ob ain eliable in o ma ion on many o ou pa ien s’cha ac e is ics. Mo e han 1/3 o pa ien s had he diagnosis o BD (n= 298), la gely ollowed by GCA (n= 125). Al hough Reuma.p / asculi is is a egis y e lec ing he eali y o he Po uguese Rheuma ology cen es and is gene ally no in ended o epidemiologic s udies, he numbe o pa ien s wi h BD egis e ed (97.2% and 85.3% ul illing he ICBD and he ISG c i- e ia, espec i ely) exceeded he p e iously epo ed p e alence o 1.5 pe 100,000 in 1991 [45] and o 2.4 pe 100,000 in 1997 [46], highligh ing he need o new epi- demiologic s udies on his disease in Po ugal. Ano he in e es ing ac is ha he e we e mo e pa ien s diag- nosed wi h GCA ha unde ook ul asound in compa i- son o TAB (n= 94 s. n= 72), e lec ing mode n p ac ice and he inco po a ion o ul asound as an es- sen ial diagnos ic ool in he Rheuma ology se ing [47]. The immunosupp essi e ea men used in hese pa- ien s is in line wi h cu en Eu opean League Agains Rheuma ism (EULAR) ecommenda ions o he man- agemen o AAV, LVV and BD [48–50]; he ac ha only one pa ien wi h GCA (0.8%) was ea ed wi h oci- lizumab e lec s he low na ional accessibili y o his DMARD in he con ex o his indica ion, which is ex- pec ed o change in he nea u u e. The e we e some limi a ions ound in Reuma.p / as- culi is. Besides he expec ed missing da a and unde e- po ing (e.g. imaging esul s in LVV and PAN, biopsy esul s and ANCA s a us in AAV, de ailed ea men , e c.), e y equen ly encoun e ed in his so o egis y, he diagnosis o each sub ype o asculi is was pu ely based on he submi ing physician’s clinical knowledge and expe ience, he e o e lacking ex e nal alida ion. In addi ion, mos o he classi ica ion c i e ia used a e cu - en ly ou da ed and wai ing o he DCVAS esul s o ensu e p ope upda e [22]. Mo eo e , no all physicians who egis e ed pa ien s a e ei he ce i ied on he BVAS and VDI assessmen s, o ha e p ope p ac ice in e alua - ing pa ien s wi h asculi is using hese assessmen ools. Al hough we p o ided ini ial aining we ecommend mo e p ac ice and ce i ica ion sessions in he u u e o gua an ee da a quali y and co ec assessmen o disease ac i i y and damage, pa icula ly in pa ien s unde bio- logic DMARDs. We expec his egis y o con inue expanding, includ- ing mo e cen es, di e en special ies (e.g. Neph ology) and o he da a i ems. We aim o include he new AAV pa ien - epo ed ou comes (AAV-PRO) [51]; a speci ic Pon e e al. O phane Jou nal o Ra e Diseases (2020) 15:110 Page 9 o 12