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The Portuguese Registry of Hypertrophic Cardiomyopathy : overall results

Cardim, Nuno,Brito, Dulce,Lopes, Luís Rocha,Freitas, António,Araújo, Carla,Belo, Adriana,Gonçalves, Lino,Mimoso, Jorge,Olivotto, Iacopo,Elliott, Perry,Madeira, Hugo

Abstract

Introduction: We report the results of the Portuguese Registry of Hypertrophic Cardiomyopathy, an initiative that reflects the current spectrum of cardiology centers throughout the territory of Portugal. Methods: A direct invitation to participate was sent to cardiology departments. Baseline and outcome data were collected. Results: A total of 29 centers participated and 1042 patients were recruited. Four centers recruited 49% of the patients, of whom 59% were male, and mean age at diagnosis was 53±16 years. Hypertrophic cardiomyopathy (HCM) was identified as familial in 33%. The major reason for diagnosis was symptoms (53%). HCM was obstructive in 35% of cases and genetic testing was performed in 51%. Invasive septal reduction therapy was offered to 8% (23% of obstructive patients). Most patients (84%) had an estimated five-year risk of sudden death of <6%. Thirteen percent received an implantable cardioverter-defibrillator. After a median follow-up of 3.3 years (interquartile range [P25-P75] 1.3-6.5 years), 31% were asymptomatic. All-cause mortality was 1.19%/year and cardiovascular mortality 0.65%/year. The incidence of heart failure-related death was 0.25%/year, of sudden cardiac death 0.22%/year and of stroke-related death 0.04%/year. Heart failure-related death plus heart transplantation occurred in 0.27%/year and sudden cardiac death plus equivalents occurred in 0.53%/year. Conclusions: Contemporary HCM in Portugal is characterized by relatively advanced age at diagnosis, and a high proportion of invasive treatment of obstructive forms. Long-term mortality is low; heart failure is the most common cause of death followed by sudden cardiac death. However, the burden of morbidity remains considerable, emphasizing the need for diseasespecific treatments that impact the natural history of the disease.

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Re Po Ca diol. 2018;37(1):1---10 www. e po ca diol.o g Re is a Po uguesa de Ca diologia Po uguese Jou nal o Ca diology ORIGINAL ARTICLE The Po uguese Regis y o Hype ophic Ca diomyopa hy: O e all esul s Nuno Ca dima,∗, Dulce B i ob, Luís Rocha Lopesc,d, An ónio F ei ase, Ca la A aújo , Ad iana Belog, Lino Gonc¸al esh, Jo ge Mimosoi, Iacopo Oli o oj,m, Pe y Ellio k,m, Hugo Madei al, on behal o he pa icipa ing cen es1 aHospi al da Luz, Lisboa, Po ugal; Faculdade de Ciências Médicas, Uni e sidade No a de Lisboa, Lisboa, Po ugal bHospi al de San a Ma ia, Cen o Hospi ala Lisboa No e (CHLN), Cen o Ca dio ascula da Uni e sidade de Lisboa (CCUL), Faculdade de Medicina, Uni e sidade de Lisboa, Lisboa, Po ugal cBa s Hea Cen e, Ba s Heal h NHS T us ; Ins i u e o Ca dio ascula Science, Uni e si y College London, Uni ed Kingdom dCen o Ca dio ascula da Uni e sidade de Lisboa, Lisboa, Po ugal eHospi al Fe nando da Fonseca, Amado a-Sin a, Po ugal Cen o Hospi ala de T ás-os-Mon es e Al o Dou o, EPE, Hospi al de São Ped o, Vila Real, Po ugal; Epidemiology Resea ch Uni (EPIUni ), Ins i u o de Saúde Pública, Uni e sidade o Po o (ISPUP), Po o, Po ugal gSociedade Po uguesa de Ca diologia, Depa amen o de Bioes a ís ica, Coimb a, Po ugal hCen o Hospi ala e Uni e si á io de Coimb a-Hospi al Ge al; Faculdade de Medicina da Uni e sidade de Coimb a, Coimb a, Po ugal iCen o Hospi ala do Alga e, Fa o, Po ugal jCa eggi Uni e si y Hospi al, Flo ence, I aly kBa s Hea Cen e, Ba s Heal h NHS T us / Ins i u e o Ca dio ascula Science, Uni e si y College London, Uni ed Kingdom lCen o Ca dio ascula da Uni e sidade de Lisboa, Lisboa, Po ugal mMembe o he Scien ific Commi ee o PRo-HCM Recei ed 17 July 2017; accep ed 8 Augus 2017 A ailable online 19 Janua y 2018 KEYWORDS Hype ophic ca diomyopa hy; Regis y; Le en icula hype ophy; Ou come Abs ac In oduc ion: We epo he esul s o he Po uguese Regis y o Hype ophic Ca diomyopa hy, an ini ia i e ha eflec s he cu en spec um o ca diology cen e s h oughou he e i o y o Po ugal. Me hods: A di ec in i a ion o pa icipa e was sen o ca diology depa men s. Baseline and ou come da a we e collec ed. Resul s: A o al o 29 cen e s pa icipa ed and 1042 pa ien s we e ec ui ed. Fou cen e s ec ui ed 49% o he pa ien s, o whom 59% we e male, and mean age a diagnosis was 53±16 yea s. Hype ophic ca diomyopa hy (HCM) was iden ified as amilial in 33%. The majo eason o diagnosis was symp oms (53%). HCM was obs uc i e in 35% o cases and gene ic es ing ∗Co esponding au ho . E-mail add ess: [email p o ec ed] (N. Ca dim). 1Lis o pa icipa ing cen e s and p incipal in es iga o s a e p o ided in Appendix A. h ps://doi.o g/10.1016/j. epc.2017.08.005 0870-2551/© 2017 Sociedade Po uguesa de Ca diologia. Published by Else ie Espa˜ na, S.L.U. All igh s ese ed. 2174-2049 2 N. Ca dim e al. was pe o med in 51%. In asi e sep al educ ion he apy was o e ed o 8% (23% o obs uc- i e pa ien s). Mos pa ien s (84%) had an es ima ed fi e-yea isk o sudden dea h o <6%. Thi een pe cen ecei ed an implan able ca dio e e -defib illa o . A e a median ollow-up o 3.3 yea s (in e qua ile ange [P25-P75] 1.3-6.5 yea s), 31% we e asymp oma ic. All-cause mo ali y was 1.19%/yea and ca dio ascula mo ali y 0.65%/yea . The incidence o hea ailu e- ela ed dea h was 0.25%/yea , o sudden ca diac dea h 0.22%/yea and o s oke- ela ed dea h 0.04%/yea . Hea ailu e- ela ed dea h plus hea ansplan a ion occu ed in 0.27%/yea and sudden ca diac dea h plus equi alen s occu ed in 0.53%/yea . Conclusions: Con empo a y HCM in Po ugal is cha ac e ized by ela i ely ad anced age a diagnosis, and a high p opo ion o in asi e ea men o obs uc i e o ms. Long- e m mo ali y is low; hea ailu e is he mos common cause o dea h ollowed by sudden ca diac dea h. Howe e , he bu den o mo bidi y emains conside able, emphasizing he need o disease- specific ea men s ha impac he na u al his o y o he disease. © 2017 Sociedade Po uguesa de Ca diologia. Published by Else ie Espa˜ na, S.L.U. All igh s ese ed. PALAVRAS-CHAVE Mioca diopa ia hipe ófica; Regis o; Hipe ofia en icula esque da; P ognós ico Regis o Po uguês de Mioca diopa ia Hipe ófica: esul ados globais Resumo Obje i o: Ap esen ac¸ão dos esul ados do Regis o Po uguês de Mioca diopa ia Hipe ófica. Me odologia: Con i e di e o aos di e en es cen os de ca diologia de Po ugal, com análise de dados basais e de seguimen o. Resul ados: Fo am 29 os cen os pa icipan es e 1042 doen es incluídos. Qua o cen os incluí am 49% dos doen es, 59% do sexo masculino, idade média de diagnós ico 53 ± 16 anos. A doenc¸a oi conside ada amilia em 33% e a p esenc¸a de sin omas oi a p incipal causa de diagnós ico (53%). A mioca diopa ia hipe ófica oi obs u i a em 35%. O es udo gené ico oi e e uado em 51%. Oi o po cen o dos doen es fize am e apêu ica in asi a de educ¸ão sep al (23% dos doen es com obs uc¸ão). A maio ia dos doen es (84%) ap esen a a um isco es imado de mo e súbi a aos 5 anos < 6%. Em 13% oi colocado desfib ilhado ca dio e so implan á el. Após um seguimen o de 3,3 anos, in e alo in e qua il (P25-P75) 1,3---6,5 anos, 31% es a am assin- omá icos. A mo alidade o al oi de 1,19%/ano e a ca dio ascula de 0,65%/ano. A incidência de mo e po insuficiência ca diaca oi de 0,25%/ano, a de mo e súbi a de 0,22%/ano e a de mo e po aciden e ascula ce ebal de 0,04%/ano. A mo alidade po insuficiência ca díaca e ansplan e ca díaco oi de 0,27%/ano e a de mo e súbi a e equi alen es de 0,53%/ano. Conclusões: A mioca diopa ia hipe ófica em Po ugal ap esen a idade de diagnós ico ele ada e é equen e o a amen o in asi o de o mas obs u i as. A mo alidade é baixa, a insuficiência ca díaca é a p incipal causa de mo e, seguida pela mo e súbi a. A doenc¸a ap esen a ele ada mo bilidade, ealc¸a a necessidade do desen ol imen o de a amen os específicos com impac o na sua his ó ia na u al. © 2017 Sociedade Po uguesa de Ca diologia. Publicado po Else ie Espa˜ na, S.L.U. Todos os di ei os ese ados. Lis o abb e ia ions AF a ial fib illa ion ASA alcohol sep al abla ion CMR ca diac magne ic esonance CRF case epo o m HCM hype ophic ca diomyopa hy HF hea ailu e ICD implan able ca dio e e -defib illa o IVS in e en icula sep um LVH le en icula hype ophy PRo-HCM Po uguese Regis y o Hype ophic Ca diomyopa hy SCD sudden ca diac dea h TIA ansien ischemic a ack The Po uguese Regis y o Hype ophic Ca diomyopa hy 3 In oduc ion Hype ophic ca diomyopa hy (HCM) ep esen s an impo - an heal h bu den as a cause o sudden ca diac dea h (SCD), hea ailu e (HF), a ial fib illa ion (AF) and s oke. HCM sha es many disad an ages o a e diseases, includ- ing limi ed ecogni ion, lack o p ospec i e s udies assessing ea men , and li le o delayed access o ad anced ea - men op ions wi hou enjoying hei egula o y benefi s.1 --- 4 Randomized clinical ials a e in equen in HCM and ec- ommenda ions a e la gely based on expe consensus.1 --- 4 Addi ionally, he majo i y o s udies s ill o igina e om e - ia y e e al cen e s, and li le is known abou he clinical p ofile and managemen o he disease a a na ionwide le el. The eal impac o gene ics and imaging echniques on ea - lie and wide ecogni ion o HCM, as well as o ad anced ea men op ions on ou comes, is also unknown. I is o pa amoun impo ance o cap u e hese changes and o p o ide answe s o hese ques ions.1,2,5 Acco dingly, he impo ance o clinical egis ies o HCM is inc easing, since hey p o ide he bes sou ce o eal- wo ld da a in specific coun ies and geog aphical egions. Assuming a p e alence o 1:5005 o HCM in gene al and o 1:3200 o ‘clinical HCM’6(pa ien s who come o medical a en ion), he numbe o pa ien s wi h HCM in Po - ugal (popula ion abou 10 million) is espec i ely a ound 20 0007and 3000.6Howe e , ew s udies ha e add essed his popula ion.8,9 Besides i s ele ance o na ional ca diologis s, he Po uguese HCM popula ion ep esen s an in e es ing sample because o he coun y’s ela i ely small size, homo- geneous popula ion and high pene a ion o heal h ca e. The Po uguese Regis y o Hype ophic Ca diomyopa- hy (PRo-HCM) was ins i u ed o collec in o ma ion on he ac ual si ua ion o HCM in Po ugal. I specifically assessed epidemiological, sociodemog aphic and clinical da a, cu - en s anda ds o diagnosis, ea men , ollow-up, and ou comes. Ano he aim was o de elop a eliable sou ce o in o ma ion o heal h p o essionals, pa ien s and amilies, on app op ia eness, e ec i eness and quali y o ca e. Me hods Regis y design and me hodology The PRo-HCM egis y was concei ed by he Wo king G oup on Myoca dial and Pe ica dial Diseases o he Po uguese Socie y o Ca diology, di ec ed by an execu i e and a sci- en ific commi ee, and managed in he Po uguese Na ional Cen e o Da a Collec ion in Ca diology (CNCDC). This s udy was o mula ed and conduc ed in compliance wi h he p in- ciples o he decla a ion o Helsinki, and app o ed by he Na ional Cen e o Da a P o ec ion. I was an obse a- ional, mul icen e , olun a y, non-manda o y s udy, wi h a wo-yea en ollmen pe iod (Ap il 2013-Ap il 2015), e o- spec i e bu including a p ospec i e upda e. A di ec in i a ion was made o ca diology depa men s na ionwide, cen al and egional, public and p i a e, aca- demic and non-academic, co e ing u al and u ban, coas al and inland a eas. Addi ionally, he egis y was ad e ised in he Po uguese Jou nal o Ca diology, mee ings and newsle e s. I he in i a ion was accep ed, he p incipal in es iga o ecei ed de ailed ins uc ions, a cen e iden- ifica ion numbe and a unique use name and passwo d o gain access o he elec onic case epo o m (CRF) (h p://www.spc.p /Regis osMioca diopa ia/Public/Login. aspx?Re u nU l=%2 Regis osMioca diopa ia%2 ). The CRF con ained se en sec ions: (1) pa ien iden ifica ion and demog aphic/epidemiological da a; (2) pas his o y and baseline clinical da a; (3) mo ali y and isk s a ifica ion; (4) diagnos ic es s; (5) gene ic es ing, amily sc eening, and gene ic counseling; (6) ea men ; (7) las assess- men (clinical cou se, ollow-up, and ou comes). In he diagnos ic es s sec ion he in es iga o s we e asked o en e he exams pe o med a he ime o fi s assess- men , including elec oca diog am (ECG), echoca diog am, ambula o y ECG, exe cise es , exe cise echoca diog am, ca diac magne ic esonance (CMR), and ca diac compu ed omog aphy. Cen e s we e asked o include all pa ien s wi h a diagno- sis o HCM ollowed a he cen e cu en ly o in he pas (no e ospec i e ime limi ), including hose al eady deceased a he ime o en ollmen . W i en in o med consen was ob ained om li ing pa ien s and om a p oxy o deceased pa ien s. Inclusion c i e ia we e age >18 yea s a he ime o en ollmen , and unexplained le en icula hype ophy (LVH): wall hickness ≥15 mm by imaging echniques (in fi s - deg ee ela i es10 ≥14 mm in he in e io in e en icula sep um (IVS) o la e al wall o ≥13 mm in he an e io IVS o in e io wall). Exclusion c i e ia we e seconda y LVH (g ade ≥2 hype ension11), mode a e o se e e ao ic s enosis,12 p e i- ously diagnosed ca diac o sys emic disease, and me abolic o mul i-o gan synd ome associa ed wi h LVH. A e he inclusion pe iod, ex a ime was p o ided o comple e he CRFs and o clean he da abase. The final da e o egis y closu e was Decembe 31, 2015. CRFs we e e iewed o confi m consis ency o da a. Whene e nec- essa y, que ies we e sen o in es iga o s. In he e en o epea ed pa ien s (same ini ials, gende and bi h da e), he one wi h he longe ollow-up ime was included. Defini ions Th oughou he s udy, mos da a a e ela i e o he ime o fi s isi . When clinically ele an , da a a he ime o diagnosis o HCM a e also shown. Follow-up ime was defined as ime om ini ial assess- men a he cen e o las assessmen o dea h. Sudden ca diac dea h (SCD) was defined as unexpec ed dea h occu ing wi hin one hou o symp om onse in pa ien s who had p e iously expe ienced a ela i ely s a- ble o une en ul clinical cou se. Resusci a ion om ca diac a es o app op ia e implan able ca dio e e -defib illa o (ICD) he apies o p ima y p e en ion we e conside ed as equi alen s o SCD. HF- ela ed dea h was defined as ha occu ing in he con ex o p og essi e ca diac decompensa ion, wi h decline in le en icula unc ion.13 Hea ansplan a ion was conside ed as equi alen o HF- ela ed dea h. S oke- ela ed dea hs in he se ing o pa oxysmal, pe - sis en o pe manen AF we e classified as AF-s oke ela ed 4 N. Ca dim e al. Viana do Cas elo Vila Real B aga Po o Viseu A ei o Gua da Cas elo B anco Coimb a Lei ia PORTUGAL San a em Lisbon Po aleg e E o a Se ubal Beja Fa o Madei a Azo es B aganca 45.0% 40.0% 35.0% 30.0% 25.0% 20.0% 15.0% 10.0% 5.0% 0.0% No h Cen al Lisbon Sou h + Islands Cen al; 7.7% No h; 31.8% Lisbon; 40.1% PRo-HCM Sou h + Islands; 20.4% PRo-HCM: no. o pa ien s pe cen e 180 160 140 120 100 80 60 40 20 0C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12C13 C14 C15C16 C17C18 C19 C20C21 C22 C23 C24 C25 C26 C27 C28 C29 53 45 7710 3477639 38 21 1 36 104 70 55 144 99 79 14 14 2 27 167 19 Figu e 1 Pa icipa ing cen e s in he P o-HCM egis y: dis ibu ion by egions and by cen e . Le : pa icipa ing cen e s (n=29); op igh : dis ibu ion o he 1042 pa ien s by egions o Po ugal: he Lisbon egion included he highes numbe o pa ien s and he cen al egion o Po ugal he lowes ; bo om igh : no e he he e ogenei y in e ms o pa ien s en olled pe cen e . dea hs. S oke- ela ed dea hs in he absence o documen ed AF we e no included in his g oup. Th omboembolic e en s, defined as s oke, ansien ischemic a ack (TIA) o sys emic pe iphe al embolism, we e eco ded.14 The classifica ion o iden ified gene ic a ian s was assigned o he in es iga o s, as pa hogenic/p obably pa hogenic, o unknown significance o benign/p obably benign, acco ding o cu en knowledge o hei pa hogenici y,15,16 as p o ided by gene ic labo a o ies ( hese da a we e no cen ally e iewed o co ec ed by he coo dina o s o he egis y). A gene ic s udy was defined as nega i e i no pa hogenic/p obably pa hogenic mu a ion was de ec ed and as in p og ess i no esul was p o ided a inclusion. S a is ical analysis Con inuous a iables we e exp essed as mean and s anda d de ia ion o as median and in e qua ile ange (IQR) (P25- P75). Ca ego ical a iables we e gi en as o al numbe and pe cen ages. Chi-squa e o Fishe es s we e used o com- pa isons o ca ego ical a iables and S uden ’s es s o con inuous a iables. Su i al was assessed by Cox p opo - ional haza d eg ession. Su i al cu es we e cons uc ed acco ding o he Kaplan-Meie me hod, and compa isons we e pe o med using he log- ank es . All p- alues we e wo-sided and conside ed significan when <0.05. All analy- ses we e pe o med using SPSS 19.0®. Resul s O he 62 ins i u ions con ac ed, 37 accep ed, and he final numbe o pa icipa ing cen e s was 29 (Figu e 1). The o al numbe o pa ien s was 1042. Figu es we e compa ed wi h o he na ional egis ies17,18 (Table 1). Baseline assessmen Almos hal o he pa ien s (n=514, 49%) came om he ou majo cen e s wi h specific in e es in HCM ( he o he 25 cen e s en olled 528 pa ien s, 51%) (Figu e 1). The Lisbon egion included he la ges numbe , ollowed by he No h egion, he Sou h and Islands, and he Cen al egion. O he 29 cen e s, only h ee included mo e han 100 pa ien s and eigh mo e han 50 pa ien s. Twen y-one cen e s included ewe han 50 pa ien s each, 13 cen e s ewe han 10 and six cen e s ewe han fi e. The pa ien coho showed a sligh p eponde ance o males. Mean age a diagnosis was 53±16 yea s and mo e han one qua e we e diagnosed o e he age o 65 yea s. The disease was classified as amilial in one hi d. A fi s consul a ion mos pa ien s we e symp oma ic19 (Table 2). Diagnos ic es s The ECG was abno mal in 964 indi iduals (93%). AF was eco ded in 117 (11%). The Po uguese Regis y o Hype ophic Ca diomyopa hy 5 Table 1 Compa ison be ween popula ions o na ional egis ies o hype ophic ca diomyopa hy. Po uguese egis y (PRo-HCM) I alian egis y17 F ench egis y18 Regis y pe iod 2013-2015 2000-2002 2005-2015 Coun y popula ion 10 million 50 million 66 million Pa ien s in egis y 1042 1677 1401 Es ima ed p e alence o HCM based on he CARDIA s udy: 1:5005 HCM pa ien s 20 000 100 000 132 000 Pa ien s included in egis y 5% 2% 1% Es ima ed p e alence o ‘clinical’ HCM: 1: 32006 Pa ien s wi h ‘clinical’ HCM 3125 16 000 18 750 Pa ien s included in egis y 33% 10% 7% HCM: hype ophic ca diomyopa hy. Table 2 Summa y o baseline cha ac e is ics and diagnos- ic es s. n % HCM pa ien s 1042 Male/ emale 613/429 59/41 Age a diagnosis 53±16 (9-88) Diagnosis >50 yea s 605 58 Diagnosis >65 yea s 281 27 Familial/spo adic 347/559 33/54 Non-obs uc i e HCM 613 59 Obs uc i e HCM 365 35 Reason o diagnosis Symp oms 551 53 Inciden al 319 31 Family sc eening 129 12 Symp oms a fi s consul a ion Asymp oma ic 311 30 Symp oma ic 715 69 Dyspnea 328 32 Angina 241 23 Palpi a ions 189 18 Syncope 95 9 NYHA I/II/III/IV 146/792/94/10 14/76/9/1 Imaging me hod o diagnosis Echoca diog aphy 932 89 CMR/CCT 110 11 Hol e 867 83 Exe cise es 437 42 Exe cise echoca diog aphy 175 17 CMR 475 46 CA 122 12 EMB 12 1 Gene ic es 528 51 CA: ca diac angiog aphy; CCT: ca diac compu ed omog aphy; CMR: ca diac magne ic esonance; EMB: endomyoca dial biopsy; HCM: hype ophic ca diomyopa hy; NYHA: New Yo k Hea Asso- cia ion unc ional class. Echoca diog aphic assessmen a en ollmen showed ha HCM was non-obs uc i e (ins an aneous peak Dopple in a- en icula p essu e g adien <30 mmHg) in 613 (59% o pa ien s) and obs uc i e in 365 (35%) (Table 2). O hese, 323 (88%) had obs uc ion a es and 42 (12%) had exe cise- induced obs uc ion only, du ing exe cise echoca diog aphy. Obs uc ion was a he le en icula ou flow ac in 89%. An apical aneu ysm was p esen in 23 pa ien s (2%). On ambula o y Hol e ECG moni o ing, AF was p esen in 118 pa ien s (11%). An exe cise es was ca ied ou in less han hal o he popula ion and exe cise echoca diog aphy in app oxima ely one fi h (Table 2). CMR was pe o med in almos hal o he coho . I s inc e- men al alue o e echoca diog aphy was he assessmen o fib osis (59%), diagnosis in alse-nega i e echoca diog ams (6%) and de ec ion o massi e LVH (4%). Risk s a ifica ion o sudden ca diac dea h a baseline (a he ime o he fi s isi ) Based on he Ame ican Hea Associa ion model o SCD2,20 (Supplemen a y Table 1), hal o he pa ien s had no isk ac- o s, one hi d had one isk ac o and 15% mo e han one isk ac o . Ou da a also showed ha acco ding o he Eu o- pean Socie y o Ca diology SCD isk sco e,1,21 he majo i y o pa ien s had a fi e-yea isk lowe han 4%. Gene ic es ing In o al, 51% o he pa ien s had unde gone gene ic es ing and in 40% o hese a pa hogenic/p obably pa hogenic mu a- ion was ound (Table 3). In his g oup, when he causa i e gene mu a ion was epo ed, he wo mos equen genes we e MYBPC3 and MYH7. T ea men Mos pa ien s (n=909; 87%) ecei ed medical ea men (Table 4). Sep al educ ion he apy was pe o med in 8% o he coho , 23% o he obs uc i e g oup. Ca diac su ge y was pe o med 2.6 imes mo e equen ly han ASA. Su ge y was pe o med in 11 cen e s (o hese, only wo pe o med mo e han 10 su ge ies). ASA was pe o med in ou cen e s (only one eached 10 p ocedu es). An ICD was implan ed in 13% o he popula ion, mainly o p ima y p e en ion. A pacemake was implan ed in 9%, usually o conduc ion diso de s. 6 N. Ca dim e al. Table 3 Resul s o gene ic es ing.15,16 n % HCM pa ien s es ed 528 51 Posi i e 210 40 VUS 40 8 Pa hogenic/p obably pa hogenic mu a iona210 MYBPC3 99 49 MYH7 56 28 TNNT2 25 12 TNNI3 10 5 TPM1 8 4 CRSP3 8 4 MYL3 2 1 MYL2 1 0.5 CRSP3: muscle LIM p o ein; HCM: hype ophic ca diomyopa- hy; MYBPC3: ca diac myosin-binding p o ein C; MYH7: myosin hea y chain; MYL2: egula o y myosin ligh chain; MYL3: essen- ial myosin ligh chain; TNNI3: ca diac oponin I; TNNT2: ca diac oponin T; TPM1: opomyosin; VUS: a ian s o unknown signi - icance. aRaw da a de i ed om CRF da a, inse ed by he in es iga- o s as epo ed by he gene ic labo a o y and no confi med by he coo dina o s o he egis y, including he a ibu ed classi- fica ion o ‘pa hogenic/p obably pa hogenic mu a ion’. Table 4 T ea men in he PRo-HCM egis y. n % Be a-blocke s 768 74 CCBs 262 25 Disopy amide 19 2 Amioda one 151 15 An icoagulan s 276 27 VKAs 208 75 NOACs 60 22 ACEIs 226 22 ARBs 178 17 Diu e ics 252 24 Ni a es 24 2 ASA 23 2 Su ge y 61 6 ICD 140 13 P ima y p e en ion 123 88 Seconda y p e en ion 15 11 Pacemake 92 9 B adya hy hmia 64 70 G adien educ ion 19 21 ACEIs: angio ensin-con e ing enzyme inhibi o s; ARBs: angio ensin ecep o blocke s; ASA: alcohol sep al abla ion; CCBs: calcium channel blocke s; ICD: implan able ca dio e e defib illa o : NOACs: new o al an icoagulan s; VKAs: i amin K an agonis s. Follow-up, mo bidi y and mo ali y Mean ollow-up was 5.3±6.1 yea s, median 3.3 yea s (IQR [P25-P75] 1.3-6.5 yea s). A las assessmen , mos pa ien s we e symp oma ic (Figu e 2), usually wi h mild o mode a e symp oms. A small numbe (n=42, 4%) de eloped sys olic dys unc ion. All-cause mo ali y was 6.2% (Table 5). Ca dio ascula mo ali y was 3.4%, mos equen ly due o HF, ollowed by SCD and by s oke- ela ed dea h. In uni a ia e analysis, 16 o he p edefined a iables we e significan ly ela ed o mo ali y. Mul i a ia e analysis showed ou majo isk indica o s o ca dio ascula mo - ali y: la e diagnosis (>60 yea s), amily his o y o SCD, p og essi e sys olic dys unc ion and obs uc i e HCM (Sup- plemen a y Table 2). O he 12 pa ien s wi h SCD, se en we e be ween 40 and 65 yea s old, h ee we e olde han 65, and only wo we e aged unde 40 yea s. In a numbe o pa ien s SCD was abo ed by app op ia e ICD shocks in he se ing o p ima y p e en ion o documen ed success ul in- and/o ou -o -hospi al esusci a ion. The e o e, ac ual plus abo ed SCD occu ed in 29 pa ien s. The incidence o all-cause and ca dio ascula mo ali y was 1.19%/yea and 0.65%/yea , espec i ely; he incidence o HF- ela ed dea h was highe han ha o SCD, and he la - e was highe han ha o s oke. Howe e , he incidence o SCD dea h plus equi alen s was highe han he incidence o HF dea h, wi h o wi hou equi alen s (Table 5 and Figu e 3). Th omboembolic e en s occu ed in 65 pa ien s (6%) (s oke n=52, TIA n=11, pe iphe al embolism n=2). O hese, hal had documen ed AF. Compa ed wi h low- olume cen e s (<15 pa ien s included, n=16), high- olume (>100 pa ien s, n=3) cen e s had younge pa ien s and mo e amilial HCM and pe o med mo e gene ic es ing, amily sc eening and exclusion o phe- nocopies (Supplemen a y Table 3). Addi ionally, despi e he highe numbe o diagnos ic es s and o d ug p esc ip ions o high- olume cen e s, no majo di e ences in ou comes we e ound. Discussion The PRo-HCM egis y p o ides a de ailed con empo a y assessmen o he clinical p ofile, managemen s a egies and ou comes o HCM in Po ugal. While mos da a a e consis en wi h he exis ing li e a u e,17,18,22 he p esen findings show elemen s o no el y and some di e ences om he guidelines.1,2 Ou esul s a e impo an a bo h na ional and in e na ional le el, as se e al coun ies, wo ld- wide, may ace simila condi ions in he managemen o he disease. Epidemiological and sociodemog aphic da a The o al numbe o pa ien s included ep esen s abou 5% o he es ima ed p e alence in Po ugal,5,7 bu up o one hi d o he Po uguese popula ion wi h ‘clinical’ HCM.6 Acco dingly, his is, o ou knowledge, he mos comp e- hensi e na ional HCM egis y published.17,18,22 This na ional e o p o ides c edibili y o ou da a as ep esen a i e o he eal Po uguese scena io. The dis ibu ion o pa ien s be ween e e al and communi y-based cen e s ( ou cen- e s included hal o he pa ien s and 25 cen e s he o he hal ) shows ha a significan numbe o pa ien s a e ol- lowed in non- e e al cen e s. O no e, howe e , was he The Po uguese Regis y o Hype ophic Ca diomyopa hy 7 Popula ion 600 550 500 450 400 350 300 250 200 150 100 50 0Asymp oma ic Symp oma ic 327 578 600 500 400 300 200 100 0 Mild/Mode a e Se e e Unde e mined 15 41 522 Symp oma ic pa ien s 327 578 Figu e 2 Follow-up da a: symp oms a las assessmen . A he las assessmen mos pa ien s we e symp oma ic (le ), and he majo i y had mild o mode a e symp oms ( igh ). Table 5 Mo ali y in he PRo-HCM egis y. n Mo ali y a e To al mo ali y 65 1.19%/yea CV mo ali y 36 0.65%/yea HF- ela ed dea h 14 0.25%/yea SCD 12 0.22%/yea S oke- ela ed dea h 2 0.04%/yea O he 8 0.15%/yea SCD equi alen s 17 0.31%/yea SCD dea h plus equi alen s 29 0.53%/yea HF equi alen s 1 0.02%/yea HF dea h plus equi alen s 15 0.27%/yea CV: ca dio ascula ; HF: hea ailu e; SCD: sudden ca diac dea h. low p opo ion o epo ed amilial HCM, p obably eflec ing a low a e o sys ema ic amily sc eening p og ams and/o a e e al cen e bias in ano he egis y.22 Baseline assessmen O e a decade since he publica ion o ano he na ional egis y,17 he clinical spec um o HCM appea s e y sim- ila , sugges ing ha i s clinical p ofile is no unde going majo changes in he Wes e n wo ld. The majo di e ence is he olde age a diagnosis, wi h mo e han one ou h o pa ien s diagnosed o e he age o 65 yea s. This finding may eflec delayed disease pene ance, lack o sys ema ic amily sc eening, and --- po en ially --- an inc eased diagnos- ic yield in olde pa ien s.1,2 By con as , he associa ion ound in ou coho o a low a e o amilial HCM, la e age o p esen a ion, and low isk p ofile, may mo e closely mi - o he eal-wo ld disease scena io, eflec ing he inclusion o hese unselec ed lowe - isk HCM pa ien s in he coho . Recen epo s ha e in ac iden ified a lowe - isk coho o HCM pa ien s, wi h la e onse and lowe a e o amilial disease,23,24 which may explain ou findings. The p opo ion o obs uc i e o ms in ou coho , abou one hi d, basically eflec s pa ien s wi h obs uc ion a es , and is consis en wi h he exis ing li e a u e o es ing obs uc ion.1,2 Acco dingly, due o he low a e o exe cise echoca diog aphy pe o med,25 many pa ien s wi h labile obs uc ion we e p obably no de ec ed and we e classified as non-obs uc i e, which a fi s sigh sugges s a de ia ion om he guidelines. Howe e , as he ecommenda ions1,2 o he use o exe cise echoca diog aphy in non-obs uc i e HCM a es a e ela i ely ecen , some o hese pa ien s, assessed ea lie , ha e no unde gone exe cise echoca - diog aphy and we e diagnosed as non-obs uc i e in his obse a ional s udy. Diagnos ic es s and sudden ca diac dea h isk s a ifica ion a baseline Ou da a show a ela i ely limi ed pene a ion o CMR, despi e he e idence o i s inc emen al alue.1 --- 4 These esul s eflec i s high cos s, limi ed a ailabili y, and ela i ely ecen in oduc ion in clinical p ac ice.1 --- 4 By con as , despi e he ac o s ha limi he dissemina- ion o gene ic es ing1,2 (p ice, lack o co-paymen , low a ailabili y), hal o he pa ien s unde wen gene ic s udy, which in many cases is al eady pa o ou ine p ac ice.26 The p opo ion o es s in which a a ian was ound15,16,27,28 and he ela i e p e alence o he disease-causing genes is mos ly simila o wha has been desc ibed.1,2,15,16,27,28 How- e e , acco ding o he esul s p o ided by he in es iga o s, an unexpec edly high p e alence o pa hogenic/p obably pa hogenic mu a ions15,16,27,28 was ound in he TPM1 and CSRP3 genes.17 These esul s should be in e p e ed wi h cau ion, because hey a e de i ed om CRF aw da a ha we e no cen ally e iewed o co ec ed by he PRo-HCM coo dina o s. Bo h o he con empo a y models o SCD isk1,2,20,21 show ha ou coho was, a baseline, a low- isk popula ion o SCD, which pa ially explains he low a e o SCD and o ICD implan a ions. T ea men In asi e sep al educ ion was o e ed o almos one ou h o obs uc i e pa ien s, including hose who we e mildly 8 N. Ca dim e al. Cause Cause CV CV HF HF SCD SCD S oke S oke Haza d unc ion Haza d unc ion 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 0.00 0.00 0 05 510 10 15 15 20 20 Follow-up (yea s) Follow-up (yea s) Cumula i e haza d Cumula i e haza d HF+Equi SCD+Equi Figu e 3 Kaplan-Meie es ima es o he cumula i e haza d unc ion o mo ali y du ing ollow-up. Le : cumula i e haza d unc ion o mo ali y; igh : cumula i e haza d unc ion o mo ali y, including sudden ca diac dea h and hea ailu e equi alen s. See ex o explana ion. CV: ca dio ascula mo ali y; HF: hea ailu e mo ali y; HF+Equi : hea ailu e mo ali y+ equi alen s; S oke: s oke ela ed mo ali y; SCD: sudden ca diac dea h mo ali y; SCD+Equi : sudden ca diac dea h mo ali y + equi alen s. symp oma ic. Al hough i canno be excluded ha his a e is biased by he low numbe o pa ien s de ec ed wi h labile obs uc ion, i p obably also esul s om knowledge o he ad e se long- e m e ec s o obs uc ion, as well as om he sa e y o in asi e p ocedu es, which may impac u u e HCM guidelines. O no e, he numbe o su gical myec omies was much highe han he numbe o ASA p ocedu es, which is pa ially explained by he la e in oduc ion o he la e in Po ugal (2009).29 The ac ha he wo p ocedu es we e pe o med in di e en cen e s dese es eflec ion, aking in o accoun he known e ec o expe ise on esul s.1,2 Finally, ewe han 15% o pa ien s ecei ed an ICD du ing ollow-up, eflec ing he low isk p ofile o ou non-selec ed popula ion. Follow-up, mo bidi y and mo ali y O e all, ou da a sugges ha in Po ugal, in he e a o be e diagnos ic and he apeu ic echniques, HCM has low mo ali y bu high mo bidi y. Addi ionally, despi e g ea e use o diagnos ic es s and di e ences in medical ea men , ou comes o high- olume cen e s a e simila o hose o low- olume cen e s, calling in o ques ion he alue o HCM cen e s and o he ‘hub and spoke’ model.7 Ou come da a show ha he SCD a e in HCM pa ien s in Po ugal is e y low. E en hough his finding may be pa ially explained by li es sa ed by success ul esusci a ion and ICD implan a ion, he incidence o SCD is s ill low a e including hese SCD equi alen s in he SCD a e. As a consequence o he e ficacy o hese p e en i e measu es, HF has become he leading cause o dea h in HCM pa ien s in Po ugal. Ou figu es a e in o e all ag eemen wi h hose om o he g oups,30 showing ha o e all mo ali y in ea ed HCM in Po ugal is 1.19%, simila o ha o he gene al Po uguese popula ion (a ound 1.1% yea ).31 Impo an ly, a ollow-up mos pa ien s we e symp oma ic, confi ming ha disease mo bidi y ep esen s a significan bu den o pa ien s, heal h ca e se ices and p o ide s. Acco dingly, he ‘‘con empo a y ea able disease’’30 has became, a leas in Po ugal, a ‘‘con empo a y ch onic ea able dis- ease’’ in which, side by side wi h ICDs, he ole o ch onic medical ea men is inc easing. Limi a ions Despi e hei inhe en limi a ions, egis ies p o ide ealis- ic geog aphical da a on disease cou se and managemen . The inclusion o mos ly symp oma ic pa ien s wi h ad anced, es ablished disease (mainly included by HCM e e al cen e s) is a limi a ion o his egis y, p o iding a biased iew o he disease (selec ion bias, a common lim- i a ion o many HCM s udies). Addi ionally, disease- ela ed mo ali y is unde es i- ma ed, as pa ien s who died be o e diagnosis we e no included. This su i al bias pa ially explains he low a e o e en s, especially he low a e o SCD. Child en we e excluded because o impo an clinical di e ences.1,2 The Po uguese Regis y o Hype ophic Ca diomyopa hy 9 Fu u e di ec ions The iden ifica ion, a a na ional le el, o disc epancies be ween ou da a and he guidelines is an impo an finding, wa an ing a na ional e o o co ec hem ( o ins ance o include exe cise echoca diog aphy as a s anda d ini ial assessmen o non-obs uc i e HCM a es , o be e de ec labile obs uc ion). Because o he la ge olume o da a, we we e unable o co e some impo an opics in dep h. Acco d- ingly, u he wo k will be di ec ed a compa isons be ween subg oups, add essing amily sc eening, gene ic es ing (including ounde e ec s, di e ences in pheno- ype be ween genes, and analysis o specific mu a ions conside ed as pa hogenic/p obably pa hogenic by he in es iga o s), awa eness o phenocopies ( o ins ance Fab y disease), and de ailed assessmen o clinical HCM p ofiles. Conclusions The PRo-HCM egis y p o ides comp ehensi e da a on he managemen o HCM in Po ugal in he e a o gene ics, CMR, ICDs and ASA, and indica es he need o be e access o esou ces and some de ia ions om guidelines. Con empo a y HCM in Po ugal is cha ac e ized by el- a i ely ad anced age a diagnosis, and a high p opo ion o in asi e ea men o obs uc i e o ms a es . Long- e m mo ali y is low, and HF is he mos common cause o dea h ollowed by SCD (excluding equi alen s). Howe e , mo bidi y emains conside able, emphasizing he need o disease-specific ea men s ha impac he na u al his o y o he disease. Funding (un es ic ed g an s o he Po uguese Socie y o Ca diology o all myoca dial and pe ica dial disease egis ies) Gold: Jaba Reco da i, Me ck Se ono, Sanofi-Genzyme, Shi e; Sil e : Medin a , Se ie IOi was suppo ed by he I alian Minis y o Heal h (‘‘LVH in ao ic al e disease and HCM: gene ic basis, biophysical co ela es and i al he apy models’’ (RF-2013-02356787), and NET-2011-02347173 (‘‘Mechanisms and ea men o co ona y mic o ascula dys unc ion in pa ien s wi h gene ic o seconda y LVH’’); and by Tele hon I aly (GGP13162). Conflic s o in e es The au ho s ha e no conflic s o in e es o decla e. Acknowledgmen s We a e g a e ul o CNCDC s a , especially D . Sand a Co ke , and o In o ucano s a . Appendix A. Pa icipa ing cen e s and p incipal in es iga o s Cen o Hospi ala de Lei ia: Joana Co eia; Cen o Hospi a- la de Lisboa No e - Hospi al de San a Ma ia: Dulce B i o; Cen o Hospi ala de Lisboa Ociden al, Se ic¸o de Ca diolo- gia: João Abecasis; Cen o Hospi ala de Lisboa Ociden al - Hospi al São F ancisco Xa ie - Se ic¸o de Medicina III: Cândida Fonseca; Cen o Hospi ala de T ás os Mon es e Al o Dou o - Hospi al São Ped o: Ca la Alexand a R. A aújo; Cen o Hospi ala de Vila No a de Gaia/Espinho: Conceic¸ão Fonseca; Cen o Hospi ala do Alga e - Hospi al de Fa o: Nuno Ma ques; Cen o Hospi ala do Al o A e - Hospi al da Senho a da Oli ei a: Olga Aze edo; Cen o Hospi ala do Baixo Vouga - Hospi al In an e D. Ped o: José An ónio Nob e dos San os; Cen o Hospi ala do Oes e No e - Cen o Hos- pi ala das Caldas da Rainha: Ana Filipa Pe ei a Rod igues; Cen o Hospi ala do Po o - Hospi al de San o An ónio: Pa í- cia Fe nandes Rod igues; Cen o Hospi ala do Tâmega e Sousa - Unidade Pad e Amé ico: Ma ia Conceic¸ão Quei ós; Cen o Hospi ala e Uni e si á io de Coimb a - Ca diologia B - Hospi al Ge al: Joana Delgado Sil a; Cen o Hospi ala Tondela Viseu - Hospi al de São Teo ónio: Ca los Emanuel Co eia; CUF In an e San o Hospi al: Ped o Ma os; Hospi al Bea iz Ângelo: Luís Sa gen o; Hospi al da Luz Lisboa: Nuno Ca dim; Hospi al das Fo c¸as A madas: Sa a Fe ei a; Hospi- al de B aga: Nuno Salomé: Hospi al de San a Ma ia Maio de Ba celos - Se ic¸o Ca diologia: Alexand a Sousa; Hospi al de San o Espí i o de Ang a do He oísmo: Ru e Cou o; Hospi al de São João: Elisabe e Ma ins; Hospi al do Espí i o San o: Agos inho Caei o; Hospi al Ga cia de O a: Luís Rocha Lopes; Hospi al P o . Dou o Fe nando Fonseca: F ancisco Madei a; Hospi al SAMS: Be a Ca ola; HPP Hospi al de Cascais - Hos- pi al D . José de Almeida: Gonc¸alo P oenc¸a; Unidade Local de Saúde da Gua da - Hospi al Sousa Ma ins: Ma ia C is ina Gamboa. Appendix B. Supplemen a y ma e ial Supplemen a y ma e ial associa ed wi h his a icle can be ound in he online e sion a doi:10.1016/j. epc. 2017.08.005. Re e ences 1. Ellio PM, Anas asakis A, Bo ge MA, e al. 2014 ESC Guidelines on diagnosis and managemen o hype ophic ca diomyopa hy. The Task Fo ce o he Diagnosis and Managemen o Hype - ophic Ca diomyopa hy o he Eu opean Socie y o Ca diology. Eu Hea J. 2014;35:2733---79. 2. Ge sh BJ, Ma on BJ, Bonow RO, e al. 2011 ACCF/AHA Guideline o he Diagnosis and T ea men o Hype ophic Ca diomyopa- hy. J Am Coll Ca diol. 2011;58:e212---60. 3. Nagueh SF, Bie ig SM, Budo MJ, e al. Ame ican Socie y o Echoca diog aphy Clinical Recommenda ions o mul imodali y ca dio ascula imaging o pa ien s wi h hype ophic ca diomy- opa hy. J Am Soc Echoca diog . 2011;24:473---98. 4. Ca dim N, Galde isi M, Ed a dsen T, e al. Role o mul imodali y ca diac imaging in he managemen o pa ien s wi h hype - ophic ca diomyopa hy: an expe consensus o he Eu opean Associa ion o Ca dio ascula Imaging. Eu Hea J Ca dio asc Imaging. 2015;16:280.