Abstract
Spondyloarthritis (SpA) has been less well studied than rheumatoid arthritis in North Africa, due to a belief that it is rare and benign in certain populations. The main genetic trait of SpA is its association with human leukocyte antigen (HLA)-B27. The distribution of this allele largely explains the prevalence and severity of SpA. The prevalence of HLA-B27 in the general population of North Africa is estimated at about 4%, and rises to about 60% among people affected with SpA. Coxitis is one of the main features of North African SpA, but the response to treatment is comparable to the literature from the West. The major challenge in North Africa remains accessibility to specialized care and means of early diagnosis. Prevalent infections in North Africa do not seem to be a major obstacle to optimal treatment strategies.
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References
Pernod J, Bruneaux J (1960) Bull Mem Soc Med Hop Paris 76:351–356
Feldtkeller E, Lemmel EM, Russell AS (2003) Ankylosing spondylitis in the pharaohs of ancient Egypt. Rheumatol Int 23(1):1–5. https://doi.org/10.1007/s00296-002-0242-7
Braun J, Sieper J (2007) Ankylosing spondylitis. Lancet 369:1379–1390
Tayel MY, Soliman E, El Baz WF, El Labaan A, Hamaad Y, Ahmed MH (2012) Registry of the clinical characteristics of spondyloarthritis in a cohort of Egyptian population. Rheumatol Int 32(9):2837–2842. https://doi.org/10.1007/s00296-011-2068-7
Sakly N, Boumiza R, Zrour-Hassen S, Hamzaoui A, Ben Yahia S, Amara H, Khairallah M, Mahjoub S, Bergaoui N, Ghedira I (2009) HLA-B27 and HLA-B51 Determination in Tunisian healthy subjects and patients with suspected ankylosing spondylitis and Behcet’s disease Ann. N.Y. Acad Sci 1173:564–569. https://doi.org/10.1111/j.1749-6632.2009.04756.x
Mahfoudh N, Siala M, Rihl M, Kammoun A, Frikha F, Younes M, Gdoura R, Gaddour L, Hakim F, Bahloul Z, Baklouti S, Bargaoui N, Sellami S, Hammami A, Makni H (2011) Association and frequency of HLA-A, B and HLA-DR genes in south Tunisian patients with spondyloarthritis (SpA). Clin Rheumatol 30:1069–1073. https://doi.org/10.1007/s10067-011-1705-6
Ben Radhia K, Ayed-Jendoubi S, Sfar I, Ben Romdhane T, Makhlouf M, Gorgi Y, Ayed K (2008) Distribution of HLA-B*27 subtypes in Tunisians and their association with ankylosing spondylitis. Joint Bone Spine 75:172–175. https://doi.org/10.1016/j.jbspin.2007.05.020
Siala M, Mahfoudh N, Gdoura R, Younes M, Fourati H, Kammoun A, Cheour I, Meddeb N, Gaddour L, Hakim F, Baklouti S, Bargaoui N, Sellami S, Hammami A, Makni H (2009) Distribution of HLA-B27 and its alleles in patients with reactive arthritis and with ankylosing spondylitis in Tunisia. Rheumatol Int 29:1193–1196. https://doi.org/10.1007/s00296-009-0840-8
Dahmani CA, Benzaoui A, Amroun H, Mecabih F, Sediki FZ, Zemani-Fodil F, Fodil M, Boughrara W, Mecheti B, Attal N, Mehtar N, Petit-Teixeira E, Boudjema A (2018) Association of the HLA-B27 antigen and the CTLA4 Gene CT60/rs3087243 polymorphism with ankylosing spondylitis in algerian population: a case-control study. Int J Immunogenet 45(3):109–117
Amroun H, Djoudi H, Busson M, Allat R, El Sherbini SM, Sloma I et al (2005) Early onset ankylosing spondylitis is associated with a functional MICA polymorphism. Hum Immunol 66:1057–1061
Kchir MM, Hamdi W, Laadhar L, Kochbati S, Kaffel D, Saadellaoui K, Lahmar H, Ghannouchi MM, Azzouz D, Daoud L, Ben Hamida A, Zouari B, Zitouni M, Makni S (2010) HLA-B, DR and DQ antigens polymorphism in Tunisian patients with ankylosing spondylitis (a case–control study). Rheumatol Int 30:933–939. https://doi.org/10.1007/s00296-009-1079-0
El Mouraghi I, Ouarour A, Ghozlani I, Collantes E, Solana R, El Maghraoui A (2015) Polymorphisms of HLA-A, -B, -Cw and DRB1 antigens in Moroccan patients with ankylosing spondylitis and a comparison of clinical features with frequencies of HLA-B*27. Tissue Antigens 85:108–116
Akassou A, Yacoubi H, Jamil A, Dakka N, Amzazi S, Sadki K, Niamane R, Elhassani S, Bakri Y (2015) Prevalence of HLA-B27 in Moroccan healthy subjects and patients with ankylosing spondylitis and mapping construction of several factors influencing AS diagnosis by using multiple correspondence analysis. Rheumatol Int 35(11):1889–1894
Bohn R, Cooney M, Deodhar A, Curtis JR, Golembesky A (2018) Incidence and prevalence of axial spondyloarthritis: methodologic challenges and gaps in the literature. Clin Exp Rheumatol 36:263–274
Akassou A, Bakri Y (2018) Does HLA-B27 Status influence ankylosing spondylitis phenotype? Clin Med Insights Arthritis Musculoskelet Disord 8(11):1179544117751627. https://doi.org/10.1177/1179544117751627
Shirazy K, Hajjaj-Hassouni N, Hammond C, Jones H, Ladjouze Rezig A, Pedersen R, Vlahos B (2018) The prevalence of non-radiographic axial spondyloarthritis among patients with inflammatory back pain from Northwest and South Africa: data from a noninterventional, cross-sectional study. Rheumatol Ther 5:437–445
Ziadé N (2017) HLA B27 antigen in Middle Eastern and Arab countries: systematic review of the strength of association with axial spondyloarthritis and methodological gaps. BMC Musculoskelet Disord 18:280. https://doi.org/10.1186/s12891-017-1639-5
Chung HY, Machado P, van der Heijde D, D'Agostino MA, Dougados M (2011) HLA-B27 positive patients differ from HLA-B27 negative patients in clinical presentation and imaging: results from the DESIR cohort of patients with recent onset axial spondyloarthritis. Ann Rheum Dis 70(11):1930–1936. https://doi.org/10.1136/ard.2011.152975
Hamdi W, Kaffel D, Ghannouchi MM, Laadhar L, Makni S, Kchir MM (2012) Clinical, radiographic and biologic particularities of ankylosing spondylitis in Tunisian patients according to the presence or the absence of the HLA B27 and its sub-types. Rev Med Liege 67(7-8):430–436
Claudepierre P, Gueguen A, Ladjouze A, Hajjaj-Hassouni N, Sellami S, Amor B, Dougados M (1995) Predictive factors of severity of spondyloarthropathy in North Africa. Br J Rheumatol 34(12):1139–1145. https://doi.org/10.1093/rheumatology/34.12.1139
Khan MA (2017) An update on the genetic polymorphism of HLA-B*27 with 213 alleles encompassing 160 subtypes (and still counting). Curr Rheumatol Rep 19:9. https://doi.org/10.1007/s11926-017-0640-1
Allele search Tool. https://www.ebi.ac.uk/cgi-bin/ipd/imgt/hla/allele.cgi. Accessed 02 December 2020
Varnavidou-Nicolaidou A, Karpasitou K, Georgiou D et al (2004) HLA B27 in the Greek Cypriot population distribution of subtypes in patients with ankylosing spondylitis and other HLA B27 related diseases. The possible protective rôle of B*2707. Hum Immunol 65:1451–1454. https://doi.org/10.1016/j.humimm.2004.08.177
Scordaki Z, Spyropoulou-Vlachou M, Vrani V et al (2003) Polymorphism of HLA-B27 alleles in association with HLA-B27 related diseases in Greek population. Hum Immunol 1:S144#195
Khan MA (1997) Prevalence of HLA B27 in world populations. In: Lopez-Larrea C (ed) HLA B27 in the development of spondyloarthropathies. Landes Spinger, Austin, pp 1–16
Tamouza R, Awada H, Marzais F (1997) HLA B27 in the Lebanese population: subtypes analysis and association with ankylosing spondylitis. In: Charron D et al (eds) Genetic diversity of HLA: functional and medical implications. EDK, Paris, p 649
Gonzalez-Roces S, Brautbar C, Pena M et al (1994) Molecular analysis of HLA B27 haplotypes in Caucasoids. frequencies of B27-Cw in Jewish and Spanish populations. Hum Immunol 41:127–134. https://doi.org/10.1016/0198-8859(94)90005-1
Oguz FS, Ocal L, Diler AS et al (2004) HLAB27 subtypes in Turkish patients with spondyloarthropathy and healthy controls. Dis Markers 20:309–312
Marsh SGE, Albert ED, Bodmer WF et al (2005) WHO nomenclature committee for nomenclature factors of the HLA system 2004. Tissue Antigens 65:301. https://doi.org/10.1111/j.1399-0039.2005.00379.x
Fernandez-Sueiro JL, Alonso C, Blanco FJ et al (2004) Prevalence of HLA B27 and subtypes of HLAB27 associated with ankylosing spondylitis in Galicia, Spain. Clin Exp Rheumatol 122:465–468
Grublic Z, Kerhin-Brkljacic V, Peric P et al (2001) Variation in HLA B27 gene subtypes and susceptibility of ankylosing spondylitis in the Croatian population. Reumatizam 48:7–11
Fraile A, Martin J, Lopez-Nevot MA et al (1998) HLA B27 subtyping by PCR RFLP in Spanish patients with ankylosing spondylitis. Tissue Antigens 52:492–496
Wu Z, Lin Z, Wei Q, Gu J (2009) Clinical features of ankylosing spondylitis may correlate with HLA-B27 polymorphism. Rheumatol Int 29:389–392
Fallahi S, Mahmoudi M, Nicknam MH et al (2013) Effect of HLA-B*27 and its subtypes on clinical manifestations and severity of ankylosing spondylitis in Iranian patients. Iran J Allergy Asthma Immunol 12:321–330
Mou Y, Zhang P, Li Q et al (2015) Clinical features in juvenile-onset ankylosing spondylitis patients carrying different B27 subtypes. Biomed Res Int 2015:594878
Qi J, Li Q, Lin Z et al (2013) Higher risk of uveitis and dactylitis and older age of onset among ankylosing spondylitis patients with HLA-B*2705 than patients with HLA-B*2704 in the Chinese population. Tissue Antigens 82:380–386
Chavan H, Samant R, Deshpande A, Mankeshwar R (2011) Correlation of HLA B27 subtypes with clinical features of ankylosing spondylitis. Int J Rheum Dis 14:369–374
Mou Y, Wu Z, Gu J et al (2010) HLA-B27 polymorphism in patients with juvenile and adult-onset ankylosing spondylitis in Southern China. Tissue Antigens 75:56–60
Lee SH, Choi IA, Lee YA et al (2008) Human leukocyte antigen-B*2705 is the predominant subtype in the Korean population with ankylosing spondylitis, unlike in other Asians. Rheumatol Int 29:43–46
Khan MA (1983) B7-CREG and ankylosing spondylitis. Br J Rheumatol 22(4 Suppl 2):129–133
Van Gaalen FA, Verduijn W, Roelen DL, Böhringer S, Huizinga TWJ, van der Heijde D, Toes RE (2013) Epistasis between two HLA antigens defines a subset of individuals at a very high risk for ankylosing spondylitis. Ann Rheum Dis 72:974–978. https://doi.org/10.1136/annrheumdis-2012-201774
Wei JC, Sung-Ching HW, Hsu YW, Wen YF, Wang WC, Wong RH, Lu HF, van Gaalen F, Chang WCH (2015) Interaction between HLA-B60 and HLA-B27 as a better predictor of ankylosing spondylitis in a Taiwanese population. PLoS One 10:e0137189
Cortes A, Pulit SL, Leo PJ, Pointon JJ, Robinson PC, Weisman MH (2015) Major histocompatibility complex associations of ankylosing spondylitis are complex and involve further epistasis with ERAP1. Nat Commun 21(6):7146. https://doi.org/10.1038/ncomms8146
Reveille JD, Zhou X, Lee M, Michael H, Weisman MH, Yi L, Lianne S, Gensler LS, Zou H (2019) HLA class I and II alleles in susceptibility to ankylosing spondylitis. Ann Rheum Dis 78(1):66–73. https://doi.org/10.1136/annrheumdis-2018-213779
Huang XF, Li Z, De Guzman E, Robinson P, Gensler L, Ward MM et al (2020) Genomewide association study of acute anterior uveitis identifies new susceptibility loci. Invest Ophthalmol Vis Sci 61(6):3. https://doi.org/10.1167/iovs.61.6.3
Payami H, Joe S, Farid NR, Stenszky V, Chan SH, Yeo PP, Cheah JS, Thomson G (1989) Relative predispositional effects (RPEs) of marker alleles with disease: HLA-DR alleles and Graves disease. Am J Hum Genet 45(4):541–546
Díaz-Peña R, Vidal-Castiñeira JR, López-Vázquez A, López-Larrea C (2016) HLA-B*40:01 Is Associated with ankylosing spondylitis in HLA-B27-positive populations. J Rheumatol 43(6):1255–1256. https://doi.org/10.3899/jrheum.151096
Saadi A, Dang J, Shan S, Ladjouze-Rezig A, Lefkir-Tafiani S, Gong Y, Liu Q, Benhassine T (2019) Ankylosing spondylitis: analysis of gene-gene interactions between IL-12β, JAK2, and STAT3 in Han Chinese and Algerian cohorts. Centr Eur J Immunol 44(1):65–74
Khan MA, Kushner I, Braun WE, Zachary AA, Steinberg AG (1978) HLA-B27 homozygosity in ankylosing spondylitis: relationship to risk and severity. Tissue Antigens 11:434–438
Wang LI, Yang X, Cai G, Xin L, Xia Q, Zhang XU, Li X, Wang M, Wang K, Xia G, Xu S, Xu J, Zou Y, Pan F (2016) Association study of copy number variants in FCGR3A and FCGR3B gene with risk of ankylosing spondylitis in a Chinese population. Rheumatol Int 36(3):437–442. https://doi.org/10.1007/s00296-015-3384-0
Chen JY, Wang CM, Chang SW, Cheng CH, Wu YJ, Lin JC, Yang B, Ho HH, Wu J (2014) Association of FCGR3A and FCGR3B copy number variations with systemic lupus erythematosus and rheumatoid arthritis in Taiwanese patients. Arthritis Rheum 66(11):3113–3121. https://doi.org/10.1002/art.38813
Willcocks LC, Lyons PA, Clatworthy MR, Robinson JI, Yang W, Newland SA, Smith KG (2008) Copy number of FCGR3B, which is associated with systemic lupus erythematosus, correlates with protein expression and immune complex uptake. J Exp Med 205(7):1573–1582. https://doi.org/10.1084/jem.20072413
Graf SW, Lester S, Nossent JC, Hill CL, Proudman SM, Lee A, Rischmueller M (2012) Low copy number of the FCGR3B gene and rheumatoid arthritis: a case-control study and meta-analysis. Arthritis Res Ther 14(1):R28
McKinney C, Fanciulli M, Merriman ME, Phipps-Green A, Alizadeh BZ, Koeleman BP, Merriman TR (2010) Association of variation in Fcgamma receptor 3B gene copy number with rheumatoid arthritis in Caucasian samples. Ann Rheum Dis 69(9):1711–1716. https://doi.org/10.1136/ard.2009.123588
Wu J, Li Y, Guan W, Viken K, Perlman DM, Bhargava M (2016) FCGR3A and FCGR3B copy number variations are risk factors for sarcoidosis. Hum Genet 135(7):715–725. https://doi.org/10.1007/s00439-016-1669-3
Dahmani CA, Benzaoui A, Amroun H, Zemani-Fodil F, Petit-Teixeira E, Boudjema A (2019) Association study of copy number variants in CCL3L1, FCGR3A and FCGR3B genes with risk of ankylosing spondylitis in a West Algerian population. Int J Immunogenet 00:1–7. https://doi.org/10.1111/iji.12454
Dahmani CA, Benzaoui A, Amroun H, Mecabih F, Sediki FZ, Zemani-Fodil F, Fodil M, Boughrara W, Mecheti B, Attal N, Mehtar N, Petit- Teixeira E, Boudjema A (2018) Association of the HLA-B27antigen and the CTLA4 gene CT60/rs3087243 polymorphism with ankylosing spondylitis in Algerian population: A case–control study. Int J Immunogenet 45(3):109–117. https://doi.org/10.1111/iji.12369
Ellinghaus D, Jostins L, Spain SL, Cortes A, Bethune J, Han B, Park UR (2016) Analysis of five chronic inflammatory diseases identifies 27 new associations and highlights disease-specific patterns at shared loci. Nat Genet 48(5):510–518. https://doi.org/10.1038/ng.3528
Hammoudeh M, Abdulaziz S, Alosaimi H, Al-Rayes H, Aldeen Sarakbi H, Baamer M et al (2016) Challenges of diagnosis and management of axial spondyloarthritis in North Africa and the Middle East: an expert consensus. J Int Med Res 44(2):216–230
Allat R (2015) Particularités des spondyloarthrites algériennes. Rev Rhum 82S:A363
Haid S, Rahal S, Teniou A, Gasmi A, Megateli I, Abdessemed A et al (2015) Les Coxites dans la spondyloarthrite. Rev Rhum 82S:A358
Maghraoui AE, Bensabbah R, Bahiri R, Bezza A, Guedira N, Hajjaj-Hassouni N (2003) Cervical spine involvement in ankylosing spondylitis. Clin Rheumatol 22(2):94–98
Ibn Yacoub Y, Amine B, Laatiris A, Abouqal R, Hajjaj-Hassouni N (2011) Spinal mobility and its impact in Moroccan patients with ankylosing spondylitis. Clin Rheumatol 30(2):239–243
Bezza A, Niamane R, Amine B, El Maghraoui A, Bensabbah R, Hajjaj-Hassouni N (2004) Involvement of the foot in patients with psoriatic arthritis. A review of 26 cases. Joint Bone Spine 71(6):546–549
Sahli H, Bachali A, Tekaya R, Mahmoud I, Sedki Y, Saidane O et al (2019) Involvement of foot in patients with spondyloarthritis: prevalence and clinical features. Foot Ankle Surg 25(2):226–230
Laatiris A, Amine B, Ibn Yacoub Y, Hajjaj-Hassouni N (2012) Enthesitis and its relationships with disease parameters in Moroccan patients with ankylosing spondylitis. Rheumatol Int 32(3):723–727
Moltó A, Etcheto A, van der Heijde D, Landewé R, van den Bosch F, Bautista Molano W et al (2016) Prevalence of comorbidities and evaluation of their screening in spondyloarthritis: results of the international cross-sectional ASAS-COMOSPA study. Ann Rheum Dis 75(6):1016–1023
Ghozlani I, Ghazi M, Nouijai A, Mounach A, Rezqi A, Achemlal L et al (2009) Prevalence and risk factors of osteoporosis and vertebral fractures in patients with ankylosing spondylitis. Bone 44(5):772–776
El Maghraoui A, Ebo’o FB, Sadni S, Majjad A, Hamza T, Mounach A (2016) Is there a relation between pre-sarcopenia, sarcopenia, cachexia and osteoporosis in patients with ankylosing spondylitis? BMC Musculoskelet Disord 17(1):268
El Maghraoui A (2005) Pleuropulmonary involvement in ankylosing spondylitis. Joint Bone Spine 72(6):496–502
Hakkou J, Rostom S, Aissaoui N, Berrada KR, Abouqal R, Bahiri R et al (2011) Psychological status in Moroccan patients with ankylosing spondylitis and its relationships with disease parameters and quality of life. J Clin Rheumatol 17(8):424–428
Aissaoui N, Rostom S, Hakkou J, Berrada Ghziouel K, Bahiri R, Abouqal R et al (2012) Fatigue in patients with ankylosing spondylitis: prevalence and relationships with disease-specific variables, psychological status, and sleep disturbance. Rheumatol Int 32(7):2117–2124
Ibn Yacoub Y, Amine B, Laatiris A, Abouqal R, Hajjaj-Hassouni N (2011) Health-related quality of life in Moroccan patients with ankylosing spondylitis. Clin Rheumatol 30(5):673–677
Ben Tekaya A, Mahmoud I, Hamdı I, Hechmı S, Saıdane O, Tekaya R, Abdelmoula L (2019) Depression and anxiety in spondyloarthritis: prevalence and relationship with clinical parameters and self-reported outcome measures. Turk Psikiyatri Derg 30(2):90–98
Burgos-Varga R, Wei JC, Rahman MU, Akkoc N, Atiqul Haq S, Hammoudeh M, Mahgoub E, Singh E, Llamado LJ, Shirazy K, Kotak S, Hammond S, Pedersen R, Shen Q, Vlahos B (2016) The prevalence and clinical characteristics of nonradiographic axial spondyloarthritis among patients with inflammatory back pain in rheumatology practices: a multinational, multicenter study. Arthritis Res Ther 18(1):132. https://doi.org/10.1186/s13075-016-1027-9
Hamdi W, Chelli-Bouaziz M, Ahmed MS, Ghannouchi MM, Kaffel D, Ladeb MF, Kchir MM (2011) Correlations among clinical, radiographic, and sonographic scores for enthesitis in ankylosing spondylitis. Joint Bone Spine 78(3):270–274. https://doi.org/10.1016/j.jbspin.2010.09.010
Hamdi W, Bouaziz Chelli M, Ghannouchi MM, Hawel M, Ladeb MF, Kchir MM (2013) Performance of ultrasounds compared with radiographs to detect chronic enthesitis signs in patients with ankylosing spondylitis. Rheumatol Int 33(2):497–499. https://doi.org/10.1007/s00296-011-2174-6
Ali Ou Alla S, Bahiri R, Amine H, El Alaoui H, Rkain H, Aktaou S, Abouqal R, Hajjaj-Hassouni N (2013) Ultrasound features of shoulder involvement in patients with ankylosing spondylitis: a case– control study. BMC Musculoskelet Disord 14:272
Goei The HS, Steven MM, Van Der Linden SM, Cats A (1985) Evaluation of diagnostic criteria for ankylosing spondylitis: a comparison of the rome, new york and modified new york criteria in patients with a positive clinical history screening test for ankylosing. Rheumatology 24(3):242–249
Ibn Yacoub Y, Amine B, Laatiris A, Bensabbah R, Hajjaj-Hassouni N (2012) Relationship between diagnosis delay and disease features in Moroccan patients with ankylosing spondylitis. Rheumatol Int 32(2):357–360
Wariaghli G, Allali F, Berrada K, Idrissi Z, Hmamouchi I, Abouqal R et al (2012) Normative values for the bath ankylosing spondylitis functional index in the general population compared with ankylosing spondylitis patients in Morocco. BMC Musculoskelet Disord 13(1):40
Hakkou J, Rostom S, Aissaoui N, Berrada Ghezioul K, Bahiri R, Abouqal R et al (2012) Comparison of the BASDAI and the miniBASDAI in assessing disease activity in patients with ankylosing spondylitis. Clin Rheumatol 31(3):441–445
van der Heijde D, Ramiro S, Landewé R, Baraliakos X, Van den Bosch F, Sepriano A et al (2017) 2016 update of the ASAS-EULAR mana- gement recommendations for axial spondyloarthritis. Ann Rheum Dis 76:978–991
van der Heijde D, Kivitz A, Schiff MH (2006) Efficacy and safety of adalimumab in patients with ankylosing spondylitis: results of a multicenter, randomized, double-blind, placebo-controlled trial. Arthritis Rheum 54:2136–2146
Sieper J, Listing J, Poddubnyy D (2016) Effect of continuous versus on- demand treatment of ankylosing spondylitis with diclofenac over 2 years on radiographic progression of the spine: results from a randomi- sed multicentre trial (ENRADAS). Ann Rheum Dis 75:1438–1443
Younes M, Jalled A, Aydi Z et al (2010) Socioeconomic impact of ankylosing spondylitis in Tunisia. Joint Bone Spine 77(1):41–46
Djebbari A, Bouakkaz S, Bennedjema S et al (2018) Hip arthritis remain free from radiographic progression for 24 months following treatment of ankylosing spondyloarthritis with tnf-Α inhibitors: a prospective study. Ann Rheum Dis 77(supplement Suppl):A1542. https://doi.org/10.1136/annrheumdis-2018-eular.2971
Haid S, Teniou D, Megateli I et al (2015) Anti-TNF et spondyloarthrite : quel risque infectieux ? Rev Rhum 82S:A357
Bahiri R, Ichchou L, Bezza A et al (2017) Recommandations de la société marocaine de rhumatologie (SMR) pour la prise en charge thérapeutique des malades atteints de spondylarthrite ankylosante (SpA grave). Rev Mar Rhum 39:3–18
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Slimani, S., Hamdi, W., Nassar, K. et al. Spondyloarthritis in North Africa: an update. Clin Rheumatol 40, 3401–3410 (2021). https://doi.org/10.1007/s10067-021-05630-w
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DOI: https://doi.org/10.1007/s10067-021-05630-w