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Stanescu-Siegmund N, Brunner H, Schmidt SA. [In Process Citation]. ROFO-FORTSCHR RONTG 2016; 188:497-8. [PMID: 27074428 DOI: 10.1055/s-0041-111847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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White J, Mazzeu J, Hoischen A, Bayram Y, Withers M, Gezdirici A, Kimonis V, Steehouwer M, Jhangiani S, Muzny D, Gibbs R, van Bon B, Sutton V, Lupski J, Brunner H, Carvalho C, Carvalho CMB. DVL3 Alleles Resulting in a -1 Frameshift of the Last Exon Mediate Autosomal-Dominant Robinow Syndrome. Am J Hum Genet 2016; 98:553-561. [PMID: 26924530 DOI: 10.1016/j.ajhg.2016.01.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 01/19/2016] [Indexed: 12/22/2022] Open
Abstract
Robinow syndrome is a rare congenital disorder characterized by mesomelic limb shortening, genital hypoplasia, and distinctive facial features. Recent reports have identified, in individuals with dominant Robinow syndrome, a specific type of variant characterized by being uniformly located in the penultimate exon of DVL1 and resulting in a -1 frameshift allele with a premature termination codon that escapes nonsense-mediated decay. Here, we studied a cohort of individuals who had been clinically diagnosed with Robinow syndrome but who had not received a molecular diagnosis from variant studies of DVL1, WNT5A, and ROR2. Because of the uniform location of frameshift variants in DVL1-mediated Robinow syndrome and the functional redundancy of DVL1, DVL2, and DVL3, we elected to pursue direct Sanger sequencing of the penultimate exon of DVL1 and its paralogs DVL2 and DVL3 to search for potential disease-associated variants. Remarkably, targeted sequencing identified five unrelated individuals harboring heterozygous, de novo frameshift variants in DVL3, including two splice acceptor mutations and three 1 bp deletions. Similar to the variants observed in DVL1-mediated Robinow syndrome, all variants in DVL3 result in a -1 frameshift, indicating that these highly specific alterations might be a common cause of dominant Robinow syndrome. Here, we review the current knowledge of these peculiar variant alleles in DVL1- and DVL3-mediated Robinow syndrome and further elucidate the phenotypic features present in subjects with DVL1 and DVL3 frameshift mutations.
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Reijnders M, Zachariadis V, Latour B, Jolly L, Mancini G, Pfundt R, Wu K, van Ravenswaaij-Arts C, Veenstra-Knol H, Anderlid BM, Wood S, Cheung S, Barnicoat A, Probst F, Magoulas P, Brooks A, Malmgren H, Harila-Saari A, Marcelis C, Vreeburg M, Hobson E, Sutton V, Stark Z, Vogt J, Cooper N, Lim J, Price S, Lai A, Domingo D, Reversade B, Gecz J, Gilissen C, Brunner H, Kini U, Roepman R, Nordgren A, Kleefstra T, Kleefstra T. De Novo Loss-of-Function Mutations in USP9X Cause a Female-Specific Recognizable Syndrome with Developmental Delay and Congenital Malformations. Am J Hum Genet 2016; 98:373-81. [PMID: 26833328 DOI: 10.1016/j.ajhg.2015.12.015] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 12/15/2015] [Indexed: 12/24/2022] Open
Abstract
Mutations in more than a hundred genes have been reported to cause X-linked recessive intellectual disability (ID) mainly in males. In contrast, the number of identified X-linked genes in which de novo mutations specifically cause ID in females is limited. Here, we report 17 females with de novo loss-of-function mutations in USP9X, encoding a highly conserved deubiquitinating enzyme. The females in our study have a specific phenotype that includes ID/developmental delay (DD), characteristic facial features, short stature, and distinct congenital malformations comprising choanal atresia, anal abnormalities, post-axial polydactyly, heart defects, hypomastia, cleft palate/bifid uvula, progressive scoliosis, and structural brain abnormalities. Four females from our cohort were identified by targeted genetic testing because their phenotype was suggestive for USP9X mutations. In several females, pigment changes along Blaschko lines and body asymmetry were observed, which is probably related to differential (escape from) X-inactivation between tissues. Expression studies on both mRNA and protein level in affected-female-derived fibroblasts showed significant reduction of USP9X level, confirming the loss-of-function effect of the identified mutations. Given that some features of affected females are also reported in known ciliopathy syndromes, we examined the role of USP9X in the primary cilium and found that endogenous USP9X localizes along the length of the ciliary axoneme, indicating that its loss of function could indeed disrupt cilium-regulated processes. Absence of dysregulated ciliary parameters in affected female-derived fibroblasts, however, points toward spatiotemporal specificity of ciliary USP9X (dys-)function.
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Horneff G, Ruperto N, Brunner H, Quartier P, Constantin T, Alexeeva E, Kone-Paut I, Marzan K, Wulffraat N, Schneider R, Padeh S, Chasnyk V, Wouters C, Deschner JK, Kallinich T, Lauwerys B, Haddad E, Nasonov E, Trachana M, Vougiouka O, Abrams K, Leon K, Lheritier K, Martini A, Lovell D. Long term efficacy and safety of canakinumab in children with systemic juvenile idiopathic arthritis with and without fever. Pediatr Rheumatol Online J 2015. [PMCID: PMC4596972 DOI: 10.1186/1546-0096-13-s1-o83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Ruperto N, Brunner H, Wallace C, Toth M, Foeldvari I, Bohnsack J, Milojevic D, Rabinovich E, Vavrincova P, Kingsbury D, Marzan K, Quartier P, Minden K, Chalom E, Horneff G, Kuester RM, Dare J, Bereswill M, Kupper H, Kalabic J, Martini A, Lovell D. OP0065 Long-Term Safety and Effectiveness of Adalimumab in Children with Moderately to Severely Active Polyarticular or Polyarticular-Course Juvenile Idiopathic Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ruperto N, Brunner H, Quartier P, Constantin T, Alexeeva E, Kone-Paut I, Marzan K, Wulffraat N, Schneider R, Padeh S, Chasnyk V, Wouters C, Kummerle Deschner J, Kallinich T, Lauwerys B, Haddad E, Nasonov E, Trachana M, Vougiouka O, Abrams K, Leon K, Lheritier K, Martini A, Lovell D. FRI0496 Efficacy and Safety of Canakinumab in Children with Systemic Juvenile Idiopathic Arthritis with and Without Fever. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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De Benedetti F, Ruperto N, Brunner H, Grom A, Wulffraat N, Henrickson M, Jerath R, Kimura Y, Kadva A, Keane C, Wang J, Wimalasundera S, Gokani P, Martini A, Lovell D. SAT0483 Tapering and Withdrawal of Tocilizumab in Patients with Systemic Juvenile Idiopathic Arthritis in Inactive Disease: Results from an Alternative Dosing Regimen in the Tender Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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De Benedetti F, Ruperto N, Brunner H, Keane C, Wells C, Wang J, Calvo I, Cuttica R, Ravelli A, Schneider R, Eleftheriou D, Wouters C, Xavier R, Zemel L, Baildam E, Burgos-Vargas R, Dolezalova P, Garay S, Joos R, Grom A, Wulffraat N, Zuber Z, Zulian F, Martini A, Lovell D. THU0508 Safety and Efficacy of Tocilizumab in Patients with Systemic Juvenile Idiopathic Arthritis: 5-Year Data from Tender, A Phase 3 Clinical Trial. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Miyaji T, Hasinger G, Salvato M, Brusa M, Cappelluti N, Civano F, Puccetti S, Elvis M, Brunner H, Fotopoulou S, Ueda Y, Griffiths RE, Koekemoer AM, Akiyama M, Comastri A, Gilli R, Lanzuisi G, Merloni A, Vignali C. DETAILED SHAPE AND EVOLUTIONARY BEHAVIOR OF THE X-RAY LUMINOSITY FUNCTION OF ACTIVE GALACTIC NUCLEI. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/804/2/104] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Schr�der CH, Brunner H, Monnens LAH. Genetic Features of Alport�s Syndrome. CONTRIBUTIONS TO NEPHROLOGY 2015. [DOI: 10.1159/000418621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Bauer H, Brunner H, Spohn B, Franz HE. Altered whole blood chemiluminescence during hemodialysis using different dialysis membranes. CONTRIBUTIONS TO NEPHROLOGY 2015; 37:89-95. [PMID: 6713883 DOI: 10.1159/000408556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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37
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Brunner H. The antihypertensive effect of beta-blockers. CONTRIBUTIONS TO NEPHROLOGY 2015; 8:171-81. [PMID: 19199 DOI: 10.1159/000400627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Brunner H, Schröder C, Monnens L, Veerkamp J, Ropers HH. Alport's syndrome: localization of the X-chromosomal gene and consequences for future investigations. CONTRIBUTIONS TO NEPHROLOGY 2015; 67:200-5. [PMID: 3208529 DOI: 10.1159/000415402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Brunner H, Mann H, Stiller S, Sieberth HG. Permeability for middle and higher molecular weight substances. Comparison between polysulfone and cuprophan dialyzers. CONTRIBUTIONS TO NEPHROLOGY 2015; 46:33-42. [PMID: 4006479 DOI: 10.1159/000410765] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Bauer H, Brunner H, Franz HE, Bültmann B. Leucocyte function tests during hemodialysis with different dialysis membranes. CONTRIBUTIONS TO NEPHROLOGY 2015; 36:9-14. [PMID: 6839778 DOI: 10.1159/000407574] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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41
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Stiller S, Mann H, Brunner H. Backfiltration in hemodialysis with highly permeable membranes. CONTRIBUTIONS TO NEPHROLOGY 2015; 46:23-32. [PMID: 4006478 DOI: 10.1159/000410764] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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42
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Bunn K, Daniel P, Rösken H, O’Neill A, Cameron-Christie S, Morgan T, Brunner H, Lai A, Kunst H, Markie D, Robertson S. Mutations in DVL1 cause an osteosclerotic form of Robinow syndrome. Am J Hum Genet 2015; 96:623-30. [PMID: 25817014 DOI: 10.1016/j.ajhg.2015.02.010] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/13/2015] [Indexed: 12/23/2022] Open
Abstract
Robinow syndrome (RS) is a phenotypically and genetically heterogeneous condition that can be caused by mutations in genes encoding components of the non-canonical Wnt signaling pathway. In contrast, germline mutations that act to increase canonical Wnt signaling lead to distinctive osteosclerotic phenotypes. Here, we identified de novo frameshift mutations in DVL1, a mediator of both canonical and non-canonical Wnt signaling, as the cause of RS-OS, an RS subtype involving osteosclerosis, in three unrelated individuals. The mutations all delete the DVL1 C terminus and replace it, in each instance, with a novel, highly basic sequence. We showed the presence of mutant transcript in fibroblasts from one individual with RS-OS and demonstrated unimpaired protein stability with transfected GFP-tagged constructs bearing a frameshift mutation. In vitro TOPFlash assays, in apparent contradiction to the osteosclerotic phenotype, revealed that the mutant allele was less active than the wild-type allele in the canonical Wnt signaling pathway. However, when the mutant and wild-type alleles were co-expressed, canonical Wnt activity was 2-fold higher than that in the wild-type construct alone. This work establishes that DVL1 mutations cause a specific RS subtype, RS-OS, and that the osteosclerosis associated with this subtype might be the result of an interaction between the wild-type and mutant alleles and thus lead to elevated canonical Wnt signaling.
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White J, Mazzeu J, Hoischen A, Jhangiani S, Gambin T, Alcino M, Penney S, Saraiva J, Hove H, Skovby F, Kayserili H, Estrella E, Vulto-van Silfhout A, Steehouwer M, Muzny D, Sutton V, Gibbs R, Lupski J, Brunner H, van Bon B, Carvalho C, Carvalho CMB. DVL1 frameshift mutations clustering in the penultimate exon cause autosomal-dominant Robinow syndrome. Am J Hum Genet 2015; 96:612-22. [PMID: 25817016 DOI: 10.1016/j.ajhg.2015.02.015] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 02/24/2015] [Indexed: 12/17/2022] Open
Abstract
Robinow syndrome is a genetically heterogeneous disorder characterized by mesomelic limb shortening, genital hypoplasia, and distinctive facial features and for which both autosomal-recessive and autosomal-dominant inheritance patterns have been described. Causative variants in the non-canonical signaling gene WNT5A underlie a subset of autosomal-dominant Robinow syndrome (DRS) cases, but most individuals with DRS remain without a molecular diagnosis. We performed whole-exome sequencing in four unrelated DRS-affected individuals without coding mutations in WNT5A and found heterozygous DVL1 exon 14 mutations in three of them. Targeted Sanger sequencing in additional subjects with DRS uncovered DVL1 exon 14 mutations in five individuals, including a pair of monozygotic twins. In total, six distinct frameshift mutations were found in eight subjects, and all were heterozygous truncating variants within the penultimate exon of DVL1. In five families in which samples from unaffected parents were available, the variants were demonstrated to represent de novo mutations. All variant alleles are predicted to result in a premature termination codon within the last exon, escape nonsense-mediated decay (NMD), and most likely generate a C-terminally truncated protein with a distinct -1 reading-frame terminus. Study of the transcripts extracted from affected subjects' leukocytes confirmed expression of both wild-type and variant alleles, supporting the hypothesis that mutant mRNA escapes NMD. Genomic variants identified in our study suggest that truncation of the C-terminal domain of DVL1, a protein hypothesized to have a downstream role in the Wnt-5a non-canonical pathway, is a common cause of DRS.
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De Benedetti F, Ruperto N, Brunner H, Grom A, Wulffraat N, Henrickson M, Jerath R, Kimura Y, Kadva AK, Wang J, Martini A, Lovell D. Tapering and withdrawal of tocilizumab in patients with systemic juvenile idiopathic arthritis in inactive disease: results from an alternative dosing regimen in the TENDER study. Pediatr Rheumatol Online J 2014. [PMCID: PMC4184132 DOI: 10.1186/1546-0096-12-s1-o13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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45
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Horneff G, Ruperto N, Wallace C, Bereswill M, Cardoso A, Kalabic J, Kupper H, Brunner H. OP0006 Long-Term Safety and Effectiveness of Adalimumab in Children with Moderately to Severely Active Polyarticular or Polyarticular-Course Juvenile Idiopathic Arthritis: Table 1. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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46
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Brunner H, Fritsch RH, Hausser KH. Notizen: Cross Polarization in Electron Nuclear Double Resonance by Satisfying the Hartmann-Hahn Condition. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/zna-1987-1217] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The polarization of electronic spins S is transferred to nuclear spins I by cross relaxation in an electron nuclear double resonance experiment. The cross relaxation becomes very efficient with a time constant Tcr of about 0.5 microseconds if the Hartmann-Hahn condition is satisfied for electronic spins S spin-lock ed to the microwave field B1,S in the rotating frame and for proton spins / in the static magnetic field B0.
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Brachat A, Grom A, Wulffraat N, Brunner H, Quartier P, Brik R, McCann L, Ozdogan H, Rutkowska-Sak L, Schneider R, Gerloni V, Harel L, Terreri M, Houghton K, Joos R, Kingsbury D, Lopez-Benitez J, Bek S, Schumacher M, Valentin M, Gram H, Abrams K, Martini A, Ruperto N, Lovell D, Nirmala N. OP0007 Changes in Gene Expression and Inflammatory Proteins in Systemic Juvenile Idiopathic Arthritis Patients on Canakinumab Therapy. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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49
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Quartier P, Grom A, Ruperto N, Brunner H, Schikler K, Erguven M, Goffin L, Hofer M, Kallinich T, Marzan K, Gaillez C, Lheritier K, Abrams K, Martini A, Lovell D. OP0185 Efficacy of Canakinumab in Biologic NaÏVe versus Previously Biologic-Exposed SJIA Patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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50
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De Benedetti F, Brunner H, Ruperto N, Kenwright A, Devlin C, Calvo I, Cuttica R, Ravelli A, Schneider R, Eleftheriou D, Wouters C, Xavier R, Zemel L, Baildam E, Burgos-Vargas R, Dolezalova P, Garay S, Joos R, Grom A, Wulffraat N, Zuber Z, Zulian F, Lovell D, Martini A. FRI0328 Efficacy and safety of tocilizumab (TCZ) in patients with systemic juvenile idiopathic arthritis (SJIA): 2-year data from tender, a phase 3 clinical trial. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2012-eular.2785] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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