Abstract
Background and objectives
Observing biomarkers that affect alternative pathway dysregulation components may be effective in obtaining a new and more rapid diagnostic portrayal of atypical hemolytic uremic syndrome. We have conducted a systematic review on the aHUS biomarkers: C3, C5a, C5b-9, factor B, complement factor B, H, and I, CH50, AH50, d-dimer, as well as anti-CFH antibodies.
Methods
An exhaustive literature search was conducted for aHUS patient population plasma/serum, collected/reported at the onset of diagnosis. A total of 60 studies were included with the data on 837 aHUS subjects, with at least one biomarker reported.
Results
The biomarkers C3 [mean (SD): 72.1 (35.0), median: 70.5 vs. reference range: 75–175 mg/dl, n = 752]; CH50 [28.3 (32.1), 24.3 vs. 30–75 U/ml, n = 63]; AH50 [27.6% (30.2%), 10% vs. ≥ 46%, n = 23]; and CFB [13.1 (6.6), 12.4, vs. 15.2–42.3 mg/dl, n = 19] were lower among aHUS subjects as compared with the reference range.
The biomarkers including C4 [mean (SD): 20.4 (9.5), median: 20.5 vs. reference range: 14–40 mg/dl, n = 343]; C4d [7.2 (6.5), 4.8 vs. ≤ 9.8 μg/ml, n = 108]; CFH [40.2 (132.3), 24.5 vs. 23.6–43.1 mg/dl, n = 123 subjects]; and CFI [8.05 (5.01), 6.55 mg/dl vs. 4.4–18.1 mg/dl, n = 38] were all observed to be within the reference range among aHUS subjects.
The biomarkers C5a [mean (SD): 54.9 (32.9), median: 48.8 vs. reference range: 10.6–26.3 mg/dl, n = 117]; C5b-9 [466.0 (401.4), 317 (186–569.7) vs. ≤ 250 ng/ml, n = 174]; Bb [2.6 (2.1), 1.9 vs. ≤ 1.6 μg/ml, n = 77] and d-dimer [246 (65.05), 246 vs. < 2.2 ng/ml, 2, n = 2 subjects] were higher among patients with aHUS compared with the reference range.
Conclusion
If a comprehensive complement profile were built using our data, aHUS would be identified by low levels of C3, CH50, AH50, and CFB along with increased levels of C5a, C5b-9, Bb, anti-CFH autoantibodies, and d-dimer.
Graphical abstract
A higher resolution version of the Graphical abstract is available as Supplementary information.
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Data availability
All data generated or analyzed during this study are included in this article. Further enquiries can be directed to the corresponding author.
Code availability
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Abbreviations
- aHUS :
-
Atypical hemolytic uremic syndrome
- AP:
-
Alternative pathway
- TMA:
-
Thrombotic microangiopathy
- TTP:
-
Thrombotic thrombocytopenic purpura
- STEC-HUS:
-
Shiga toxin-producing Escherichia coli hemolytic uremic syndrome
- CFB:
-
Complement factor B
- CFH:
-
Complement factor H
- CFI:
-
Complement factor I
- MAC:
-
Membrane attack complex
- TCC:
-
Terminal complement complex
References
Noris M, Caprioli J, Bresin E, Mossali C et al (2010) Relative role of genetic complement abnormalities in sporadic and familial aHUS and their impact on clinical phenotype. Clin J Am Soc Nephrol 5:1844–1859. https://doi.org/10.2215/CJN.02210310
Yoshida Y, Kato H, Ikeda Y, Nangaku M (2019) Pathogenesis of atypical hemolytic uremic syndrome. J Atheroscler Thromb 26:99–110. https://doi.org/10.5551/jat.RV17026
Moake JL (2002) Thrombotic Microangiopathies. N Engl J Med 347:589–600. https://doi.org/10.1056/NEJMra020528
Oh J, Oh D, Lee SJ, Kim JO, Korean TTP Registry Investigators et al (2019) Prognostic utility of ADAMTS13 activity for the atypical hemolytic uremic syndrome (aHUS) and comparison of complement serology between aHUS and thrombotic thrombocytopenic purpura. Blood Res 54:218–228. https://doi.org/10.5045/br.2019.54.3.218
Kato H, Nangaku M, Hataya H, Sawai T et al (2016) Clinical guides for atypical hemolytic uremic syndrome in Japan. Clin Exp Nephrol 20:536–543. https://doi.org/10.1007/s10157-016-1276-6
Cataland SR, Holers VM, Geyer S, Yang S, Wu HM (2014) Biomarkers of terminal complement activation confirm the diagnosis of aHUS and differentiate aHUS from TTP. Blood 123:3733–3738. https://doi.org/10.1182/blood-2013-12-547067
Nguyen MH, Mathew JJ, Denunzio TM, Carmichael MG (2014) Diagnosis of atypical hemolytic uremic syndrome and response to eculizumab therapy. Hawaii J Med Public Health 73(9 Suppl 1):22–24
Avila Bernabeu AI, Cavero Escribano T, Cao Vilarino M (2020) Atypical hemolytic uremic syndrome: new challenges in the complement blockage era. Nephron 144:537–549. https://doi.org/10.1159/000508920
Cofiell R, Kukreja A, Bedard K, Yan Y et al (2015) Eculizumab reduces complement activation, inflammation, endothelial damage, thrombosis, and renal injury markers in aHUS. Blood 125:3253–3262. https://doi.org/10.1182/blood-2014-09-600411
Richards A, Kathryn Liszewski M, Kavanagh D, Fang CJ, Moulton E, Fremeaux-Bacchi V, Remuzzi G, Noris M, Goodship TH, Atkinson JP (2007) Implications of the initial mutations in membrane cofactor protein (MCP; CD46) leading to atypical hemolytic uremic syndrome. Mol Immunol 44:111–122. https://doi.org/10.1016/j.molimm.2006.07.004
Puraswani M, Khandelwal P, Saini H, Saini S et al (2019) Clinical and immunological profile of anti-factor H antibody associated atypical hemolytic uremic syndrome: a nationwide database. Front Immunol 10:1282. https://doi.org/10.3389/fimmu.2019.01282
Fremeaux-Bacchi V, Fakhouri F, Garnier A, Bienaimé F et al (2013) Genetics and outcome of atypical hemolytic uremic syndrome: a nationwide French series comparing children and adults. Clin J Am Soc Nephrol 8:554–562. https://doi.org/10.2215/CJN.04760512
Noris M, Remuzzi G (2013) Managing and preventing atypical hemolytic uremic syndrome recurrence after kidney transplantation. Curr Opin Nephrol Hypertens 22:704–712. https://doi.org/10.1097/MNH.0b013e328365b3fe
Esparza-Gordillo J, Goicoechea de Jorge E, Buil A, Carreras Berges L et al (2005) Predisposition to atypical hemolytic uremic syndrome involves the concurrence of different susceptibility alleles in the regulators of complement activation gene cluster in 1q32 [published correction appears in Hum Mol Genet 14:1107]. Hum Mol Genet 14:703–712. https://doi.org/10.1093/hmg/ddi066
Bresin E, Rurali E, Caprioli J, Sanchez-Corral P et al (2013) Combined complement gene mutations in atypical hemolytic uremic syndrome influence clinical phenotype. J Am Soc Nephrol 24:475–486. https://doi.org/10.1681/ASN.2012090884
Lemaire M, Frémeaux-Bacchi V, Schaefer F, Choi M et al (2013) Recessive mutations in DGKE cause atypical hemolytic-uremic syndrome. Nat Genet 45:531–536. https://doi.org/10.1038/ng.2590
Sellier-Leclerc AL, Fremeaux-Bacchi V, Dragon-Durey MA, Macher MA et al (2007) Differential impact of complement mutations on clinical characteristics in atypical hemolytic uremic syndrome. J Am Soc Nephrol 18:2392–2400. https://doi.org/10.1681/ASN.2006080811
Hofer J, Janecke AR, Zimmerhackl LB, Riedl M et al (2013) Complement factor H-related protein 1 deficiency and factor H antibodies in pediatric patients with atypical hemolytic uremic syndrome. Clin J Am Soc Nephrol 8:407–415. https://doi.org/10.2215/CJN.01260212
Valoti E, Alberti M, Iatropoulos P, Piras R et al (2019) Rare functional variants in complement genes and anti-FH autoantibodies-associated aHUS. Front Immunol 10:853. https://doi.org/10.3389/fimmu.2019.00853
Dragon-Durey MA (2005) Anti-factor h autoantibodies associated with atypical hemolytic uremic syndrome. J Am Soc Nephrol 16:555–563. https://doi.org/10.1681/asn.2004050380
Lee JM, Park YS, Lee JH, Park SJ et al (2015) Atypical hemolytic uremic syndrome: Korean pediatric series. Pediatr Int 57:431–438. https://doi.org/10.1111/ped.12549
Bernabéu-Herrero ME, Jiménez-Alcázar M, Anter J, Pinto S et al (2015) Complement factor H, FHR-3 and FHR-1 variants associate in an extended haplotype conferring increased risk of atypical hemolytic uremic syndrome. Mol Immunol 67:276–286. https://doi.org/10.1016/j.molimm.2015.06.021
Dragon-Durey MA, Blanc C, Marliot F, Loirat C et al (2009) The high frequency of complement factor H related CFHR1 gene deletion is restricted to specific subgroups of patients with atypical haemolytic uraemic syndrome. J Med Genet 46:447–450. https://doi.org/10.1136/jmg.2008.064766
Leban N, Aloui S, Touati D, Lakhdhar R et al (2011) Atypical hemolytic uremic syndrome in the Tunisian population. Int Urol Nephrol 43:559–564. https://doi.org/10.1007/s11255-010-9754-3
Józsi M, Licht C, Strobel S, Zipfel SL et al (2008) Factor H autoantibodies in atypical hemolytic uremic syndrome correlate with CFHR1/CFHR3 deficiency. Blood 111:1512–1514. https://doi.org/10.1182/blood-2007-09-109876
Moore I, Strain L, Pappworth I, Kavanagh D et al (2010) Association of factor H autoantibodies with deletions of CFHR1, CFHR3, CFHR4, and with mutations in CFH, CFI, CD46, and C3 in patients with atypical hemolytic uremic syndrome. Blood 115:379–387. https://doi.org/10.1182/blood-2009-05-221549
Matsumoto T, Toyoda H, Amano K, Hirayama M et al (2018) Clinical manifestation of patients with atypical hemolytic uremic syndrome with the C3 p.I1157T variation in the Kinki Region of Japan. Clin Appl Thromb Hemost 24:1301–1307. https://doi.org/10.1177/1076029618771750
Martínez-Barricarte R, Heurich M, López-Perrote A, Perrote-Lopez A, Tortajada A et al (2015) The molecular and structural bases for the association of complement C3 mutations with atypical hemolytic uremic syndrome. Mol Immunol 66:263–273. https://doi.org/10.1016/j.molimm.2015.03.248
Fan X, Yoshida Y, Honda S, Matsumoto M, Sawada Y et al (2013) Analysis of genetic and predisposing factors in Japanese patients with atypical hemolytic uremic syndrome. Mol Immunol 54:238–246. https://doi.org/10.1016/j.molimm.2012.12.006
Manenti L, Gnappi E, Vaglio A, Allegri L et al (2013) Atypical haemolytic uraemic syndrome with underlying glomerulopathies. A case series and a review of the literature. Nephrol Dial Transplant 28:2246–2259. https://doi.org/10.1093/ndt/gft220
Malina M, Gulati A, Bagga A, Majid MA, Simkova E, Schaefer F (2013) Peripheral gangrene in children with atypical hemolytic uremic syndrome. Pediatrics 131:e331–e335. https://doi.org/10.1542/peds.2012-0903
Roumenina LT, Jablonski M, Hue C, Blouin J et al (2009) Hyperfunctional C3 convertase leads to complement deposition on endothelial cells and contributes to atypical hemolytic uremic syndrome. Blood 114:2837–2845. https://doi.org/10.1182/blood-2009-01-197640
Lee BH, Kwak SH, Shin JI, Lee SH et al (2009) Atypical hemolytic uremic syndrome associated with complement factor H autoantibodies and CFHR1/CFHR3 deficiency. Pediatr Res 66:336–340. https://doi.org/10.1203/PDR.0b013e3181b1bd4a
Galbusera M, Noris M, Gastoldi S, Bresin E et al (2019) An ex vivo test of complement activation on endothelium for individualized eculizumab therapy in hemolytic uremic syndrome. Am J Kidney Dis 74:56–72. https://doi.org/10.1053/j.ajkd.2018.11.012
Volokhina EB, Westra D, van der Velden TJ, van de Kar NC, Mollnes TE, van den Heuvel LP (2015) Complement activation patterns in atypical haemolytic uraemic syndrome during acute phase and in remission. Clin Exp Immunol 181:306–313. https://doi.org/10.1111/cei.12426
Mortensen S, Kidmose RT, Petersen SV, Szilágyi Á, Prohászka Z, Andersen GR (2015) Structural basis for the function of complement component C4 within the classical and lectin pathways of complement. J Immunol 194:5488–5496. https://doi.org/10.4049/jimmunol.1500087
Sridharan M, Go RS, Abraham RS, Fervenza FC, Sethi S, Bryant SC, Spears GM, Murray DL, Willrich MAV (2018) Diagnostic utility of complement serology for atypical hemolytic uremic syndrome. Mayo Clin Proc 93:1351–1362. https://doi.org/10.1016/j.mayocp.2018.07.008
Noris M, Galbusera M, Gastoldi S, Macor P et al (2014) Dynamics of complement activation in aHUS and how to monitor eculizumab therapy. Blood 124:1715–1726. https://doi.org/10.1182/blood-2014-02-558296
Al Ustwani O, Lohr J, Dy G, LeVea C et al (2014) Eculizumab therapy for gemcitabine induced hemolytic uremic syndrome: case series and concise review. J Gastrointest Oncol 5:E30–E33
Okusawa S, Yancey KB, van der Meer JW, Endres S et al (1988) C5a stimulates secretion of tumor necrosis factor from human mononuclear cells in vitro. Comparison with secretion of interleukin 1 beta and interleukin 1 alpha. J Exp Med 168:443–448. https://doi.org/10.1084/jem.168.1.443
Prohászka Z, Varga L, Füst G (2012) The use of ‘real-time’ complement analysis to differentiate atypical haemolytic uraemic syndrome from other forms of thrombotic microangiopathies. Br J Haematol 158:424–425
Tsai HM, Kuo E (2014) Eculizumab therapy leads to rapid resolution of thrombocytopenia in atypical hemolytic uremic syndrome. Adv Hematol 2014:295323
Charles Jennette JJ, Hussein Gasim AM Pathology of medical renal disease. In: Reisner HM (ed) Pathology: A Modern Case Study, 2e. McGraw-Hill
Jaskowski TD, Martins TB, Litwin CM, Hill HR (1999) Comparison of three different methods for measuring classical pathway complement activity. Clin Diagn Lab Immunol 6:137–139. https://doi.org/10.1128/CDLI.6.1.137-139.1999
Schröder-Braunstein J, Kirschfink M (2019) Complement deficiencies and dysregulation: Pathophysiological consequences, modern analysis, and clinical management. Mol Immunol 114:299–311
Kolb WP, Morrow PR, Tamerius JD (1989) Ba and Bb fragments of factor B activation: fragment production, biological activities, neoepitope expression and quantitation in clinical samples. Complement Inflamm 6:175–204
Willrich MAV, Andreguetto BD, Sridharan M, Fervenza FC et al (2018) The impact of eculizumab on routine complement assays. J Immunol Methods 460:63–71. https://doi.org/10.1016/j.jim.2018.06.010
Goicoechea de Jorge E, Harris CL, Esparza-Gordillo J, Carreras L et al (2007) Gain-of-function mutations in complement factor B are associated with atypical hemolytic uremic syndrome [published correction appears in Proc Natl Acad Sci U S A 104:10749]. Proc Natl Acad Sci U S A 104:240–245. https://doi.org/10.1073/pnas.0603420103
Wong E, Kavanagh D (2018) Diseases of complement dysregulation-an overview. Semin Immunopathol 40:49–64. https://doi.org/10.1007/s00281-017-0663-8
Nilsson SC, Sim RB, Lea SM, Fremeaux-Bacchi V, Blom AM (2011) Complement factor I in health and disease. Mol Immunol 48:1611–1620
Bu F, Maga T, Meyer NC, Wang K et al (2014) Comprehensive genetic analysis of complement and coagulation genes in atypical hemolytic uremic syndrome. J Am Soc Nephrol 25:55–64. https://doi.org/10.1681/ASN.2013050453
Lee BC, Mayer CL, Leibowitz CS, Stearns-Kurosawa DJ, Kurosawa S (2013) Quiescent complement in nonhuman primates during E coli Shiga toxin-induced hemolytic uremic syndrome and thrombotic microangiopathy. Blood 122:803–806. https://doi.org/10.1182/blood-2013-03-490060
Palma LM, Langman CB (2016) Critical appraisal of eculizumab for atypical hemolytic uremic syndrome. J Blood Med 7:39–72. https://doi.org/10.2147/JBM.S36249
Knight EL, Verhave JC, Spiegelman D, Hillege HL, de Zeeuw D, Curhan GC, de Jong PE (2004) Factors influencing serum cystatin C levels other than renal function and the impact on renal function measurement. Kidney Int 65:1416–1421. https://doi.org/10.1111/j.1523-1755.2004.00517.x
Randers E, Kristensen JH, Erlandsen EJ, Danielsen H (1998) Serum cystatin C as a marker of the renal function. Scand J Clin Lab Invest 58:585–592. https://doi.org/10.1080/00365519850186210
Ghiggeri GM, Bruschi M, Candiano G, Rastaldi MP et al (2002) Depletion of clusterin in renal diseases causing nephrotic syndrome. Kidney Int 62:2184–2194
Fraga-Rodriguez GM, Brió-Sanagustin S, Turón-Viñas E, Dixon BP, Carreras-González E (2017) Eculizumab in a child with atypical haemolytic uraemic syndrome and haemophagocytic lymphohistiocytosis triggered by cytomegalovirus infection. BMJ Case Rep 2017:bcr2016219065
Zheng X, Chen S, Zhang F, Ye M, Chen J, Zhang S (2021) Use of fibrin monomer and D-Dimer in assessing overt and nonovert disseminated intravascular coagulation. Blood Coagul Fibrinolysis 32:248–252. https://doi.org/10.1097/MBC.0000000000001025
Loirat C, Fakhouri F, Ariceta G, Besbas N et al (2016) An international consensus approach to the management of atypical hemolytic uremic syndrome in children. Pediatr Nephrol 31:15–39. https://doi.org/10.1007/s00467-015-3076-8
Noris M, Bresin E, Mele C, Remuzzi G (2007) Genetic atypical hemolytic-uremic syndrome. In: Adam MP, Ardinger HH, Pagon RA et al (eds) GeneReviews®. University of Washington, Seattle, Seattle
Dragon-Durey MA, Sethi SK, Bagga A, Blanc C et al (2010) Clinical features of anti-factor H autoantibody-associated hemolytic uremic syndrome. J Am Soc Nephrol 21:2180–2187. https://doi.org/10.1681/ASN.2010030315
Ermini L, Goodship TH, Strain L, Weale ME et al (2012) Common genetic variants in complement genes other than CFH, CD46 and the CFHRs are not associated with aHUS. Mol Immunol 49:640–648. https://doi.org/10.1016/j.molimm.2011.11.003
Kavanagh D, Pappworth IY, Anderson H, Hayes CM et al (2012) Factor I autoantibodies in patients with atypical hemolytic uremic syndrome: disease-associated or an epiphenomenon? Clin J Am Soc Nephrol 7:417–426. https://doi.org/10.2215/CJN.05750611
Govindarajan S, Rawat A, Ramachandran R, Hans R, Dawman L, Tiewsoh K (2020) Anti-complement factor I antibody associated atypical hemolytic uremic syndrome—a new insight for future perspective! Immunobiology 225:152000. https://doi.org/10.1016/j.imbio.2020.152000
Fremeaux-Bacchi V, Dragon-Durey MA, Blouin J, Vigneau C et al (2004) Complement factor I: a susceptibility gene for atypical haemolytic uraemic syndrome. J Med Genet 41:e84. https://doi.org/10.1136/jmg.2004.019083
Johnson S, Stojanovic J, Ariceta G, Bitzan M et al (2014) An audit analysis of a guideline for the investigation and initial therapy of diarrhea negative (atypical) hemolytic uremic syndrome. Pediatr Nephrol 29:1967–1978. https://doi.org/10.1007/s00467-014-2817-4
Fakhouri F, Hourmant M, Campistol JM, Cataland SR, Espinosa M, Gaber AO, Menne J, Minetti EE, Provôt F, Rondeau E, Ruggenenti P, Weekers LE, Ogawa M, Bedrosian CL, Legendre CM (2016) Terminal complement inhibitor eculizumab in adult patients with atypical hemolytic uremic syndrome: a single-arm, open-label trial. Am J Kidney Dis 68:84–93
Legendre C, Rebecca-Sberro-Soussan ZJ (2021) Ravulizumab for the treatment of aHUS in adults: improving quality of life. Kidney Int Rep 6:1489–1491. https://doi.org/10.1016/j.ekir.2021.04.036
Menne J, Delmas Y, Fakhouri F, Licht C et al (2019) Outcomes in patients with atypical hemolytic uremic syndrome treated with eculizumab in a long-term observational study. BMC Nephrol 20:125. https://doi.org/10.1186/s12882-019-1314-1
Legendre CM, Licht C, Muus P, Greenbaum LA et al (2013) Terminal complement inhibitor eculizumab in atypical hemolytic-uremic syndrome. N Engl J Med 368:2169–2181. https://doi.org/10.1056/NEJMoa1208981
McKeage K (2019) Ravulizumab: first global approval. Drugs 79:347–352. https://doi.org/10.1007/s40265-019-01068-2
Tanaka K, Adams B, Aris AM, Fujita N et al (2021) The long-acting C5 inhibitor, ravulizumab, is efficacious and safe in pediatric patients with atypical hemolytic uremic syndrome previously treated with eculizumab [published correction appears in Pediatr Nephrol 36:1033]. Pediatr Nephrol 36:889–898. https://doi.org/10.1007/s00467-020-04774-2
Gäckler A, Schönermarck U, Dobronravov V, La Manna G et al (2021) Efficacy and safety of the long-acting C5 inhibitor ravulizumab in patients with atypical hemolytic uremic syndrome triggered by pregnancy: a subgroup analysis [published correction appears in BMC Nephrol 22:49]. BMC Nephrol 22:5. https://doi.org/10.1186/s12882-020-02190-0
Rondeau E, Scully M, Ariceta G, Barbour T et al (2020) The long-acting C5 inhibitor, Ravulizumab, is effective and safe in adult patients with atypical hemolytic uremic syndrome naïve to complement inhibitor treatment [published correction appears in Kidney Int 98:1621] [published correction appears in Kidney Int 99:1244]. Kidney Int 97:1287–1296. https://doi.org/10.1016/j.kint.2020.01.035
Tesar V, Hruskova Z (2018) Avacopan in the treatment of ANCA-associated vasculitis. Expert Opin Investig Drugs 27:491–496. https://doi.org/10.1080/13543784.2018.1472234
Turkmen K, Baloglu I, Ozer H (2021) C3 glomerulopathy and atypical hemolytic uremic syndrome: an updated review of the literature on alternative complement pathway disorders. Int Urol Nephrol 53:2067–2080. https://doi.org/10.1007/s11255-020-02729-y
US Food and Drug Administration (2015) Scientific considerations in demonstrating biosimilarity to a reference product. Guidance for industry. US Department of Health and Human Services, Food and Drug Administration, Center for Drug Evaluation and Research (CDER), Center for Biologics Evaluation and Research (CBER), Silver Spring
Ptushkin VV, Kulagin AD, Lukina EA, Davydkin IL, Konstantinova TS, Shamrai VS, Minaeva NV, Kudlay DA, Gapchenko EV, Markova OA, Borozinets AY (2020) Results of phase Ib open multicenter clinical trial of the safety, pharmacokinetics and pharmacodynamics of first biosimilar of eculizumab in untreated patients with paroxysmal nocturnal hemoglobinuria during induction of therapy. Ter Arkh 92:77–84. https://doi.org/10.26442/00403660.2020.07.000818
Hutterer K, Polozova A, Kuhns S et al (2019) Analytical and functional similarity of proposed Amgen biosimilar ABP 959 to eculizumab. Presented at 2019 PDA Biosimilars and Vaccines Conference: Lifecycle Similarities and Challenges, Long Beach, CA; May 9-10
Chow V, Pan J, Chien D, Mytych DT, Hanes V (2020) A randomized, double-blind, single-dose, three-arm, parallel group study to determine pharmacokinetic similarity of ABP 959 and eculizumab (Soliris® ) in healthy male subjects. Eur J Haematol 105:66–74. https://doi.org/10.1111/ejh.13411
Samsung Bioepis Co., Ltd (2019) A study to compare SB12 (proposed Eculizumab biosimilar) to Soliris in subjects with paroxysmal nocturnal haemoglobinuria—full text view. ClinicalTrials.gov
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Dr. Raina was the lead author who formulated, structured and wrote this manuscript. Dr. Sethi, Dr. Dragon-Durey, Dr. Shaprio, Dr. Boyer, Dr. Yap, Dr. Bagga, and Dr. Licht all lent their expertise in this field to continuously revise all drafts for their accuracy steering the content to potential clinical applicability. Amrit Khooblall. Divya Sharma, and Priyanka Khandelwal all extensively reviewed, corrected, and edited this manuscript.
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Raina, R., Sethi, S.K., Dragon-Durey, MA. et al. Systematic review of atypical hemolytic uremic syndrome biomarkers. Pediatr Nephrol 37, 1479–1493 (2022). https://doi.org/10.1007/s00467-022-05451-2
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DOI: https://doi.org/10.1007/s00467-022-05451-2