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Liesner, Ri J; Abraham, Aby; Altisent, Carmen; Belletrutti, Mark J; Carcao, Manuel; Carvalho, Manuela; Chambost, Hervé; Chan, Anthony K C; Dubey, Leonid; Ducore, Jonathan; Gattens, Michael; Gresele, Paolo; Gruel, Yves; Guillet, Benoit; Jimenez-Yuste, Victor; Kitanovski, Lidija; Klukowska, Anna; Lohade, Sunil; Mancuso, Maria Elisa; Oldenburg, Johannes; Pavlova, Anna; Pollio, Berardino; Sigaud, Marianne; Vdovin, Vladimir; Vilchevska, Kateryna; Wu, John K M; Jansen, Martina; Belyanskaya, Larisa; Walter, Olaf; Knaub, Sigurd; Neufeld, Ellis J
Thrombosis and haemostasis, 11/2021, Letnik: 121, Številka: 11Journal Article
FVIII inhibitor development is the most serious contemporary treatment complication in haemophilia A, particularly in previously untreated patients (PUPs). No inhibitors developed in clinical trials in previously treated patients treated with simoctocog alfa (Nuwiq), a fourth-generation recombinant FVIII produced in a human cell line. The NuProtect study investigated the immunogenicity of simoctocog alfa in PUPs. NuProtect was a prospective, multinational, open-label, non-controlled, phase III study. PUPs with severe haemophilia A (FVIII:C <1%) of any age and ethnicity were treated with simoctocog alfa for 100 exposure days or a maximum of 5 years. Patients were true PUPs without prior exposure to FVIII concentrates or blood components. Inhibitor titres were measured with the Nijmegen-modified Bethesda assay; cut-off for positivity was 0.6 BU mL (≥0.6 to <5 low-titre, ≥5 high titre). A total of 108 PUPs with a median age at first treatment of 12.0 months (interquartile range: 8.0-23.5) were treated with simoctocog alfa. mutation type was known for 102 patients (94.4%) of whom 90 (88.2%) had null mutations and 12 (11.8%) had non-null mutations. Of 105 PUPs evaluable for inhibitor development, 28 (26.7%) developed inhibitors; 17 high titre (16.2%) and 11 low titre (10.5%). No PUPs with non-null mutations developed inhibitors. In the NuProtect study, the rate of inhibitor development in PUPs with severe haemophilia A treated with simoctocog alfa was lower than the rate reported for hamster-cell-derived recombinant factor VIII products in other recent clinical trials. No inhibitors were reported in PUPs with non-null mutations.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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