Holling TM, Schooten E, van Den Elsen PJ Function and regulation of MHC class II molecules in T-lymphocytes: of mice and men. Hum Immunol. 2004 Apr;65(4):282-90. doi: 10.1016/j.humimm.2004.01.005.
Kessler CM, Knobl P Acquired haemophilia: an overview for clinical practice. Eur J Haematol. 2015 Dec;95 Suppl 81:36-44. doi: 10.1111/ejh.12689.
Langer AL, Etra A, Aledort L Evaluating the safety of emicizumab in patients with hemophilia A. Expert Opin Drug Saf. 2018 Dec;17(12):1233-1237. doi: 10.1080/14740338.2019.1551356. Epub 2018 Nov 28.
Mahlangu J Emicizumab for the prevention of bleeds in hemophilia A. Expert Opin Biol Ther. 2019 Aug;19(8):753-761. doi: 10.1080/14712598.2019.1626370. Epub 2019 Jun 13.
Mongini PK, Paul WE, Metcalf ES T cell regulation of immunoglobulin class expression in the antibody response to trinitrophenyl-ficoll. Evidence for T cell enhancement of the immunoglobulin class switch. J Exp Med. 1982 Mar 1;155(3):884-902. doi: 10.1084/jem.155.3.884.
Rodriguez-Merchan EC, Valentino LA Emicizumab: Review of the literature and critical appraisal. Haemophilia. 2019 Jan;25(1):11-20. doi: 10.1111/hae.13641. Epub 2018 Nov 15.
Sallah S Treatment of acquired haemophilia with factor eight inhibitor bypassing activity. Haemophilia. 2004 Mar;10(2):169-73. doi: 10.1046/j.1365-2516.2003.00856.x.
Takeyama M, Nogami K, Matsumoto T, Noguchi-Sasaki M, Kitazawa T, Shima M An anti-factor IXa/factor X bispecific antibody, emicizumab, improves ex vivo coagulant potentials in plasma from patients with acquired hemophilia A. J Thromb Haemost. 2020 Apr;18(4):825-833. doi: 10.1111/jth.14746. Epub 2020 Feb 26.
Young G, Callaghan M, Dunn A, Kruse-Jarres R, Pipe S Emicizumab for hemophilia A with factor VIII inhibitors. Expert Rev Hematol. 2018 Nov;11(11):835-846. doi: 10.1080/17474086.2018.1531701. Epub 2018 Oct 10.
Emicizumab in Patients With Acquired Hemophilia A: Multicenter, Single-arm, Open-label Clinical Trial
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.