Clinical Study of Recombinant Human Activated Coagulation Factor VII for Injection in Patients With Hemophilia With Inhibitor
Study Details
- Hemophilia A
- Hemophilia B
- Drug: Recombinant human activated coagulation factor VII for injection
- Inclusion Criteria:
- 1 Diagnosed as congenital hemophilia A or B, and meet the following conditions:
- FⅧ\<1% or FIX activity\<2%;
- FⅧ inhibitor or FⅨ inhibitor titer in the screening period\>5 BU (Nijmegen modified Bethesda method of detection)."
- 2 Age ≥18 and ≤65 years, male or female.
- 3 There have been at least two incidents of bleeding of any kind in the last six months.
- 4 No other drugs for the treatment of hemophilia have been used within 72hours (3 days) before administration, including prothrombin complex and any coagulation factor VII or activated coagulation factor VII、coagulation factor VIII、coagulation factor IX products, cryoprecipitate, fresh plasma and whole blood, etc.
- 5 Subjects of childbearing age agree to take effective contraceptive measures throughout the trial period, and continue to 28 days after the last medication.
- 6 Volunteer to participate in this study, sign an informed consent form, have good compliance, and be able to cooperate with the experimental observation.
- Exclusion Criteria:
- 1 Any other bleeding disease except Congenital hemophilia A or B.
- 2 Patients with any previous medical history or symptoms of arterial or venous thromboembolic events (such as atherosclerosis, myocardial infarction, ischemic stroke, transient ischemic attack, deep vein thrombosis or pulmonary hypertension embolism) or disseminated intravascular coagulation (DIC) within the past 1 year.
- 3 Baseline and previous values of FⅦ inhibitor or activated recombinant human coagulation factor VII inhibitor is positive.
- 4 Vitamin K deficiency.
- 5 Human immunodeficiency virus (HIV) positive and cluster of differentiation 4 (CD4) count ≤200/μl, the number of virus carriers ≥200 particles/μl or ≥400000 copies/ml.
- 6 Subjects plan to perform elective surgery during the trial period.
- 7 Those who are allergic to test drugs or any excipients.
- 8 Severe anemia and need blood transfusion.
- 9 Platelet count \<80×10\^9/L.
- 10 Obvious liver or kidney damage: glutamic-pyruvic transaminase (ALT) or aspartic transaminase (AST)\>2.5×ULN, or total bilirubin\>1.5×ULN or serum creatinine\>1.5×ULN.
- 11 Severe heart disease, including myocardial infarction, cardiac insufficiency grade 3 or above, the current New York Heart Association cardiac function grade II-IV.
- 12 There was a prior intracranial hemorrhage
- 13 Those who had used or planned to use any anticoagulants, antifibrinants and drugs affecting platelet function during the first week of medication included non-steroidal anti-inflammatory drugs (NSAIDs) such as aspirin
- 14 Hypertension that cannot be controlled with drug treatment: systolic blood pressure\> 150 mmHg or diastolic blood pressure\> 90 mmHg.
- 15 Participated in other clinical studies (except Activated coagulation factor VII, coagulation factor VIII and coagulation factor IX trials) within one month before the first medication.
- 16 Alcoholism, drug abuse, mental disorders, other severe acute or chronic diseases, greater abnormal laboratory values, and those who are considered unsuitable by the researcher.
Protocol Summary
This study is looking at how safe it is to switch from emicizumab to Mim8, in people with haemophilia A. Mim8 is a new medicine that is used to prevent bleeding episodes in people with haemophilia A. Mim8 works by replacing the function of the missing clotting factor VIII (FVIII). Mim8 will be injected under the skin using a pen-injector either once every week, once every two weeks or once every month. The participants will be trained in using the pen injector. The participants can choose themselves, in collaboration with the study doctor how often they get Mim8 in this study. When the participant will get their first Mim8 injection depends on their current treatment with emicizumab. The participants will get their first Mim8 injection at Visit 2. Participants will have between 6 and 27 Mim8 injections. The total number of injections participants will have depends on their dosing frequency. The study will last for about 6-12 months. While taking part in this study, there are some restrictions about what medicine participant can use. The study doctor will tell the participants more about this. In case the participants experience bleeds, these can be treated with additional haemostatic medicine as agreed with the study doctor. Female participants cannot take part if they are pregnant, breast-feeding or plan to get pregnant during the study period.