Intravenous Immunoglobulin (IVIG, Bioven) Efficacy and Safety in Chronic Primary Immune Thrombocytopenia (ITP) in Adults

Inclusion criteria

• Signed Patient Informed Consent Form for participation in the study;
• Men and women aged 18-65;
• Confirmed primary chronic ITP (lasting > 12 months since diagnosis);
• A full blood count should be normal except for the isolated thrombocytopenia. Patients with low hemoglobin levels (but above 90 g / l) may be included if there are symptoms of bleeding;
• If bleeding symptoms are diagnosed, the reticulocyte count should be measured;
• Platelet count <30 x 109 / L;
• If the patient is taking corticosteroids, the treatment regimen/dose should be stable (at least 2 weeks prior to screening);
• Negative pregnancy test (for women of child-bearing potential);
• Willingness to use effective and reliable methods of contraception throughout the entire study period;
• The results of physical, instrumental, and laboratory examination of patients should be within the normal range or deviations should be regarded by the researcher as clinically insignificant;
• Ability, according to the researcher, to follow all the requirements of the study protocol;

Exclusion criteria

• Known intolerance to plasma and immunoglobulin preparations;
• Drug allergy or hypersensitivity to immunoglobulin preparations;
• Confirmed deficiency of immunoglobulin A (IgA) and antibodies to IgA.
• Contraindications to immunoglobulin administration according to the instructions for medical use;
• Pregnancy and lactation;
• Any clinically significant hepatic impairment (increase of serum transaminase levels by more than 3 times the upper limit of normal);
• Serum creatinine levels are more than two times higher than the upper limit of normal for a given age and sex;
• Severe cardiovascular insufficiency (HF III);
• History of thrombosis or presence of significant risk factors for thrombosis.
• Patients with preventive splenectomy;
• Hemostatic disorders other than chronic thrombocytopenia;
• Persons with acute or exacerbation of chronic diseases of the gastrointestinal tract associated with the risk of bleeding, acute infectious diseases, pathologies of the respiratory system;
• Proven case of primary immunodeficiency;
• Secondary immune thrombocytopenia;
• Virus infections (Epstein-Barr, Cytomegalovirus, Parvovirus, Hepatitis B and C);
• Documented HIV infection
• Positive reaction of Wassermann (RW) test result;
• Systemic immunopathological diseases (rheumatic diseases, nephritis, etc.);
• Oncological diseases;
• Diabetes mellitus;
• Thyroid diseases;
• History of mental illness;
• Known drug addiction;
• Any other concomitant decompensated diseases or acute conditions, the presence of which, according to the researcher, may significantly affect the results of the study;
• The need to prescribe drugs that are incompatible with the administration of the drug in this study: other immunoglobulin preparations in addition to the study drug, cytostatic drugs, monoclonal antibodies, Avatrombopag);
• Experimental treatment (e.g. Rituximab therapy) for 3 months prior to screening);
• Blood transfusions or transfusions of blood products in the last 6 months prior to inclusion in the study;
• Administration of IVIG 30 days prior to screening;
• Participation in any other study currently or within the last 30 days;

Criteria for exclusion of subjects (discontinuation of treatment with the study drug):

• Patient's wish
• Occurrence of severe and/or unexpected Adverse events (AE) or Adverse reactions (AR) in patient during the study, that require discontinuation of the drug;
• The need to prescribe drugs prohibited in this study.
• Significant deterioration of the patient's condition during the study period;
• Failure of the patient to adhere to the treatment regimen;
• Failure of the patient to follow the procedures established under the protocol;