Specific IgG Antibody in Patients With Primary Antibody Deficiencies Treated With Subcutaneous Immunoglobulin

Federal University of São Paulo

Status

Completed

Conditions

Common Variable Immunodeficiency

Agammaglobulinemia

Treatments

Biological: gammaglobulin

Study type

Interventional

Funder types

Other

Industry

Identifiers

NCT00661401

315970

310570

Details and patient eligibility

About

Objective: Measure serum IgG antibody to Streptococcus pneumoniae serotypes 1, 3, 5, 6B, 9V e 14, Haemophilus influenzae type b and tetanus toxoid in patients with primary antibody deficiencies who were treated with subcutaneous immunoglobulin infusions.

Full description

Therapy with polyvalent immunoglobulin (Ig) has been established as the standard therapy for antibody deficiencies for several decades now. Although subcutaneous infusions were originally proposed as an alternative to intramuscular injections, more recently, this method has been proven as a safe and convenient method for providing immunoglobulin levels in adults and children. Subcutaneous administration of immunoglobulins has some clinical advantages over intravenous immunoglobulin infusions (IVIG) , including a more benign side effect profile, better sustained levels of IgG in the blood and reduced cost. An additional benefit is an improvement in the quality of life, which is in part secondary to the feasibility of the patients to administer it themselves at home. The most common infections in primary antibody deficiency patients involves encapsulated bacteria, mainly Streptococcus pneumoniae and Haemophilus influenzae type b. The aim of this study is to verify if patients with antibody deficiency receiving subcutaneous immunoglobulin (SCIG) infusions keep protective antibody levels to Streptococcus pneumoniae, Haemophilus influenzae type b (Hib) and tetanus toxoid.

Enrollment

5 patients

Sex

All

Ages

2 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

a diagnosis of a primary immunodeficiency disease with hypo-or agammaglobulinemia
diagnosis performed according to the WHO definitions
already been treated with Intravenous immunoglobulin or subcutaneous immunoglobulin for at least 6 months prior to enrollment into this study
documented IgG trough levels (at least two values), type of used IgG preparation, dosage and dosage interval over a period of 6 months prior to enrollment into this study

Exclusion criteria

history of hypersensitivity to the study medication or to drugs with similar chemical structures
hypersensitivity to IgA
subjects currently requiring <400 or > 600 mg/kg/b.w. immunoglobulin per month
subjects whose dosage intervals for IV Ig are < 3 weeks
know pregnancy or positive pregnancy test
nursing mothers
childbearing potential, if an acceptable birth control is not practiced
history of chronic or persisting renal insufficiency (serum creatinine above upper limit of normal)
history of chronic or persisting hepatic insufficiency (ALT> 2 times the upper limit of normal)
risk of developing acute renal failure (Diabetes mellitus, volume depletion, sepsis, paraproteinemia)
any symptomatic heart disease requiring treatment (NYHA class II or above)
history of seizure disorder
history or risk for occlusive vascular disease
indication of active hepatitis A, B, or C at screening (HAV-PCR, HBV-PCR, or HCV-PCR positive)
detection of HIV-1 PCR positive
likelihood of requiring treatment during the study period with drugs not permitted by the study protocol
progressive fatal disease/life expectancy of less than 12 months
history of drug or alcohol abuse
pathological mental condition rendering the subject unable to understand, scope and possible consequences of the study and/or evidence of an uncooperative attitude
treatment with nephrotoxic drugs during the last 3 weeks
treatment with any other investigational drug in the last 3 months before study entry or likelihood of treatment with another investigational grug during the study period
evidence of uncooperative attitude
vaccination against hepatitis B within 3 months before enrollment into the study
former participation in this trial