Immune Globulin Intravenous (Human) [IGIV] Gammagard S/D is a solvent/detergent treated, sterile, freeze-dried preparation of highly purified immunoglobulin G (IgG) derived from large pools of human plasma. The product is manufactured by the Cohn-Oncley cold ethanol fractionation process followed by ultrafiltration and ion exchange chromatography. Source material for fractionation may be obtained from another U.S. licensed manufacturer. The manufacturing process includes treatment with an organic solvent/detergent mixture, 1,2 composed of tri-n-butyl phosphate, octoxynol 9 and polysorbate 80. 3 The Gammagard S/D IGIV manufacturing process provides a significant viral reduction in in vitro studies. 3 These studies, summarized in Table 1 , demonstrate virus clearance during Gammagard S/D manufacturing using infectious Human Immunodeficiency virus, Types 1 and 2 (HIV-1, HIV-2); Bovine Viral Diarrhea virus (BVD), a model virus for Hepatitis C virus; Sindbis virus (SIN), a model virus for lipid enveloped viruses; Pseudorabies virus (PRV), a model virus for lipid-enveloped DNA viruses such as Herpes; Vesicular stomatitis virus (VSV), a model virus for lipid-enveloped RNA viruses; and Encephalomyocarditis virus (EMC), a model virus for non-lipid enveloped viruses. 3 These reductions are achieved through a combination of process chemistry, partitioning and/or inactivation during cold ethanol fractionation and the solvent/detergent treatment. 3
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When reconstituted with the total volume of diluent (Sterile Water for Injection, USP) supplied, this preparation contains approximately 50 mg of protein per mL (5%), of which at least 90% is gamma globulin. The product, reconstituted to 5%, contains a physiological concentration of sodium chloride (approximately 8.5 mg/mL) and has a pH of 6.8 ± 0.4. Stabilizing agents and additional components are present in the following maximum amounts for a 5% solution: 3 mg/mL Albumin (Human), 22.5 mg/mL glycine, 20 mg/mL glucose, 2 mg/mL polyethylene glycol (PEG), µg/mL tri-n-butyl phosphate, 1 µg/mL octoxynol 9, and 100 µg/mL polysorbate 80. If it is necessary to prepare a 10% (100 mg/mL) solution for infusion, half the volume of diluent should be added, as described in the Dosage and Administration section. In this case, the stabilizing agents and other components will be present at double the concentrations given for the 5% solution.
The manufacturing process for Gammagard S/D IGIV isolates IgG without additional chemical or enzymatic modification, and the Fc portion is maintained intact. Gammagard S/D IGIV contains all of the IgG antibody activities which are present in the donor population. On the average, the distribution of IgG sublcasses present in this product is similar to that in normal plasma. 3 Gammagard S/D IGIV contains only trace amounts of IgA (< 3.7 µg/mL in a 5% solution). IgM is also present in trace amounts.
Immune Globulin Intravenous (Human), Gammagard S/D IGIV contains no preservative.
Immune Globulin Intravenous (Human), Gammagard S/D, contains a broad spectrum of IgG antibodies against bacterial and viral agents that are capable of opsonization and neutralization of microbes and toxins. Peak levels of IgG are reached immediately after infusion of Gammagard S/D IGIV S/D. It has been shown that, after infusion, exogenous IgG is distributed relatively rapidly between plasma and extravascular fluid until approximately half is partitioned in the extravascular space. Therefore a rapid initial drop in serum IgG levels is to be expected. 4
As a class, IgG survives longer in vivo than other serum proteins. 4,5 Studies show that the half-life of Gammagard S/D IGIV is approximately 37.7 ± 15 days. 3 Previous studies reported IgG half-life values of 21 to 25 days. 4,5,6 The half-life of IgG can vary considerably from person to person, however. In particular, high concentrations of IgG and hypermetabolism associated with fever and infection have been seen to coincide with a shortened half-life of IgG. 4-7
Gammagard S/D IGIV is indicated for the treatment of primary immunodeficient states, such as: congenital agammaglobulinemia, common variable immunodeficiency, Wiskott-Aldrich syndrome, and severe combined immunodeficiencies. 6,7 This indication was supported by a clinical trial of 17 patients with primary immunodeficiency who received a total of 341 infusions. Gammagard S/D IGIV is especially useful when high levels or rapid elevation of circulating IgG are desired or when intramuscular injections are contraindicated (e.g., small muscle mass).
Gammagard S/D IGIV is indicated for prevention of bacterial infections in patients with hypogammaglobulinemia and/or recurrent bacterial infections associated with B-cell Chronic Lymphocytic Leukemia (CLL). In a study of 81 patients, 41 of whom where treated with Immune Globulin Intravenous (Human), Gammagard S/D IGIV, bacterial infections were significantly reduced in the treatment group. 8,9 In this study, the placebo group had approximately twice as many bacterial infections as the IGIV group. The median time to first bacterial infection for the IGIV group was greater than 365 days. By contrast, the time to first bacterial infection in the placebo group was 192 days. The number of viral and fungal infections, which were for the most part minor, was not statistically different between the two groups.
When a rapid rise in platelet count is needed to prevent and/or to control bleeding in a patient with Idiopathic Thrombocytopenic Purpura, the administration of Gammagard S/D IGIV, should be considered.
The efficacy of Gammagard S/D IGIV has been demonstrated in a clinical study involving 16 patients. Of these 16 patients, 13 had chronic ITP (11 adults, 2 children), and three patients had acute ITP (one adult, two children). All 16 patients (100%) demonstrated a clinically significant rise in platelet count to a level greater than 40,000/mm 3 following the administration of Gammagard S/D IGIV. Ten of the 16 patients (62.5%) exhibited a significant rise to greater than 80,000 platelets/mm 3 . Of these ten patients, seven had chronic ITP (five adults, two children), and three patients had acute ITP (one adult, two children).
The rise in platelet count to greater than 40,000/mm 3 occurred after a single 1 g/kg infusion of Gammagard S/D IGIV in eight patients with chronic ITP (six adults, two children), and in two patients with acute ITP (one adult, one child). A similar response was observed after two 1 g/kg infusions in three adult patients with chronic ITP, and one child with acute ITP. The remaining two adult patients with chronic ITP received more than two 1 g/kg infusions before achieving a platelet count greater than 40,000/mm 3 . The rise in platelet count was generally rapid, occurring within five days. However, this rise was transient and not considered curative. Platelet count rises lasted two to three weeks, with a range of 12 days to six months. It should be noted that childhood ITP may resolve spontaneously without treatment.
Gammagard S/D IGIV is indicated for the prevention of coronary artery aneurysms associated with Kawasaki syndrome. The percentage incidence of coronary artery aneurysm in patients with Kawasaki syndrome receiving Gammagard S/D IGIV either at a single dose of 1 g/kg (n=22) or at a dose of 400 mg/kg for four consecutive days (n=22), beginning within seven days of onset of fever, was 3/44 (6.8%). This was significantly different (p=0.008) from a comparable group of patients that received aspirin only in previous trials and of whom 42/185 (22.7%) experienced coronary artery aneurysms. 19, 22, 23 All patients in the Gammagard S/D IGIV trial received concomitant aspirin therapy and none experienced hypersensitivity-type reactions (urticaria, bronchospasm or generalized anaphylaxis). 18
Several studies have documented the efficacy of intravenous gammaglobulin in reducing the incidence of coronary artery abnormalities resulted from Kawasaki syndrome. 19-25
None known.
Immune Globulin Intravenous (Human) products have been reported to be associated with renal dysfunction, acute renal failure, osmotic nephrosis, and death. 24,26 Patients predisposed to acute renal failure include patients with any degree of pre-existing renal insufficiency, diabetes mellitus, age greater than 65, volume depletion, sepsis, paraproteinemia, or patients receiving known nephrotoxic drugs. Especially in such patients, IGIV products should be administered at the minimum concentration available and the minimum rate of infusion practicable. While these reports of renal dysfunction and acute renal failure have been associated with the use of many of the licensed IGIV products, those containing sucrose as a stabilizer accounted for a disproportionate share of the total number.* See Precautions and Dosage and Administration sections for important information intended to reduce the risk of acute renal failure. * Gammagard S/D IGIV does not contain sucrose |
Immune Globulin Intravenous (Human), Gammagard S/D, should only be administered intravenously. Other routes of administration have not been evaluated.
Immediate anaphylactic and hypersensitivity reactions are a remote possibility. Epinephrine should be available for treatment of any acute anaphylactoid reactions.
Gammagard S/D IGIV contains only trace amounts of IgA (< 3.7 µg/mL in a 5% solution). Nonetheless, it should be given with caution to patients with antibodies to IgA or selective IgA deficiencies. 7,10
There is clinical evidence of a possible association between Immune Globulin Intravenous (Human) (IGIV) administration and thrombotic events. The exact cause of this is unknown; therefore, caution should be exercised in the prescribing and infusion of IGIV in patients with a history of cardiovascular disease or thrombotic episodes. 12-17
As aseptic meningitis syndrome (AMS) has been reported to occur infrequently in association with Immune Globulin Intravenous (Human) (IGIV) treatment. Discontinuation of IGIV treatment has resulted in remission of AMS within several days without sequelae. The syndrome usually begins within several hours to two days following IGIV treatment. It is characterized by symptoms and signs including severe headache, nuchal rigidity, drowsiness, fever, photophobia, painful eye movements, and nausea and vomiting. Cerebrospinal fluid (CSF) studies are frequently positive with pleocytosis up to several thousand cells per cu.mm., predominantly from the granulocytic series, and elevated protein levels up to several hundred mg/dL. Patients exhibiting such symptoms and signs should receive a thorough neurological examination, including CSF studies, to rule out other causes of meningitis. AMS may occur more frequently in association with high dose (2 g/kg) IGIV treatment.
Assure that patients are not volume depleted prior to the initiation of the infusion of IGIV.
Periodic monitoring of renal function tests and urine output is particularly important in patients judged to have a potential increased risk for developing acute renal failure. Renal function, including measurement of blood urea nitrogen (BUN)/serum creatinine, should be assessed prior to the initial infusion of Gammagard S/D IGIV and again at appropriate intervals thereafter. If renal function deteriorates, discontinuation of the product should be considered.
For patients judged to be at risk for developing renal dysfunction, it may be prudent to reduce the amount of product infused per unit time by infusing Gammagard S/D IGIV at a rate less than 13.3 mg IG/kg/min.
Certain components used in the packaging of this product contain natural rubber latex.
Patients should be instructed to immediately report symptoms of decreased urine output, sudden weight gain, fluidretention/edema, and/or shortness of breath (which may suggest kidney damage) to their physician.
See Dosage and Administration Section.
Animal reproduction studies have not been conducted with Immune Globulin Intravenous (Human), Gammagard S/D IGIV. It is also not known whether Gammagard S/D IGIV can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Gammagard S/D IGIV should be given to a pregnant woman only if clearly needed.
Increases in creatinine and blood urea nitogen (BUN) have been observed as soon as one to two days following infusion. Progression to oliguria and anuria requiring dialysis has been observed, although some patients have improved spontaneously following cessation of treatment. 27
Types of severe renal adverse reactions that have been seen following IGIV therapy include:
In general, reported adverse reactions to Gammagard S/D IGIV in patients with either congenital or acquired immunodeficiencies are similar in kind and frequency. Various minor reactions, such as headache, fatigue, chills, backache, leg cramps, lightheadedness, fever, urticaria, flushing, slight elevation of blood pressure, nausea and vomiting may occasionally occur. Slowing or stopping the infusion usually allows the symptoms to disappear promptly. Immediate anaphylactic and hypersensitivity reactions are a remote possibility. Epinephrine should be available for treatment of any acute anaphylactoid reaction (See ).
Twenty-one adverse reactions occurred in 341 infusions (6%), when using Gammagard S/D IGIV (5% solution). in a clinical trial of 17 patients with primary immunodeficiency. 11 Of the 17 patients, 12 (71%) were adults, and 5 (29%) were children (16 years or younger).
In a cross-over study comparing Gammagard S/D IGIV and Gammard (5% solutions) conducted in a small number (n=10) of primary immunodeficient patients, no unusual or unexpected adverse reactions were observed in the Gammagard S/D IGIV group. The adverse reactions experienced in the Gammagard S/D IGIV group were similar in frequency and nature to those observed in the control group consisting of patients receiving Gammagard S/D IGIV.
Gammagard S/D IGIV reconstituted to a concentration of 10%, was administered intravenously at rates varying from 2-11 mL/kg/Hr. Systemic reactions occurred in 23 (10.5%) of 219 infusions. This compares with an adverse reaction incidence of 6% (only systemic reactions reported) for primary immunodeficient patients previously treated with a 5% solution at infusion rates varying between 2 and 8 mL/kg/Hr, as described above (also, see reference 11 ). Local pain or irritation was experienced during 35 (16%) of 219 infusions. Application of a warm compress to the infusion site alleviated local symptoms.
These local reactions tended to be associated with hand vein infusions and their incidence may be reduced by infusions via the antecubital vein.
In the study of patients with B-cell Chronic Lymphocytic Leukemia, the incidence of adverse reactions associated with Gammagard S/D IGIV infusions was approximately 1.3% while that associated with placebo (normal saline) infusions was 0.6%. 9
During the clinical study of Gammagard S/D IGIV for the treatment of Idiopathic Thrombocytopenic Purpura, the only adverse reaction reported was headache which occurred in 12 of 16 patients (75%). Of these 12 patients, 11 had chronic ITP (9 adults, 2 children), and one child had acute ITP. Oral antihistamines and analgesics alleviated the symptoms and were used as pretreatment for those patients requiring additional IGIV therapy. The remaining four patients did not report any side effects and did not require pretreatment.
In a study of patients (n=51) with Kawasaki syndrome, no hypersensitivity type reactions (urticaria, bronchospasm or generalized anaphylaxis) were reported in patients receiving either a single 1 g/kg dose of IGIV. Gammagard S/D IGIV , or 400 mg/kg of IGIV, Gammagard S/D IGIV , for four consecutive days. 12 mild adverse reactions, including chills, flushing, cramping, headache, hypotension, nausea, rash, and wheezing, were reported with both dose regimens. These adverse reactions occurred in 7/51 (13.7%) patients and in association with 7/129 (5.4%) infusions. Of the 25 patients who received a single 1g/kg dose, four patients experienced adverse reactions for an incidence of 16%. Of the 26 patients who received 400 mg/kgday over four days, three experienced a single adverse reaction for an incidence of 11.5%. 3
For patients with primary immunodeficiencies, monthly doses of at least 100 mg/kg are recommended. Initially, patients may receive 200-400 mg/kg. As there are significant differences in the half-life of IgG among patients with primary immunodeficiencies, the frequency and amount of immunoglobulin therapy may vary from patient to patient. The proper amount can be determined by monitoring clinical response. The minimum serum concentration of IgG necessary for protection has not been established.
For patients with hypogammaglobulinemia and/or recurrent bacterial infrections due to B-cell Chronic Lymphocytic Leukemia, a dose of 400 mg/kg every three to four weeks is recommended.
For patients with Kawasaki syndrome, either a single 1 g/kg dose or a dose of 400 mg/kg for four consecutive days beginning within seven days of the onset of fever, administered concomitantly with appropriate aspirin therapy (80-100 mg/kg/day in four divided doses) is recommended.
For patients with acute or chronic Idiopathic Thrombocytopenic Purpura, a dose of 1 g/kg is recommended. The need for additional doses can be determined by clinical response and platelet count. Up to three separate doses may be given on alternate days, if required.
No prospective data are presently available to identify a maximum safe dose, concentration, and rate of infusion in patients determined to be at increased risk of acute renal failure. In the absence of prospective data, the recommended doses should not be exceeded and the concentration and infusion rate selected should be the minimum level practicable. Reduction in dose, concentration, and/or rate of administration in patients at risk of acute renal failure has been proposed in the literature in order to reduce the risk of acute renal failure. 32
When reconstitution is performed aspetically outside of a sterile laminar air flow hood, administration should begin as soon as possible, but not more than two hours after reconstitution.
When reconstitution is performed aseptically in a sterile laminar air flow hood, the reconstituted product may be either maintained in the original glass container or pooled into Viaflex® bags and stored under constant refrigeration (2-8°C), for up to 24 hours. (The data and time of reconstitution/pooling should be recorded). If these conditions are not met, sterility of the reconstituted product cannot be maintained. Partially used vials should be discarded.
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Caution: Failure to use center of stopper may result in dislodging the stopper.
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Note: Invert the diluent bottle with attached transfer device rapidly into the concentrate bottle in order to avoid loss of diluent.
Caution: Failure to use center of stopper may result in dislodging the stopper and loss of vacuum.
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Follow steps 1-4 as previously described in A .
5. To prepare a 10% solution, reconstitute with the appropriate volume of diluent as indicated in Table 2 , which indicates the volume of diluent required for a 5% or 10% concentration. Using aseptic technique, draw required volume into a sterile hypodermic syringe and needle. Discard the filled syringe.
6. Using the residual diluent in the diluent vial, follow steps 5-12 as previously described in A .
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It is recommended that initially a 5% solution be infused at a rate of 0.5 mL/kg/Hr. If infusion at this rate and concentration causes the patient no distress, the administration rate may be gradually increased to a maximum rate of 4 mL/kg/Hr. Patients who tolerate the 5% concentration at 4 mL/kg/Hr can be infused with the 10% concentration starting at 0.5 mL/kg/Hr. If no adverse effects occur, the rate can be increased gradually up to a maximum of 8 mL/kg/Hr.
For patients judged to be at risk for developing renal dysfunction, it may be prudent to reduce the amount of product infused per unit time by infusing Gammagard S/D IGIV at a rate less than 13.3 mg IG/kg/min. (<0.27 mL/kg/min. of 5% or <0.13 mL/kg/min. of 10%).
It is recommended that antecubital veins be used especially for 10% solutions, if possible. This may reduce the likelihood of the patient experiencing discomfort at the infusion site (see Adverse Reactions ).
A rate of administration which is too rapid may cause flushing and changes in pulse rate and blood pressure. Slowing or stopping the infusion usually allows the symptoms to disappear promptly.
Admixtures of Immune Globulin Intravenous (Human), Gammagard S/D , with other drugs and intravenous solutions have not been evaluated. It is recommended that Gammagard S/D IGIV , be administered separately from other drugs or medications which the patient may be receiving. The product should not be mixed with Immune Globulin Intravenous (Human) from other manufacturers.
Antibodies in immune globulin preparations may interfere with patient responses to live vaccines, such as those for measles, mumps, and rubella. The immunizing physician should be informed of recent therapy with Immune Globulin Intravenous (Human) so that appropriate precautions can be taken.
Gammagard S/D IGIV should be administered as soon after reconstitution as possible or as described in the Dosage and Administration section. The reconstituted material should be at room temperature during administration. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. Do not use if particulate matter and/or discoloration is observed.
Follow directions for use which accompany the administration set provided. If another administration set is used, ensure that the set contains a similar filter.
Gammagard S/D IGIV is supplied in 0.5 g, 2.5 g, 5 g, or 10 g single use bottles. Each bottle of Gammagard S/D IGIV is furnished with a suitable volume of Sterile Water for Injection, USP, a transfer device and an administration set which contains an integral airway and a 15 micron filter.
Gammagard S/D IGIV , is to be stored at a temperature not to exceed 25°C (77°F). Freezing should be avoided to prevent the diluent bottle from breaking.
Bussel JB, Kimberly RP, Inman RD, et al : Intravenous gammaglobulin treatment of chronic idiopathic thrombocytopenic purpura. Blood 62 :480-486, 1983
* Manufactured Under U.S. Patent No. 4,439,421.
Baxter Healthcare Corporation
Hyland Division
Glendale, CA 91203 USA
U.S. License No. 140 Revised May 1999
30-5K-03-120
© Copyright 1999-2000, Baxter Healthcare Corporation, All Rights Reserved.