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Medically reviewed by Kovalenko Svetlana Olegovna, PharmD. Last updated on 30.03.2022
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Qigris ® is indicated for the reduction of mortality in adult patients with severe sepsis (sepsis associated with acute organ dysfunction) who have a high risk of death (e.g., as determined by APACHE II score ≥ 25).
Limitations of use:
Qigris is not indicated in adult patients with severe sepsis and a lower risk of death (e.g., APACHE II score < 25).
Qigris is not indicated in pediatric patients.
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Recommended Dosing and Administration Overview
Qigris should be administered intravenously at an infusion rate of 24 mcg/kg/hr (based on actual body weight) for a total duration of infusion of 96 hours. Dose adjustment based on clinical or laboratory measurements is not recommended. Dose escalation or bolus doses of Qigris are not recommended.
If the infusion is interrupted, Qigris should be restarted at the 24 mcg/kg/hr infusion rate.
In the event of clinically important bleeding, immediately stop the infusion.
Qigris should be administered via a dedicated intravenous line or a dedicated lumen of a multilumen venous catheter. The ONLY other solutions that can be administered through the same line are 0.9% Sodium Chloride Injection, USP; Lactated Ringer's Injection, USP; Dextrose Injection, USP; and Dextrose and Sodium Chloride Injection, USP.
Avoid exposing Qigris solutions to heat and/or direct sunlight. Studies conducted at the recommended concentrations indicate the Qigris intravenous solution to be compatible with glass infusion bottles, and infusion bags and syringes made of polyvinylchloride, polyethylene, polypropylene, or polyolefin.
Preparation of the Concentrated Solution
Note: Reconstitute vials of lyophilized Qigris only with Sterile Water for Injection, USP.
- Use appropriate aseptic technique during the preparation of Qigris for intravenous administration.
- Calculate the approximate amount of Qigris needed based upon the patient's actual body weight and duration of infusion period. The maximum duration of infusion from one infusion bag or syringe is 12 hours. Multiple infusion periods will be needed to cover the entire 96-hour duration of administration.
mg of Qigris = (patient weight, kg) x (24 mcg/kg/hr) x (hours of infusion) ÷ (1000)
Round the actual amount of Qigris to be prepared to the nearest 5 mg increment to avoid discarding reconstituted Qigris. - Determine the number of vials of Qigris needed to make up this amount.
- Reconstitute each vial of Qigris only with Sterile Water for Injection, USP. The 5 mg vials must be reconstituted with 2.5 mL. The 20 mg vials must be reconstituted with 10 mL. Slowly add the Sterile Water for Injection, USP to the vial and avoid inverting or shaking the vial. Gently swirl each vial until the powder is completely dissolved. The resulting Qigris concentration of the solution is 2 mg/mL.
- Qigris contains no antibacterial preservatives; the intravenous solution should be prepared immediately after reconstitution of the Qigris in the vial(s). If the vial of reconstituted Qigris is not used immediately, it may be held at controlled room temperature 20° to 25°C (68° to 77°F), but must be used within 3 hours.
- Inspect the reconstituted Qigris in the vials for particulate matter and discoloration before further dilution. Do not use vials if particulate matter is visible or the solution is discolored.
Dilution and Administration Instructions for an Intravenous Infusion Pump Using an Infusion Bag
Complete “Preparation of Concentrated Solution” steps 1-6 above, then complete the next 7 steps.
- The solution of reconstituted Qigris must be further diluted into an infusion bag containing 0.9% Sodium Chloride Injection, USP to a final concentration of between 0.1 mg/mL and 0.2 mg/mL. Bag volumes between 50 mL and 250 mL are typical.
- Confirm that the intended bag volume will result in an acceptable final concentration.
Final concentration, mg/mL = (actual Qigris amount, mg) ÷ (bag volume, mL)
If the calculated final concentration is not between 0.1 mg/mL and 0.2 mg/mL, select a different bag volume and recalculate the final concentration. - Slowly withdraw the reconstituted Qigris solution from the vial(s) and add the reconstituted Qigris into the infusion bag of 0.9% Sodium Chloride Injection, USP. When injecting the Qigris into the infusion bag, direct the stream to the side of the bag to minimize the agitation of the solution. Gently invert the infusion bag to obtain a homogeneous solution. Do not transport the infusion bag using mechanical transport systems such as pneumatic-tube systems that may cause vigorous agitation of the solution.
- Calculate the actual duration of the infusion period for the diluted Qigris.
Infusion period, hours = (actual Qigris amount, mg) x (1000) ÷ (patient weight, kg) ÷ (24 mcg/kg/hr) - Account for the added volume of reconstituted Qigris (0.5 mL per mg of Qigris used) and the volume of bag saline solution removed (if saline solution is removed prior to adding the reconstituted Qigris ).
Final bag volume, mL = (starting bag volume, mL) + (reconstituted Qigris volume, mL) - [saline volume removed (if any), mL] - Calculate the actual infusion rate of the diluted Qigris.
Infusion rate, mL/hr = (final bag volume, mL) ÷ (infusion period, hours) - After preparation in an infusion bag, the intravenous solution should be used at controlled room temperature 20° to 25°C (68° to 77°F) within 12 hours. If the intravenous solution is not administered immediately, the solution should be refrigerated at 2° to 8°C (36° to 46°F) for up to 12 hours. If the prepared solution is refrigerated prior to administration, the maximum time limit for use of the intravenous solution, including dilution, refrigeration, and administration, is 24 hours.
Dilution and Administration Instructions for a Syringe Pump
Complete “Preparation of Concentrated Solution” steps 1-6 above, then complete the next 7 steps.
- The solution of reconstituted Qigris must be further diluted with 0.9% Sodium Chloride Injection, USP to a final concentration of between 0.1 mg/mL and 0.2 mg/mL.
- Confirm that the intended solution volume will result in an acceptable final concentration.
Final concentration, mg/mL = (actual Qigris amount, mg) ÷ (solution volume, mL)
If the calculated final concentration is not between 0.1 to 0.2 mg/mL, select a different volume and recalculate the final concentration. - Slowly withdraw the reconstituted Qigris solution from the vial(s) into a syringe that will be used in the syringe pump. Into the same syringe, slowly withdraw 0.9% Sodium Chloride Injection, USP to obtain the desired final volume of diluted Qigris. Gently invert and/or rotate the syringe to obtain a homogeneous solution.
- Calculate the actual duration of the infusion period for the diluted Qigris.
Infusion period, hours = (actual Qigris amount, mg) x (1000) ÷ (patient weight, kg) ÷ (24 mcg/kg/hr) - Calculate the actual infusion rate of the diluted Qigris.
Infusion rate, mL/hr = (solution volume, mL) ÷ (infusion period, hours) - When administering Qigris using a syringe pump at low flow rates (less than approximately 5 mL/hr), the infusion set must be primed for approximately 15 minutes at a flow rate of approximately 5 mL/hr.
- After preparation in a syringe, the intravenous solution should be used at controlled room temperature 20° to 25°C (68° to 77°F) within 12 hours. If the intravenous solution is not administered immediately, the solution should be refrigerated at 2° to 8°C (36° to 46°F) for up to 12 hours. If the prepared solution is refrigerated prior to administration, the maximum time limit for use of the intravenous solution, including dilution, refrigeration, and administration, is 24 hours.
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Qigris increases the risk of bleeding. Qigris is contraindicated in the following clinical situations where bleeding could lead to significant morbidity or death:
- Active internal bleeding
- Recent (within 3 months) hemorrhagic stroke
- Recent (within 2 months) intracranial or intraspinal surgery, or severe head trauma
- Trauma with an increased risk of life-threatening bleeding
- Presence of an epidural catheter
- Intracranial neoplasm or mass lesion or evidence of cerebral herniation
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WARNINGS
Included as part of the PRECAUTIONS section.
PRECAUTIONS
Bleeding
Bleeding is the most common serious adverse reaction experienced by patients receiving Qigris. Each patient being considered for therapy with Qigris should be carefully evaluated and anticipated benefits weighed against potential risks associated with therapy.
Certain conditions, many of which led to exclusion from Study 1 , are likely to increase the risk of bleeding with Qigris therapy. For individuals with one or more of the following conditions, the increased risk of bleeding should be carefully considered when deciding whether to use Qigris therapy:
- Concurrent therapeutic dosing of heparin to treat an active thrombotic or embolic event
- Platelet count < 30,000 x 106/L, even if the platelet count is increased after transfusions
- Prothrombin time-INR > 3.0
- Recent (within 6 weeks) gastrointestinal bleeding
- Recent administration (within 3 days) of thrombolytic therapy
- Recent administration (within 7 days) of oral anticoagulants or glycoprotein IIb/IIIa inhibitors
- Recent administration (within 7 days) of aspirin > 650 mg per day or other platelet inhibitors
- Recent (within 3 months) ischemic stroke
- Intracranial arteriovenous malformation or aneurysm
- Known bleeding diathesis
- Chronic severe hepatic disease
- Any other condition in which bleeding constitutes a significant hazard or would be particularly difficult to manage because of its location
Should clinically important bleeding occur, immediately stop the infusion of Qigris. Continued use of other agents affecting the coagulation system should be carefully assessed. Once adequate hemostasis has been achieved, continued use of Qigris may be reconsidered.
Mortality in Patients with Single Organ Dysfunction and Recent Surgery
In Study 1, among the small number of patients with single organ dysfunction and recent surgery (surgery within 30 days prior to study treatment), all-cause mortality was numerically higher in the Qigris group (28-day: 10/49; in-hospital: 14/48) compared with the placebo group (28-day: 8/49; in-hospital: 8/47).
In an analysis of the subset of patients with single organ dysfunction and recent surgery from Study 2, which enrolled septic patients not at high risk of death, all-cause mortality was also higher in the Qigris group (28-day: 67/323; in-hospital: 76/325) compared with the placebo group (28-day: 44/313; in-hospital: 62/314). Single organ dysfunction patients with recent surgery may not be at high risk of death irrespective of APACHE II score. Therefore, these patients may not be among the indicated population.
Patients on Prophylactic Heparin when Qigris is Initiated
Clinicians should consider continuing heparin for venous thromboembolism (VTE) prophylaxis when initiating Qigris , unless discontinuation is medically necessary. In a randomized study of prophylactic heparin versus placebo in 1935 adult severe sepsis patients treated with Qigris , mortality and the rate of serious adverse events were increased in the subgroup of 434 patients whose heparin was stopped on study entry by randomization to placebo-plus-Qigris. This finding was based on prospectively defined exploratory subgroup analyses; however, the explanation for the finding is unclear. The safety of prophylactic heparin when concomitantly administered with Qigris in adult patients with severe sepsis was evaluated with low molecular weight heparin enoxaparin (40 mg every 24 hours) and unfractionated sodium heparin (5000 U every12 hours), but was not evaluated with unfractionated sodium heparin 5000 U when dosed every 8 hours.
Invasive Procedures
Invasive procedures increase the risk for bleeding with Qigris. Such procedures, including arterial and central venous punctures, should be minimized during the Qigris infusion. Puncture of a noncompressible site should be avoided during the infusion. Qigris should be discontinued 2 hours prior to undergoing an invasive surgical procedure or procedures with an inherent risk of bleeding. Once adequate hemostasis has been achieved, Qigris may be restarted 12 hours after surgery and major invasive procedures or immediately after uncomplicated less invasive procedures.
Laboratory Tests for Coagulopathy
Most patients with severe sepsis have a coagulopathy that is commonly associated with prolongation of the activated partial thromboplastin time (APTT) and the prothrombin time (PT). The activated partial thromboplastin time (APTT) cannot be reliably used to assess the degree of the coagulopathy during Qigris infusion since Xigris variably prolongs the APTT.
The prothrombin time (PT) may be used to monitor the degree of the coagulopathy in patients treated with Qigris because Qigris has minimal effect on the PT.
Drotrecogin alfa (activated) present in plasma samples may interfere with one-stage coagulation assays based on the APTT (such as factor VIII, IX, and XI assays). This interference will result in a measured factor concentration that is lower than the actual concentration. Drotrecogin alfa (activated) present in plasma samples does not interfere with one-stage factor assays based on the PT (such as factor II, V, VII, and X assays).
Nonclinical Toxicology
Carcinogenesis, Mutagenesis, Impairment of Fertility
Long-term studies in animals to evaluate potential carcinogenicity of Qigris have not been performed. Qigris was not mutagenic in an in vivo micronucleus study in mice or in an in vitro chromosomal aberration study in human peripheral blood lymphocytes with or without rat liver metabolic activation.
The potential of Qigris to impair fertility has not been evaluated in male or female animals.
Use In Specific Populations
Pregnancy
Pregnancy Category C — Animal reproduction studies have not been conducted with Qigris. It is also not known whether Qigris can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. In published case reports, there were no major malformations or other adverse outcomes reported following treatment with Qigris during pregnancy. Due to the limited number of exposed pregnancies, these postmarketing data do not reliably estimate the frequency or absence of adverse outcomes. Qigris should be given to a pregnant woman only if clearly needed.
Nursing Mothers
It is not known whether drotrecogin alfa (activated) is excreted in human milk or absorbed systemically after ingestion. Because many drugs are excreted in human milk, and because of the potential for serious adverse reactions in nursing infants from Qigris , a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.
Pediatric Use
A placebo-controlled trial in pediatric patients (Study 3) did not establish safety and effectiveness of Qigris in the pediatric patient population.
Geriatric Use
In Study 1, which evaluated 1690 patients with severe sepsis, 48 percent were 65 years and over, while 23 percent were 75 and over. No overall difference in safety was observed between these patients and younger patients. Reduction in mortality was observed in both geriatric and younger patients.
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Bleeding is the most commonly reported adverse reaction in patients receiving Xigris therapy. Patients administered Qigris as treatment for severe sepsis experience many events which are potential sequelae of severe sepsis and may or may not be attributable to Qigris therapy. In severe sepsis clinical trials, there were no types of non-bleeding adverse events suggesting a causal association with Qigris.
Clinical Trial Experience
The data below describe the population of 8639 adult severe sepsis patients exposed to study drug (6506 Qigris and 2133 placebo) in 2 placebo-controlled and 2 open-label studies of Qigris. The population was 18-99 years of age, of whom 42% were female and 58% were male. The ethnic/racial origin of these patients was the following: Caucasian 79.5%, African descent 5.8%, Hispanic 5.3%, East/Southeast Asian 3.4%, and Other origin 6.0%. These studies used the standard dose regimen of 24 mcg/kg/hr for 96 hours total duration of infusion.
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
In Study 1 , serious bleeding events were observed during the 28-day study period in 3.5% of Qigris -treated and 2.0% of placebo-treated patients, respectively. The difference in serious bleeding between Qigris and placebo occurred primarily during the infusion period and is shown in Table 1. Serious bleeding events included any intracranial hemorrhage, any life-threatening or fatal bleed, any bleeding event requiring the administration of ≥ 3 units of packed red blood cells per day for 2 consecutive days or any bleeding event assessed as a serious adverse event.
Table 1: Number of Patients Experiencing a Serious Bleeding Event by Site of Hemorrhage During the Study Drug Infusion Perioda in Study 1
Xigris N=850 | Placebo N=840 | |
Total | 20 (2.4%) | 8 (1.0%) |
Site of Hemorrhage | ||
Gastrointestinal | 5 | 4 |
Intra-abdominal | 2 | 3 |
Intra-thoracic | 4 | 0 |
Retroperitoneal | 3 | 0 |
Intracranial | 2 | 0 |
Genitourinary | 2 | 0 |
Skin/soft tissue | 1 | 0 |
Otherb | 1 | 1 |
a Study drug infusion period is defined as the date of initiation of study drug to the date of study drug discontinuation plus the next calendar day. b Patients requiring the administration of ≥ 3 units of packed red blood cells per day for 2 consecutive days without an identified site of bleeding. |
In Study 1, two cases of intracranial hemorrhage (ICH) occurred during the infusion period for Qigris -treated patients and no cases were reported in the placebo patients. The incidence of ICH during the 28-day study period was 0.2% for Qigris -treated patients and 0.1% for placebo-treated patients. ICH has been reported in patients receiving Qigris in non-placebo controlled trials with an incidence of approximately 1% during the infusion period. The risk of ICH may be increased in patients with risk factors for bleeding such as severe coagulopathy and severe thrombocytopenia.
In Study 1, 25% of the Qigris -treated patients and 18% of the placebo-treated patients experienced at least one bleeding event during the 28-day study period. In both treatment groups, the majority of bleeding events were ecchymoses or gastrointestinal tract bleeding.
Additional information on adverse events has been obtained in the controlled study of patients not at a high risk of death (Study 2) and an open label, uncontrolled study of 2378 adult patients with severe sepsis that enrolled both patients at high risk of death and not at high risk of death. The incidence rates and nature of treatment-associated adverse events in Study 2 were generally similar to that seen on Study 1. In the open label, uncontrolled study, serious bleeding occurred in 3.6% of patients during the infusion period, and 6.5% during the 28 day study period. Intracranial hemorrhage occurred among 0.6% of patients during the infusion period and 1.5% within 28 days. Most of the post-infusion ICH events occurred within 1 week of the Qigris infusion; the relationship of these events to Qigris is uncertain.
In Study 4 , a randomized trial of prophylactic heparin versus placebo in Qigris -treated severe sepsis patients, rates of serious bleeding, including ICH, were consistent with rates observed in previous studies. Prophylactic heparin did not increase the risk of serious bleeding, including ICH, in patients receiving Qigris. Non-serious bleeding was increased in patients receiving prophylactic heparin compared with placebo over the treatment period of 0-6 days (see Table 2).
Table 2: Bleeding Event Rates in Study 4
Heparin-plus-Xigris N=976 | Placebo-plus-Xigris N=959 | |
Serious Bleeding Eventsa (%) | ||
Days 0-6 | 22 (2.3%) | 24 (2.5%) |
Days 0-28 | 38 (3.9%) | 50 (5.2%) |
ICHb (%) | ||
Days 0-28 | 10 (1.0%) | 7 (0.7%) |
Overall Bleeding (Serious and Non-serious) Events (%) | ||
Days 0-6 | 105 (10.8%) | 78 (8.1%) |
Days 0-28 | 121 (12.4%) | 105 (10.9%) |
a Serious bleeding events included any fatal bleed, any life-threatening bleed, any CNS bleed, or any bleeding event assessed as serious by the investigator. b ICH includes any bleed in the central nervous system, including the following types of hemorrhage — petechial, parenchymal, subarachnoid, subdural, and stroke with hemorrhagic transformation. |
Immunogenicity
As with all therapeutic proteins, there is a potential for immunogenicity.
In severe sepsis clinical studies (Study 1, 2, 4 and the open-label, uncontrolled study), serum samples were collected from 1493 adult patients who received placebo or no study drug and 1855 adult patients who received Qigris for evaluation of anti-human activated protein C IgA/IgG/IgM antibodies with an enzyme-linked immunosorbent assay (ELISA). Plasma samples from patients positive in this detection assay were also tested for their ability to neutralize Qigris activity in an in vitro assay.
In the 4 clinical studies, 1.6% (24/1493) placebo- and 1.5% (27/1855) Qigris -treated patients had negative baseline and positive post-baseline anti-human activated protein C antibodies. Three of the 24 placebo- and 5 of the 27 Qigris -treated patients tested positive for neutralizing IgG antibodies in the in vitro APTT assay. Positive rates were comparable for both anti-human activated protein C and neutralizing antibody between Qigris - and placebo-treated patients by sampling time. No apparent correlation of antibody development to adverse reactions was observed among this limited number of patients. There was no evidence anti-human activated protein C antibodies detected represented a specific immune response to Qigris therapy.
Immunogenicity data are highly dependent on the sensitivity and specificity of the assay. The observed incidence of antibody positivity in an assay may be influenced by several factors including assay design, sample handling, timing of sample collection, concomitant medications, and underlying disease. For these reasons, comparison of the incidence of antibodies to Qigris with the incidence of antibodies to other products may be misleading.
Re-administration — There have been no company-sponsored clinical trials in severe sepsis specifically studying Qigris re-administration. Neither safety nor efficacy has been demonstrated in this use. In Study 2 and Study 4, no hypersensitivity reactions were reported in 10 patients who received a second course of Qigris. Samples available from six adult severe sepsis patients (Study 2) who had received a prior course of Qigris were subsequently tested and all were negative for anti-human activated protein C antibody.
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There is no known antidote for Qigris. In case of overdose, immediately stop the infusion and monitor closely for hemorrhagic complications.
In postmarketing experience there have been a limited number of medication error reports of excessive rate of Qigris infusion for short periods of time (median 2 hours). No unexpected adverse events were observed during the overdose period. However, this information is insufficient to assess whether Qigris overdose is associated with an increased hemorrhage risk beyond that observed with Qigris administered at the recommended dose.
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The specific pharmacologic effects by which Qigris exerts its effect on survival in patients with severe sepsis are not completely understood. In patients with severe sepsis, Qigris infusions of 48 or 96 hours produced dose-dependent declines in D-dimer and IL-6. Compared with placebo, Qigris -treated patients experienced more rapid declines in D-dimer, PAI-1 levels, thrombin-antithrombin levels, prothrombin F1.2, IL-6, more rapid increases in protein C and antithrombin levels, and normalization of plasminogen. As assessed by infusion duration, the maximum observed pharmacodynamic effect of drotrecogin alfa (activated) on D-dimer levels occurred at the end of 96 hours of infusion for the 24 mcg/kg/hr treatment group.
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Drotrecogin alfa (activated) and endogenous activated protein C are inactivated by endogenous plasma protease inhibitors. Plasma concentrations of endogenous activated protein C in healthy subjects and patients with severe sepsis are usually below detection limits.
In patients with severe sepsis, Qigris infusions of 12 mcg/kg/hr to 30 mcg/kg/hr produce steady-state concentrations (Css) that are proportional to infusion rates. In Study 1 , the median clearance of drotrecogin alfa (activated) was 40 L/hr (interquartile range of 27 to 52 L/hr) in adults with severe sepsis. The median Css of 45 ng/mL (interquartile range of 35 to 62 ng/mL) was attained within 2 hours after starting the infusion. In the majority of patients, plasma concentrations of drotrecogin alfa (activated) fell below the assay's quantitation limit of 10 ng/mL within 2 hours after stopping the infusion. Plasma clearance of drotrecogin alfa (activated) in patients with severe sepsis is approximately 50% higher than that in healthy subjects.