DrugLib.com — Drug Information Portal

Rx drug information, pharmaceutical research, clinical trials, news, and more

Prolastin (Alpha 1-Antitrypsin) - Summary

 
 



PROLASTIN SUMMARY

Alpha1-Proteinase Inhibitor (Human), Prolastin® is a sterile, stable, lyophilized preparation of purified human Alpha1-Proteinase Inhibitor (alpha1-PI), also known as alpha1-antitrypsin. Prolastin is intended for use in therapy of congenital alpha1-antitrypsin deficiency.

Alpha1-Proteinase Inhibitor (Human), Prolastin® is indicated for chronic replacement therapy of individuals having congenital deficiency of alpha1-PI (alpha1-antitrypsin deficiency) with clinically demonstrable panacinar emphysema. Clinical and biochemical studies have demonstrated that with such therapy, it is possible to increase plasma levels of alpha1-PI, and that levels of functionally active alpha1-PI in the lung epithelial lining fluid are increased proportionately. 18-20 As some individuals with alpha1-antitrypsin deficiency will not go on to develop panacinar emphysema, only those with evidence of such disease should be considered for chronic replacement therapy with Prolastin. 22 Subjects with the PiMZ or PiMS phenotypes of alpha1-antitrypsin deficiency should not be considered for such treatment as they appear to be at small risk for panacinar emphysema. 22 Clinical data are not available as to the long-term effects derived from chronic replacement therapy of individuals with alpha1-antitrypsin deficiency with Prolastin. Only adult subjects have received Prolastin to date.

Prolastin is not indicated for use in patients other than those with PiZZ, PiZ(null) or Pi(null)(null) phenotypes.


See all Prolastin indications & dosage >>

NEWS HIGHLIGHTS

Published Studies Related to Prolastin (Alpha 1-Antitrypsin)

The fibrinogen cleavage product Aalpha-Val360, a specific marker of neutrophil elastase activity in vivo. [2011.08]
BACKGROUND: Alpha-1-antitrypsin (A1AT) deficiency is the only recognised genetic risk factor for chronic obstructive pulmonary disease (COPD), a leading cause of morbidity and mortality worldwide. Since A1AT is the major inhibitor of neutrophil elastase (NE), this enzyme has become widely implicated in the pathogenesis of COPD in general; however, there is currently no specific biomarker for its pre-inhibition activity. Such a biomarker should be a measure of elastase-specific COPD disease activity with the potential to assess early targeted therapeutic intervention, in contrast to traditional and non-specific disease severity markers such as forced expiratory volume in 1 s... CONCLUSIONS: Aalpha-Val(360) represents the first specific footprint of pre-inhibition NE activity and is a potential biomarker of disease activity and progression in subjects with elastase-dependent COPD. TRIAL REGISTRATION: The EXACTLE study was registered in ClinicalTrials.gov as 'Antitrypsin (AAT) to Treat Emphysema in AAT-Deficient Patients'; ClinicalTrials.gov Identifier: NCT00263887.

Retinoid treatment of Emphysema in Patients on the Alpha-1 International Registry. The REPAIR study: study design, methodology and quality control of study assessments. [2010.12]
Emphysema is characterized by the destruction of alveolar wall and enlargement of alveolar airspaces, resulting in a reduction of the total lung gas exchange area, loss of lung elastic recoil and hyperinflation. The REPAIR study (Retinoid treatment of Emphysema in Patients on the Alpha-1 International Registry) is the first proof-of-concept study of a new potential disease-modifying drug, Palovarotene(c), an orally active, gamma selective retinoid agonist in patients with emphysema secondary to alpha-1-antitrypsin deficiency (AATD) as a model population for the general smoke-induced emphysema population.

Pharmacokinetic comparability of Prolastin(R)-C to Prolastin(R) in alpha-antitrypsin deficiency: a randomized study. [2010.09.30]
BACKGROUND: Alpha1-antitrypsin (AAT) deficiency is characterized by low blood levels of alpha1-proteinase inhibitor (alpha-PI) and may lead to emphysema. Alpha-PI protects pulmonary tissue from damage caused by the action of proteolytic enzymes. Augmentation therapy with Prolastin(R) (Alpha-Proteinase Inhibitor [Human]) to increase the levels of alpha-PI has been used to treat individuals with AAT deficiency for over 20 years. Modifications to the Prolastin manufacturing process, incorporating additional purification and pathogen-reduction steps, have led to the development of an alpha-PI product, designated Prolastin(R)-C (Alpha-Proteinase inhibitor [Human]). The pharmacokinetic comparability of Prolastin-C to Prolastin was assessed in subjects with AAT deficiency... CONCLUSION: Prolastin-C demonstrated pharmacokinetic equivalence and a comparable safety profile to Prolastin. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT00295061.

Exploring the role of CT densitometry: a randomised study of augmentation therapy in alpha1-antitrypsin deficiency. [2009.06]
Assessment of emphysema-modifying therapy is difficult, but newer outcome measures offer advantages over traditional methods. The EXAcerbations and Computed Tomography scan as Lung End-points (EXACTLE) trial explored the use of computed tomography (CT) densitometry and exacerbations for the assessment of the therapeutic effect of augmentation therapy in subjects with alpha(1)-antitrypsin (alpha(1)-AT) deficiency...

Prevalence of alpha-1 antitrypsin deficiency in poorly controlled asthma--results from the ALA-ACRC low-dose theophylline trial. [2007.10]
In a study comparing low-dose theophylline to montelukast in poorly controlled asthmatics, 285 subjects consented to be screened for alpha-1 antitrypsin deficiency. Of the 284 for which complete data was available, 10.5% carried a deficiency gene and 2.4% were mildly deficient with an alpha-1 antitrypsin serum level of less than 20 mu M...

more studies >>

Clinical Trials Related to Prolastin (Alpha 1-Antitrypsin)

Effect of Double Dose of Alpha 1-antitrypsin Augmentation Therapy on Lung Inflammation. [Recruiting]
The current treatment of individuals with alpha-1 antitrypsin deficiency (AATD) who develop lung disease (COPD) is the administration of intravenous purified alpha-1 antitrypsin (augmentation therapy) at a fixed dose of 60 mg/kg per week. This dose increases serum levels just above a predetermined "safety threshold" of 11 uM. However, normal levels of AAT are around 36 uM. AAT has shown not only to inhibit lung proteases such as neutrophil elastase, but also to modulate inflammation.

Given that many subjects with AATD who receive augmentation therapy still have significant lung disease and inflammation, this study will evaluate whether doubling the dose to 120 mg/kg/week has an effect in decreasing lung inflammation.

Only the dosing of 60 mg/kg /week has received FDA approval. FDA has granted an IND number to this study to test the higher dose of 120 mg/kg/week.

The study will evaluate systemic (serum) and pulmonary (bronchoscopy samples)markers of inflammation in 3 phases: standard dose (4 weeks), double dose (4 weeks) and standard dose (4 weeks).

A Research Trial of Aralast in New Onset Diabetes (RETAIN) - Part II [Not yet recruiting]
The drug Alpha-1 Antitrypsin (AAT, Aralast NP), which is being tested in this clinical trial, is an anti-inflammatory drug that affects the cells that are thought to be involved in the development of type 1 diabetes. This trial, known as RETAIN, is a clinical trial is a two-part trial investigating the effect of intravenous Alpha-1 Antitrypsin(AAT, Aralast NP) on preserving beta cell function and to determine if AAT will help slow the progression of type 1 diabetes.

Part I of this trial (NCT#) is an open-label, safety and dose level study consisting of two groups. After Part I is completed, including a satisfactory safety review, enrollment in Part II will begin. Part II is a two-arm, double-blind, placebo-controlled clinical trial, and participants will be randomly assigned to either the treatment or placebo group.

The Effects of Alpha-1 Antitrypsin (AAT) on the Progression of Type 1 Diabetes [Recruiting]
The purpose of this study is to determine if the drug Alpha-1 Antitrypsin (AAT, Aralast NP) will preserve beta-cell function and help slow the progression of type 1 diabetes.

International Study Evaluating the Safety and Efficacy of Inhaled, Human, Alpha-1 Antitrypsin (AAT) in Alpha-1 Antitrypsin Deficient Patients With Emphysema [Recruiting]
This is a randomised , placebo controlled, double blind , multicentre, Phase II/III study evaluating the safety and efficacy of Kamada AAT for inhalation in patients with Emphysema caused by Alpha-1 Antitrypsin (AAT) deficiency.

A Research Trial of Aralast in New Onset Diabetes (RETAIN) - Part I [Not yet recruiting]
The drug Alpha-1 Antitrypsin (AAT, Aralast NP), which is being tested in this clinical trial,is an anti-inflammatory drug that affects the cells that are thought to be involved in the development of type 1 diabetes. This trial, known as RETAIN, is a two-part trial to investigate the effect of intravenous Alpha-1 Antitrypsin(AAT, Aralast NP) on preserving beta cell function and to determine if AAT will help slow the progression of type 1 diabetes.

Part I of this clinical trial is an open-label, safety and dose level study consisting of two groups. In Part I, all participants will receive the experimental drug and will be tested to see if the drug is safe and well tolerated. Two groups of participants with new-onset type 1 diabetes will be enrolled. After participants have completed the trial and a satisfactory safety review is completed, enrollment in Part II (NCT#) of the study will begin.

more trials >>

Reports of Suspected Prolastin (Alpha 1-Antitrypsin) Side Effects

Chills (2)Anaphylactic Shock (2)Influenza Like Illness (2)Malaise (2)Infusion Related Reaction (2)Drug Hypersensitivity (2)Dermatitis Allergic (1)Hypersensitivity (1)Nasopharyngitis (1)Urticaria (1)more >>


Page last updated: 2011-12-09

-- advertisement -- The American Red Cross
 
Home | About Us | Contact Us | Site usage policy | Privacy policy

All Rights reserved - Copyright DrugLib.com, 2006-2012