velaglucerase alfa

velaglucerase alfa

(vel-a-gloo-ser-ase al-fa) ,

VPRIV

(trade name)

Classification

Therapeutic: replacement enzyme
Pharmacologic: enzymes
Pregnancy Category: B

Indications

Enzyme replacement therapy (ERT) for pediatric and adult patients with type 1 Gaucher disease.

Action

Prevents the accumulation of glucocerebrosides in cells. Replaces glucocerebrosidases that are deficient in type 1 Gaucher’s disease. Replaces the deficient enzyme in type 1 Gaucher disease.

Therapeutic effects

Improvement in symptoms of Gaucher’s disease (anemia, thrombocytopenia, bone disease, splenomegaly, and hepatomegaly).

Pharmacokinetics

Absorption: IV administration results in complete bioavailability.
Distribution: Unknown.
Metabolism and Excretion: Unknown.
Half-life: 11–12 min.

Time/action profile

ROUTEONSETPEAKDURATION
IVunknownunknownunknown

Contraindications/Precautions

Contraindicated in: None noted.
Use Cautiously in: Previous hypersensitivity reactions; pretreament required; Geriatric: consider concurrent disease states and drug therapy; Obstetric: Use during pregnancy only if clearly needed; Lactation: Use catiously if breast-feeding; Pediatric: Safe and effective use in children <4 yr not established.

Adverse Reactions/Side Effects

Central nervous system

  • dizziness (most frequent)
  • fatigue (most frequent)
  • headache
  • weakness (most frequent)

Cardiovascular

  • hypertension
  • hypotension

Gastrointestinal

  • abdominal pain (most frequent)
  • nausea (most frequent)

Dermatologic

  • rash (↑ in children) (most frequent)
  • flushing
  • urticaria

Hematologic

  • ↑ aPTT(↑ in children) (most frequent)

Musculoskeletal

  • back pain (most frequent)
  • joint pain (most frequent)
  • bone pain

Miscellaneous

  • hypersensitivity reactions including anaphylaxis (life-threatening)
  • fever (↑ in children) (most frequent)
  • infusion-related reactions (most frequent)

Interactions

Drug-Drug interaction

None noted.

Route/Dosage

Oral (Adults) 60 Units/kg every other week.

Availability

Lyophilized powder for IV injection (requires reconstitution and dilution): 200 Units/vial, 400 Units/vial

Nursing implications

Nursing assessment

  • Monitor for an improvement in symptoms including hepatomegaly, splenomegaly, anemia, thrombocytopenia, bone demineralization, and ↑ appetite and energy level periodically during therapy.
  • Monitor patient for signs of hypersensitivity reactions (pruritus, flushing, urticaria, angioedema, chest pain, dyspnea, hypotension). Pretreatment with antihistamines and decreasing rate of infusion usually allows patient to continue use.
  • Monitor for signs and symptoms of infusion-related reactions (headache, dizziness, hypotension, hypertension, nausea, fatigue, pyrexia). Most reactions are mild, occur within the 1st 6 mo of therapy, and diminish with time. May be treated with slowing infusion rate, antihistamines, antipyretics, corticosteroids, and/or stopping infusion and resuming with ↑ infusion time.
  • Lab Test Considerations: Monitor hemoglobin and platelet count monthly to determine effectiveness of therapy.
    • May cause prolonged activated partial thromboplastin time.

Potential Nursing Diagnoses

Fatigue (Indications)
Risk for injury (Indications)

Implementation

  • Patients currently treated with imiglucerase may switch to velaglucerase. If on a stable imiglucerase dose, begin treatment with velaglucerase at the same dose.
  • Pre-treatment with antihistamines, and/or corticosteroids may prevent subsequent infusion-related reactions.
  • Determine correct amount of velaglucerase and appropriate number of vials. Reconstitute each 200 unit vial with 2.2 mL and each 400 unit vial with 4.3 mL of Sterile Water for Injection. Mix vials gently; do not shake. Solution is clear to slightly opalescent and colorless; do not administer solutions that are discolored or contain particulate matter. Concentration: 100 Units/mL. Withdraw 2 mL from each 200 Unit vial and 4 mL from each 400 Unit vial. Diluent: Dilute total volume in 100 mL of 0.9% NaCl. Administer within 24 hrs of reconstitution. Do not freeze; protect from light.
  • Rate: Infuse diluted solution over 1 hr through an in-line low protein-binding 0.2 mcg filter.
  • Additive Incompatibility: Do not infuse with other solutions or products.

Patient/Family Teaching

  • Inform patient of the purpose of this medication and the importance of treatment at least every 4 wk. Velaglucerase helps control the symptoms but does not cure Gaucher’s disease. Lifelong therapy may be required.
  • Advise female patient to notify health care professional if pregnancy is planned or suspected or if breastfeeding.
  • Emphasize the importance of follow-up examinations and lab tests.

Evaluation/Desired Outcomes

  • Increasing hemoglobin and platelet counts and decreasing acid phosphatase levels, hepatomegaly, and splenomegaly. In pediatric patients, cachexia and wasting should diminish.
References in periodicals archive ?
Contract notice: Supply of exclusive medicines: Velaglucerase alfa 400 iu (vial), Destined for the health service of the principality of asturias
Shire, a United States-based specialty biopharmaceutical company, has received approval for the production of VPRIV drug substance (velaglucerase alfa for injection) at its manufacturing facility in Lexington, Massachusetts, from the US Food and Drug Administration, it was reported yesterday.
The three endocrine products are carglumic acid (Carbaglu; C) for treatment of hyperammonemia due to the deficiency of the hepatic enzyme N-acetylglutamate synthase (NAGS); tesamorelin (Egrifta; X) a growth hormone--releasing factor analog for reduction of excess abdominal fat in HIV-infected patients; and velaglucerase alfa (VPRIV; B) given for long-term enzyme replacement in patients with Gaucher disease.
The Food and Drug Administration is already scheduled to make a regulatory decision about the drug candidate, velaglucerase alfa, by Feb.
Medication velaglucerase alfa, romiplostim, plerixafor purchase of HD and HD annex 1 below.
1 September 2011 - UK-based biopharmaceutical company Shire plc (LON:SHP) reported yesterday positive results from several trials, evaluating the safety of switching to REPLAGAL from Fabrazyme and the long-term safety and benefits of switching to VPRIV (velaglucerase alfa) from Cerezyme.
Shire achieved positive results from its first Phase III study (TKT032) evaluating the safety and efficacy of velaglucerase alfa, an investigational enzyme replacement therapy for the treatment of Type 1 Gaucher disease.
26 March 2010 - UK-based biopharmaceutical company Shire plc (LON: SHP) announced yesterday positive data from a Phase III clinical trial (TKT-034) designed to evaluate the safety of switching to VPRIV (velaglucerase alfa for injection), from imiglucerase, as well as an interim analysis of safety data from an ongoing multicenter open-label treatment protocol (HGT-GCB-058) implemented to provide VPRIV to patients affected by the continuing shortage of imiglucerase.
Contract notice: Medication velaglucerase alfa (a16ab10), romiplostim (b02bx04) and plerixafor (l03ax16) purchase.
1 March 2010 - UK specialty biopharmaceutical company Shire plc (LON: SHP) said on Friday that the US Food and Drug Administration (FDA) has approved VPRIV (velaglucerase alfa for injection), a human cell line derived enzyme replacement therapy (ERT) for the long-term treatment of Type 1 Gaucher disease in pediatric and adult patients.
Contract notice: Velaglucerase alfa (a16ab10), romiplostim (b02bx04) and plerixafor (l03ax16).