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Long Term Impact of Rapid Intravenous Infusion of Velaglucerase Alfa (VPRIV)

2019-10-15 11:11:11 | BioPortfolio

Summary

Background: In order to allow our satisfied patients, who have successfully completed 24 months of rapid intravenous infusion of Velaglucerase alfa (VPRIV), to continue with the 10 minutes IV therapy, the clinical trial framework must be extended; and this extension is important for the assessment of long term benefit (up to 5 years) of this regimen of administration of Velaglucerase alfa..

Suggested trial: An additional 36 months home therapy follow up of safety and efficacy of rapid intravenous infusion of Velaglucerase alfa (VPRIV) in adult patients with type 1 Gaucher disease.

Patients must have completed the prior 4 parts / 24 months of the protocol before enrolling into this extension phase ("Part 5") and have provided a new consent before entering PART 5 of the study.

Patients must not have experienced clinically significant AEs, including allergic reactions, in any of the prior study parts of this protocol to be eligible to participate, and have maintained stability in the key disease features.

All infusions of 10' will be given in the context of home therapy. "Clinically significant" AEs will be determined by the PI using standard description of AEs as previously described at phase 3, and if necessary will support withdrawal of the patient from the study.

Description

Every 6 months, patients will be required to come for routine checkups at SZMC, where the following tests will be performed:

- Complete Blood Count (CBC)

- Routine serum biochemistry including liver function tests (LFTs)

- Plasma biomarker lyso Gb-1

- Height & weight & calculation of BMI

- Physical examination and medical history elicited including concomitant medications

- Ultrasound for spleen and liver volumes

In addition, the following tests will be performed at 12, 24 and 36 months:

- Echocardiography

- Electrocardiogram (ECG)

- Urinalysis

- HRQoL questionnaire (TBD)

At each home visit, the following assessments will be performed by the study nurse:

Queries regarding AEs and changes in clinically relevant Gaucher parameters as described by the patient (e.g., bone pain), inter-current illnesses, etc.

Patients will be required to complete the End-of-study visit, including the final infusion at 10', at SZMC. This final visit will include in addition to the usual safety and efficacy assessments and routine tests, (mentioned above) also, DEXA and anti-drug antibodies.

In addition, we would perform a 4th PK measurement at end of the extension period.

Study Design

Conditions

Gaucher Disease, Type 1

Intervention

VPRIV

Status

Active, not recruiting

Source

Shaare Zedek Medical Center

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-10-15T11:11:11-0400

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Medical and Biotech [MESH] Definitions

An autosomal recessive disorder caused by a deficiency of acid beta-glucosidase (GLUCOSYLCERAMIDASE) leading to intralysosomal accumulation of glycosylceramide mainly in cells of the MONONUCLEAR PHAGOCYTE SYSTEM. The characteristic Gaucher cells, glycosphingolipid-filled HISTIOCYTES, displace normal cells in BONE MARROW and visceral organs causing skeletal deterioration, hepatosplenomegaly, and organ dysfunction. There are several subtypes based on the presence and severity of neurological involvement.

A glycosidase that hydrolyzes a glucosylceramide to yield free ceramide plus glucose. Deficiency of this enzyme leads to abnormally high concentrations of glucosylceramide in the brain in GAUCHER DISEASE. EC 3.2.1.45.

Cerebrosides which contain as their polar head group a glucose moiety bound in glycosidic linkage to the hydroxyl group of ceramides. Their accumulation in tissue, due to a defect in beta-glucosidase, is the cause of Gaucher's disease.

A group of recessively inherited diseases that feature progressive muscular atrophy and hypotonia. They are classified as type I (Werdnig-Hoffman disease), type II (intermediate form), and type III (Kugelberg-Welander disease). Type I is fatal in infancy, type II has a late infantile onset and is associated with survival into the second or third decade. Type III has its onset in childhood, and is slowly progressive. (J Med Genet 1996 Apr:33(4):281-3)

Therapeutic replacement or supplementation of defective or missing enzymes to alleviate the effects of the enzyme deficiency (e.g., GLUCOSYLCERAMIDASE replacement for GAUCHER DISEASE).

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