Extension Study of Protocol ENB-006-09 - Study of Asfotase Alfa in Children With Hypophosphatasia (HPP)

NCT ID: NCT01203826

Last Updated: 2019-03-13

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

12 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-04-30

Study Completion Date

2016-06-30

Brief Summary

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This clinical trial studies the long term safety and efficacy of asfotase alfa in children with HPP who completed Study ENB-006-09 (NCT00952484).

Detailed Description

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Asfotase alfa was formerly referred to as ENB-0040

Hypophosphatasia (HPP) is a life-threatening, genetic, and ultra-rare metabolic disease characterized by defective bone mineralization and impaired phosphate and calcium regulation that can lead to progressive damage to multiple vital organs, including destruction and deformity of bones, profound muscle weakness, seizures, impaired renal function, and respiratory failure. There are limited data available on the natural course of this disease over time, particularly in patients with the juvenile-onset form.

Conditions

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Hypophosphatasia (HPP)

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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asfotase alfa

asfotase alfa starting dose 3 mg/kg/week SC injection, increased to 6 mg/kg/week SC injection

Group Type EXPERIMENTAL

Asfotase Alfa

Intervention Type BIOLOGICAL

Interventions

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Asfotase Alfa

Intervention Type BIOLOGICAL

Other Intervention Names

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human recombinant tissue nonspecific alkaline phosphatase fusion protein

Eligibility Criteria

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Inclusion Criteria

* Compliant and satisfactory completion of Enobia-sponsored clinical trial ENB-006-09
* Written informed consent by parent or other legal guardian prior to any study procedures being performed
* Parent or other legal guardian willing to comply with study requirements

Exclusion Criteria

* Clinically significant disease that precludes study participation, in the Investigator's opinion
* Treatment with an investigational drug other than asfotase alfa
* Enrollment in any study (other than ENB-006-09) involving an investigational drug, device, or treatment for HPP
* Prior treatment with bisphosphonates
Minimum Eligible Age

5 Years

Maximum Eligible Age

12 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Alexion Pharmaceuticals, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Shriners Hospital for Children

St Louis, Missouri, United States

Site Status

Children's Hospital Health Sciences Centre

Winnipeg, Manitoba, Canada

Site Status

Countries

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United States Canada

References

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Simmons JH, Rush ET, Petryk A, Zhou S, Martos-Moreno GA. Dual X-ray absorptiometry has limited utility in detecting bone pathology in children with hypophosphatasia: A pooled post hoc analysis of asfotase alfa clinical trial data. Bone. 2020 Aug;137:115413. doi: 10.1016/j.bone.2020.115413. Epub 2020 May 14.

Reference Type DERIVED
PMID: 32417537 (View on PubMed)

Whyte MP, Madson KL, Phillips D, Reeves AL, McAlister WH, Yakimoski A, Mack KE, Hamilton K, Kagan K, Fujita KP, Thompson DD, Moseley S, Odrljin T, Rockman-Greenberg C. Asfotase alfa therapy for children with hypophosphatasia. JCI Insight. 2016 Jun 16;1(9):e85971. doi: 10.1172/jci.insight.85971.

Reference Type DERIVED
PMID: 27699270 (View on PubMed)

Related Links

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http://www.hypophosphatasia.com

Hypophosphatasia Website

http://www.hypophosphatasia.com/hcp/

Hypophosphatasia Website for Healthcare Providers

http://www.softbones.org

US Hypophosphatasia Group (Soft Bones)

Other Identifiers

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ENB-008-10

Identifier Type: -

Identifier Source: org_study_id

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