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Safety and Efficacy of Self Administered Injections of Pegvaliase (>40mg/Day Dose) in Adults With PKU

Primary Purpose

Phenylketonuria (PKU)

Status
Completed
Phase
Phase 3
Locations
United States
Study Type
Interventional
Intervention
Pegvaliase
Sponsored by
BioMarin Pharmaceutical
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Phenylketonuria (PKU)

Eligibility Criteria

18 Years - 70 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion criteria:

  • Must be enrolled in PAL-003 or 165-302 Part 4 at the time of screening for 165-304 and most recently receiving pegvaliase at a dose > 40 mg/day.
  • Has identified a competent person or persons ≥ 18 years of age who can observe the subject during study drug administration and for a minimum of 1 hour following administration in situations required per protocol.
  • For females with childbearing potential, must have negative pregnancy test at screening and be willing to have additional pregnancy tests during the study.
  • If sexually active and not planning to become pregnant (self or partner), must be willing to use 2 acceptable methods of contraception while participating in the study and for 4 weeks after the study.
  • Is willing and able to provide written, signed informed consent after the nature of the study has been explained and prior to any research-related procedures; a legally authorized representative may provide written consent and assent may be requested.
  • Is willing and able to comply with all study procedures.
  • Is in generally good health, as evidenced by physical examination and/or clinical laboratory evaluations (hematology, chemistry, and urinalysis).

Exclusion criteria:

  • Use of any investigational product (except pegvaliase) or investigational medical device within 30 days prior to screening or requirement for any investigational agent prior to completion of all scheduled study assessments.
  • Use of any medication (except pegvaliase) intended to treat PKU, including the use of large neutral amino acids, within 2 days prior to the administration of pegvaliase (Day 1).
  • Use or planned use of any injectable drugs containing PEG (other than pegvaliase), including medroxyprogesterone injection, within 3 months prior to screening and during study participation.
  • A history of organ transplantation or on chronic immunosuppressive therapy
  • A history of substance abuse (as defined by the American Psychiatric Association: Diagnostic and Statistical Manual of Mental Disorders [DSM]) in the past 12 months or current alcohol or drug abuse
  • Current participation in the Kuvan® registry study (PKU Demographics, Outcomes and Safety [PKUDOS])
  • Concurrent disease or condition that would interfere with study participation or safety (eg, history or presence of clinically significant cardiovascular, pulmonary, hepatic, renal, hematologic, gastrointestinal, endocrine, immunologic, dermatologic, neurological, oncologic, or psychiatric disease)
  • Any condition that, in the view of the investigator, places the subject at high risk of poor treatment compliance or terminating early from the study

Sites / Locations

  • University of Florida
  • University of South Florida
  • Ann & Robert H. Lurie Children's Hospital of Chicago
  • Indiana CTSI Clinical Research Center
  • University of Kentucky Medical Center
  • Wayne State University, Center for Molecular Medicine and Genetics, Pediatrics and Pathology
  • University of Missouri Health Care
  • Washington University School of Medicine
  • University of Nebraska Medical Center
  • Morristown Medical Center
  • University of Oklahoma Health Science Center
  • Oregon Health and Science University
  • St. Christopher's Hospital for Children
  • UPMC Children's Hospital of Pittsburgh
  • Vanderbilt University Medical Center
  • University of Texas Health Science Center at Houston
  • Medical College of Milwaukee

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Pegvaliase

Arm Description

Beginning on Day 1, subjects will receive the same dose and regimen of pegvaliase they were receiving in 165-302 or PAL-003 (pegvaliase dosing should continue without interruption from the previous study). Subsequent revisions to dosing regimens are allowed following consultation with the medical monitor.

Outcomes

Primary Outcome Measures

Number of Participants With Treatment-emergent Adverse Events (TEAEs) as Assessed by CTCAE v5.0
A treatment-emergent AE was defined as any adverse event (AE) newly appearing or worsened in severity following initiation of study drug until 4 weeks after last dose of pegvaliase
Change in Blood Phe Concentration
Change in blood phenylalanine (Phe) concentration from Parent Study baseline (naïve/pretreatment).

Secondary Outcome Measures

Full Information

First Posted
September 4, 2018
Last Updated
February 16, 2022
Sponsor
BioMarin Pharmaceutical
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1. Study Identification

Unique Protocol Identification Number
NCT03694353
Brief Title
Safety and Efficacy of Self Administered Injections of Pegvaliase (>40mg/Day Dose) in Adults With PKU
Official Title
An Open-label Extension Study to Evaluate the Safety and Efficacy of Subcutaneous Injections of Pegvaliase (> 40 mg/Day Dose) in Adults With Phenylketonuria
Study Type
Interventional

2. Study Status

Record Verification Date
February 2022
Overall Recruitment Status
Completed
Study Start Date
September 13, 2018 (Actual)
Primary Completion Date
January 13, 2021 (Actual)
Study Completion Date
January 13, 2021 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
BioMarin Pharmaceutical

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
This is a Phase 3 open-label extension study enrolling adult patients with PKU who were previously treated with pegvaliase in Studies PAL-003 (NCT00924703) or 165-302 (NCT02468570). The study is designed to evaluate the long-term safety and efficacy of pegvaliase administered at doses > 40 mg/day to 60 mg/day.
Detailed Description
Pegvaliase dosing will continue without interruption from Parent Study 165-302 (NCT02468570) or Parent Study PAL-003 (NCT00924703). Beginning on Day 1, subjects will receive the same dose and regimen of pegvaliase they were receiving in either 165-302 or PAL-003. A subject who reduces to a dose of 40 mg/day or lower for 32 consecutive weeks will be discontinued from study drug and withdrawn from the study as they will have the option to transition to commercial drug. Dose reductions may be performed if warranted due to AEs or hypophenylalaninemia. Dose increases to up to 60 mg/day may be performed per investigator discretion in consultation with the sponsor's medical monitor. Dosing will continue for approximately 121 weeks.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Phenylketonuria (PKU)

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 3
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
N/A
Enrollment
37 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Pegvaliase
Arm Type
Experimental
Arm Description
Beginning on Day 1, subjects will receive the same dose and regimen of pegvaliase they were receiving in 165-302 or PAL-003 (pegvaliase dosing should continue without interruption from the previous study). Subsequent revisions to dosing regimens are allowed following consultation with the medical monitor.
Intervention Type
Drug
Intervention Name(s)
Pegvaliase
Other Intervention Name(s)
rAvPAL-PEG
Intervention Description
40-60mg/day
Primary Outcome Measure Information:
Title
Number of Participants With Treatment-emergent Adverse Events (TEAEs) as Assessed by CTCAE v5.0
Description
A treatment-emergent AE was defined as any adverse event (AE) newly appearing or worsened in severity following initiation of study drug until 4 weeks after last dose of pegvaliase
Time Frame
Up to Day 741 (approximately Week 106)
Title
Change in Blood Phe Concentration
Description
Change in blood phenylalanine (Phe) concentration from Parent Study baseline (naïve/pretreatment).
Time Frame
The Outcome Measure Data Table below uses the 'analysis visit' as defined by the mapping rule in the SAP. The last Phe measurement was mapped to 'analysis visit' week 121. The actual date of the last Phe measurement was day 836 (approximately Week 119).

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
70 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion criteria: Must be enrolled in PAL-003 or 165-302 Part 4 at the time of screening for 165-304 and most recently receiving pegvaliase at a dose > 40 mg/day. Has identified a competent person or persons ≥ 18 years of age who can observe the subject during study drug administration and for a minimum of 1 hour following administration in situations required per protocol. For females with childbearing potential, must have negative pregnancy test at screening and be willing to have additional pregnancy tests during the study. If sexually active and not planning to become pregnant (self or partner), must be willing to use 2 acceptable methods of contraception while participating in the study and for 4 weeks after the study. Is willing and able to provide written, signed informed consent after the nature of the study has been explained and prior to any research-related procedures; a legally authorized representative may provide written consent and assent may be requested. Is willing and able to comply with all study procedures. Is in generally good health, as evidenced by physical examination and/or clinical laboratory evaluations (hematology, chemistry, and urinalysis). Exclusion criteria: Use of any investigational product (except pegvaliase) or investigational medical device within 30 days prior to screening or requirement for any investigational agent prior to completion of all scheduled study assessments. Use of any medication (except pegvaliase) intended to treat PKU, including the use of large neutral amino acids, within 2 days prior to the administration of pegvaliase (Day 1). Use or planned use of any injectable drugs containing PEG (other than pegvaliase), including medroxyprogesterone injection, within 3 months prior to screening and during study participation. A history of organ transplantation or on chronic immunosuppressive therapy A history of substance abuse (as defined by the American Psychiatric Association: Diagnostic and Statistical Manual of Mental Disorders [DSM]) in the past 12 months or current alcohol or drug abuse Current participation in the Kuvan® registry study (PKU Demographics, Outcomes and Safety [PKUDOS]) Concurrent disease or condition that would interfere with study participation or safety (eg, history or presence of clinically significant cardiovascular, pulmonary, hepatic, renal, hematologic, gastrointestinal, endocrine, immunologic, dermatologic, neurological, oncologic, or psychiatric disease) Any condition that, in the view of the investigator, places the subject at high risk of poor treatment compliance or terminating early from the study
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Medical Director, MD
Organizational Affiliation
BioMarin Pharmaceutical
Official's Role
Study Director
Facility Information:
Facility Name
University of Florida
City
Gainesville
State/Province
Florida
ZIP/Postal Code
32610
Country
United States
Facility Name
University of South Florida
City
Tampa
State/Province
Florida
ZIP/Postal Code
33606
Country
United States
Facility Name
Ann & Robert H. Lurie Children's Hospital of Chicago
City
Chicago
State/Province
Illinois
ZIP/Postal Code
60611
Country
United States
Facility Name
Indiana CTSI Clinical Research Center
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46202
Country
United States
Facility Name
University of Kentucky Medical Center
City
Lexington
State/Province
Kentucky
ZIP/Postal Code
40536
Country
United States
Facility Name
Wayne State University, Center for Molecular Medicine and Genetics, Pediatrics and Pathology
City
Detroit
State/Province
Michigan
ZIP/Postal Code
48201
Country
United States
Facility Name
University of Missouri Health Care
City
Columbia
State/Province
Missouri
ZIP/Postal Code
65201
Country
United States
Facility Name
Washington University School of Medicine
City
Saint Louis
State/Province
Missouri
ZIP/Postal Code
63110
Country
United States
Facility Name
University of Nebraska Medical Center
City
Omaha
State/Province
Nebraska
ZIP/Postal Code
68198
Country
United States
Facility Name
Morristown Medical Center
City
Morristown
State/Province
New Jersey
ZIP/Postal Code
07960
Country
United States
Facility Name
University of Oklahoma Health Science Center
City
Oklahoma City
State/Province
Oklahoma
ZIP/Postal Code
73104
Country
United States
Facility Name
Oregon Health and Science University
City
Portland
State/Province
Oregon
ZIP/Postal Code
97239
Country
United States
Facility Name
St. Christopher's Hospital for Children
City
Philadelphia
State/Province
Pennsylvania
ZIP/Postal Code
19134
Country
United States
Facility Name
UPMC Children's Hospital of Pittsburgh
City
Pittsburgh
State/Province
Pennsylvania
ZIP/Postal Code
15224
Country
United States
Facility Name
Vanderbilt University Medical Center
City
Nashville
State/Province
Tennessee
ZIP/Postal Code
37232
Country
United States
Facility Name
University of Texas Health Science Center at Houston
City
Houston
State/Province
Texas
ZIP/Postal Code
77030
Country
United States
Facility Name
Medical College of Milwaukee
City
Milwaukee
State/Province
Wisconsin
ZIP/Postal Code
53226
Country
United States

12. IPD Sharing Statement

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Safety and Efficacy of Self Administered Injections of Pegvaliase (>40mg/Day Dose) in Adults With PKU

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