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Histrelin Subcutaneous Implant in Children With Central Precocious Puberty

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ClinicalTrials.gov Identifier: NCT00779103
Recruitment Status : Completed
First Posted : October 24, 2008
Last Update Posted : June 10, 2015
Information provided by (Responsible Party):

Study Description
Brief Summary:
The purpose of this study is to follow and collect additional medical and developmental information on children after histrelin subcutaneous implant therapy is discontinued.

Condition or disease Intervention/treatment Phase
Central Precocious Puberty Drug: Histrelin Subcutaneous Implant Phase 3

Detailed Description:
Thirty-two (32) patients will receive a histrelin subdermal implant under the anesthesia deemed appropriate by the administering physician. Ten-twelve (10-12) sites will enroll 2-3 patients per site. It is anticipated that half the patients will be receiving GnRH analog treatment and the other half will be treatment naïve. All patients will undergo selective PK sampling post-implantation to assess histrelin profile. At 12 months, provided that the patient continues to meet the safety and efficacy parameters, the original implant will be removed and the patient can receive a new implant. At 13 months, patients who receive new implants will be evaluated at the study site and administratively transferred to the initial extension study. At Month 24), the implants inserted at Month 12 will be removed. At this time, patients who have completed the initial extension study and who wish to continue therapy with the histrelin implant will be eligible to receive a new (ie, third) implant and to enter an additional 12-month extended access phase at the discretion of the investigator. At Month 36, the implants inserted at Month 24 for the Extended Access Phase will be removed. At this time, patients who have completed the Extended Access Phase and who wish to continue therapy with the histrelin implant will be eligible to receive a new (ie, fourth) implant and to enter the Long Term Extended Access Phase (referred to as the Implant Treatment Phase) at the discretion of the investigator. The purpose of this phase is to provide patients with the opportunity to continue to receive a new implant at the end of each 12-month period until the patient no longer requires hormone suppression. Once implant therapy is discontinued, all patients are eligible to enter the Long Term Follow Up Phase (Post Implant Phase) of the study.

Study Design

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 36 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Phase III, Open-Label Study to Evaluate Efficacy and Safety of Histrelin Subdermal Implant in Children With Central Precocious Puberty
Study Start Date : September 2004
Primary Completion Date : August 2011
Study Completion Date : April 2012

Arms and Interventions

Arm Intervention/treatment
Experimental: Histrelin Subcutaneous Implant (50 mg)
Subcutaneous implant designed to deliver histrelin continously for 12 months.
Drug: Histrelin Subcutaneous Implant
histrelin subcutaneous 50 mg implant
Other Names:
  • Supprelin LA
  • implant therapy
  • histrelin implant

Outcome Measures

Primary Outcome Measures :
  1. LH suppression following stimulation with a GnRH analog (leuprolide acetate) [ Time Frame: Every 6 months until hormone suppression is discontinued ]

Secondary Outcome Measures :
  1. Collect long term medical and developmental information until adulthood [ Time Frame: Up to 8-10 years post treatment ]

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   2 Years to 10 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Pre-treated or treatment naive patients with gonadotropin-dependent precocious puberty
  • Pre-treatment pubertal type response of LH to a stndard GnRH stimulation test before initiation of treatment

Exclusion Criteria:

  • Children who are less than 2 years of age at enrollment
  • Children whose chronological age is greater than 8 years (naive) and 10 years (pre-treated) for girls or 9 years (naive) and 11 years (pre-treated) for boys at the onset of the study
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00779103

Sponsors and Collaborators
Endo Pharmaceuticals
Principal Investigator: Erica A Eugster, MD Indiana University School of Medicine, 705 Riley Hosp Dr, Rm 5960 Indianapolis, IN 46202
More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Endo Pharmaceuticals
ClinicalTrials.gov Identifier: NCT00779103     History of Changes
Other Study ID Numbers: EN3326-300Former03-CPP-HIS-300
First Posted: October 24, 2008    Key Record Dates
Last Update Posted: June 10, 2015
Last Verified: June 2015

Keywords provided by Endo Pharmaceuticals:
precocious puberty
early puberty
early onset puberty
histrelin subcutaneous implant
implant therapy

Additional relevant MeSH terms:
Puberty, Precocious
Gonadal Disorders
Endocrine System Diseases