E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Central Precocious Puberty |
|
E.1.1.1 | Medical condition in easily understood language |
Central Precocious Puberty |
|
E.1.1.2 | Therapeutic area | Diseases [C] - Hormonal diseases [C19] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 17.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10073186 |
E.1.2 | Term | Central precocious puberty |
E.1.2 | System Organ Class | 100000004860 |
|
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To assess the efficacy and safety of the 11.25 mg and 30 mg formulations of leuprolide acetate for the treatment of central precocious puberty (CPP) in children who either are naïve to previous treatment with gonadotropin-releasing hormone analog (GnRHa) or who have previously been treated with GnRHa for at least the prior 6 months. |
|
E.2.2 | Secondary objectives of the trial |
To evaluate the pharmacokinetic (PK) profile of leuprolide following
intramuscular (IM) administration of the 11.25 and 30 mg depot formulations in a subset of subjects with
CPP. |
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. The informed consent form, assent form and any privacy statement (e.g., HIPAA)
must be approved by a local or central Institutional Review Board (IRB) as
required by State and local regulations. Prior to performing any trial-related
procedures, each subject's parent must review, understand, and sign an informed
consent form. When determined to be appropriate (as specified either by the IRB
and/or State and local regulations), each subject must also sign the assent form
after having had an opportunity to review the form and have its contents explained
and questions answered.
2. Subject has a clinical diagnosis of CPP.
3. Eligible to receive at least 6 months of therapy to treat CPP after study entry.
4. Chronological age at onset of pubertal symptoms less than 8 years old in girls and
less than 9 years old in boys at Day 1.
5. Bone age advanced at least 1 year beyond the chronological age at time of
diagnosis or first GnRHa therapy.
6. In general good health with no uncontrolled, clinically significant disease which
would interfere with bone maturation or mask the objectives of this protocol as
assessed by the investigator.
Additional criteria for subjects naïve to GnRHa treatment:
7. Girls 2-8 years inclusive or Boys 2-9 years inclusive at Day 1
8. Pretreatment pubertal response to leuprolide acetate stimulation (LH ≥ 8 mIU/mL)
at Screening.
9. Breast pubertal staging of at least II in Girls; testicular volume of at least 4cc or
testicular length greater than 2.5 cm in Boys at Screening.
Additional criteria for subjects previously treated with GnRHa:
10. Girls 2-10 years inclusive or Boys 2-11 years inclusive at Day 1.
11. Must have been on standard GnRHa therapy for at least the 6 months prior to
Day 1.
to the end of their previous GnRHa treatment cycle.
12. Should have documented maintenance of LH suppression as evidenced by peak
stimulated LH < 4 mIU/mL at Screening. |
|
E.4 | Principal exclusion criteria |
1. Incomplete precocious puberty (premature thelarche, premature adrenarche).
2. Peripheral precocious puberty: gonadal or adrenal tumors, congenital adrenal
hyperplasia, testotoxicosis in boys, hCG secreting tumor or McCune-Albright
syndrome in girls.
3. Evidence of any abnormal pituitary, hypothalamic, adrenal, thyroid and gonadal
function other than premature secretion of gonadotropins not adequately
controlled.
4. Unstable intracranial tumors (unresponsive to treatment/expanding) except
hamartoma.
5. Previous treatment with GnRHa therapy requiring leuprolide acetate for depot
suspension > 15 mg monthly.
6. Bone age > 13 years for girls and > 14 years for boys.
7. Any other condition interfering with growth, i.e., skeletal dysplasia, cerebral palsy.
8. Chronic illness requiring treatment that may interfere with growth, i.e., chronic
steroid use, renal failure, moderate to severe scoliosis.
9. Diagnosis of short stature, i.e., more than 2.25 SD below the mean height for age
(growth chart measurement).
10. Prior or current therapy with medroxyprogesterone acetate.
11. Prior or current therapy with growth hormone.
12. Subject has an abnormal laboratory value that suggest a clinically significant
underlying disease or condition that may prevent the subject from entering the
study or subject with the following laboratory abnormalities: Creatinine
> 1.5 mg/dL, ALT and/or AST > 2.0 × ULN, or total bilirubin > 2.0 mg/dL with
AST/ALT elevated above normal limits.
13. Subject has a positive pregnancy test.
14. Any concomitant medical condition that, in the opinion of the investigator, may
expose a subject to an unacceptable level of safety risk or that affects subject
compliance.
15. Known hypersensitivity to study medication or its excipients.
16. Subject is a family member of the investigator, sub investigator, or study
coordinator. Family member is defined to include either a child (including step or
foster child), niece, nephew, sibling or cousin.
17. Participation in another drug research within 3 months of randomization into this
study.
18. Prior or current therapy with IGF-1.
19. Use of an estrogen preparation within 2 months prior to Day 1. |
|
E.5 End points |
E.5.1 | Primary end point(s) |
Suppression of LH from Month 2 through Month 6 as determined by peak stimulated
LH < 4 mIU/mL at Months 2, 3 and 6. |
|
E.5.1.1 | Timepoint(s) of evaluation of this end point |
|
E.5.2 | Secondary end point(s) |
● Suppression of sex steroids (E2 < 20 pg/mL in girls and T < 30 ng/dL in boys)
measured at Months 1, 2, 3 and 6.
● Peak stimulated LH concentrations at Months 1, 2, 3 and 6.
● Suppression of the physical signs of puberty at Month 6 (subjects entering the
study with Pubertal staging 5 will be excluded from this analysis), defined as:
○ Regression or no progression of breast development according to Pubertal
staging (in girls).
○ Regression or no progression in testicular volume and genital staging
according to Pubertal staging (boys).
● Change from baseline in growth rate after 6-months of treatment within each
of the subgroups of subjects naïve to GnRHa treatment and previously treated.
● The ratio of change from baseline in bone age/change from baseline in
chronological age after 6 months of treatment within each of the subgroups of
subjects naïve to GnRHa treatment and previously treated. |
|
E.5.2.1 | Timepoint(s) of evaluation of this end point |
|
E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
Will this trial be conducted at a single site globally?
| No |
E.8.4 | Will this trial be conducted at multiple sites globally? | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | Specify the countries outside of the EEA in which trial sites are planned |
Puerto Rico |
United States |
|
E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
|
|
E.8.9 Initial estimate of the duration of the trial |
E.8.9.2 | In all countries concerned by the trial months | 10 |