ClinicalTrials.gg
RecruitingNCT07710430Updated Jul 29, 2026

A Study of Leuprorelin 1-Month (4-Week) Formulation in Children With Central Precocious Puberty

A Phase 4 interventional study of Leuprorelin in Central Precocious Puberty, sponsored by LG Chem. Recruiting at 1 site in South Korea. Open to participants aged Up to 10 Years. Per ClinicalTrials.gov, last updated 2026-07-29.

Sponsored by LG Chem · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
43
Allocation
Not applicable
Ages
Up to 10 Years
Sex
All
01

Study summary

A Single-Arm, Open-Label, Multicenter, Prospective Clinical Study to Evaluate the Effectiveness and Safety of Leuprorelin 1-Month (4-Week) Formulation Administered for 24 Months in Children with Central Precocious Puberty

02

Conditions studied

  • Central Precocious Puberty

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03

In context

Puberty, Precocious

75 studies on the registry are indexed under Puberty, Precocious; 18 are open to participants now.

This study's planned enrollment of 43 is below the median of 64 across 47 interventional studies indexed under Puberty, Precocious.

Browse Puberty, Precocious studies →

Lead sponsor

LG Chem is the lead sponsor of 71 studies on the registry; 8 are open to participants now.

Of its 13 completed or terminated interventional studies of FDA-regulated products, 1 (8%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Up to 10 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Tanner stage =>2
  2. Girls younger than 9 years old, boys younger than 10 years old
  3. Subjects who are diagnosed with central precocious puberty (CPP)

Exclusion criteria

Exclusion Criteria:

  1. GnRH-independent precocious puberty, incomplete precocious puberty, progressive brain tumors, pituitary adenoma
  2. Hepatic impairment or abnormal liver function tests at screening
  3. Renal impairment or abnormal renal function at screening
  4. Use of following within 8 weeks prior to screening or during the study: medications affecting gonadotropin or sex hormone, systemic , herbal medications
  5. Use of medications associated with seizures
  6. Requirement for treatments affecting the hypothalamic-pituitary-gonadal axis
  7. History of seizures, epilepsy, cerebrovascular disease, or central nervous system disorders/tumors
  8. Known or suspected
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
43 participants (estimated)

Study arms

  • Experimental
    Leuprorelin

    Drug: Leuprorelin

Interventions

  • Leuprorelin will be administered every 4 weeks.

06

What researchers measure

Primary outcomes

  1. Peak luteinizing hormone (LH) level following gonadotropin-releasing hormone (GnRH) stimulation is < 4 International Units per Liter (IU/L).

    Time frame: 24 weeks after treatment initiation

Secondary outcomes

  1. Peak LH level following GnRH stimulation is < 4 IU/L at 48, 96wk

    Time frame: 48 weeks and 96 weeks after treatment initiation

  2. Changes from baseline in endocrine function: basal LH in IU/L, follicle-stimulating hormone (FSH) in IU/L, testosterone (T) in nanograms per deciliter (ng/dL), estradiol (E2) in picograms per milliliter (pg/mL)

    Time frame: Up to 96 weeks after treatment initiation

  3. Changes from baseline in pubertal development: Tanner stage

    Time frame: Up to 96 weeks after treatment initiation

  4. Changes from baseline in growth related parameters: height in centimeter

    Time frame: Up to 96 weeks after treatment initiation

  5. Changes from baseline in growth related parameters: weight in kilograms

    Time frame: Up to 96 weeks after treatment initiation

  6. Safety: Number of participants with treatment-related adverse events as assessed by the investigator

    Time frame: Up to 96 weeks after treatment initiation

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Aug 2026; primary completion for Aug 2029, 36 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 6, 2026
First posted
Jul 17, 2026
StartEst.
Aug 1, 2026
Primary completionEst.
Aug 30, 2029
CompletionEst.
Apr 30, 2030
Last update
Jul 29, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 29, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07710430
Lead sponsor
LG Chem
Responsible party
Sponsor
First posted
Jul 17, 2026
Start date
Aug 1, 2026 (estimated)
Primary completion
Aug 30, 2029 (estimated)
Completion
Apr 30, 2030 (estimated)
Last update
Jul 29, 2026

Study contacts

Clinical Study Lead
Contact
lgclinical@lgchem.com
02-6987-4151

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Leuprolide

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