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Somatropin + Leuprorelin vs Somatropin Alone in Pubertal Children With Idiopathic Short Stature

Efficacy and Safety of Somatropin in Combination With Leuprorelin Compared to Somatropin Alone in Pubertal Children With Idiopathic Short Stature

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00355030
Acronym
Phoenix
Enrollment
91
Registered
2006-07-20
Start date
2006-06-30
Completion date
2015-07-31
Last updated
2019-09-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Idiopathic Short Stature (ISS)

Brief summary

The present randomized trial was initially intended to study the benefits of a combined treatment with growth hormone (GH) and a gonadotropin-releasing hormone (GnRH) agonist for pubertal children with idiopathic short stature. However, treatments were stopped in January 2012 at the request of the French drug agency. Therefore, a protocol amendment divided the study in two study periods. Study Period 1 involved combined treatment with somatropin and leuprorelin or treatment with somatropin alone. Participants from France who participated in this Period 1 of the study were asked to participate in a long term safety follow up defined as a Period 2 of the study. Participants from the Netherlands were offered participation in Genetics and Neuroendocrinology of Short Stature International Study (GeNeSIS, clinicaltrials.gov Identifier: NCT01088412) for long term safety follow up independent of this study.

Interventions

DRUGsomatropin

0.05 mg/kg/day

DRUGleuprorelin

11.25 mg/3 months

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
8 Years to 171 Months
Healthy volunteers
No

Inclusion criteria

* male or female children with ISS * age greater than or equal to 8 years and less than or equal to 12 years and 3 months for girls and greater than or equal to 9 years and less than or equal to 14 years and 3 months for boys * bone age less than or equal to 12.0 years for girls and less than or equal to 14.0 years for boys based on a central reading of an X-ray of the left hand and wrist * Pubertal stage B2 and B3 for girls based on the Tanner method * Pubertal stage G2 and G3 for boys based on the Tanner method

Exclusion criteria

* Growth hormone deficiency (GHD) * Insulin-like growth factor-I levels greater than 3 SDS * Chromosomal abnormality diagnosed locally on a karyotype. For girls, the karyotype to eliminate a Turner syndrome, is mandatory * Small for gestational age (SGA) * Has reached menarche (had her first menstrual period) * Have any significant concomitant disease that is likely to interfere with growth or with the study, or is a known contraindication to Growth Hormone treatment

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With One or More Drug-related Adverse EventsBaseline through End of Study (up to 9 years)A drug-related AE was an AE that occurred postdose or was present predose and became more severe postdose and was considered to be related to study treatment. A summary of other nonserious AEs, and all SAE's, regardless of causality, is located in the Reported Adverse Events section.
Adult Height Standard Deviation Score (SDS)Baseline through End of Study (up to 9 years)The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.

Secondary

MeasureTime frameDescription
Difference Between Adult Height SDS and Target Height SDSBaseline through End of Study (up to 9 years)This is the difference between the gender, age and country matched standard deviation score of adult height and standard deviation score of target height \[calculated as (mother's height (SDS) + father's height (SDS))/2\] for particular participant. The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.
Difference Between Adult Height SDS and Baseline Predicted Height SDSBaseline through End up Study (up to 9 years)This is the difference between the gender, age and country matched standard deviation score of adult height and standard deviation score of baseline predicted height \[calculated using the Bayley-Pinneau method based on height and bone age\] for particular participant. The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.
Height VelocityBaseline through End of Study (up to 9 years)Height velocity is the difference between 2 height measurements, divided by years elapsed between measurements.
Percentage of Children With Normal Adult Height SDSBaseline through End of Study (up to 9 years)Percentage of children with normal adult height SDS (greater than -2 SDS and less than +2 SDS)
Bone AgeBaseline through End of Study (up to 9 years)Bone age measured using the X-Ray of left hand and wrist.
Difference Between Adult Height SDS and Baseline Height SDSBaseline through End up Study (up to 9 years)This is the difference between the gender, age and country matched standard deviation score of adult height and standard deviation score of baseline height for particular participant. The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.
Height SDSBaseline through End of Study (up to 9 years)SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.

Countries

France, Netherlands

Participant flow

Participants by arm

ArmCount
Somatropin and Leuprorelin
0.05mg/kg/day subcutaneous somatropin and 3-month formulation, subcutaneous or intramuscular injection of 11.25mg leuprorelin for three years (or for a minimum of 2 years until a chronological age of 13 years for girls and 15 years for boys, whichever occurs first).
45
Somatropin
0.05mg/kg/day subcutaneous somatropin only
43
Total88

Withdrawals & dropouts

PeriodReasonFG000FG001
Study Period 1 TreatmentAdverse Event11
Study Period 1 TreatmentLost to Follow-up30
Study Period 1 TreatmentOther26
Study Period 1 TreatmentParent/Caregiver Decision12
Study Period 1 TreatmentPhysician Decision01
Study Period 1 TreatmentProtocol Entry Criterion Not Met01
Study Period 1 TreatmentSponsor Decision3432
Study Period 1 TreatmentWithdrawal by Subject41
Study Period 2 Long Term Follow-UpLost to Follow-up01
Study Period 2 Long Term Follow-UpWithdrawal by Subject11

Baseline characteristics

CharacteristicSomatropin and LeuprorelinTotalSomatropin
Age, Continuous12.1 years
STANDARD_DEVIATION 1.41
12.1 years
STANDARD_DEVIATION 1.36
12.1 years
STANDARD_DEVIATION 1.33
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
4 Participants6 Participants2 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants3 Participants1 Participants
Race (NIH/OMB)
White
38 Participants78 Participants40 Participants
Region of Enrollment
France
39 participants77 participants38 participants
Region of Enrollment
Netherlands
6 participants11 participants5 participants
Sex: Female, Male
Female
26 Participants46 Participants20 Participants
Sex: Female, Male
Male
19 Participants42 Participants23 Participants
Standing Height131.6 centimeters
STANDARD_DEVIATION 6.72
131.6 centimeters
STANDARD_DEVIATION 6.24
131.6 centimeters
STANDARD_DEVIATION 5.78
Standing Height SDS-2.5 Standard Deviation Score
STANDARD_DEVIATION 0.45
-2.5 Standard Deviation Score
STANDARD_DEVIATION 0.045
-2.5 Standard Deviation Score
STANDARD_DEVIATION 0.46

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
41 / 4636 / 45
serious
Total, serious adverse events
12 / 467 / 45

Outcome results

Primary

Adult Height Standard Deviation Score (SDS)

The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.

Time frame: Baseline through End of Study (up to 9 years)

Population: All participants who received at least one dose of study drug with at least one follow up visit.

ArmMeasureValue (MEAN)Dispersion
Somatropin and LeuprorelinAdult Height Standard Deviation Score (SDS)-1.8 standard deviation scoreStandard Deviation 0.53
SomatropinAdult Height Standard Deviation Score (SDS)-1.9 standard deviation scoreStandard Deviation 0.77
Primary

Number of Participants With One or More Drug-related Adverse Events

A drug-related AE was an AE that occurred postdose or was present predose and became more severe postdose and was considered to be related to study treatment. A summary of other nonserious AEs, and all SAE's, regardless of causality, is located in the Reported Adverse Events section.

Time frame: Baseline through End of Study (up to 9 years)

Population: All participants who received at least one dose of study drug in Period 1 and all participants who entered Period 2 (safety population).

ArmMeasureGroupValue (NUMBER)
Somatropin and LeuprorelinNumber of Participants With One or More Drug-related Adverse EventsStudy Period 1 (n=46, 45)42 participants
Somatropin and LeuprorelinNumber of Participants With One or More Drug-related Adverse EventsStudy Period 2 (n=20, 19)11 participants
SomatropinNumber of Participants With One or More Drug-related Adverse EventsStudy Period 1 (n=46, 45)38 participants
SomatropinNumber of Participants With One or More Drug-related Adverse EventsStudy Period 2 (n=20, 19)9 participants
Secondary

Bone Age

Bone age measured using the X-Ray of left hand and wrist.

Time frame: Baseline through End of Study (up to 9 years)

Population: All participants who received at least one dose of study drug with at least one follow up visit. The safety follow up participants did not reach final height at end of Period 1 unless final height is noted for participants that reached final height at the end of Period 1.

ArmMeasureGroupValue (MEAN)Dispersion
Somatropin and LeuprorelinBone AgeMonth 12 (n=40, 41)11.7 yearsStandard Deviation 1.59
Somatropin and LeuprorelinBone AgeSafety follow up 6 months (n=16, 7)14.1 yearsStandard Deviation 1.11
Somatropin and LeuprorelinBone AgeMonth 36 (n=18, 18)13.3 yearsStandard Deviation 1.49
Somatropin and LeuprorelinBone AgeSafety follow up 18 months (n=12, 3)15.2 yearsStandard Deviation 1.25
Somatropin and LeuprorelinBone AgeMonth 24 (n=34, 37)12.4 yearsStandard Deviation 1.32
Somatropin and LeuprorelinBone AgeSafety follow up 36 months (n=5, 0)15.7 yearsStandard Deviation 1.04
Somatropin and LeuprorelinBone AgeMonth 48 (n=7, 8)14.8 yearsStandard Deviation 1.33
Somatropin and LeuprorelinBone AgeSafety follow up 12 months (final height)(n=18,14)19.6 yearsStandard Deviation 14.53
Somatropin and LeuprorelinBone AgeRandomization (n=45, 43)10.8 yearsStandard Deviation 1.58
SomatropinBone AgeSafety follow up 12 months (final height)(n=18,14)16.3 yearsStandard Deviation 1.27
SomatropinBone AgeRandomization (n=45, 43)11.0 yearsStandard Deviation 1.45
SomatropinBone AgeMonth 12 (n=40, 41)12.1 yearsStandard Deviation 1.12
SomatropinBone AgeMonth 24 (n=34, 37)13.4 yearsStandard Deviation 1.09
SomatropinBone AgeMonth 36 (n=18, 18)14.5 yearsStandard Deviation 1.64
SomatropinBone AgeMonth 48 (n=7, 8)15.4 yearsStandard Deviation 1.27
SomatropinBone AgeSafety follow up 6 months (n=16, 7)14.9 yearsStandard Deviation 0.81
SomatropinBone AgeSafety follow up 18 months (n=12, 3)17.0 yearsStandard Deviation 1
SomatropinBone AgeSafety follow up 36 months (n=5, 0)0 yearsStandard Deviation 0
Secondary

Difference Between Adult Height SDS and Baseline Height SDS

This is the difference between the gender, age and country matched standard deviation score of adult height and standard deviation score of baseline height for particular participant. The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.

Time frame: Baseline through End up Study (up to 9 years)

Population: All participants who received who reached final height.

ArmMeasureValue (MEAN)Dispersion
Somatropin and LeuprorelinDifference Between Adult Height SDS and Baseline Height SDS0.6 standard deviation scoreStandard Deviation 0.59
SomatropinDifference Between Adult Height SDS and Baseline Height SDS0.6 standard deviation scoreStandard Deviation 0.67
Secondary

Difference Between Adult Height SDS and Baseline Predicted Height SDS

This is the difference between the gender, age and country matched standard deviation score of adult height and standard deviation score of baseline predicted height \[calculated using the Bayley-Pinneau method based on height and bone age\] for particular participant. The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.

Time frame: Baseline through End up Study (up to 9 years)

Population: All participants who received who reached final height.

ArmMeasureValue (MEAN)Dispersion
Somatropin and LeuprorelinDifference Between Adult Height SDS and Baseline Predicted Height SDS1.1 standard deviation scoreStandard Deviation 0.96
SomatropinDifference Between Adult Height SDS and Baseline Predicted Height SDS1.2 standard deviation scoreStandard Deviation 0.7
Secondary

Difference Between Adult Height SDS and Target Height SDS

This is the difference between the gender, age and country matched standard deviation score of adult height and standard deviation score of target height \[calculated as (mother's height (SDS) + father's height (SDS))/2\] for particular participant. The height of the participants were measured barefoot using a standard wall-mounted Harpenden stadiometer. SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.

Time frame: Baseline through End of Study (up to 9 years)

Population: All participants who received who reached final height.

ArmMeasureValue (MEAN)Dispersion
Somatropin and LeuprorelinDifference Between Adult Height SDS and Target Height SDS-0.6 standard deviation scoreStandard Deviation 0.89
SomatropinDifference Between Adult Height SDS and Target Height SDS-1.2 standard deviation scoreStandard Deviation 0.8
Secondary

Height SDS

SDS report the number of standard deviations from the mean for age and sex for an individual measurement (normal range: -2 to +2 SDS). Height SDS is derived by subtracting the population mean from individual's height value and then dividing that difference by the population standard deviation. Greater height SDS values indicate greater height.

Time frame: Baseline through End of Study (up to 9 years)

Population: All participants who received at least one dose of study drug with at least one follow up visit. The safety follow up participants did not reach final height at end of Period 1 unless final height is noted for participants that reached final height at the end of Period 1.

ArmMeasureGroupValue (MEAN)Dispersion
Somatropin and LeuprorelinHeight SDSSafety follow up 24 months (n=9, 1)-1.9 standard deviation scoreStandard Deviation 0.46
Somatropin and LeuprorelinHeight SDSMonth 3 (n=45, 43)-2.4 standard deviation scoreStandard Deviation 0.42
Somatropin and LeuprorelinHeight SDSMonth 6 (n=45, 42)-2.3 standard deviation scoreStandard Deviation 0.48
Somatropin and LeuprorelinHeight SDSMonth 12 (n=44, 42)-2.2 standard deviation scoreStandard Deviation 0.5
Somatropin and LeuprorelinHeight SDSMonth 18 (n=42, 42)-2.2 standard deviation scoreStandard Deviation 0.53
Somatropin and LeuprorelinHeight SDSMonth 24 (n=37, 41)-2.3 standard deviation scoreStandard Deviation 0.58
Somatropin and LeuprorelinHeight SDSMonth 36 (n=18, 19)-2.0 standard deviation scoreStandard Deviation 0.65
Somatropin and LeuprorelinHeight SDSMonth 42 (n=13, 14)-1.8 standard deviation scoreStandard Deviation 0.68
Somatropin and LeuprorelinHeight SDSMonth 48 (n=7, 8)-1.6 standard deviation scoreStandard Deviation 0.52
Somatropin and LeuprorelinHeight SDSMonth 54 (n=1, 1)-1.0 standard deviation scoreStandard Deviation 0
Somatropin and LeuprorelinHeight SDSSafety follow up 6 months (n=16, 9)-2.1 standard deviation scoreStandard Deviation 0.65
Somatropin and LeuprorelinHeight SDSSafety follow up 12 months(n=15, 8)-1.9 standard deviation scoreStandard Deviation 0.55
Somatropin and LeuprorelinHeight SDSSafety follow up 18 months (n=12, 4)-1.9 standard deviation scoreStandard Deviation 0.63
Somatropin and LeuprorelinHeight SDSSafety follow up 36 months (n=5, 0)-1.9 standard deviation scoreStandard Deviation 0.67
Somatropin and LeuprorelinHeight SDSSafety follow up 42 months (n=2, 0)-2.4 standard deviation scoreStandard Deviation 0.18
Somatropin and LeuprorelinHeight SDSSafety follow up 12 months (final height)(n=18,14)-1.9 standard deviation scoreStandard Deviation 0.46
Somatropin and LeuprorelinHeight SDSSafety follow up 24 months (final height) (n=7,10)-1.6 standard deviation scoreStandard Deviation 0.56
Somatropin and LeuprorelinHeight SDSSafety follow up 36 months (final height) (n=3,7)-1.2 standard deviation scoreStandard Deviation 0.9
Somatropin and LeuprorelinHeight SDSMonth 30 (n=25, 25)-2.2 standard deviation scoreStandard Deviation 0.63
Somatropin and LeuprorelinHeight SDSRandomization (n=45, 43)-2.5 standard deviation scoreStandard Deviation 0.45
SomatropinHeight SDSSafety follow up 42 months (n=2, 0)0 standard deviation scoreStandard Deviation 0
SomatropinHeight SDSRandomization (n=45, 43)-2.5 standard deviation scoreStandard Deviation 0.46
SomatropinHeight SDSSafety follow up 6 months (n=16, 9)-1.7 standard deviation scoreStandard Deviation 0.77
SomatropinHeight SDSMonth 3 (n=45, 43)-2.4 standard deviation scoreStandard Deviation 0.47
SomatropinHeight SDSMonth 48 (n=7, 8)-1.9 standard deviation scoreStandard Deviation 0.65
SomatropinHeight SDSMonth 6 (n=45, 42)-2.2 standard deviation scoreStandard Deviation 0.52
SomatropinHeight SDSSafety follow up 12 months(n=15, 8)-1.7 standard deviation scoreStandard Deviation 0.77
SomatropinHeight SDSMonth 12 (n=44, 42)-2.0 standard deviation scoreStandard Deviation 0.57
SomatropinHeight SDSSafety follow up 12 months (final height)(n=18,14)-1.8 standard deviation scoreStandard Deviation 0.71
SomatropinHeight SDSMonth 18 (n=42, 42)-1.9 standard deviation scoreStandard Deviation 0.63
SomatropinHeight SDSSafety follow up 18 months (n=12, 4)-1.9 standard deviation scoreStandard Deviation 0.78
SomatropinHeight SDSMonth 24 (n=37, 41)-1.8 standard deviation scoreStandard Deviation 0.67
SomatropinHeight SDSMonth 30 (n=25, 25)-2.0 standard deviation scoreStandard Deviation 0.58
SomatropinHeight SDSSafety follow up 24 months (n=9, 1)-1.2 standard deviation scoreStandard Deviation 0
SomatropinHeight SDSMonth 36 (n=18, 19)-2.0 standard deviation scoreStandard Deviation 0.68
SomatropinHeight SDSSafety follow up 36 months (final height) (n=3,7)-2.2 standard deviation scoreStandard Deviation 0.94
SomatropinHeight SDSMonth 42 (n=13, 14)-1.9 standard deviation scoreStandard Deviation 0.66
SomatropinHeight SDSSafety follow up 36 months (n=5, 0)0 standard deviation scoreStandard Deviation 0
SomatropinHeight SDSSafety follow up 24 months (final height) (n=7,10)-2.0 standard deviation scoreStandard Deviation 0.79
SomatropinHeight SDSMonth 54 (n=1, 1)-1.7 standard deviation scoreStandard Deviation 0
Secondary

Height Velocity

Height velocity is the difference between 2 height measurements, divided by years elapsed between measurements.

Time frame: Baseline through End of Study (up to 9 years)

Population: All participants who received at least one dose of study drug with at least one follow up visit. The safety follow up participants did not reach final height at end of Period 1 unless final height is noted for participants that reached final height at the end of Period 1.

ArmMeasureGroupValue (MEAN)Dispersion
Somatropin and LeuprorelinHeight VelocityRandomization (n=45, 43)7.8 centimeter per yearStandard Deviation 6.92
Somatropin and LeuprorelinHeight VelocityMonth 3 (n=45, 43)9.9 centimeter per yearStandard Deviation 3.94
Somatropin and LeuprorelinHeight VelocityMonth 6 (n=45, 42)8.1 centimeter per yearStandard Deviation 2.31
Somatropin and LeuprorelinHeight VelocityMonth 12 (n=44, 42)7.0 centimeter per yearStandard Deviation 1.64
Somatropin and LeuprorelinHeight VelocityMonth 18 (n=42, 42)6.6 centimeter per yearStandard Deviation 1.68
Somatropin and LeuprorelinHeight VelocityMonth 24 (n=37, 41)4.9 centimeter per yearStandard Deviation 1.33
Somatropin and LeuprorelinHeight VelocityMonth 30 (n=25, 25)6.2 centimeter per yearStandard Deviation 2.09
Somatropin and LeuprorelinHeight VelocitySafety follow up 36 months (final height) (n=3,7)0.9 centimeter per yearStandard Deviation 0.78
Somatropin and LeuprorelinHeight VelocityMonth 36 (n=18, 19)6.6 centimeter per yearStandard Deviation 3.25
Somatropin and LeuprorelinHeight VelocityMonth 42 (n=13, 14)5.7 centimeter per yearStandard Deviation 1.94
Somatropin and LeuprorelinHeight VelocityMonth 48 (n=7, 8)5.4 centimeter per yearStandard Deviation 2.27
Somatropin and LeuprorelinHeight VelocityMonth 54 (n=1, 1)6.3 centimeter per yearStandard Deviation 0
Somatropin and LeuprorelinHeight VelocitySafety follow up 6 months (n=16, 9)4.6 centimeter per yearStandard Deviation 2.08
Somatropin and LeuprorelinHeight VelocitySafety follow up 12 months(n=15, 8)2.9 centimeter per yearStandard Deviation 2.37
Somatropin and LeuprorelinHeight VelocitySafety follow up 18 months (n=12, 4)3.3 centimeter per yearStandard Deviation 1.69
Somatropin and LeuprorelinHeight VelocitySafety follow up 24 months (n=9, 1)2.0 centimeter per yearStandard Deviation 1.32
Somatropin and LeuprorelinHeight VelocitySafety follow up 36 months (n=5, 0)1.3 centimeter per yearStandard Deviation 0.53
Somatropin and LeuprorelinHeight VelocitySafety follow up 42 months (n=2, 0)2.1 centimeter per yearStandard Deviation 2.45
Somatropin and LeuprorelinHeight VelocitySafety follow up 12 months (final height)(n=18,14)0.5 centimeter per yearStandard Deviation 0.86
Somatropin and LeuprorelinHeight VelocitySafety follow up 24 months (final height) (n=7,10)0.3 centimeter per yearStandard Deviation 0.77
SomatropinHeight VelocityMonth 42 (n=13, 14)3.7 centimeter per yearStandard Deviation 2.17
SomatropinHeight VelocityRandomization (n=45, 43)7.4 centimeter per yearStandard Deviation 6.03
SomatropinHeight VelocitySafety follow up 18 months (n=12, 4)1.2 centimeter per yearStandard Deviation 1.2
SomatropinHeight VelocityMonth 3 (n=45, 43)10.6 centimeter per yearStandard Deviation 3.53
SomatropinHeight VelocityMonth 48 (n=7, 8)2.9 centimeter per yearStandard Deviation 2.73
SomatropinHeight VelocityMonth 6 (n=45, 42)9.7 centimeter per yearStandard Deviation 2.8
SomatropinHeight VelocitySafety follow up 12 months (final height)(n=18,14)0.8 centimeter per yearStandard Deviation 1.59
SomatropinHeight VelocityMonth 12 (n=44, 42)8.8 centimeter per yearStandard Deviation 2.33
SomatropinHeight VelocityMonth 54 (n=1, 1)7.1 centimeter per yearStandard Deviation 0
SomatropinHeight VelocityMonth 18 (n=42, 42)8.4 centimeter per yearStandard Deviation 2.64
SomatropinHeight VelocitySafety follow up 24 months (n=9, 1)2.5 centimeter per yearStandard Deviation 0
SomatropinHeight VelocityMonth 24 (n=37, 41)7.8 centimeter per yearStandard Deviation 3.36
SomatropinHeight VelocitySafety follow up 6 months (n=16, 9)4.5 centimeter per yearStandard Deviation 2.45
SomatropinHeight VelocitySafety follow up 24 months (final height) (n=7,10)0.3 centimeter per yearStandard Deviation 0.97
SomatropinHeight VelocitySafety follow up 42 months (n=2, 0)0 centimeter per yearStandard Deviation 0
SomatropinHeight VelocitySafety follow up 36 months (final height) (n=3,7)0.3 centimeter per yearStandard Deviation 0.6
SomatropinHeight VelocityMonth 30 (n=25, 25)5.8 centimeter per yearStandard Deviation 2.93
SomatropinHeight VelocitySafety follow up 12 months(n=15, 8)2.3 centimeter per yearStandard Deviation 1.43
SomatropinHeight VelocityMonth 36 (n=18, 19)3.5 centimeter per yearStandard Deviation 2.71
SomatropinHeight VelocitySafety follow up 36 months (n=5, 0)0 centimeter per yearStandard Deviation 0
Secondary

Percentage of Children With Normal Adult Height SDS

Percentage of children with normal adult height SDS (greater than -2 SDS and less than +2 SDS)

Time frame: Baseline through End of Study (up to 9 years)

Population: All participants who received at least one dose of study drug with at least one follow up visit.

ArmMeasureValue (NUMBER)
Somatropin and LeuprorelinPercentage of Children With Normal Adult Height SDS26.7 percentage of participants
SomatropinPercentage of Children With Normal Adult Height SDS25.6 percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026