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Growth Retardation In Children With Special Pathological Conditions Or Disease

Evolution Of Growth Rate In Children Suffering From A Disease Associated With Growth Retardation and Treated By Genotonorm. A Pilot Study.

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00163215
Enrollment
46
Registered
2005-09-13
Start date
2005-01-31
Completion date
2011-10-31
Last updated
2012-12-19

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

Conditions

Endocrine System Diseases

Brief summary

To show an increase in annual growth rate 3 years after Visit 2. Annual growth rate in standard deviation (SD) after 3 years will be compared to growth rate before the start of GH treatment.

Interventions

DRUGSomatropin

Adapted dosage based on IGF 1 level and weight Form: liquid; Dosage and Frequency: from 0.0033mg/kg/day to 0.0067 mg/kg/day; Duration: 3 years

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
11 Years to 13 Years
Healthy volunteers
No

Inclusion criteria

* Bone age \< 13 years for a boy and \< 11 years for a girl * Naive child: Measured Height \< -2.5 SD for CA * Child currently treated by GH

Exclusion criteria

* Idiopathic short stature * Syndrome known to be associated with an increased risk of cancer e.g. family history of adenomatous polyposis

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Intent-to-Treat (ITT) PopulationBaseline, Month 36Change in annual growth rate (AGR) standard deviation score (SDS) for chronological age (CA) derived by subtracting AGR SDS CA at baseline from each time point (Yx) value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.
Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Per-Protocol (PP) PopulationBaseline, Month 36Change in annual growth rate (AGR) standard deviation score (SDS) for chronological age (CA) derived by subtracting AGR SDS CA at baseline from each time point (Yx) value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.

Secondary

MeasureTime frameDescription
HeightBaseline, Month 12, Month 24, Month 36Height was measured using a wall mounted device (example, Harpenden stadiometer). The standing height of the participant was measured two times and the mean of these measurements was recorded.
Change From Baseline in Height at Month 12, Month 24 and Month 36Baseline, Month 12, Month 24, Month 36Height was measured using a wall mounted device (example, Harpenden stadiometer). The standing height of the participant was measured two times and the mean of these measurements was recorded.
Mean Height Standard Deviation Score (SDS) for Chronological Age (CA)Baseline, Month 12, Month 24, Month 36Height was measured using a wall mounted device (example, Harpenden stadiometer). The standing height of the participant was measured two times and the mean of these measurements was recorded. Height SDS CA Yx = (height Yx - reference mean for CA Yx) / reference SD for CA Yx. Height in SDS was calculated using Sempe reference means and SD for height. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar the participant was to the reference population.
Change From Baseline in Height Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12, Month 24 and Month 36Baseline, Month 12, Month 24, Month 36Change in height SDS CA was derived by subtracting height SDS CA at baseline from Yx value. Height SDS CA (for both baseline and Yx) = (height - reference mean for CA)/reference SD for CA. Height in SDS was calculated using Sempe reference means and SD for height. CA calculated as integer (Date of height measurement - Date of birth)/365.25\*12. SDS indicates how similar the participant was to the reference population.
Mean Height Standard Deviation Score (SDS) for Bone Age (BA)Baseline, Month 12, Month 24, Month 36Height SDS BA Yx = (height Yx - reference mean for BA Yx) / reference SD for BA Yx. Height in SDS was calculated using Sempe reference means and SD for height. BA was estimated locally using an X-ray from the left wrist and hand. SDS indicates how similar the participant was to the reference population.
Change From Baseline in Height Standard Deviation Score (SDS) for Bone Age (BA) at Month 12, Month 24 and Month 36Baseline, Month 12, Month 24, Month 36Change in height SDS BA was derived by subtracting height SDS BA at baseline from Yx value. Height SDS BA (for both baseline and Yx) = (height-reference mean for BA)/reference SD for BA. Height in SDS was calculated using Sempe reference means and SD for height. BA was estimated locally using an X-ray from the left wrist and hand. SDS indicates how similar the participant was to the reference population.
Change From Baseline in Annual Growth Rate at Month 12, Month 24 and Month 36 in ITT PopulationBaseline, Month 12, Month 24, Month 36Change in AGR at Yx was derived by subtracting AGR at baseline from Yx value. Annual growth rate was calculated each year and rescaled to 1 year if the interval between Yx and Y\[x-1\] was not 365 days, as long as a participant remained in the study. AGR at Yx was calculated using the previous height measurements (Y\[x-1\]) and height recorded at Yx (AGR Yx = \[height Yx-height Y{x-1}\] / (\[date of Yx - date of Y{x-1}\] /365.25).
Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in PP PopulationBaseline, Month 12, Month 24Change in annual growth rate (AGR) standard deviation score (SDS) for chronological age (CA) derived by subtracting AGR SDS CA at baseline from each time point (Yx) value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.
Mean Growth Rate Standard Deviation Score (SDS) for Bone Age (BA)Month 12, Month 24, Month 36AGR at Yx was derived by subtracting AGR at baseline from Yx value. AGR was calculated each year and rescaled to 1 year if the interval between Yx and Y\[x-1\] was not 365 days, as long as a participant remained in the study. AGR at Yx = \[height Yx-height Y{x-1}\] / (\[date of Yx - date of Y{x-1}\] /365.25). GR in SDS was calculated using Sempe reference means and SD for growth. BA was estimated locally using an X-ray from the left wrist and hand. SDS indicates how similar the participant was to the reference population.
Body Mass Index (BMI)Baseline, Month 12, Month 24, Month 36BMI was used to measure body fat based on height and weight. It was calculated as body weight (kilogram) divided by the height (meter) squared.
Change From Baseline in Body Mass Index (BMI) at Month 12, Month 24 and Month 36Baseline, Month 12, Month 24, Month 36BMI was used to measure body fat based on height and weight. It was calculated as body weight (kilogram) divided by the height (meter) squared.
Change From Baseline in Bone Age (BA) at Month 12, Month 24 and Month 36Baseline, Month 12, Month 24, Month 36BA was estimated locally using an X-ray from the left wrist and hand.
Ratio of Bone Age (BA) to Chronological Age (CA)Baseline, Month 12, Month 24, Month 36BA was estimated locally using an X-ray from the left wrist and hand. CA at the date of corresponding X-ray (Date of X-ray - Date of birth)/365.25. Ratio of BA/CA at each annual study visit was calculated.
Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in ITT PopulationBaseline, Month 12, Month 24Change in AGR SDS for CA derived by subtracting AGR SDS CA at baseline from Yx value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.
Change From Baseline in Annual Growth Rate at Month 12, Month 24, Month 36 in PP PopulationBaseline, Month 12, Month 24, Month 36Change in AGR at Yx was derived by subtracting AGR at baseline from Yx value. Annual growth rate was calculated each year and rescaled to 1 year if the interval between Yx and Y\[x-1\] was not 365 days, as long as a participant remained in the study. AGR at Yx was calculated using the previous height measurements (Y\[x-1\]) and height recorded at Yx (AGR Yx = \[height Yx-height Y{x-1}\] / (\[date of Yx - date of Y{x-1}\] /365.25).

Countries

France

Participant flow

Participants by arm

ArmCount
Genotonorm
Genotonorm (recombinant somatropin) up to maximum of 50 microgram/kilogram/day (mcg/kg/day) subcutaneously as decided by the investigator, divided in 7 daily doses for up to 3 years.
46
Total46

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyLack of Efficacy3
Overall StudyOther7
Overall StudyWithdrawal by Subject5

Baseline characteristics

CharacteristicGenotonorm
Age Continuous10.3 years
STANDARD_DEVIATION 3.6
Sex: Female, Male
Female
12 Participants
Sex: Female, Male
Male
34 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
21 / 46
serious
Total, serious adverse events
4 / 46

Outcome results

Primary

Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Intent-to-Treat (ITT) Population

Change in annual growth rate (AGR) standard deviation score (SDS) for chronological age (CA) derived by subtracting AGR SDS CA at baseline from each time point (Yx) value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.

Time frame: Baseline, Month 36

Population: Intent to Treat (ITT) set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Intent-to-Treat (ITT) PopulationChange at Month 36 (n = 26)2.36 SDSStandard Deviation 1.98
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Intent-to-Treat (ITT) PopulationBaseline (n = 42)-1.29 SDSStandard Deviation 1.79
Primary

Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Per-Protocol (PP) Population

Change in annual growth rate (AGR) standard deviation score (SDS) for chronological age (CA) derived by subtracting AGR SDS CA at baseline from each time point (Yx) value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.

Time frame: Baseline, Month 36

Population: Per Protocol (PP) analysis set included all participants in the ITT set without a major protocol violation. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Per-Protocol (PP) PopulationBaseline (n = 14)-1.98 SDSStandard Deviation 1.06
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 36 in Per-Protocol (PP) PopulationChange at Month 36 (n = 12)2.70 SDSStandard Deviation 2.02
Secondary

Body Mass Index (BMI)

BMI was used to measure body fat based on height and weight. It was calculated as body weight (kilogram) divided by the height (meter) squared.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here n signifies those participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormBody Mass Index (BMI)Baseline (n = 44)16.57 kilogram per square meter (kg/m^2)Standard Deviation 2.37
GenotonormBody Mass Index (BMI)Month 12 (n = 39)16.96 kilogram per square meter (kg/m^2)Standard Deviation 2.64
GenotonormBody Mass Index (BMI)Month 24 (n = 39)17.59 kilogram per square meter (kg/m^2)Standard Deviation 2.69
GenotonormBody Mass Index (BMI)Month 36 (n = 27)17.67 kilogram per square meter (kg/m^2)Standard Deviation 2.08
Secondary

Change From Baseline in Annual Growth Rate at Month 12, Month 24 and Month 36 in ITT Population

Change in AGR at Yx was derived by subtracting AGR at baseline from Yx value. Annual growth rate was calculated each year and rescaled to 1 year if the interval between Yx and Y\[x-1\] was not 365 days, as long as a participant remained in the study. AGR at Yx was calculated using the previous height measurements (Y\[x-1\]) and height recorded at Yx (AGR Yx = \[height Yx-height Y{x-1}\] / (\[date of Yx - date of Y{x-1}\] /365.25).

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24 and Month 36 in ITT PopulationChange at Month 24 (n = 35)2.5 centimeter per year (cm/year)Standard Deviation 2.7
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24 and Month 36 in ITT PopulationBaseline (n = 42)4.5 centimeter per year (cm/year)Standard Deviation 1.8
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24 and Month 36 in ITT PopulationChange at Month 12 (n = 36)3.3 centimeter per year (cm/year)Standard Deviation 2.9
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24 and Month 36 in ITT PopulationChange at Month 36 (n = 26)2.0 centimeter per year (cm/year)Standard Deviation 2
Secondary

Change From Baseline in Annual Growth Rate at Month 12, Month 24, Month 36 in PP Population

Change in AGR at Yx was derived by subtracting AGR at baseline from Yx value. Annual growth rate was calculated each year and rescaled to 1 year if the interval between Yx and Y\[x-1\] was not 365 days, as long as a participant remained in the study. AGR at Yx was calculated using the previous height measurements (Y\[x-1\]) and height recorded at Yx (AGR Yx = \[height Yx-height Y{x-1}\] / (\[date of Yx - date of Y{x-1}\] /365.25).

Time frame: Baseline, Month 12, Month 24, Month 36

Population: PP analysis set included all participants in the ITT set without a major protocol violation. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24, Month 36 in PP PopulationBaseline (n = 14)4.0 cm/yearStandard Deviation 1
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24, Month 36 in PP PopulationChange at Month 12 (n = 14)4.0 cm/yearStandard Deviation 1
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24, Month 36 in PP PopulationChange at Month 24 (n = 14)2.5 cm/yearStandard Deviation 1.3
GenotonormChange From Baseline in Annual Growth Rate at Month 12, Month 24, Month 36 in PP PopulationChange at Month 36 (n = 12)1.8 cm/yearStandard Deviation 1.1
Secondary

Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in ITT Population

Change in AGR SDS for CA derived by subtracting AGR SDS CA at baseline from Yx value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.

Time frame: Baseline, Month 12, Month 24

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in ITT PopulationChange at Month 12 (n = 36)3.23 SDSStandard Deviation 2.66
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in ITT PopulationChange at Month 24 (n = 35)2.62 SDSStandard Deviation 2.05
Secondary

Change From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in PP Population

Change in annual growth rate (AGR) standard deviation score (SDS) for chronological age (CA) derived by subtracting AGR SDS CA at baseline from each time point (Yx) value. AGR at Yx= (height Yx-height Y\[x-1\])/(\[date of Yx-date of Y{x-1}\]/365.25). AGR as SDS calculated using Sempe reference means and standard deviations (SD) for growth rate. AGR SDS CA (for both baseline and Yx)= (AGR-reference mean for growth rate CA)/reference SD for growth rate CA. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar participant was to reference population.

Time frame: Baseline, Month 12, Month 24

Population: PP analysis set included all participants in the ITT set without a major protocol violation. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in PP PopulationChange at Month 24 (n = 14)2.97 SDSStandard Deviation 1.68
GenotonormChange From Baseline in Annual Growth Rate Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12 and Month 24 in PP PopulationChange at Month 12 (n = 14)4.40 SDSStandard Deviation 2.12
Secondary

Change From Baseline in Body Mass Index (BMI) at Month 12, Month 24 and Month 36

BMI was used to measure body fat based on height and weight. It was calculated as body weight (kilogram) divided by the height (meter) squared.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Body Mass Index (BMI) at Month 12, Month 24 and Month 36Change at Month 12 (n = 39)0.52 kg/m^2Standard Deviation 1.01
GenotonormChange From Baseline in Body Mass Index (BMI) at Month 12, Month 24 and Month 36Change at Month 24 (n = 39)1.30 kg/m^2Standard Deviation 1.35
GenotonormChange From Baseline in Body Mass Index (BMI) at Month 12, Month 24 and Month 36Change at Month 36 (n = 27)1.89 kg/m^2Standard Deviation 1.61
Secondary

Change From Baseline in Bone Age (BA) at Month 12, Month 24 and Month 36

BA was estimated locally using an X-ray from the left wrist and hand.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Bone Age (BA) at Month 12, Month 24 and Month 36Change at Month 36 (n = 21)4.04 yearsStandard Deviation 1.09
GenotonormChange From Baseline in Bone Age (BA) at Month 12, Month 24 and Month 36Baseline (n = 40)8.70 yearsStandard Deviation 3.28
GenotonormChange From Baseline in Bone Age (BA) at Month 12, Month 24 and Month 36Change at Month 12 (n = 28)1.69 yearsStandard Deviation 0.9
GenotonormChange From Baseline in Bone Age (BA) at Month 12, Month 24 and Month 36Change at Month 24 (n = 28)2.60 yearsStandard Deviation 0.97
Secondary

Change From Baseline in Height at Month 12, Month 24 and Month 36

Height was measured using a wall mounted device (example, Harpenden stadiometer). The standing height of the participant was measured two times and the mean of these measurements was recorded.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Height at Month 12, Month 24 and Month 36Change at Month 12 (n = 39)7.7 cmStandard Deviation 2.1
GenotonormChange From Baseline in Height at Month 12, Month 24 and Month 36Change at Month 24 (n = 39)14.9 cmStandard Deviation 3.4
GenotonormChange From Baseline in Height at Month 12, Month 24 and Month 36Change at Month 36 (n = 27)22.3 cmStandard Deviation 3.7
Secondary

Change From Baseline in Height Standard Deviation Score (SDS) for Bone Age (BA) at Month 12, Month 24 and Month 36

Change in height SDS BA was derived by subtracting height SDS BA at baseline from Yx value. Height SDS BA (for both baseline and Yx) = (height-reference mean for BA)/reference SD for BA. Height in SDS was calculated using Sempe reference means and SD for height. BA was estimated locally using an X-ray from the left wrist and hand. SDS indicates how similar the participant was to the reference population.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Height Standard Deviation Score (SDS) for Bone Age (BA) at Month 12, Month 24 and Month 36Change at Month 12 (n = 28)-0.05 SDSStandard Deviation 1.04
GenotonormChange From Baseline in Height Standard Deviation Score (SDS) for Bone Age (BA) at Month 12, Month 24 and Month 36Change at Month 36 (n = 17)0.05 SDSStandard Deviation 1.32
GenotonormChange From Baseline in Height Standard Deviation Score (SDS) for Bone Age (BA) at Month 12, Month 24 and Month 36Change at Month 24 (n = 27)0.06 SDSStandard Deviation 1.36
Secondary

Change From Baseline in Height Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12, Month 24 and Month 36

Change in height SDS CA was derived by subtracting height SDS CA at baseline from Yx value. Height SDS CA (for both baseline and Yx) = (height - reference mean for CA)/reference SD for CA. Height in SDS was calculated using Sempe reference means and SD for height. CA calculated as integer (Date of height measurement - Date of birth)/365.25\*12. SDS indicates how similar the participant was to the reference population.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormChange From Baseline in Height Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12, Month 24 and Month 36Change at Month 12 (n = 39)0.41 SDSStandard Deviation 0.42
GenotonormChange From Baseline in Height Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12, Month 24 and Month 36Change at Month 24 (n = 39)0.81 SDSStandard Deviation 0.6
GenotonormChange From Baseline in Height Standard Deviation Score (SDS) for Chronological Age (CA) at Month 12, Month 24 and Month 36Change at Month 36 (n = 27)1.03 SDSStandard Deviation 0.62
Secondary

Height

Height was measured using a wall mounted device (example, Harpenden stadiometer). The standing height of the participant was measured two times and the mean of these measurements was recorded.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here n signifies those participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormHeightBaseline (n = 44)123.9 cmStandard Deviation 17.3
GenotonormHeightMonth 12 (n = 39)130.3 cmStandard Deviation 17.5
GenotonormHeightMonth 24 (n = 39)137.8 cmStandard Deviation 16.9
GenotonormHeightMonth 36 (n = 27)143.5 cmStandard Deviation 15.8
Secondary

Mean Growth Rate Standard Deviation Score (SDS) for Bone Age (BA)

AGR at Yx was derived by subtracting AGR at baseline from Yx value. AGR was calculated each year and rescaled to 1 year if the interval between Yx and Y\[x-1\] was not 365 days, as long as a participant remained in the study. AGR at Yx = \[height Yx-height Y{x-1}\] / (\[date of Yx - date of Y{x-1}\] /365.25). GR in SDS was calculated using Sempe reference means and SD for growth. BA was estimated locally using an X-ray from the left wrist and hand. SDS indicates how similar the participant was to the reference population.

Time frame: Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormMean Growth Rate Standard Deviation Score (SDS) for Bone Age (BA)Month 12 (n = 28)1.06 SDSStandard Deviation 1.57
GenotonormMean Growth Rate Standard Deviation Score (SDS) for Bone Age (BA)Month 24 (n = 25)0.46 SDSStandard Deviation 1.15
GenotonormMean Growth Rate Standard Deviation Score (SDS) for Bone Age (BA)Month 36 (n = 19)-0.01 SDSStandard Deviation 1.19
Secondary

Mean Height Standard Deviation Score (SDS) for Bone Age (BA)

Height SDS BA Yx = (height Yx - reference mean for BA Yx) / reference SD for BA Yx. Height in SDS was calculated using Sempe reference means and SD for height. BA was estimated locally using an X-ray from the left wrist and hand. SDS indicates how similar the participant was to the reference population.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormMean Height Standard Deviation Score (SDS) for Bone Age (BA)Baseline (n = 35)-0.71 SDSStandard Deviation 1.52
GenotonormMean Height Standard Deviation Score (SDS) for Bone Age (BA)Month 36 (n = 20)-0.30 SDSStandard Deviation 1.46
GenotonormMean Height Standard Deviation Score (SDS) for Bone Age (BA)Month 12 (n = 32)-0.55 SDSStandard Deviation 1.68
GenotonormMean Height Standard Deviation Score (SDS) for Bone Age (BA)Month 24 (n = 32)-0.49 SDSStandard Deviation 1.77
Secondary

Mean Height Standard Deviation Score (SDS) for Chronological Age (CA)

Height was measured using a wall mounted device (example, Harpenden stadiometer). The standing height of the participant was measured two times and the mean of these measurements was recorded. Height SDS CA Yx = (height Yx - reference mean for CA Yx) / reference SD for CA Yx. Height in SDS was calculated using Sempe reference means and SD for height. CA calculated as integer (Date of height measurement-Date of birth)/365.25\*12. SDS indicates how similar the participant was to the reference population.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here n signifies those participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormMean Height Standard Deviation Score (SDS) for Chronological Age (CA)Baseline (n = 44)-2.84 SDSStandard Deviation 0.91
GenotonormMean Height Standard Deviation Score (SDS) for Chronological Age (CA)Month 12 (n = 39)-2.42 SDSStandard Deviation 0.98
GenotonormMean Height Standard Deviation Score (SDS) for Chronological Age (CA)Month 36 (n = 27)-1.72 SDSStandard Deviation 0.96
GenotonormMean Height Standard Deviation Score (SDS) for Chronological Age (CA)Month 24 (n = 39)-2.09 SDSStandard Deviation 1.08
Secondary

Ratio of Bone Age (BA) to Chronological Age (CA)

BA was estimated locally using an X-ray from the left wrist and hand. CA at the date of corresponding X-ray (Date of X-ray - Date of birth)/365.25. Ratio of BA/CA at each annual study visit was calculated.

Time frame: Baseline, Month 12, Month 24, Month 36

Population: ITT set included all participants who received at least 1 dose of study medication and had at least 1 evaluation of height after start of study medication. Here 'N' (Number of participants analyzed) signifies those participants who were evaluable for this measure and n signifies those participants evaluated at that time point.

ArmMeasureGroupValue (MEAN)Dispersion
GenotonormRatio of Bone Age (BA) to Chronological Age (CA)Baseline (n = 40)0.79 ratioStandard Deviation 0.15
GenotonormRatio of Bone Age (BA) to Chronological Age (CA)Month 12 (n = 30)0.83 ratioStandard Deviation 0.15
GenotonormRatio of Bone Age (BA) to Chronological Age (CA)Month 24 (n = 32)0.85 ratioStandard Deviation 0.12
GenotonormRatio of Bone Age (BA) to Chronological Age (CA)Month 36 (n = 23)0.89 ratioStandard Deviation 0.14

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