ClinicalTrials.gg
CompletedNCT02636270Updated Feb 28, 2024Results posted

IGF-1 Treatment for Individuals With Short Stature Due to PAPP-A2 Deficiency

A Phase 1/2 interventional study of Increlex in Short Stature, sponsored by Children's Hospital Medical Center, Cincinnati. Completed. Open to participants aged 10 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-02-28.

Sponsored by Children's Hospital Medical Center, Cincinnati · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
7
Allocation
Not applicable
Ages
10 Years and older
Sex
All
01

Study summary

With this study we want to investigate the pharmacokinetic (PK) effect of a single injection of rhIGF-1 in patients with PAPP-A2 mutations compared to heterozygous carriers and healthy controls. This will be followed by treatment of PAPP-A2 deficient patients with IGF-1 for a period of one-year to assess growth velocity. Additionally, we want to further describe the phenotypic characteristics of patients with PAPP-A2 deficiency.

Read the detailed description

The 24-hour pharmacokinetic response of free and total IGF-1 and IGF binding protein-3 (IGFBP-3) to a single dose of rhIGF-1 (120 mcg/kg) in three patients with PAPP-A2 mutation compared to up to four unaffected heterozygous relatives and 2 healthy adult controls.

One-year trial of rhIGF-1 at standard dose given to the two youngest males with PAPP-A2 mutation. The primary end point of this trial will be first year height velocity. Secondary outcomes will include height standard deviation score (SDS), height velocity, and whole body and lumbar spine bone mineral density assessment. The study was amended to extend the treatment period to continue until the subject has stopped growing (or elects to withdraw). All study procedures remain the same. Important note: the treatment phase continues to follow the youngest affected male. The older affected male developed an adverse event that resulted in discontinuation of treatment.

A post-treatment follow up visit (either in-person or remote) will be completed for the study participant who remained on Increlex approximately one-year after their discontinuation of therapy.

Description of additional phenotypic characteristics of patients with PAPP-A2 mutation will be studied by collecting information on glucose and insulin metabolism, body composition, bone geometry and bone density before and after treatment with rhIGF-1. These measures will be collected at the 12-month time period, and every year thereafter until the completion of the study. All three affected siblings will take part in the phenotyping activities.

02

Conditions studied

  • Short Stature

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03

In context

Dwarfism

99 studies on the registry are indexed under Dwarfism; 12 are open to participants now.

This study's enrollment of 7 is below the median of 60 across 66 interventional studies indexed under Dwarfism.

Browse Dwarfism studies →

Lead sponsor

Children's Hospital Medical Center, Cincinnati is the lead sponsor of 673 studies on the registry; 130 are open to participants now.

Of its 57 completed or terminated interventional studies of FDA-regulated products, 31 (54%) have results posted.

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

04

Who can participate

Ages eligible
10 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

PAPP-A2 deficient

Inclusion Criteria:

  • Defect in PAPP-A2 (heterozygous or homozygous mutation)

Exclusion Criteria:

  • None

Healthy Volunteers

Inclusion Criteria:

  • Between the ages of 18 and 30
  • In general good health

Exclusion Criteria:

  • Any medications (with the exception of )
  • Pregnancy
Terms in these criteria, in plain language(1)

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.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
7 participants (actual)

Study arms

  • Experimental
    PAPP-A2 deficient patients

    Patients deficient in PAPP-A2 with short stature will be treated with Increlex (rhIGF-1)

    Drug: Increlex

Interventions

  • Treat PAPP-A2 deficient patients with Increlex

    Also known as: rhIGF-1

06

What researchers measure

Primary outcomes

  1. Height Velocity

    Height velocity in a patient with PAPP-A2 deficiency treated with rhIGF-1 for five years (when the patient elected to discontinue treatment after reviewing growth velocity and skeletal maturation). Ultimately only one patient was treated for the study duration with results reported, as the other recruited participant (sibling of the treated patient) experienced pseudotumor cerebri and discontinued treatment after 51 days. He nevertheless was followed, with height velocity also reported.

    Time frame: Yearly until participant on treatment stops growing, or discontinues treatment (up to 6 years)

Secondary outcomes

  1. Height Standard Deviation Score

    Height Standard Deviation Score is the standard deviation above or below the mean the height is for age and gender. Values were obtained by plotting heights on Centers for Disease Control and Prevention growth charts. An increase in Height Standard Deviation Score correlates with increase in height. Results are reported for the participant with PAPP-A2 deficiency treated with rhIGF-1, as well as sibling who did not continue treatment with rhIGF-1.

    Time frame: Annually until completion of study, up to 6 years

  2. Pharmacokinetic/Pharmacodynamic (PK/PD) Relationship

    Assess the PK/PD relationship (PD marker being IGFBP-3) annually while on treatment with rhIGF-1

    Time frame: Yearly until completion of the study, up to 6 years

Other outcomes

  1. Glucose Pre- and Post-treatment With Recombinant Human IGF-I

    Observe nonparametric measures of glucose pre and post ongoing treatment with rhIGF-1. Oral glucose tolerance tests (OGTT) were performed annually during the five-year treatment period at pre-treatment (baseline) and post-initiation of treatment (after 12 months, 24 months, 36 months, 48 months, and 60 months).

    Time frame: Yearly until completion of the study, up to 6 years

  2. Insulin Metabolism Pre- and Post-treatment With Recombinant Human IGF-I

    Observe nonparametric measures of insulin metabolism in each individual pre (baseline) and post ongoing treatment with rhIGF-1. Oral glucose tolerance testing (OGTT) was performed pre-treatment (baseline) and post-treatment (after 12 months, 24 months, 36 months, 48 months, and 60 months).

    Time frame: Annually through completion of the study, up to 6 years

  3. Body Mass Index at Baseline and on Treatment With rhIGF-I

    Observe nonparametric measures of body composition pre (baseline) and post ongoing treatment with rhIGF-1 (assessed after 12 months, 24 months, 36 months, 48 months, and 60 months of rhIGF-1 treatment). BMI percentiles were determined utilizing Centers for Disease Control and Prevention growth charts.

    Time frame: Annually until completion of the study, up to 6 years

  4. Body Composition at Baseline and on Treatment With rhIGF-I

    Observe nonparametric measures of body composition pre (baseline) and post ongoing treatment with rhIGF-1 (assessed after 12 months, 24 months, 36 months, 48 months, and 60 months of rhIGF-1 treatment). Body fat content and lean body mass were evaluated with dual energy x-ray absorptiometry.

    Time frame: Annually until completion of the study, up to 6 years

  5. Total Body Fat Percentage at Baseline and on Treatment With rhIGF-I

    Observe nonparametric measures of body composition pre (baseline) and post ongoing treatment with rhIGF-1 (assessed after 12 months, 24 months, 36 months, 48 months, and 60 months of rhIGF-1 treatment). Body fat content and lean body mass were evaluated with dual energy x-ray absorptiometry.

    Time frame: Annually until completion of the study, up to 6 years

  6. C-telopeptide and Osteocalcin Concentrations at Baseline (Pre-treatment) and While on rhIGF-1.

    Observe nonparametric measures of bone turnover pre-treatment (baseline) and post initiation of ongoing treatment (at 12 months, 24 months, 36 months, 48 months, and 60 months) while on rhIGF-1

    Time frame: Yearly until completion of the study, up to 6 years

  7. Bone Density Pre-treatment (Baseline) and on Treatment With rhIGF-1

    Observe nonparametric measures of bone density at baseline (pre-treatment) and post initiation of ongoing treatment with rhIGF-1. Dual energy x-ray absorptiometry (DXA) was performed of total body less head, lumbar spine, hip, and forearm. Results are reported as height adjusted z-scores for age and gender, commonly done for bone density. A z-score of 0 is equivalent to population mean, positive above the mean, and negative below the mean. Z-scores within 2 standard deviations of the mean (Z-score 2 to -2) are generally considered normal, however are not sufficient to comment on presence or absence of osteoporosis in the pediatric population.

    Time frame: Annually until completion of therapy, up to 6 years

  8. Pharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Maximum Corrected Total IGF-I and Free IGF-I

    This was a pharmacokinetic assessment in regards to rhIGF-1 completed in siblings with PAPP-A2 deficiency, Participants received a 120 mcg/kg dose of rhIGF-1 (Increlex). Pharmacokinetic measurements were obtained over 24 hours. To isolate the effect of injected rhIGF-1, baseline-corrected concentrations were included by subtracting baseline concentration from measured concentrations. Results reported include maximum corrected total IGF-I and free IGF-I. Due to constraints of reporting platform, time to maximum values and area under the curve (AUC) 12 hours after the dose are reported as separate outcomes.

    Time frame: At baseline, prior to the ongoing treatment phase with rhIGF-1

  9. Pharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Time to Maximum Corrected Total IGF-I and Free IGF-I

    This was a pharmacokinetic assessment in regards to rhIGF-1 completed in siblings with PAPP-A2 deficiency, Participants received a 120 mcg/kg dose of rhIGF-1 (Increlex). Pharmacokinetic measurements were obtained over 24 hours. To isolate the effect of injected rhIGF-1, baseline-corrected concentrations were included by subtracting baseline concentration from measured concentrations. Results reported include time to maximum corrected total IGF-I and free IGF-I. Due to constraints of reporting platform, maximum corrected total IGF-I and free IGF-I values and area under the curve (AUC) 12 hours after the dose are reported as separate outcomes.

    Time frame: At baseline, prior to the ongoing treatment phase with rhIGF-1

  10. Pharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Area Under the Curve

    This was a pharmacokinetic assessment in regards to rhIGF-1 completed in siblings with PAPP-A2 deficiency, Participants received a 120 mcg/kg dose of rhIGF-1 (Increlex). Pharmacokinetic measurements were obtained over 24 hours. To isolate the effect of injected rhIGF-1, baseline-corrected concentrations were included by subtracting baseline concentration from measured concentrations. Results reported include area under the curve (AUC) 12 hours after the dose. Due to constraints of reporting platform, maximum corrected total IGF-I and free IGF-I, as well as time to maximum values separate outcomes.

    Time frame: At baseline, prior to the ongoing treatment phase with rhIGF-1

07

Results

Posted Feb 28, 2024

Participant flow

This is an n=7 study. A total of seven individuals will be recruited to participate in this study. Among the participants, we will have the three affected siblings with Pappalysin-2 (PAPP-A2) mutation (two males and one female), their heterozygous relatives (2 parents) and 2 healthy adult controls.

Participant flow — Overall Study
MilestonePAPP-A2 Deficient PatientsHealthy Control ParticipantsPAPP-A2 Heterozygous Relatives
Started322
Completed122
Not completed200
Withdrew: Adverse event100
Withdrew: Subject had completed growth prior to enrollment, so never started on recombinant igf-1100

Outcome measures

PrimaryHeight Velocity

Height velocity in a patient with PAPP-A2 deficiency treated with rhIGF-1 for five years (when the patient elected to discontinue treatment after reviewing growth velocity and skeletal maturation). Ultimately only one patient was treated for the study duration with results reported, as the other recruited participant (sibling of the treated patient) experienced pseudotumor cerebri and discontinued treatment after 51 days. He nevertheless was followed, with height velocity also reported.

Time frame:
Yearly until participant on treatment stops growing, or discontinues treatment (up to 6 years)
Reported as:
Number · cm/y
Height Velocity
cm/yTreatment With rhIGF-1Untreated Comparison
Baseline3.04.3
Year 16.24.8
Year 25.05.3
Year 35.33.4
Year 47.61.4
Year 56.5—
SecondaryHeight Standard Deviation Score

Height Standard Deviation Score is the standard deviation above or below the mean the height is for age and gender. Values were obtained by plotting heights on Centers for Disease Control and Prevention growth charts. An increase in Height Standard Deviation Score correlates with increase in height. Results are reported for the participant with PAPP-A2 deficiency treated with rhIGF-1, as well as sibling who did not continue treatment with rhIGF-1.

Time frame:
Annually until completion of study, up to 6 years
Reported as:
Number · standard deviation score
Height Standard Deviation Score
standard deviation scoreTreatment With rhIGF-1Untreated Comparison
Baseline-2.86-2.92
Year 1-2.53-2.99
Year 2-2.54-2.84
Year 3-2.61-2.69
Year 4-2.43-2.63
Year 5-2.27—
SecondaryPharmacokinetic/Pharmacodynamic (PK/PD) Relationship

Assess the PK/PD relationship (PD marker being IGFBP-3) annually while on treatment with rhIGF-1

Time frame:
Yearly until completion of the study, up to 6 years
Reported as:
Number · ng/mL
Pharmacokinetic/Pharmacodynamic (PK/PD) Relationship
ng/mLFree IGF-IIGF-IIGFBP-3PAPP-A2
Baseline0.79546.8100000.110
Year 11.17709.163620.190
Year 24.03814.440010.122
Year 35.13961.769530.077
Year 46.75120069560.050
Year 516.80120060530
Other pre-specifiedGlucose Pre- and Post-treatment With Recombinant Human IGF-I

Observe nonparametric measures of glucose pre and post ongoing treatment with rhIGF-1. Oral glucose tolerance tests (OGTT) were performed annually during the five-year treatment period at pre-treatment (baseline) and post-initiation of treatment (after 12 months, 24 months, 36 months, 48 months, and 60 months).

Time frame:
Yearly until completion of the study, up to 6 years
Reported as:
Number · mg/dL
Glucose Pre- and Post-treatment With Recombinant Human IGF-I
mg/dLOGTT - 0 MinutesOGTT - 30 MinutesOGTT - 60 MinutesOGTT - 90 MinutesOGTT - 120 Minutes
Baseline111.4193.9203.9156.6127.5
12 Months84.1144.178.896.990.6
24 Months103.5183.4132.0122.7116.2
36 Months103.9185.6153.8126.0104.3
48 Months97.3203.1249.3198.7169.7
60 Months93.1198.9224.5199.3151.6
Other pre-specifiedInsulin Metabolism Pre- and Post-treatment With Recombinant Human IGF-I

Observe nonparametric measures of insulin metabolism in each individual pre (baseline) and post ongoing treatment with rhIGF-1. Oral glucose tolerance testing (OGTT) was performed pre-treatment (baseline) and post-treatment (after 12 months, 24 months, 36 months, 48 months, and 60 months).

Time frame:
Annually through completion of the study, up to 6 years
Reported as:
Number · mcIU/mL
Insulin Metabolism Pre- and Post-treatment With Recombinant Human IGF-I
mcIU/mLOGTT - 0 MinutesOGTT - 30 MinutesOGTT - 60 MinutesOGTT - 90 MinutesOGTT - 120 Minutes
Baseline18.388.1113.2131.9107
12 Months4.538.111.222.622.3
24 Months8.751.233.826.925.8
36 Months20.4120.667.658.950.3
48 Months12.3102.3116.3114.1134.4
60 Months14.984.298.5116.994.4
Other pre-specifiedBody Mass Index at Baseline and on Treatment With rhIGF-I

Observe nonparametric measures of body composition pre (baseline) and post ongoing treatment with rhIGF-1 (assessed after 12 months, 24 months, 36 months, 48 months, and 60 months of rhIGF-1 treatment). BMI percentiles were determined utilizing Centers for Disease Control and Prevention growth charts.

Time frame:
Annually until completion of the study, up to 6 years
Reported as:
Number · percentile
Body Mass Index at Baseline and on Treatment With rhIGF-I
percentileBMI Percentile
Baseline12.96
Year 130.83
Year 256.60
Year 342.76
Year 454.20
Year 570.42
Other pre-specifiedBody Composition at Baseline and on Treatment With rhIGF-I

Observe nonparametric measures of body composition pre (baseline) and post ongoing treatment with rhIGF-1 (assessed after 12 months, 24 months, 36 months, 48 months, and 60 months of rhIGF-1 treatment). Body fat content and lean body mass were evaluated with dual energy x-ray absorptiometry.

Time frame:
Annually until completion of the study, up to 6 years
Reported as:
Number · g
Body Composition at Baseline and on Treatment With rhIGF-I
gTotal Lean Body MassTotal Fat Mass
Baseline152746543
Year 1189617390
Year 22136610501
Year 32387610084
Year 42977912060
Year 53639813998
Other pre-specifiedTotal Body Fat Percentage at Baseline and on Treatment With rhIGF-I

Observe nonparametric measures of body composition pre (baseline) and post ongoing treatment with rhIGF-1 (assessed after 12 months, 24 months, 36 months, 48 months, and 60 months of rhIGF-1 treatment). Body fat content and lean body mass were evaluated with dual energy x-ray absorptiometry.

Time frame:
Annually until completion of the study, up to 6 years
Reported as:
Number · percentage of total body fat
Total Body Fat Percentage at Baseline and on Treatment With rhIGF-I
percentage of total body fatTotal Body Fat Percentage
Baseline29.0
Year 127.1
Year 232.0
Year 328.7
Year 428.0
Year 527.0
Other pre-specifiedC-telopeptide and Osteocalcin Concentrations at Baseline (Pre-treatment) and While on rhIGF-1.

Observe nonparametric measures of bone turnover pre-treatment (baseline) and post initiation of ongoing treatment (at 12 months, 24 months, 36 months, 48 months, and 60 months) while on rhIGF-1

Time frame:
Yearly until completion of the study, up to 6 years
Reported as:
Number · ng/mL
C-telopeptide and Osteocalcin Concentrations at Baseline (Pre-treatment) and While on rhIGF-1.
ng/mLC-telopeptideOsteocalcin
Baseline174486
Year 12262123
Year 2176288
Year 32098110
Year 43216152
Year 52729126
Other pre-specifiedBone Density Pre-treatment (Baseline) and on Treatment With rhIGF-1

Observe nonparametric measures of bone density at baseline (pre-treatment) and post initiation of ongoing treatment with rhIGF-1. Dual energy x-ray absorptiometry (DXA) was performed of total body less head, lumbar spine, hip, and forearm. Results are reported as height adjusted z-scores for age and gender, commonly done for bone density. A z-score of 0 is equivalent to population mean, positive above the mean, and negative below the mean. Z-scores within 2 standard deviations of the mean (Z-score 2 to -2) are generally considered normal, however are not sufficient to comment on presence or absence of osteoporosis in the pediatric population.

Time frame:
Annually until completion of therapy, up to 6 years
Reported as:
Number · z-score
Bone Density Pre-treatment (Baseline) and on Treatment With rhIGF-1
z-scoreDXA Total Body Less HeadDXA Lumbar SpineDXA HipDXA Forearm
Baseline-0.9-0.2-0.6-0.6
Year 1-0.20.3-0.5-0.1
Year 2-0.20.7-0.4-0.4
Year 3-0.30.5-0.3-1.0
Year 4-0.50.4-0.7-1.0
Year 5-0.90.2-0.9-0.8
Other pre-specifiedPharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Maximum Corrected Total IGF-I and Free IGF-I

This was a pharmacokinetic assessment in regards to rhIGF-1 completed in siblings with PAPP-A2 deficiency, Participants received a 120 mcg/kg dose of rhIGF-1 (Increlex). Pharmacokinetic measurements were obtained over 24 hours. To isolate the effect of injected rhIGF-1, baseline-corrected concentrations were included by subtracting baseline concentration from measured concentrations. Results reported include maximum corrected total IGF-I and free IGF-I. Due to constraints of reporting platform, time to maximum values and area under the curve (AUC) 12 hours after the dose are reported as separate outcomes.

Time frame:
At baseline, prior to the ongoing treatment phase with rhIGF-1
Reported as:
Mean · mcg/L
Pharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Maximum Corrected Total IGF-I and Free IGF-I
mcg/LPAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealthy Controls
Maximum corrected total IGF-I225 (186 to 254)243 (203 to 283)284.5 (278 to 291)
Maximum corrected free IGF-I32 (26.6 to 35)30.5 (28.6 to 32.4)33.5 (10.9 to 56)
Other pre-specifiedPharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Time to Maximum Corrected Total IGF-I and Free IGF-I

This was a pharmacokinetic assessment in regards to rhIGF-1 completed in siblings with PAPP-A2 deficiency, Participants received a 120 mcg/kg dose of rhIGF-1 (Increlex). Pharmacokinetic measurements were obtained over 24 hours. To isolate the effect of injected rhIGF-1, baseline-corrected concentrations were included by subtracting baseline concentration from measured concentrations. Results reported include time to maximum corrected total IGF-I and free IGF-I. Due to constraints of reporting platform, maximum corrected total IGF-I and free IGF-I values and area under the curve (AUC) 12 hours after the dose are reported as separate outcomes.

Time frame:
At baseline, prior to the ongoing treatment phase with rhIGF-1
Reported as:
Mean · h
Pharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Time to Maximum Corrected Total IGF-I and Free IGF-I
hPAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealthy Controls
Time to maximum corrected total IGF-I4.2 (3.5 to 5)3.3 (3 to 3.5)5.5 (5 to 6)
Time to maximum corrected free IGF-I2.0 (1 to 3.5)2.3 (2 to 2.5)2.3 (2 to 2.5)
Other pre-specifiedPharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Area Under the Curve

This was a pharmacokinetic assessment in regards to rhIGF-1 completed in siblings with PAPP-A2 deficiency, Participants received a 120 mcg/kg dose of rhIGF-1 (Increlex). Pharmacokinetic measurements were obtained over 24 hours. To isolate the effect of injected rhIGF-1, baseline-corrected concentrations were included by subtracting baseline concentration from measured concentrations. Results reported include area under the curve (AUC) 12 hours after the dose. Due to constraints of reporting platform, maximum corrected total IGF-I and free IGF-I, as well as time to maximum values separate outcomes.

Time frame:
At baseline, prior to the ongoing treatment phase with rhIGF-1
Reported as:
Mean · mcg*h/L
Pharmacokinetic Description After Receiving Recombinant Human Insulin Like Growth Factor 1 (rhIGF-1): Area Under the Curve
mcg*h/LPAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealthy Controls
AUC_total IGF-1_0-12h2118 (1602 to 2406)2405 (2068 to 2742)2878.5 (2755 to 3002)
AUC_free IGF-I_0-12h115.7 (95 to 133)135 (118 to 152)155.5 (64 to 247)

Adverse events

Collected over The study adverse event data was collected over a period of 6 years (from baseline visit to one year post-treatment phone follow up).. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
PAPP-A2 Deficient Patients0/3 (0%)1/3 (33.3%)2/3 (66.7%)
PAPP-A2 Heterozygous Relatives0/2 (0%)0/2 (0%)0/2 (0%)
Healthy Control Participants0/2 (0%)0/2 (0%)0/2 (0%)
Most frequent serious events
Most frequent serious events
EventPAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealthy Control Participants
Pseudotumor cerebri in subjectNervous system disorders1/30/20/2
Most frequent other events
Showing 10 of 15
Most frequent other events
EventPAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealthy Control Participants
Walking pneumoniaRespiratory, thoracic and mediastinal disorders1/30/20/2
HeadachesNervous system disorders1/30/20/2
Hair lossSkin and subcutaneous tissue disorders1/30/20/2
FeverInfections and infestations1/30/20/2
VomitingGastrointestinal disorders1/30/20/2
Body aches and chillsInfections and infestations1/30/20/2
Mild lipohypertrophySkin and subcutaneous tissue disorders1/30/20/2
Flu type AInfections and infestations1/30/20/2
Viral strep throatInfections and infestations1/30/20/2
DiarrheaGastrointestinal disorders1/30/20/2

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)PAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealth Control ParticipantsTotal
<=18 years2002
Between 18 and 65 years1225
>=65 years0000
Sex: Female, Male
Sex: Female, Male(Participants)PAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealth Control ParticipantsTotal
Female1113
Male2114
Race (NIH/OMB)
Race (NIH/OMB)(Participants)PAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealth Control ParticipantsTotal
American Indian or Alaska Native0000
Asian3205
Native Hawaiian or Other Pacific Islander0000
Black or African American0000
White0011
More than one race0000
Unknown or Not Reported0011
Region of Enrollment
Region of Enrollment(Participants)PAPP-A2 Deficient PatientsPAPP-A2 Heterozygous RelativesHealth Control ParticipantsTotal
United States3227
08

Study locations

No study locations are listed for this record.

09

References and documents

Publications

  • Muthuvel G, Dauber A, Alexandrou E, Tyzinski L, Andrew M, Hwa V, Backeljauw P. Five-Year Therapy with Recombinant Human Insulin-Like Growth Factor-1 in a Patient with PAPP-A2 Deficiency. Horm Res Paediatr. 2023;96(5):449-457. doi: 10.1159/000529071. Epub 2023 Jan 16. PubMed 36646053 ↗
  • Cabrera-Salcedo C, Mizuno T, Tyzinski L, Andrew M, Vinks AA, Frystyk J, Wasserman H, Gordon CM, Hwa V, Backeljauw P, Dauber A. Pharmacokinetics of IGF-1 in PAPP-A2-Deficient Patients, Growth Response, and Effects on Glucose and Bone Density. J Clin Endocrinol Metab. 2017 Dec 1;102(12):4568-4577. doi: 10.1210/jc.2017-01411. PubMed 29029190 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — De-identifiable data may be shared with physician that is treating the only other two patients in the world with this genetic mutation.

Supporting information: Clinical study report

Time frame: The participant data will be available when the treatment trial is actively ongoing. Per study protocol, the study will provide clinical updates to the participants primary Endocrinologist. Should the family request any further information be shared once the study is closed, it can be given to a physician specified by the family.

Access criteria: De-identifiable data may be shared with physician that is treating the only other two patients in the world with this genetic mutation.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2015 to primary completion in Oct 2022, 81 months.

Results were first posted in Feb 2024, 1 year 4 months after primary completion.

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

Registered
Nov 10, 2015
First posted
Dec 21, 2015
StartActual
Dec 21, 2015
Primary completionActual
Oct 14, 2022
CompletionActual
Dec 1, 2022
Results first posted
Feb 28, 2024
Last update
Feb 28, 2024
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 Feb 28, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02636270
Responsible party
Sponsor
First posted
Dec 21, 2015
Start date
Dec 21, 2015
Primary completion
Oct 14, 2022
Completion
Dec 1, 2022
Results posted
Feb 28, 2024
Last update
Feb 28, 2024

Study contacts

Philippe Backeljauw, MD
principal investigator · Cincinnati Childrens Hospital
Gajanathan Muthuvel, MD
principal investigator · Cincinnati Childrens Hospital Medical Center

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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