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Active, not recruitingNCT03253263Updated Aug 3, 2026

A Clinical Efficacy and Safety Study of OHB-607 in Preventing Bronchopulmonary Dysplasia in Extremely Premature Infants

A Phase 2 interventional study of OHB-607 in Bronchopulmonary Dysplasia, Chronic Lung Disease of Prematurity and Intraventricular Hemorrhage, sponsored by OHB Neonatology Ltd.. Active, not recruiting at 62 sites in 13 countries. Open to participants aged 0 Hours to 24 Hours. Per ClinicalTrials.gov, last updated 2026-08-03.

Sponsored by OHB Neonatology Ltd. · Phase 2, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Jul 2026, 3 months ago, but the record still lists the study as active, not recruiting.
Phase
Phase 2
Study type
Interventional
Enrollment
295
Allocation
Randomized
Ages
0 Hours to 24 Hours
Sex
All
01

Study summary

The purpose of this study is to determine if an investigational drug can prevent Bronchopulmonary Dysplasia, reducing the burden of chronic lung disease in extremely premature infants, as compared to extremely premature infants receiving standard neonatal care alone.

02

Conditions studied

  • Bronchopulmonary Dysplasia
  • Chronic Lung Disease of Prematurity
  • Intraventricular Hemorrhage
  • Retinopathy of Prematurity (ROP)
03

In context

Bronchopulmonary Dysplasia

362 studies on the registry are indexed under Bronchopulmonary Dysplasia; 85 are open to participants now.

This study's enrollment of 295 is above the median of 66 across 244 interventional studies indexed under Bronchopulmonary Dysplasia.

Browse Bronchopulmonary Dysplasia studies →

Lead sponsor

This is the only study on the registry with OHB Neonatology Ltd. as lead sponsor.

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

04

Who can participate

Ages eligible
0 Hours to 24 Hours
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. Written informed consents and/or assents must be signed and dated by the participant's parent(s) prior to any study related procedures. The and any assents for underage parents must be approved by the IRB/IEC (in accordance with local regulations).
  2. Written informed consents and/or assents must be signed and dated by the participant's birth mother prior to providing study-related information related to birth mother medical history, pregnancy and the birth of the participant. The informed consent and any assents for underage birth mothers must be approved by the IRB/IEC (in accordance with local regulations).
  3. Subjects must be between 23 weeks +0 days and 27 weeks +6 days GA, inclusive.

Exclusion criteria

Exclusion Criteria:

  1. Detectable major (or severe) congenital malformation identified before randomization.
  2. Known or suspected chromosomal abnormality, genetic disorder, or syndrome, identified before randomization, according to the investigator's opinion.
  3. Hypoglycemia at Baseline (blood glucose less than (\<) 45 milligrams per deciliter [mg/dL] or 2.5 milli moles per liter [mmol/L]) which persists in spite of glucose supplementation, to exclude severe congenital abnormalities of glucose metabolism.
  4. neurological disease identified before randomization according to cranial ultrasound (hemorrhages confined to the germinal matrix are allowed) and investigator's opinion.
  5. Any other condition or therapy that, in the investigator's opinion, may pose a risk to the participant or interfere with the participant's potential compliance with this protocol or interfere with interpretation of results.
  6. Current or planned participation in a clinical study of another study treatment, device, or procedure (participation in non-interventional studies is permitted on a case-by-case basis).
  7. The participant or participant's parent(s) is/are unable to comply with the protocol or is unlikely to be available for long-term follow-up as determined by the investigator.
  8. Birth mother with active COVID-19 infection at birth or a history of severe COVID-19 infection (requiring intensive care hospitalization) during pregnancy.
  9. Birth mother with known or hepatitis (B, C, or E) infection.
Terms in these criteria, in plain language(4)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
295 participants (actual)

Study arms

  • Experimental
    OHB-607

    Participants will receive continuous IV infusion of OHB-607 through from birth up to PMA 29 weeks +6 days.

    Drug: OHB-607

  • No intervention
    Standard Neonatal Care

    Standard neonatal care alone will be provided.

Interventions

  • Participants will receive intravenous infusion of OHB-607 from birth up to PMA 29 weeks + 6 days.

    Also known as: Mecasermin Rinfabate

06

What researchers measure

Primary outcomes

  1. Reduction in the incidence of severe Bronchopulmonary Dysplasia (BPD) at 36 weeks (±3 days) Postmenstrual Age (PMA), or death at or before 36 weeks PMA, whichever comes first as compared to the SNC group.

    Severe BPD is defined by the modified NICHD severity grading

    Time frame: Baseline through 36 weeks postmenstrual age (PMA)

Secondary outcomes

  1. Reducing the burden of Chronic Lung Disease, as indicated by a reduction in time to final weaning off of Respiratory Technology Support (RTS) through 12 months Corrected Age (CA), as compared to the SNC group.

    The final weaning off of RTS is defined as the 7th consecutive day that the subject is off RTS.

    Time frame: Baseline through 12 months CA

  2. Reduction in the incidence of severe BPD at 36 weeks (±3 days) PMA, or death at or before 36 weeks PMA, whichever comes first as compared to the SNC group.

    Severe BPD is defined based on the classification according to Jensen et al., 2019

    Time frame: Time Frame: Baseline through 36 weeks postmenstrual age (PMA)

  3. Occurrence of severe (Grade 3 and 4) intraventricular hemorrhage (IVH) before 40 weeks PMA, as assessed by cranial ultrasound as compared to the SNC group

    Severe IVH as classified according to the Volpe criteria

    Time frame: Baseline through 40 weeks postmenstrual age (PMA)

  4. To assess the effect of OHB-607 on occurrence of severe retinopathy of prematurity (ROP) (Stage 3 and above) up to 40 weeks PMA as compared to the SNC group

    Time frame: Baseline through 40 weeks postmenstrual age (PMA)

  5. To assess the effect of OHB-607 on chronic respiratory outcomes as measured by the Chronic Lung Disease Prematurity Severity Score (CLDPSS) as compared to the SNC group at 12 months CA.

    Time frame: Baseline until 12 months CA using CLDPSS

  6. The effect of OHB-607 on neurodevelopment is measured by the Cognitive, Language and Motor Scales of the Bayley Scales of Infant and Toddler Development (BSID) III as compared to the SNC group at 24 months CA.

    Time frame: Time Frame: Determined by the separate BSID III scales at 24 months CA

  7. Chronic respiratory morbidity outcomes at 24 months CA

    Time frame: 24 months CA

  8. Incidence and severity of BPD

    BPD severity is defined by the modified NICHD severity grading

    Time frame: Baseline through 36 weeks postmenstrual age (PMA)

  9. Jensen BPD grade at 36 weeks PMA (± 3 days), as classified according to Jensen et al., 2019. Incidence of all severity grades of BPD as assessed by Jensen et al., 2019

    Time frame: 36 weeks weeks postmenstrual age (PMA) (± 3 days)

  10. Incidence and severity of IVH

    Incidence of all grades of IVH as assessed by centrally read CUS and classified according to the Volpe criteria

    Time frame: Baseline through 36 weeks postmenstrual age (PMA)

  11. Neurodevelopment outcomes

    Neurodevelopmental impairment, Physical and cognitive development will be measured by ASQ®-3 administered at 12 and 24 months CA.

    Time frame: From 6 months CA through 24 months CA

  12. Incidence of Retinopathy of Prematurity (ROP)

    ROP is classified according to the International Classification

    Time frame: Baseline through 40 weeks PMA

  13. Mortality from randomization through to 24 months CA

    Mortality rates from randomization to initial hospital discharge and from initial discharge through 24 months CA.

    Time frame: From birth through 24 months CA

  14. Exposure-response relationship between measured IGF-1 and Bronchopulmonary Dysplasia (BPD)

    Blood samples will be collected to measure IGF-1 and these measured values will be associated with the incidence and severity grade of BPD

    Time frame: Baseline through 36 weeks PMA

  15. Exposure-response relationship between measured IGF-1 and intraventricular hemorrhage (IVH)

    Blood samples will be collected to measure IGF-1 and these measured values will be associated with the incidence and severity grade of IVH

    Time frame: Baseline through 40 weeks PMA

  16. Exposure-response relationship between measured IGF-1 and necrotizing enterocolitis (NEC)

    Blood samples will be collected to measure IGF-1 and these measured values will be associated with the incidence and severity grade of NEC

    Time frame: Baseline through 40 weeks PMA

  17. Exposure-response relationship between measured IGF-1 and Retinopathy of Prematurity (ROP)

    Blood samples will be collected to measure IGF-1 and these measured values will be associated with the incidence and severity grade of ROP

    Time frame: Baseline through 40 weeks PMA

  18. To assess the safety profile of OHB-607 as compared to the SNC group.

    Incidence, severity, and causality assessment of Adverse Events (AEs) and Serious Adverse Events (SAEs), including Fatal AEs as per the neonatal adverse event severity scale.

    Time frame: Baseline through 24 months CA

07

Study locations

62 sites
08

References and documents

Publications

  • Kramer BW, Abman S, Daly M, Jobe AH, Niklas V. Insulin-like growth factor-1 replacement therapy after extremely premature birth: An opportunity to optimize lifelong lung health by preserving the natural sequence of lung development. Paediatr Respir Rev. 2023 Dec;48:24-29. doi: 10.1016/j.prrv.2023.05.001. Epub 2023 May 6. PubMed 37268507 ↗
  • Ley D, Hallberg B, Hansen-Pupp I, Dani C, Ramenghi LA, Marlow N, Beardsall K, Bhatti F, Dunger D, Higginson JD, Mahaveer A, Mezu-Ndubuisi OJ, Reynolds P, Giannantonio C, van Weissenbruch M, Barton N, Tocoian A, Hamdani M, Jochim E, Mangili A, Chung JK, Turner MA, Smith LEH, Hellstrom A; study team. rhIGF-1/rhIGFBP-3 in Preterm Infants: A Phase 2 Randomized Controlled Trial. J Pediatr. 2019 Mar;206:56-65.e8. doi: 10.1016/j.jpeds.2018.10.033. Epub 2018 Nov 22. PubMed 30471715 ↗
  • Baraldi E, De Luca D, Bonadies L, Hirano S, Kusuda S, Bancalari E, Ramanathan R, Barton N, Nickless A, Lee J, Mahajan N, Niklas V. Randomised al.Phase 2b trial of rhIGF-1/rhIGFBP-3 (OHB-607) for bronchopulmonary dysplasia prevention in preterm neonates: study protocol. BMJ Paediatr Open. 2026 Mar 5;10(1):e004196. doi: 10.1136/bmjpo-2025-004196. PubMed 41786363 ↗
  • Hellstrom W, Hortensius LM, Lofqvist C, Hellgren G, Tataranno ML, Ley D, Benders MJNL, Hellstrom A, Bjorkman-Burtscher IM, Heckemann RA, Savman K. Postnatal serum IGF-1 levels associate with brain volumes at term in extremely preterm infants. Pediatr Res. 2023 Feb;93(3):666-674. doi: 10.1038/s41390-022-02134-4. Epub 2022 Jun 9. PubMed 35681088 ↗

Individual participant data

Plan to share: No — De-identified individual participant data from this particular study will not be shared in order to minimize the risk that individual patients could be re-identified, given that there are limited numbers of study participants at each study site per year.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2019 (actual). Primary completion is estimated for Jul 2026, 86 months after the start.

Of 19 phase 2 interventional studies under Bronchopulmonary Dysplasia, half reached primary completion within 61 months of starting (the median), counting those still running; a quarter within 42 and three quarters within 69. This study's planned 86 months is above that.

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

Registered
Aug 15, 2017
First posted
Aug 17, 2017
StartActual
May 9, 2019
Primary completionEst.
Jul 31, 2026
CompletionEst.
Jan 21, 2028
Last update
Aug 3, 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 Aug 3, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03253263
Lead sponsor
OHB Neonatology Ltd.
Responsible party
Sponsor
First posted
Aug 17, 2017
Start date
May 9, 2019
Primary completion
Jul 31, 2026 (estimated)
Completion
Jan 21, 2028 (estimated)
Last update
Aug 3, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Mecasermin rinfabate

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