Preterm Erythropoietin Neuroprotection Trial (PENUT Trial)

University of Washington

Status and phase: Completed; Phase 3

Conditions: Extreme Prematurity

Treatments: Drug: Epo; Other: Control

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT01378273

STUDY00007464

U01NS077953 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

Recombinant human erythropoietin (Epo) is a promising novel neuroprotective agent. Epo decreases neuronal programmed cell death resulting from brain injury; it has anti-inflammatory effects, increases neurogenesis, and protects oligodendrocytes from injury.

We hypothesize that neonatal Epo treatment of ELGANs will decrease the combined outcome of death or severe NDI from 40% to 30% (primary outcome), or the combined outcome of death plus moderate or severe NDI from 60% to 40% (secondary outcome) measured at 24-26 months corrected age.

1. To determine whether Epo decreases the combined outcome of death or NDI at 24-26 months corrected age. NDI is defined as the presence of any one of the following: CP, Bayley Scales of Infant and Toddler Development, 3rd Edition (Bayley-III) Cognitive Scale < 70 (severe, 2 SD below mean) or 85 (moderate, 1 SD below mean). CP will be diagnosed and classified by standardized neurologic exam, with severity classified by Gross Motor Function Classification System (GMFCS).
2. To determine whether there are risks to Epo administration in ELGANs by examining, in a blinded manner, Epo-related safety measures comparing infants receiving Epo with those given placebo.
3. To test whether Epo treatment decreases serial measures of circulating inflammatory mediators, and biomarkers of brain injury.
4. To compare brain structure (as measured by MRI) in Epo treatment and control groups at 36 weeks PMA. MRI assessments will include documentation of intraventricular hemorrhage (IVH), white matter injury (WMI) and hydrocephalus (HC), volume of total and deep gray matter, white matter and cerebellum, brain gyrification, and tract-based spatial statistics (TBSS based on diffusion tensor imaging). As an exploratory aim, we will determine which of the above MRI measurements best predict neurodevelopment (CP, cognitive and motor scales) at 24-26 months corrected age.

Anticipated outcomes: Early Epo treatment of ELGANs will decrease biochemical and MRI markers of brain injury, will be safe, and will confer improved neurodevelopmental outcome at 24-26 months corrected age compared to placebo, and will provide a much-needed therapy for this group of vulnerable infants.

Full description

This is a randomized, placebo-controlled, study of Epo treatment of preterm infants 24-0/7 to 27-6/7 weeks of gestation, beginning in the first 24 hours after birth. Randomization will be stratified by site and gestational age at birth (<26 week or 26-27-6/7). Study size sample is 940 patients. We expect to evaluate 752 subjects at 24-26 months corrected age, our primary endpoint. There is no enrollment restriction based on gender, ethnicity or race. Enrollment is expected to take 24-26 months, with each subject participating through 24-26 months corrected age when neurodevelopmental outcomes are assessed. The combined outcome of death or severe NDI will be compared between Epo-treated and control subjects. All outcomes will be collected in a blinded manner. Subjects will be randomized by the data-coordinating center (DCC) to Epo treatment or placebo, and Epo treatment will continue until 32-6/7 weeks post menstrual age. Serial measurements of circulating inflammatory mediators and biomarkers of brain injury will be made. A brain MRI will be done at 36 weeks post menstrual age in the same subset of infants. Phone contact will occur at 4, 8, 12, and 18 months. Face to face follow up will occur at 24-26 months corrected age. The primary outcome is death or severe NDI at 24-26 months corrected age, with a secondary outcome of death or moderate NDI. Our primary sample size calculation is based on the conservative assumptions that Epo treatment will result in a 40% reduction in the severe NDI rate (the range in animal studies is 49-70%) and minimal impact on death. This would yield a control group rate for the primary outcome of 40.4% and an expected treated rate of 31.5% thus yielding an 8.9% lower rate of Death + NDI.

Clinical information including co-morbidities of extreme prematurity, information about transfusions, and specific laboratory values were collected in the PENUT database.

Enrollment: 941 patients

Sex: All

Ages: 24 to 27 weeks old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. NICU inpatients between 24-0/7 and 27-6/7 weeks of gestation
2. Less than twenty four hours of age
3. Parental informed consent

Exclusion criteria

1. Major life-threatening anomalies (brain, cardiac, chromosomal anomalies)
2. Hematologic crises such as DIC, or hemolysis due to blood group incompatibilities
3. Polycythemia (hematocrit > 65)
4. Congenital infection

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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941 participants in 2 patient groups, including a placebo group

Control

Placebo Comparator group

Description:

Subjects will receive 6 doses of vehicle intravenously during the first 2 weeks of life. Doses will be administered at 48 hour intervals from the time of enrollment. Following high dose administration, sham subcutaneous injections will be given three times a week through to 32-6/7 weeks postmenstrual age.

Treatment:

Other: Control

Epo 1000 U/kg followed by 400 U/kg

Experimental group

Description:

Subjects will receive 6 doses of intravenous Epo 1000 U/kg/dose at 48 hour intervals from the time of enrollment. Following the high dose period, subjects will receive subcutaneous Epo 400 U/kg/dose three times a week until 32-6/7 weeks postmenstrual age.

Treatment:

Drug: Epo