The primary outcome measure compares the incidence of mechanically ventilated subjects with PH who achieve at least a 25 percent improvement in Oxygenation Index (OI) from baseline, or Surrogate Oxygenation Index (SOI) for subjects who are not ventilated, between gestation age groups. OI is commonly used to evaluate the severity of hypoxic respiratory failure (HRF) in neonates with PH.
The planned interim analysis occurred at the approximate midway point of enrollment (n=31 in the premature arm vs. n=56 in the term and near-term arm). The preliminary analysis found that, at this juncture in the study, approximately 86% of both cohorts showed a 25% or greater improvement in OI or SOI during the treatment period. The safety and efficacy of INOmax nitric oxide gas for treating HRF in premature neonates with PH has not been evaluated by the
"We are encouraged to see the results of the interim analysis for this patient population and look forward to learning more as this retrospective, observational registry enrollment progresses," said
INOmax nitric oxide gas is approved by the
The current study is a prospective observational registry that collects real world data that describes how INOmax nitric oxide gas is being used in clinical practice. As an observational study it does not utilize placebo or active control groups as comparators. Hence, some of the improvement observed in the current study could be due to factors other than treatment with INOmax. Similarly, without placebo control it is not possible to understand the magnitude to which patients who experienced limited response to inhaled nitric oxide would have otherwise decompensated without this treatment.
About the Study
The Phase 4 registry is titled "Multicenter, Prospectively Defined Observational Registry With Retrospective Data Collection, Evaluating Premature and Term-Near-Term Neonates With Pulmonary Hypertension Receiving Inhaled Nitric Oxide via Invasive or Noninvasive Ventilator Support at U.S. Centers" or the "Registry Evaluating Premature and Term-Near-Term Neonates With Pulmonary Hypertension Receiving Inhaled Nitric Oxide (PaTTerN)" trial. Data collected from this registry can help increase understanding of the potential utility of inhaled nitric oxide for treating PH and improving oxygenation in pre-term neonates with HRF associated with PH compared to term and near-term neonates with HRF associated with PH.
Targeted enrollment for this study is 168 patients. The primary outcome measure compares the incidence of subjects with at least a 25% improvement in Oxygenation Index or Surrogate Oxygenation Index (for subjects who are not mechanically ventilated), compared to baseline and summarized by gestation age group. Study completion is expected by 2022.
No drug-related significant safety issues have been identified in this observational, retrospective data to date.
More information on the study can be found here on clinicaltrials.gov.
About Persistent Pulmonary Hypertension of the Newborn (PPHN)
PPHN is a serious and sometimes fatal cardiorespiratory complication of the transition to extra-uterine life.1 PPHN is a clinical syndrome associated with various neonatal cardiorespiratory diseases, including meconium aspiration, respiratory distress syndrome (hyaline membrane disease), congenital heart disease and congenital hernia. Despite the diversity of causes, marked pulmonary vasoconstriction is the central pathophysiologic feature of PPHN. The most significant hemodynamic feature in neonates with severe hypoxia is a pulmonary-to-systemic pressure imbalance. Treatment in these neonates is directed toward lowering the pulmonary vascular pressure and supporting the systemic circulation.
In the U.S., INOmax is indicated to improve oxygenation and reduce the need for extracorporeal membrane oxygenation in term and near-term (>34 weeks gestation) neonates with HRF associated with clinical or echocardiographic evidence of pulmonary hypertension in conjunction with ventilatory support and other appropriate agents.
Important Safety Information
Mallinckrodt uses its website as a channel of distribution of important company information, such as press releases, investor presentations and other financial information. It also uses its website to expedite public access to time-critical information regarding the company in advance of or in lieu of distributing a press release or a filing with the U.S. Securities and Exchange Commission (
Cautionary Statements Related to Forward-Looking Statements
This release includes forward-looking statements concerning the company's Phase 4 registry related to INOmax for premature neonates, including expectations with regard to the registry, future research plans and the potential impact on patients. The statements are based on assumptions about many important factors, including the following, which could cause actual results to differ materially from those in the forward-looking statements: satisfaction of regulatory and other requirements; actions of regulatory bodies and other governmental authorities; changes in laws and regulations; issues with product quality, manufacturing or supply, or patient safety issues; and other risks identified and described in more detail in the "Risk Factors" section of
Vice President, Investor Relations and IRO
© 2019 Mallinckrodt. US1900533 5/19
1 Data on file.
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