Trial reportThe Pediatric infectious disease journal2018
Safety, Tolerability and Pharmacokinetics of MEDI8897, an Extended Half-life Single-dose Respiratory Syncytial Virus Prefusion F-targeting Monoclonal Antibody Administered as a Single Dose to Healthy Preterm Infants.
Trial report in The Pediatric infectious disease journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04625725 (A Phase III Randomized, Double-blind, Placebo-controlled, Multi-center Study in Adults to Determine the Safety and Efficacy of AZD7442, a Combination Product of Two Monoclonal Antibodies), which is not on this map. Cited by 119 papers, 7 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase III Randomized, Double-blind, Placebo-controlled, Multi-center Study in Adults to Determine the Safety and Efficacy of AZD7442, a Combination Product of Two Monoclonal Antibodies (AZD8895 and AZD1061), for Pre-exposure Prophylaxis of COVID-19.
Who cites it
119 citing papers in PubMed, 7 syntheses or guidelines pooled it, 225 citations in OpenAlex.
- Meta-analysis of the efficacy of palivizumab versus nirsevimab at preventing medically attended respiratory syncytial virus infections in non-hospitalized preterm infants.Human vaccines & immunotherapeutics · 2026Pooled it
- Efficacy and safety of monoclonal antibodies against respiratory syncytial virus disease in premature infants: a systematic review and network meta-analysis.Frontiers in pediatrics · 2026Pooled it
- Efficacy and safety of a single dose of nirsevimab against respiratory syncytial virus infection in infants: a meta-analysis and time-to-event analysis.Italian journal of pediatrics · 2025Pooled it
- Effectiveness of nirsevimab immunization against RSV infection in preterm infants: a systematic review and meta-analysis.Frontiers in immunology · 2025Pooled it
- The age profile of respiratory syncytial virus burden in preschool children of low- and middle-income countries: A semi-parametric, meta-regression approach.PLoS medicine · 2023Pooled it
- Monoclonal Antibody for the Prevention of Respiratory Syncytial Virus in Infants and Children: A Systematic Review and Network Meta-analysis.JAMA network open · 2023Pooled it
- Neutralization Activity of Anti-drug Antibodies Against a Biotherapeutic Can Be Predicted from a Comprehensive Pharmacokinetics, Pharmacodynamics, and Anti-drug Antibody Data Analysis.The AAPS journal · 2022Pooled it
- Safety and efficacy of the monoclonal antibody L9LS for malaria prevention in children exposed to perennial malaria transmission in Kenya: a randomised, double-blind, placebo-controlled, phase 2 trial.Lancet (London, England) · 2026Trial
- A Phase 1b/2a Trial of a Half-life Extended Respiratory Syncytial Virus Neutralizing Antibody, Clesrovimab, in Healthy Preterm and Full-term Infants.The Journal of infectious diseases · 2025Trial
- Development of High-Titer Antidrug Antibodies in a Phase 1b/2a Infant Clesrovimab Trial Are Associated With RSV Exposure Beyond Day 150.The Journal of infectious diseases · 2025Trial
- A phase I, randomized, placebo-controlled trial to evaluate the pharmacokinetics, safety, and tolerability of nirsevimab in healthy Chinese adults.Clinical and translational science · 2025Trial
- Replacing serum with dried blood microsampling for pharmacokinetics, viral neutralisation and immunogenicity bioanalysis supporting future paediatric development of RSM01, a candidate respiratory syncytial virus neutralising monoclonal antibody.BMC infectious diseases · 2024Trial
- A Randomized, Double-Blind, Placebo-Controlled, Phase 1 Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of Single Vaccination of Ad26.RSV.preF-Based Regimen in Japanese Adults Aged 60 Years and Older.Influenza and other respiratory viruses · 2024Trial
- Molecular and phenotypic characteristics of RSV infections in infants during two nirsevimab randomized clinical trials.Nature communications · 2023Trial
- Safety, Tolerability and Pharmacokinetics of Half-Life Extended Severe Acute Respiratory Syndrome Coronavirus 2 Neutralizing Monoclonal Antibodies AZD7442 (Tixagevimab-Cilgavimab) in Healthy Adults.The Journal of infectious diseases · 2023Trial
- Nirsevimab for respiratory syncytial virus prevention: A comprehensive product review.Human vaccines & immunotherapeutics · 2026Review
- Developmental Progress and Future Potential for Inhaled Biologics in the Treatment of Respiratory Diseases.Drugs · 2026Review
- Maternal RSV immunization: clinical efficacy, immunological mechanisms and public health implications for preventing infant lower respiratory tract infection.Journal of health, population, and nutrition · 2026Review
- mRNA-Encoded Antibodies: An Emerging Paradigm in Antiviral Protection.Biomolecules · 2026Review
- Preclinical characterisation of the protective capacity of an anti-nucleoprotein hRSV monoclonal antibody.EBioMedicine · 2026Article
59 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMEDI8897 is a recombinant human monoclonal antibody being developed for prophylaxis of serious respiratory syncytial virus (RSV) disease in all infants.
methodsIn this phase 1b/2a dose-escalation study, healthy preterm infants with a gestational age of 32-35 weeks were randomized to receive a single intramuscular injection of MEDI8897 (10, 25 or 50 mg) or placebo. Safety, pharmacokinetics, RSV-neutralizing antibody and antidrug antibody (ADA) assessments were performed during the 360-day follow-up period. Infants who experienced medically attended lower respiratory tract infections (LRTIs) were tested for RSV.
resultsMEDI8897 serum half-life ranged from 62.5-72.9 days. On day 151, 87% of infants in the 50 mg group had serum concentrations above the 90% effective concentration target level of 6.8 µg/mL, and 90% showed a ≥4-fold rise from baseline in serum RSV-neutralizing antibody levels. Adverse events (AEs) were reported in 17 of 18 (94.4%) placebo and 66 of 71 (93.0%) MEDI8897 recipients. Three MEDI8897 recipients experienced 5 serious AEs (3 LRTIs, 2 febrile seizures). ADA was detected at any time postbaseline in 28.2% of MEDI8897 recipients and at day 361 only in 26.5% of subjects. ADA response was not associated with AEs. Five (7%) MEDI8897 recipients experienced medically attended LRTIs through day 150; 1 tested positive for RSV (10 mg group).
conclusionsMEDI8897 had a favorable safety profile in healthy preterm infants. The extended half-life of MEDI8897 and demonstrated RSV-neutralizing activity support protection from RSV for the duration of a typical 5-month season after a single 50 mg intramuscular (IM) dose.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.