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A Phase 3, Multicenter, Randomized, Partially Blinded, Palivizumab-Controlled Study to Evaluate the Safety, Efficacy, and Pharmacokinetics of MK-1654 in Infants and Children at Increased Risk for Severe RSV Disease

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2022-500752-39-00
Acronym
MK-1654-007
Enrollment
317
Registered
2023-05-22
Start date
2021-11-25
Completion date
2025-06-02
Last updated
2025-06-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prevention of Respiratory syncytial virus (RSV) infection in infants and children at increased risk for severe RSV disease

Brief summary

Percentage of participants with solicited injection-site Adverse Events (AEs) in respiratory syncytial virus (RSV) Season 1, Percentage of participants with solicited daily body temperature with fever in RSV Season 1, Percentage of participants with solicited systemic AEs in RSV Season 1, Percentage of participants with anaphylaxis/hypersensitivity AEs of special interest (AESI) in RSV Season 1, Percentage of participants with rash AESI in RSV Season 1, Percentage of participants with non-serious AEs in RSV Season 1, Percentage of participants with serious AEs (SAEs) through the duration of participation in RSV Season 1

Detailed description

Percentage of participants with RSV-associated medically attended lower respiratory infection (MALRI) in RSV Season 1, Percentage of participants with RSV-associated hospitalization in RSV Season 1, Percentage of participants with solicited injection-site AEs in RSV Season 2, Percentage of participants with solicited daily body temperature with fever in RSV Season 2, Percentage of participants with solicited systemic AEs in RSV Season 2, Percentage of participants with anaphylaxis/hypersensitivity AESI in RSV Season 2, Percentage of participants with rash AESI in RSV Season 2, Percentage of participants with non-serious AEs in RSV Season 2, Percentage of participants with SAEs through 180 days postdose in RSV Season 2, Serum concentration of clesrovimab (MK-1654) after dose of clesrovimab in RSV Season 1, Serum concentration of clesrovimab after dose of clesrovimab in RSV Season 2

Interventions

DRUGSynagis 100 mg/1 ml solution for injection
DRUGPlacebo to MK-1654 - Saline for injection

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
0 Years to 17 Years

Design outcomes

Primary

MeasureTime frame
Percentage of participants with solicited injection-site Adverse Events (AEs) in respiratory syncytial virus (RSV) Season 1, Percentage of participants with solicited daily body temperature with fever in RSV Season 1, Percentage of participants with solicited systemic AEs in RSV Season 1, Percentage of participants with anaphylaxis/hypersensitivity AEs of special interest (AESI) in RSV Season 1, Percentage of participants with rash AESI in RSV Season 1, Percentage of participants with non-serious AEs in RSV Season 1, Percentage of participants with serious AEs (SAEs) through the duration of participation in RSV Season 1

Secondary

MeasureTime frame
Percentage of participants with RSV-associated medically attended lower respiratory infection (MALRI) in RSV Season 1, Percentage of participants with RSV-associated hospitalization in RSV Season 1, Percentage of participants with solicited injection-site AEs in RSV Season 2, Percentage of participants with solicited daily body temperature with fever in RSV Season 2, Percentage of participants with solicited systemic AEs in RSV Season 2, Percentage of participants with anaphylaxis/hypersensitivity AESI in RSV Season 2, Percentage of participants with rash AESI in RSV Season 2, Percentage of participants with non-serious AEs in RSV Season 2, Percentage of participants with SAEs through 180 days postdose in RSV Season 2, Serum concentration of clesrovimab (MK-1654) after dose of clesrovimab in RSV Season 1, Serum concentration of clesrovimab after dose of clesrovimab in RSV Season 2

Countries

Czechia, Finland, France, Germany, Greece, Hungary, Italy, Norway, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026