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LYB005 low dose without adjuvant

Phase 1

Respiratory Syncytial Virus (RSV) | Monoclonal antibody | Infectious Disease |Co-Diagnostics, Inc.|Last Updated: Mar 13, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment84
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06442241A Safety and Immunogenicity Trial of a Respiratory Syncytial Virus Vaccine, LYB005 in Healthy AdultsPHASE1 ACTIVE NOT_RECRUITING 84Jul 31, 2024Dec 30, 2025Mar 13, 20251 Australia
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Study Endpoints
Primary Endpoints
Immediate AEs for 30 minutes post-vaccination
30 mins after vaccination

The incidence and severity of any adverse events (AEs) within 30 minutes after the vaccination

Solicited local and systemic AEs and unsolicited AEs
Within 7 days after vaccination

The incidence and severity of any solicited local and systemic AEs and unsolicited AEs within 7 days after the vaccination

Unsolicited AEs
Within 28 days after vaccination

The incidence and severity of any unsolicited AEs within 28 days after the vaccination

Clinically significant laboratory abnormalities
Day 4, Day 8, Day 29 and Day 91

The occurrence of clinically significant laboratory abnormalities 3 days, 7 days, 28 days and 90 days after vaccination

Serious adverse events (SAEs) and adverse events of special interest (AESIs)
Within 6 months after the vaccination

The incidence of any serious adverse events (SAEs) and adverse events of special interest (AESIs) within 6 months after the vaccination

Secondary Endpoints
To observe the humoral immunity (antibodies level) of LYB005 vaccine
Day 15 and Day 29
To observe the persistence of humoral immunity (antibodies level) of LYB005 vaccine
Day 91 and Day 181
To observe the humoral immunity (increase in antibodies level) of LYB005 vaccine
Day 15 and Day 29
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Group 1 (LYB005 low dose without adjuvant; young adults)EXPERIMENTALYoung adults (18-59 years old) will receive a single injection of low dose LYB005 (30μg) without adjuvant on Day 1.
Group 2 (LYB005 middle dose without adjuvant; young adults)EXPERIMENTALYoung adults (18-59 years old) will receive a single injection of middle dose LYB005 (60μg) without adjuvant on Day 1.
Group 3 (LYB005 high dose without adjuvant; young adults)EXPERIMENTALYoung adults (18-59 years old) will receive a single injection of high dose LYB005 (120μg) without adjuvant on Day 1.
Group 4 (LYB005 low dose with adjuvant; young adults)EXPERIMENTALYoung adults (18-59 years old) will receive a single injection of low dose LYB005 (30μg) with adjuvant on Day 1.
Group 5 (LYB005 middle dose with adjuvant; young adults)EXPERIMENTALYoung adults (18-59 years old) will receive a single injection of middle dose LYB005 (60μg) with adjuvant on Day 1.
Group 6 (LYB005 high dose with adjuvant; young adults)EXPERIMENTALYoung adults (18-59 years old) will receive a single injection of high dose LYB005 (120μg) with adjuvant on Day 1.
Group 7 (placebo; young adults)PLACEBO_COMPARATORYoung adults (18-59 years old) will receive a single injection of placebo on Day 1.
Group 8 (LYB005 low dose without adjuvant; older adults)EXPERIMENTALOlder adults (≥60 years old) will receive a single injection of low dose LYB005 (30μg) without adjuvant on Day 1.
Group 9 (LYB005 middle dose without adjuvant; older adults)EXPERIMENTALOlder adults (≥60 years old) will receive a single injection of middle dose LYB005 (60μg) without adjuvant on Day 1.
Group 10 (LYB005 high dose without adjuvant; older adults)EXPERIMENTALOlder adults (≥60 years old) will receive a single injection of high dose LYB005 (120μg) without adjuvant on Day 1.
Group 11 (LYB005 low dose with adjuvant; older adults)EXPERIMENTALOlder adults (≥60 years old) will receive a single injection of low dose LYB005 (30μg) with adjuvant on Day 1.
Group 12 (LYB005 middle dose with adjuvant; older adults)EXPERIMENTALOlder adults (≥60 years old) will receive a single injection of middle dose LYB005 (60μg) with adjuvant on Day 1.
Group 13 (LYB005 high dose with adjuvant; older adults)EXPERIMENTALOlder adults (≥60 years old) will receive a single injection of high dose LYB005 (120μg) with adjuvant on Day 1.
Group 14 (AREXVY; older adults)ACTIVE_COMPARATOROlder adults (≥60 years old) will receive a single injection of positive control AREXVY on Day 1.
Interventions
NameTypeDescription
LYB005 low dose without adjuvantBIOLOGICALDosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
LYB005 middle dose without adjuvantBIOLOGICALDosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
LYB005 high dose without adjuvantBIOLOGICALDosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
LYB005 low dose with adjuvantBIOLOGICALDosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
LYB005 middle dose with adjuvantBIOLOGICALDosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
LYB005 high dose with adjuvantBIOLOGICALDosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
PlaceboBIOLOGICAL0.9% sodium chloride injection. Dosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
Positive controlBIOLOGICALAREXVY. Dosage forms and strengths: Solution for injection. Administer a single dose (0.5 mL) as an intramuscular injection.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: 1. Part 1-A male or female aged 18-59 years at screening; Part 2-A male or female aged 60 years and older at screening. 2. Written informed consent obtained from the subject before any assessment is performed. 3. Subjects who the investigator believes that they can and will comp...

Countries:Australia
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