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LTB-SA7

Phase 1

Staphylococcus (S.) Aureus Infection | Monoclonal antibody | Other |Eli Lilly and Company|Last Updated: Aug 3, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment129

FDA Designations

No designations recorded

Clinical trial landscape

LTB-SA7 · 1 trial · 1 indication

Phase 1 1
NCT06719219A First in Human Trial to Assess the Safety and Immunogenicity of LTB-SA7 Vaccine Against Staphylococcus Aureus.Staphylococcus (S.) Aureus Infection
COMPLETED129 Analytics
PHASE1COMPLETED
A First in Human Trial to Assess the Safety and Immunogenicity of LTB-SA7 Vaccine Against Staphylococcus Aureus.
Staphylococcus (S.) Aureus InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

Safety - Solicited local and systemic AEs
During 7 days following each vaccination.

Occurrence and severity of solicited local and systemic AEs during 7 days after each dose (i.e., day of vaccination and the 6 subsequent days) in all participants by intervention group.

Safety - Unsolicited AEs
During 28 days following each vaccination.

Occurrence, severity, and relationship to vaccination of unsolicited AEs during 28 days after each dose (i.e., day of injection and the 27 subsequent days) in all participants by intervention group.

Safety - SAEs
Throughout the study, on average 8 months

Occurrence, severity, and relationship to vaccination of SAEs in all participants during the trial duration by intervention group.

Immunogenicity - GMTs of anti-toxoids IgGs in serum at V4
1 month from the first vaccination.

Serum IgG antibody geometric mean titers (GMT) against each of the 7 toxoids present in the LTB-SA7 vaccine in serum samples collected 4 weeks after the 1st vaccination (Visit 4 \[Day 29\]) by intervention group to identify preferred dose(s).

Secondary Endpoints

Immunogenicity - GMTs of anti-toxoid IgGs in serum at V3, V5 and V6
From 1 week after first vaccination till Day 57 (Visit 6).
Immunogenicity - GMFR of anti-toxoid IgGs in serum at V2-V6.
Between baseline on Visit 2 (Day 1) until 4 weeks post 2nd vaccination on Visit 6 (Day 57).
Immunogenicity - Total IgGs titer in serum
Between baseline on Visit 2 (Day 1) until 4 weeks post 2nd vaccination on Visit 6 (Day 57).
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
LTB-SA7 low dose, 1 vaccinationEXPERIMENTALThe candidate toxoid vaccine (LTB-SA7) is administered once, 1 month later participant receives a placebo.
LTB-SA7 low dose, 2 vaccinationsEXPERIMENTALThe candidate toxoid vaccine (LTB-SA7) is administered twice, 1 month apart.
LTB-SA7 medium dose, 1 vaccinationEXPERIMENTALThe candidate toxoid vaccine (LTB-SA7) is administered once, 1 month later participant receives a placebo.
LTB-SA7 medium dose, 2 vaccinationsEXPERIMENTALThe candidate toxoid vaccine (LTB-SA7) is administered twice, 1 month apart.
LTB-SA7 high dose, 1 vaccinationEXPERIMENTALThe candidate toxoid vaccine (LTB-SA7) is administered once, 1 month later participant receives a placebo.
LTB-SA7 high dose, 2 vaccinationsEXPERIMENTALThe candidate toxoid vaccine (LTB-SA7) is administered twice, 1 month apart.
PlaceboPLACEBO_COMPARATORParticipant receives placebo twice, 1 month apart.

Interventions

NameTypeDescription
LTB-SA7BIOLOGICALLTB-SA7 is a toxoid based vaccine consisting of five components including seven toxoids formulated with Alhydrogel.
PlaceboBIOLOGICALSodium Phosphate with Sodium Chloride
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Eligibility Criteria

Age Range18 Years to 50 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: 1. Good general health by medical history, laboratory findings and physical examination as judged by the investigator before receiving the first injection. 2. Participant who is willing and able to comply with the requirements of the protocol (e.g., completion of the diary forms...

Countries:United States
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Recent Changes (Last 90 Days)

MEDIUMSep 3, 2026NCT06719219TRIAL_REMOVED: changed
MEDIUMSep 3, 2026NCT06719219TRIAL_REMOVED: changed
MEDIUMSep 3, 2026NCT06719219TRIAL_REMOVED: changed

Frequently asked questions about LTB-SA7

What is LTB-SA7 used for?

LTB-SA7 is an investigational monoclonal antibody being developed for the prevention of Staphylococcus (S.) aureus infection. It is currently in Phase 1 clinical development and is not yet approved by regulatory authorities.

Who makes LTB-SA7?

LTB-SA7 is being developed by Eli Lilly and Company, a pharmaceutical company traded on the NYSE under the ticker symbol LLY. The drug is currently in Phase 1 clinical development.

What phase is LTB-SA7 in?

LTB-SA7 is in Phase 1 clinical development. A first-in-human trial has been completed, and the drug remains investigational. It has not been approved by the FDA or any other regulatory agency.

What clinical trials is LTB-SA7 in?

LTB-SA7 has one completed clinical trial, NCT06719219, which was a first-in-human study assessing safety and immunogenicity against Staphylococcus aureus. The trial enrolled 129 participants in the United States and was randomized, double-blind, and placebo-controlled.

Is LTB-SA7 a vaccine?

LTB-SA7 is described as a monoclonal antibody, though its clinical trial title refers to it as a vaccine against Staphylococcus aureus. The completed Phase 1 trial assessed safety and immunogenicity in healthy volunteers.