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GS-5806

Phase 2

Respiratory Syncytial Virus Infections | Small molecule | Infectious Disease |Gilead Sciences, Inc.|Trials Updated: Nov 28, 2018

GS-5806 development status

Highest phase Phase 2
Registered trials 7 across 1 sponsor since Dec 2012

GS-5806 target and mechanism

ModalitySmall molecule

Also known as Presatovir

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials6
Total Enrollment647

FDA Designations

No designations recorded

GS-5806 clinical trials

GS-5806 · 6 trials · 5 indications

Phase 2 5Phase 1 1
NCT02534350Presatovir in Lung Transplant (LT) Recipients With Respiratory Syncytial Virus (RSV) InfectionRespiratory Syncytial Virus (RSV)
COMPLETED61 Analytics
NCT02254421Presatovir in Hematopoietic Cell Transplant Recipients With Respiratory Syncytial Virus (RSV) Infection of the Lower Respiratory TractRespiratory Syncytial Virus Infection
COMPLETED60 Analytics
NCT02254408Presatovir in Hematopoietic Cell Transplant Recipients With Respiratory Syncytial Virus Infection of the Upper Respiratory TractRespiratory Syncytial Virus
COMPLETED189 Analytics
NCT02135614Efficacy, Pharmacokinetics, and Safety of Presatovir in Hospitalized Adults With Respiratory Syncytial Virus (RSV) InfectionRespiratory Syncytial Virus Infection
COMPLETED189 Analytics
NCT01756482Safety and Efficacy Study of GS-5806 in Healthy Volunteers Infected With Respiratory Syncytial Virus (RSV)Respiratory Syncytial Virus Infections
COMPLETED140 Analytics
PHASE2COMPLETED
Presatovir in Lung Transplant (LT) Recipients With Respiratory Syncytial Virus (RSV) Infection
Respiratory Syncytial Virus (RSV)Unlock trial analytics
PHASE2COMPLETED
Presatovir in Hematopoietic Cell Transplant Recipients With Respiratory Syncytial Virus (RSV) Infection of the Lower Respiratory Tract
Respiratory Syncytial Virus InfectionUnlock trial analytics
PHASE2COMPLETED
Presatovir in Hematopoietic Cell Transplant Recipients With Respiratory Syncytial Virus Infection of the Upper Respiratory Tract
Respiratory Syncytial VirusUnlock trial analytics
PHASE2COMPLETED
Efficacy, Pharmacokinetics, and Safety of Presatovir in Hospitalized Adults With Respiratory Syncytial Virus (RSV) Infection
Respiratory Syncytial Virus InfectionUnlock trial analytics
PHASE2COMPLETED
Safety and Efficacy Study of GS-5806 in Healthy Volunteers Infected With Respiratory Syncytial Virus (RSV)
Respiratory Syncytial Virus InfectionsUnlock trial analytics

Study Endpoints

Primary Endpoints

Time-Weighted Average Change in Viral Load From Day 1/Baseline Through Day 7 in Participants in the Full Analysis Set
Up to 7 days
Time-Weighted Average Change in Viral Load From Day 1/Baseline Through Day 7 in a Subset of Participants in the Full Analysis Set Whose Duration of RSV Symptoms Prior to the First Dose of Study Drug is ≤ Median
Up to 7 days
Time-weighted Average Change in Nasal Respiratory Syncytial Viral (RSV) Load From Baseline to Day 9
Baseline to Day 9

The time-weighted average change, often referred to as the DAVG, provides the average viral burden change from baseline. The mean values presented were calculated using the ANCOVA model and are adjusted for baseline value and stratification factors.

Time-Weighted Average Change in Nasal Respiratory Syncytial Virus (RSV ) Viral Load From Baseline (Day 1) to Day 9
Baseline; Day 9

The time-weighted average change, often referred to as the DAVG, provides the average viral burden change from baseline. The mean values presented were calculated using the ANCOVA model and are adjusted for baseline value and stratification factor.

Percentage of Participants Who Developed a Lower Respiratory Tract Complication
Up to Day 28

A Lower Respiratory Tract Complication (LRTC) was defined as one of the below as determined by the adjudication committee: * Primary RSV lower respiratory tract infection (LRTI) * Secondary bacterial LRTI * LRTI due to unusual pathogens * Lower respiratory tract complication of unknown etiology

Time-Weighted Average Change in Respiratory Syncytial Viral (RSV) Load From Baseline to Day 5
Baseline to Day 5

The time-weighted average change, often referred to as the DAVG, provides the average viral burden change from baseline. The mean values presented were calculated using the ANCOVA model and are adjusted for baseline value and stratification factor.

Change in viral load measurements.
Post initial dose of GS-5806/placebo to Day 12

Area under the curve for viral load as measured by qRT-PCR assay from the first viral load measurement post initial dose of GS-5806 or placebo through day 12.

Urine and fecal recovery of total [14C]-radioactivity
22 days

The primary outcome measure of this study is the urine and fecal recovery of total \[14C\]-radioactivity.

Secondary Endpoints

Time-Weighted Average Change in FLU-PRO Score From Day 1/Baseline Through Day 7
Up to 7 days
Percent Change From Study Baseline in FEV1% Predicted Value
Baseline; Day 28
Number of Supplemental O2-Free Days Through Day 28
Up to Day 28
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PresatovirEXPERIMENTALPresatovir 200 mg (4 x 50 mg) on Day 1, followed by 100 mg (2 x 50 mg) from Day 2 to Day 14
PlaceboPLACEBO_COMPARATORPlacebo tablets for a total of 14 days
Presatovir placeboPLACEBO_COMPARATORParticipants will receive a single dose of presatovir placebo.
GS-5806EXPERIMENTALGS-5806, powder for oral solution
Sugar powder for oral solution in juicePLACEBO_COMPARATORSugar powder for oral solution
Intervention ArmEXPERIMENTALOne-time single dose of 50 mg radiolabeled GS-5806 administered orally in 3 capsules in the morning.

Interventions

NameTypeDescription
PresatovirDRUGTablets administered orally or via nasogastric (NG) tube once daily
PlaceboDRUGTablets administered orally or via NG tube once daily
Presatovir placeboDRUGPresatovir placebo tablets administered orally
GS-5806DRUGGS-5806, powder for oral solution
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites28

Key Inclusion Criteria: * Males and females ≥18 years of age who have received a LT (single or double) or heart/lung transplant \> 90 days prior to Screening * Confirmed to be RSV-positive by local polymerase chain reaction (PCR) testing (starting from when the upper or lower respiratory tract samp...

Countries:United StatesAustraliaBelgiumCanadaFranceGermanyNetherlandsUnited KingdomSouth KoreaSwedenSwitzerlandBrazilIsraelSingaporeSpainTaiwanItalyNew ZealandPoland
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Frequently asked questions about GS-5806

What is GS-5806 used for?

GS-5806 is an investigational small molecule being developed for the treatment of Respiratory Syncytial Virus (RSV) infections. It is currently in clinical development and has not been approved by regulatory authorities. The drug is being studied in healthy volunteers to evaluate its safety and efficacy against RSV infection.

Who makes GS-5806?

GS-5806 is being developed by Gilead Sciences, Inc., a biopharmaceutical company traded on NASDAQ under the ticker symbol GILD. The company is conducting clinical trials to evaluate the drug's safety and pharmacokinetics in healthy volunteers.

What phase is GS-5806 in?

GS-5806 is in Phase 1 clinical development. Two clinical trials have been completed: one Phase 1 study evaluating pharmacokinetics, metabolism, and excretion, and one Phase 2 study assessing safety and efficacy in healthy volunteers infected with RSV. The drug remains investigational.

What clinical trials is GS-5806 in?

GS-5806 has completed two clinical trials. NCT01756482 was a Phase 2 study in 140 healthy volunteers infected with RSV in the United Kingdom. NCT01801293 was a Phase 1 study in 8 healthy male volunteers in the United States evaluating pharmacokinetics, metabolism, and excretion.

Is GS-5806 the same as other RSV drugs?

GS-5806 is a distinct investigational small molecule developed by Gilead Sciences for Respiratory Syncytial Virus infections. No alternative names have been associated with this drug in clinical trial records. It is being studied separately from other RSV therapeutics.