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Retosiban for Infusion

Phase 1

Obstetric Labour, Premature | Small molecule | Endocrine |GSK plc|Trials Updated: May 9, 2017

Retosiban for Infusion target and mechanism

Molecular targetOXTR
Target classAntagonist
ModalitySmall molecule

Also known as Retosiban solution for Infusion

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment32

FDA Designations

No designations recorded

Retosiban for Infusion clinical trials

Retosiban for Infusion · 1 trial · 1 indication

Phase 1 1
NCT02377414Study to Investigate the Pharmacokinetics (PK), Safety and Tolerability of Retosiban in Healthy Japanese WomenObstetric Labour, Premature
COMPLETED32 Analytics
PHASE1COMPLETED
Study to Investigate the Pharmacokinetics (PK), Safety and Tolerability of Retosiban in Healthy Japanese Women
Obstetric Labour, PrematureUnlock trial analytics

Study Endpoints

Primary Endpoints

Composite of PK parameters of retosiban administered by intravenous infusion to healthy adult Japanese and Caucasian women of child-bearing potential: AUC, Cmax, t1/2 and clearance of retosiban
Pre-dose, 0.5 h, 1 h, 2 h, 4 h, 8 h, 12 h, 18 h, 24 h (just before dose increase), 24.5 h, 25 h, 26 h, 28 h, 36 h, 42 h, 48 h, 48.5 h, 49 h, 50 h, 52 h, 54 h, 56 h and 60 h post start of the infusion

PK parameters will include: area under concentration-time curve (AUC), maximum observed concentration (Cmax), terminal phase half-life (t1/2) and clearance (CL) of retosiban

Composite of PK parameters of retosiban and its major inactive metabolite (GSK2847065) in healthy adult Japanese and Caucasian women of child-bearing potential: AUC, Cmax, t1/2
Pre-dose, 0.5 h, 1 h, 2 h, 4 h, 8 h, 12 h, 18 h, 24 h (just before dose increase), 24.5 h, 25 h, 26 h, 28 h, 36 h, 42 h, 48 h, 48.5 h, 49 h, 50 h, 52 h, 54 h, 56 h and 60 h post start of the infusion

AUC, Cmax, t1/2

Secondary Endpoints

Number of subjects with adverse events (AEs) and serious adverse events (SAEs)
Up to 13 days
Composite of clinical laboratory assessments
Up to 13 days
Vital sign assessment as a measure of safety
Up to 13 days
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort 1: Retosiban/placeboEXPERIMENTALEach subject in cohort 1 will receive an intravenous (IV) bolus infusion of 6 milligrams (mg) retosiban or placebo over 5 minutes, followed by a continuous infusion of 6 milligram per hour (mg/h) retosiban or placebo for 24 h. At 24 h of dosing, an additional 6 mg retosiban or placebo will be administered over 5 minutes followed by a 12 mg/h infusion over the next 24 h, for a total time of infusion of 48 h. Subjects administered with placebo will receive an equal volume of normal saline as an IV bolus as well as an equal rate of continuous infusion of normal saline as of retosiban.
Cohort 2: RetosibanEXPERIMENTALEach subject in cohort 2 will receive a bolus infusion of 6 mg retosiban over 5 minutes, followed by a continuous infusion of 6 mg/h retosiban for 24 h. At 24 h of dosing, an additional 6 mg retosiban will be administered over 5 minutes followed by a 12 mg/h infusion over the next 24 h, for a total time of infusion of 48 h.

Interventions

NameTypeDescription
Retosiban solution for InfusionDRUGRetosiban will be supplied as clear, colorless IV solution for infusion in 5 mL vial with a unit dose strength of 15 milligrams per milliliter (mg/mL) (each 5 mL vial contains 75 mg retosiban), dosed at up to 300 mg over 48 h infusion
PlaceboDRUGPlacebo will be supplied as a clear, colorless IV solution for infusion with a unit dose strength of 0.9% sodium chloride (NaCl) normal saline
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Eligibility Criteria

Age Range20 Years to 45 Years
SexFEMALE
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Subjects who are between 20 and 45 years and of age, inclusive at the time of signing the informed consent form. * Japanese, defined as being born in Japan, having four ethnic Japanese grandparents, holding a Japanese passport or identity papers and being able to speak Japanes...

Countries:United States
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Frequently asked questions about Retosiban for Infusion

What is Retosiban for Infusion?

Retosiban for Infusion is an investigational small molecule developed by GSK plc for the management of premature obstetric labour. It is a Phase 1 clinical candidate and has not been approved for marketing. The compound is also referred to as Retosiban solution for Infusion.

What is Retosiban for Infusion used for?

Retosiban for Infusion is being studied for premature obstetric labour, a condition involving the onset of labour before term. The program is in Phase 1 development, so the drug is investigational and is not yet available as a treatment outside of clinical research.

What does Retosiban for Infusion target?

Retosiban for Infusion targets OXTR, the oxytocin receptor. It acts as an antagonist at this receptor, meaning it blocks receptor signaling rather than activating it. This target class is relevant to uterine contractility, which underlies its study in premature obstetric labour.

Who is developing Retosiban for Infusion?

Retosiban for Infusion is being developed by GSK plc, which trades under the ticker GSK. GSK is the sponsor of the clinical program evaluating the compound in premature obstetric labour.

What phase is Retosiban for Infusion in?

Retosiban for Infusion is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA or any other regulator. The program has one completed Phase 1 trial and no active trials at this time.

What clinical trials is Retosiban for Infusion in?

Retosiban for Infusion has been evaluated in one completed Phase 1 trial, NCT02377414, titled Study to Investigate the Pharmacokinetics (PK), Safety and Tolerability of Retosiban in Healthy Japanese Women. The randomized, double-blind, controlled study enrolled 32 healthy female volunteers aged 20 years and older in the United States.

Is Retosiban for Infusion the same as Retosiban solution for Infusion?

Yes, Retosiban for Infusion and Retosiban solution for Infusion refer to the same investigational product from GSK plc. The two names describe the same small molecule formulation studied in premature obstetric labour, so readers searching either term are looking at the same asset.