Recent Updates
Recently added Catalysts

SPR741

Phase 1

Healthy Volunteers | Small molecule | Other |Spero Therapeutics, Inc.|Last Updated: Jan 5, 2018

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
RandomizedDouble-BlindCONTROLLEDBiomarker
Total Trials2
Total Enrollment91
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03376529Phase 1 Study to Evaluate DDI, PK, Safety, Tolerability of SPR741PHASE1 COMPLETED 27Nov 10, 2017Dec 20, 2017Jan 5, 20181 United Kingdom
NCT03022175A First in Human Study of the Safety and Tolerability of Single and Multiple Doses of SPR741 in Healthy VolunteersPHASE1 COMPLETED 64Dec 1, 2016Sep 1, 2017Oct 5, 20171 Australia
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
Pharmacokinetics: Maximum concentration (Cmax)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Pharmacokinetics: Area under the concentration-time curve from time 0 to last measurable time-point (AUC0-t)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Pharmacokinetics: Area under the concentration-time curve from time 0 to infinity (AUC0-inf)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Pharmacokinetics: Time to maximum concentration (Tmax)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Pharmacokinetics: Terminal Elimination Rate Constant (kel)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Pharmacokinetics: Terminal half-life (t1/2)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Pharmacokinetics: Terminal clearance (CL)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Pharmacokinetics: Volume of distribution (Vd)
Days 1 to 2, Days 4 to 5, Days 7 to 8

Blood draws will be taken pre-dose (within 10 minutes), 30 minutes following the start of infusion, end of infusion and at 75, 90, 105, and 120 minutes, 4, 8, 12, and 24 hours following start of infusion.

Safety measures: adverse events
SAD: 5 to 7 days MAD: 21 to 23 days

The frequency and type of adverse events

Safety measures: clinical laboratory testing
SAD: Day -1 to day 7; MAD: Day -1 to day 21

Clinical laboratory testing - change from baseline to end of study visit

Safety measures: pulse rate
SAD: Day -1 to day 7; MAD: Day -1 to day 21

Change from baseline to end of study visit

Safety measures: EKG
SAD: 5 to 7 days MAD: 21 to 23 days

Change from baseline to end of study visit

Safety measures: respiratory rate
SAD: Day -1 to day 7; MAD: Day -1 to day 21

Change from baseline to end of study visit

Safety measures: blood pressure
SAD: Day -1 to day 7; MAD: Day -1 to day 21

Change from baseline to end of study visit

Secondary Endpoints
Safety measures: adverse events (AEs)
Day -1 to Day 9
Safety measures: Summary of type and frequency of concomitant medication
Day -1 to Day 9
Safety measures: change in temperature (C/F)
Day -1 to Day 9
Unlock Study Endpoints
Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
SPR741/Ceftazidime (N=9)EXPERIMENTALNine (9) participants will be enrolled and assigned to receive SPR741 400 mg IV over 1 hour, SPR741 400 mg IV over 1 hour + ceftazidime1.0 gram IV over 1 hour, and ceftazidime 1.0 gram IV over 1 hour in a randomized sequence. One treatment will be administered during each of 3 dose periods within the assigned treatment arm.
SPR741/Piperacillin/tazobactam (N=9)EXPERIMENTALNine (9) participants will be enrolled and assigned to receive SPR741 400 mg IV over 1 hour, SPR741 400 mg IV over 1 hour + piperacillin/tazobactam 4.5 grams IV over 1 hour, and piperacillin/tazobactam 4.5 grams IV over 1 hour in a randomized sequence. One treatment will be administered during each of 3 dose periods within the assigned treatment arm.
SPR741/Aztreonam (N=9)EXPERIMENTALNine (9) participants will be enrolled and assigned to receive SPR741 400 mg IV over 1 hour, SPR741 400 mg IV over 1 hour + aztreonam 1.0 gram IV over 1 hour, and aztreonam 1.0 gram IV over 1 hour in a randomized sequence. One treatment will be administered during each of 3 dose periods within the assigned treatment arm.
SPR741EXPERIMENTALSPR741 is a novel chemical entity known as a potentiator that specifically interacts with the outer membrane of Gram-negative bacteria to increase the membrane's permeability. This increase in permeability allows Gram-positive antibiotics to enter and kill the cell. SAD cohorts: Subjects will receive single doses of SPR741 over 60 minute IV infusion. Planned doses to be studied are 5, 15, 50, 100, 200, 400, 600 and 800 mg. MAD cohorts: Subjects will receive SPR741 over 60 minute IV infusion three times a day (TID). Four dose groups will be studied. Doses will be determined by assessing SAD cohort data.
PlaceboPLACEBO_COMPARATORThe placebo used during this study is normal saline (0.9% sodium chloride for injection). SAD: Subjects will receive single infusions of placebo (0.9% sodium chloride for injection) over 60 minutes. MAD: Subjects will receive TID infusions of placebo over 60 minutes for 14 days
Interventions
NameTypeDescription
SPR741DRUG400 mg IV over 1 hour
CeftazidimeDRUG1.0 gram IV over 1 hour
Piperacillin/tazobactamDRUG4.5 grams IV over 1 hour
AztreonamDRUG1.0 gram IV over 1 hour
PlaceboDRUG0.9% sodium chloride for injection. SAD: Two participants in each cohort will receive matching placebo. MAD: Two participants in each cohort will receive matching placebo.
Unlock Study Design Details
Eligibility Criteria
Age Range18 Years — 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: 1. Healthy adult males and/or females (of non-childbearing potential), 18 to 55 years of age (inclusive) at the time of screening; 2. BMI ≥ 18.5 and ≤ 29.9 (kg/m2) and weight between 55.0 and 100.0 kg (inclusive); 3. Medically healthy without clinically significant abnormalities...

Countries:United KingdomAustralia
Unlock Eligibility Criteria