ClinicalTrials.gg
CompletedNCT05856747Updated Mar 27, 2024

A Study to Compare Two Bioanalytical Assays for Tebipenem

A Phase 1 interventional study of TBP-PI-HBr in Healthy Volunteers, sponsored by Spero Therapeutics. Completed at 1 site in United States. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-03-27.

Sponsored by Spero Therapeutics · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jun 2023, 3 years 5 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
18 Years to 55 Years
Sex
All
01

Study summary

The primary purpose of the study is to compare the concentrations of tebipenem (TBP), the active moiety of tebipenem pivoxil hydrobromide (TBP-PI-HBr), as determined by two bioanalytical assays, a whole blood assay and a plasma assay, following a single oral dose of TBP-PI-HBr 600 milligram (mg) tablets in healthy adult participants.

02

Conditions studied

  • Healthy Volunteers
03

In context

Lead sponsor

Spero Therapeutics is the lead sponsor of 22 studies on the registry; none are open to participants now.

Of its 15 completed or terminated interventional studies of FDA-regulated products, 3 (20%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • (BMI) ≥18.0 and ≤32.0 kilograms per meter square (kg/m\^2) at Screening visit.
  • Medically healthy with no medical history, abnormalities in physical examination, laboratory variables, vital signs or (ECG) at the time of Screening visit and Check-in (Day-1), as deemed by the investigator or designee.
  • Have suitable venous access for repeated blood sampling.

Exclusion criteria

Exclusion Criteria:

  • Any medical history or observations at the time of Screening visit or Check-in (Day -1) not specifically excluded in other criteria that, in the opinion of the investigator or designee, may confound the results of the study, compromise the safety of the participant or otherwise render the participant unsuitable for participation.
  • Use/receipt of any prescription or non-prescription medication, herbal products, vitamins or vaccines within 14 days (or 5 half-lives whichever is longer) prior to Check-in (Day -1).
  • Positive coronavirus disease (COVID-19) screening test using polymerase chain reaction (PCR) or antigen assay at Screening visit or Check-in (Day -1).
  • Donation or significant blood loss of more than 500 milliliter (mL) of blood within 56 days prior to enrollment, or receipt of a blood transfusion within 1 year prior to enrollment; plasma donation within 7 days prior to dosing.
  • with interval by Fridericia (QTcF) interval duration equal or greater than 450 milliseconds (msec) for males and 470 msec for females obtained after at least 5 minutes in a supine or semi-recumbent position at quiet rest at Screening visit or Check-in (Day -1).

Other inclusion and exclusion criteria as per protocol may apply.

Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Experimental
    TBP-PI-HBr 600 mg

    Healthy participants meeting eligibility criteria will receive a single oral dose of TBP-PI-HBr 600 mg tablets (2 x 300 mg) on Day 1 under fasted conditions.

    Drug: TBP-PI-HBr

Interventions

  • TBP-PI-HBr tablets.

    Also known as: SPR994

06

What researchers measure

Primary outcomes

  1. Percentage of Tebipenem (TBP) Samples With Converted (From Whole Blood Measurements) and Measured Plasma Concentrations That Have a Difference not Exceeding ±20% of the Mean of the Concentrations

    Time frame: Pre dose and at multiple time points post dose on Day 1

  2. Area Under the Plasma Concentration-time Curve Extrapolated to Infinity (AUC0-∞) of TBP

    Time frame: Pre dose and at multiple time points post dose on Day 1

  3. Maximum Plasma Concentration (Cmax) of TBP

    Time frame: Pre dose and at multiple time points post dose on Day 1

Secondary outcomes

  1. Number of Participants With Adverse Events (AEs)

    Time frame: From first dose of study drug up to Day 6

07

Study locations

1 site
  • BioPharma Services
    Creve Coeur, Missouri 63141, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from May 2023 to primary completion in Jun 2023, 0 months.

How these figures are worked out, and which studies are left out of them.

Registered
May 3, 2023
First posted
May 12, 2023
StartActual
May 4, 2023
Primary completionActual
Jun 1, 2023
CompletionActual
Jun 1, 2023
Last update
Mar 27, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 27, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05856747
Lead sponsor
Spero Therapeutics
Responsible party
Sponsor
First posted
May 12, 2023
Start date
May 4, 2023
Primary completion
Jun 1, 2023
Completion
Jun 1, 2023
Last update
Mar 27, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2023. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Tebipenem

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