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NCT05966688 · ClinicalTrials.gov registry record · Phase 1

A Study to Evaluate the Effect of Co-administration on the Pharmacokinetics of SPR720, Azithromycin, and Ethambutol in Healthy Participants

A Phase 1 study of Healthy Volunteers, sponsored by Spero Therapeutics.

Completed
Registry status
Phase 1
Development phase
39
Enrollment target
1
Study location

NCT05966688: Completed Phase 1 study of Healthy Volunteers, sponsored by Spero Therapeutics.

NCT05966688 is a Phase 1 study of Healthy Volunteers that has completed, run by Spero Therapeutics. The registered enrollment target is 39 participants, below the 482-participant average among 283 other Healthy Volunteers trials with a reported enrollment target (92% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT05966688, a Phase 1 study of Healthy Volunteers, has completed, sponsored by Spero Therapeutics.

COMPLETED
Registry status
Phase 1
Development phase
39 participants
Enrollment target
1
Study location

Study Summary

The primary purpose of this study is to evaluate the pharmacokinetics (PK) of SPR720, azithromycin, and ethambutol, administered separately and co-administered, in healthy adult participants.

Conditions Studied

Interventions

  • DRUG Azithromycin
  • DRUG Ethambutol
  • DRUG SPR720

Study Locations (1)

Ohio

  • Medpace Clinical Pharmacology Unit - Cincinnati

Trial Details

FieldValue
Enrollment Target 39 participants
Start Date 2023-08-04
Est. Completion 2024-02-04
Phase Phase 1
Spero Therapeutics

14 total trials

What the finished NCT05966688 record still lists

NCT05966688 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 39 participants, a relatively small participant target, below the 482-participant average among 283 other Healthy Volunteers trials with a reported enrollment target (92% lower).

The record links to 1 condition, with Healthy Volunteers appearing as the primary indexed condition, and to 3 interventions - of which Azithromycin is the first listed.

NCT05966688 reports a single indexed study location in Ohio.

Frequently Asked Questions

What is clinical trial NCT05966688 about?

NCT05966688 is a clinical study titled "A Study to Evaluate the Effect of Co-administration on the Pharmacokinetics of SPR720, Azithromycin, and Ethambutol in Healthy Participants". The primary purpose of this study is to evaluate the pharmacokinetics (PK) of SPR720, azithromycin, and ethambutol, administered separately and co-administered, in healthy adult participants.

What is the current status of trial NCT05966688?

This trial is currently completed. It is a Phase 1 study. The enrollment target is 39 participants. The study started on 2023-08-04. Estimated completion is 2024-02-04.

What conditions does trial NCT05966688 study?

This clinical trial studies the following conditions: Healthy Volunteers.

What interventions are being tested in trial NCT05966688?

The interventions under investigation include: Azithromycin (DRUG), Ethambutol (DRUG), SPR720 (DRUG).

Who is sponsoring clinical trial NCT05966688?

This trial is sponsored by Spero Therapeutics, which has 14 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT05966688 being conducted?

This trial has 1 study location across Ohio. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for Healthy Volunteers

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT05966688's enrollment target sits among peer trials

39 161st of 283 higher than 121 of 283 other Healthy Volunteers trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Healthy Volunteers trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT05966688, the US trial registry maintained by the National Library of Medicine. NCT05966688 (small enrollment · single site footprint · completed) retrieved and formatted by PlainTrial, see methodology.