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Small study measures antibiotic levels in pregnancy to stop syphilis in newborns

NCT ID NCT05309928

Knowledge-focused Sponsor: University of Alabama at Birmingham Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at how the antibiotic amoxicillin works in pregnant women to help prevent passing syphilis to their babies. Researchers measured drug levels in the blood of 13 pregnant women during the second and third trimesters and after birth. The goal was to find the right dose to effectively treat syphilis in pregnancy.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

13 people

The number who actually took part.

Started

Aug 2023

Finished

Jun 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

16 to 50 years

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Pregnant, engaged in prenatal care with a medical provider (at least one visit) 2. Estimated gestational age 24-34 weeks 3. Able to provide informed consent 4. English speaking Exclusion Criteria: 1. Receipt of amoxicillin within the past 7 days. (Routine GBS prophylaxis with ampicillin or other antibiotic and routine surgical prophylaxis prior to cesarean with cephalexin and azithromycin 500 mg IV is allowed). 2. Known hypersensitivity or intolerance of amoxicillin, penicillin, other beta lactam or cephalosporin antibiotics. 3. Known renal impairment (serum creatinine ≥1.2 mg/dL). 4. Active concomitant medications known to interact with amoxicillin: allopurinol, methotrexate, mycophenolate, immune checkpoint inhibitors (ie. pembrolizumab), tetracyclines (ie. doxycycline), vitamin K antagonists (ie. warfarin), aminoglycosides (ie. gentamicin).

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Conditions

The condition(s) this trial relates to.

pregnancy disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Pregnancy related

Contacts and locations

Locations

  • UAB

    Birmingham, Alabama, 35294, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.