Can your genes predict painkiller side effects after C-Section?
NCT ID NCT05380531
First seen Jun 27, 2026 · Last updated Sep 11, 2026 · Updated 2 times
Summary
This study aims to improve pain relief after cesarean sections by looking at how a mother's genes affect her response to opioids. Researchers will enroll 700 women and track genetic markers linked to side effects like breathing problems and nausea. The goal is to create a personalized pain management plan that reduces risks for both mothers and their breastfeeding infants.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 700 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2022
- Expected to finish
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Oct 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Female participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: Adult women (\>18 yr) All races American Society of Anesthesiologists Classification (ASA) physical status: 1 to 3 undergoing elective Cesarean section that are willing to receive in-patient opioids. Exclusion Criteria: 1. Health conditions including uncontrolled diabetes (gestational or pre-existing) or hypertension (pre-eclampsia, eclampsia, or chronic) 2. Any history of opioid misuse before or during pregnancy-per self-report and clinical notes 3. Preoperative severe pain and opioid use/misuse, allergy to oxycodone 4. Allergy to oxycodone 5. Significant neurological disorders, liver and renal diseases
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
4 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Riley Children's Hospital- Clinics / Labor and Delivery Unit
RECRUITINGIndianapolis, Indiana, 46202, United States
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UPMC Magee Women's Hospital
NOT_YET_RECRUITINGPittsburgh, Pennsylvania, 15213, United States
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University of Pittsburgh
RECRUITINGPittsburgh, Pennsylvania, 15260, United States
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Washington University Hospital
RECRUITINGSt Louis, Missouri, 63110, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- One 2-Hour class may help new mothers manage Post-Cesarean pain
- Prisons as HIV prevention hubs: can opioid treatment reach more people behind bars?
- A single class may help new mothers avoid Long-Term pain after C-Section
- Could a 20% lower anesthetic dose make C-Sections safer?
- Can a single dose extend Post-Cesarean pain relief?
- Which nerve block keeps lungs stronger after chest surgery?