← Back to Clinical Trials
Recruiting NCT03612193

NCT03612193 Role of the Gut Microbiome in Complex Regional Pain Syndrome

◆ AI Clinical Summary
Plain-language summary for patients
Clinical Trial Summary
NCT ID NCT03612193
Status Recruiting
Phase
Sponsor Washington University School of Medicine
Condition Complex Regional Pain Syndromes
Study Type OBSERVATIONAL
Enrollment 140 participants
Start Date 2018-12-19
Primary Completion 2027-07

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type OBSERVATIONAL

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

This is an observational study. You will not receive an experimental treatment; researchers will collect data based on your existing condition or standard treatment.

This trial targets 140 participants in total. It began in 2018-12-19 with a primary completion date of 2027-07.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The objective of this prospective, observational study is to determine the association between the composition of the gut microbiota and the severity and persistence of Complex Regional Pain Syndrome symptoms (Study A). The objective of Study B, a longitudinal study of microbiota biomarkers of patients with newly diagnosed CRPS is to determine if the researchers can predict which patients are more likely to recover compared to those who do not. A secondary objective of both studies is to examine cognitive flexibility in relation to outcomes (study A and B).

Eligibility Criteria

Study A: Cross-sectional study Inclusion criteria, cases: * Adults over the age of 18 * Current (\< 1 year duration) or former (\> 1 year) diagnosis of Complex Regional Pain Syndrome by the Budapest criteria * English as primary language * able to consent Inclusion criteria, controls * Adults over age of 18 * Cohabitant of person with current or former diagnosis of CRPS Study B: Longitudinal Study Inclusion criteria, cases: * Adults over the age of 18 * Recent diagnosis (\<6 months) of Complex Regional Pain Syndrome by the Budapest criteria * English as primary language * able to consent Inclusion criteria, controls * Adults over age of 18 * Cohabitant of person with diagnosis of CRPS Study A and B: Exclusion criteria, cases and controls: * Unwilling to participate in the study * Lives alone * Current use of probiotics and unwilling to stop for 1 week prior to stool sample * Pregnant or lactating * Vegan diet

Contact & Investigator

Central Contact

Lara Crock, MD PhD

✉ crockl@wustl.edu

📞 314-546-3882

Principal Investigator

Lara Crock, MD PhD

PRINCIPAL INVESTIGATOR

Washington University School of Medicine

Frequently Asked Questions

Who can join the NCT03612193 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Complex Regional Pain Syndromes. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT03612193 currently recruiting?

Yes, NCT03612193 is actively recruiting participants. Contact the research team at crockl@wustl.edu for enrollment information.

Where is the NCT03612193 trial being conducted?

This trial is being conducted at St Louis, United States.

Who is sponsoring the NCT03612193 clinical trial?

NCT03612193 is sponsored by Washington University School of Medicine. The principal investigator is Lara Crock, MD PhD at Washington University School of Medicine. The trial plans to enroll 140 participants.

Related Trials

ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: September 2026  ·  Data Methodology