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Study identifier: NCT06799351 Synced from ClinicalTrials.gov · July 28, 2026
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Gut Microbiome Profiles in Patients with Chemotherapy-induced Neuropathy in the RCT OzoParQT (NCT06706544).

Condition: Chemotherapy Induced Peripheral Neuropathy (CIPN) · Paresthesia · Numbness  ·  Sponsor: Bernardino Clavo, MD, PhD

PhasePhase 2/Phase 3
Planned participants42
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Chemotherapy-induced peripheral neuropathy (CIPN) is a common and debilitating side effect of chemotherapy (CT), often requiring dose reductions or treatment interruptions, which can compromise efficacy of the planned CT (limiting its efficacy). Additionally, CIPN usually decreases patients' quality of life. Unfortunately, effective treatments for CIPN are limited. Emerging evidence suggests potential benefits of rectal ozone therapy and points to a possible role of the gut microbiome in CIPN development and treatment response. This observational study, ancillary to the randomized clinical trial (RCT) OzoParQT (NCT06706544), investigates the relationship between gut microbiome composition and CIPN severity in patients receiving rectal ozone therapy. Primary Objectives: To evaluate if gut microbiome profiles differ between patients: 1. with and without symptomatic improvement of CIPN. 2. receiving rectal ozone therapy and those receiving placebo. Secondary Objectives: To evaluate the relationship between gut microbiome composition and: 1. Health-related quality of life, 2. Anxiety and depression, 3. Biochemical markers of oxidative stress and inflammation. Main Trial Endpoints. Changes from baseline at the end of ozone therapy (week 16) in: * Gut microbiome profile * Patient-reported numbness and tingling * Neuropathy severity (QLQ-CIPN20 scale) * Paresthesia toxicity grade (CTCAE v.5.0) Secondary Trial Endpoints. Changes from baseline at the end of ozone therapy …

This description comes directly from the study's public registry record.

Talk to the study team

Bernardino Clavo, MD, PhD  ·  34928449278  ·  bernardinoclavo@gmail.com

Francisco Rodríguez-Esparragón, BSc, PhD  ·  34928449288  ·  afrodesp@gmail.com

Always discuss trial participation with your own doctor first.

Locations (1)

Hospital Universitario de Gran Canaria Dr. Negrín, (FIISC)Las Palmas, Las Palmas, SpainRecruiting

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Source record: clinicaltrials.gov/study/NCT06799351