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Life sciences · Observational Study
ClinicalTrials.gov · September 23, 2026
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Observational Study.
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Registry record from ClinicalTrials.gov (NCT07325851). This is a study registration, not published results. Lead sponsor: Bernardino Clavo, MD, PhD. Recruitment status: RECRUITING. Study type: OBSERVATIONAL. Enrollment: 120 participants (ESTIMATED). Conditions: Chemotherapy-Induced Peripheral Neuropathy, Radiation Toxicity, Chronic Pain, Delayed Wound Healing, Refractory Symptoms. Interventions: PROCEDURE: Ozone Therapy. Primary outcome measures: Change from Baseline in Health-Related Quality of Life by the "EQ-5D-5L" Questionnaire (at the end of ozone therapy). , At the end of ozone therapy (approx. week 16).. Brief summary: The main objective of this study is to analyze the impact on the health-related quality of life of patients with refractory symptoms who have been referred to the Dr. Negrín University Hospital Chronic Pain Unit for adjuvant palliative treatment with ozone therapy between January 2026 and December 2029. Additionally, the study aims to evaluate several specific symptoms, hyperspectral and thermal images, non-invasive clinical parameters related to the Autonomic Nervous System (such as heart rate variability, electrochemical skin conductance, and vibration perception thresholds), oxidative stress and inflammatory parameters, and gut microbiota composition.