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Terapia con ozono nella neuropatia periferica indotta da chemioterapia: RCT (O3NPIQ) (O3NPIQ)

22 settembre 2026 aggiornato da: Bernardino Clavo, MD, PhD

Efficacia e rapporto costo-efficacia dell'ozono terapia nei pazienti con dolore secondario a neuropatia periferica indotta da chemioterapia. Studio clinico randomizzato, in triplo cieco (O3NPIQ)

The main objective of this clinical trial is to evaluate the effectiveness and cost-effectiveness of adding ozone therapy to the clinical management of patients with pain secondary to chemotherapy-induced peripheral neuropathy

Panoramica dello studio

Stato

Reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

Chemotherapy-induced peripheral neuropathy (CIPN) decreases the quality of life of patients and can lead to a decrease and/or interruption of the chemotherapy treatment-limiting its effectiveness. The therapeutic measures for the CIPN are very limited in their number and efficacy.

Main Objectives: 1) To evaluate the clinical effect on the health-related quality of life (HRQOL) of adding ozone to the usual patient´s treatment with persistent pain because of CIPN. 2) Estimate the additional costs and evaluate the cost-effectiveness ratio.

Secondary Objectives: To evaluate the evolution of 3) oxidative stress and chronic inflammation through biochemical measurements; 4) anxiety and depression of patients; 5) the diagnostic and predictive value of hyperspectral imaging in the assessment of pain; 6) the acceptability of patients to a shared decision-making (SDM) tool.

METHODOLOGY: Randomized controlled trial (RCT) phase II-III, randomized, triple-blind; 42 patients with any kind of cancer treated with any kind of chemotherapy, with CIPN of grade > = 2 for > = 3 months.

TREATMENT: All patients will receive: usual treatment + 40 rectal insufflation sessions of O3/O2 in 16 weeks:

  • Ozone-Arm (n = 21): concentration of O3/O2 increasing from 10 to 30 μg/ml.
  • Control-placebo- Arm (n = 21): concentration of O3/O2 = 0 μg/ml.

Main Variables: At the end of treatment with O3/O2 the following variables will be analyzed: 1) "average pain" secondary to CIPN following the Brief Pain Inventory-Short Form (BPI-SF); 2) health-related quality of life (HRQOL) and utilities using EQ-5D-5L and SF-36 quality of life questionnaires; 3) Direct costs.

Secondary Variables: 3) biochemical parameters of oxidative stress and inflammation; 4) Hamilton scale for anxiety and depression; 5) hyperspectral images; 6) acceptability of patients to a shared decision-making (SDM) tool.

Assessments at weeks: 0 (baseline), 16 (end of O3/O2 insufflations, objective), and 28 (end of follow-up, control).

Length of treatment: 16 weeks.

Follow-up: 12 weeks after finishing O3/O2 insufflation.

Planned length of the clinical trial: 36 months.

Tipo di studio

Interventistico

Iscrizione (Stimato)

42

Fase

  • Fase 2
  • Fase 3

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Backup dei contatti dello studio

Luoghi di studio

    • Las Palmas
      • Las Palmas de Gran Canaria, Las Palmas, Spagna, 35016
        • Reclutamento
        • Complejo Hospitalario Materno Insular
        • Contatto:
      • Las Palmas de Gran Canaria, Las Palmas, Spagna, 35019
        • Reclutamento
        • Hospital Universitario de Gran Canaria Dr. Negrín
        • Contatto:
        • Sub-investigatore:
          • Saray Galván, MD
        • Sub-investigatore:
          • Francisco Rodríguez-Esparragón, BSc, PhD

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 18 anni a 100 anni (Adulto, Adulto più anziano)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

  • 1. Adults > = 18 years old.
  • 2. Any kind of cancer in any stage, treated with any kind of chemotherapy, and life expectancy > = 6 months.
  • 3. Clinical diagnosis of painful chemotherapy-induced peripheral neuropathy, toxicity Grade 2 or higher according to the Common Toxicity Criteria for Adverse Events (CTCAE) from the National Cancer Institute of EEUU, v.5.0, for > = 3 months and without the inclusion of new treatments for pain and/or neuropathy for > = 1 month.
  • 4. "Average pain" > = 3/10 according to the Brief Pain Inventory-Short Form (BPI-SF) > = 3 months beyond chemotherapy completion.
  • 5. Pregnant women cannot participate in the clinical trial.
  • 6. Before enrollment, women of childbearing potential should obtain a negative result in the serum or urine pregnancy test at the screening visit and accept the use of appropriate contraceptive methods at least from the 14 days prior to the first ozone therapy session up to 14 days after the last one.
  • 7. Patients who have signed and dated the study 's specific informed consent

Exclusion Criteria:

  • 1. Age < 18 years old.
  • 2. Pregnancy at the time of enrollment.
  • 3. Women with childbearing potential who are unwilling to perform a pregnancy test and/or employ adequate contraception from the 14 days prior to the first ozone therapy session up to 14 days after the last one.
  • 4. Clinical suspicion that peripheral neuropathy (compressive or diabetic neuropathy) in the same area prior to receiving neurotoxic chemotherapy.
  • 5. Psychiatric illness or social situations that would limit compliance with study requirements.
  • 6. Those who are unable to fill in the scales used to measure quality of life variables
  • 7. Specific liver enzymes [Aspartate Aminotransferase (AST), and Alanine Aminotransferase (ALT) > 5 times the upper limit of normal
  • 8. Increased creatinine > 3 times the upper limit of normal.
  • 9. Hemodynamically or clinically unstable patients or uncontrolled severe illness.
  • 10. Uncontrolled cancer disease.
  • 11. Leptomeningeal carcinomatosis.
  • 12. Life expectancy < 6 months
  • 13. Contraindication or disability for rectal ozone administration or to attend scheduled treatments.
  • 14. Known allergy to ozone.
  • 15.Patients who do not meet all the inclusion criteria.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Quadruplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Ozone Group

Drug: Ozone Ozone Group: Usual treatment + Ozone therapy (O3/O2) by rectal insufflation. O3/O2 concentration progressively increased from 10 to 30 μg/ml; 40 sessions in 16 weeks.

Other Names: O3

Ozone Group: Standard treatment + Ozone therapy (O3/O2) by rectal insufflation. O3/O2 concentration progressively increased from 10 to 30 μg/ml; 40 sessions in 16 weeks.

Altri nomi:
  • O3
Comparatore placebo: Control Group

Drug: Oxygen Control Group: Standard treatment + Oxygen (O2) by rectal insufflation. O3/O2 concentration = 0 μg/ml (only O2); 40 sessions in 16 weeks.

Other Names: O2

Control Group: Standard treatment + Oxygen (O2) by rectal insufflation. O3/O2 concentration = 0 μg/ml (only O2); 40 sessions in 16 weeks.

Altri nomi:
  • O2

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change from Baseline in "Average pain" according to the Brief Pain Inventory-Short Form (BPI-SF) (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Self-reported evaluation of 15 items to assess the severity of pain on daily functions in seven interference areas. From the 15 items, 11 items are scored from 0 ("No pain" or "Does not no interfere") to 10 ("Pain as bad as you can imagine" or "Completely interferes").

16 weeks
Direct Hospital Cost (at the end of ozone therapy)
Lasso di tempo: 16 weeks

The direct expenses incurred by the hospital in providing services (medication, tests, medical visits...) during the 16 weeks of ozone therapy (in euros).

16 weeks

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change from Baseline in quality of life by the "5-level, 5-dimension EuroQol" (EQ-5D-5L) questionnaire (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Self-reported evaluation of: a) 5 physical and emotional items scored in five levels, from 1 (best: I have no problem) to 5 (worst: I have extreme problem or I am unable to…) and b) additional self-assessment of health by a visual analogue scale (0 = worst health patient can imagine, 100 = best health patient can imagine)

16 weeks
Change from Baseline in quality of life by the "Short Form 36-item health survey" (SF-36v2) questionnaire (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Self-reported evaluation of 36 items (0 = worst, 100 = best). Final accumulated total range from 0 (worst) to 100 (best)

16 weeks
Change from Baseline in Biochemical parameters of oxidative stress (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Serum levels of superoxide dismutase, glutathione, glutathione peroxidase and free radicals

16 weeks
Change from Baseline in Biochemical parameters of inflammation (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Serum levels of pro-inflammatory interleukins and TNFalpha

16 weeks
Change from Baseline in Hyperspectral image of painful area (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Assessment of the percentage of reflectance for each wavelength

16 weeks
Change from Baseline in Levels of anxiety and depression according to the Hamilton scale (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Clinician-administered depression assessment scale with 17 items pertaining to symptoms of depression experienced over the past week. Each item is scored from 0 (better, no alteration) to 2 (worse level of alteration) for items with three options, or from or from 0 (better, no alteration) to 4 (worse level of alteration) for items with five options. Overall score is from 0 (better, no anxiety/depression) to 52 (worse, very severe anxiety/depression).

16 weeks
Change from Baseline in Nerve conduction studies in the painful area (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Assessment of nerve conduction velocity (in m/s)

16 weeks
Incidence of severe adverse events in accordance with the definition of the Council for International Organizations of Medical Sciences (at the end of ozone therapy)
Lasso di tempo: 16 weeks

Number of events that are fatal, life threatening, leading to or prolonging a stay in hospital, or resulting in severe disability

16 weeks
Change from Baseline in "Average pain" according to the Brief Pain Inventory-Short Form (BPI-SF) (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Self-reported evaluation of 15 items to assess the severity of pain on daily functions in seven interference areas. From the 15 items, 11 items are scored from 0 ("No pain" or "Does not no interfere") to 10 ("Pain as bad as you can imagine" or "Completely interferes")

28 weeks
Direct Hospital Cost (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

The direct expenses incurred by the hospital in providing services (medication, tests, medical visits...) during the 16 weeks of ozone therapy (in euros)

28 weeks
Change from Baseline in quality of life by the "5-level, 5-dimension EuroQol" (EQ-5D-5L) questionnaire (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Self-reported evaluation of: a) 5 physical and emotional items scored in five levels, from 1 (best: I have no problem) to 5 (worst: I have extreme problem or I am unable to…) and b) additional self-assessment of health by a visual analogue scale (0 = worst health patient can imagine, 100 = best health patient can imagine)

28 weeks
Change from Baseline in quality of life by the "Short Form 36-item health survey" (SF-36v2) questionnaire (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Self-reported evaluation of 36 items (0 = worst, 100 = best). Final accumulated total range from 0 (worst) to 100 (best)

28 weeks
Change from Baseline in Biochemical parameters of oxidative stress (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Serum levels of superoxide dismutase, glutathione, glutathione peroxidase and free radicals

28 weeks
Change from Baseline in Biochemical parameters of inflammation (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Serum levels of pro-inflammatory interleukins and TNFalpha

28 weeks
Change from Baseline in Hyperspectral image of painful area (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Assessment of the percentage of reflectance for each wavelength

28 weeks
Change from Baseline in Levels of anxiety and depression according to the Hamilton scale (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Clinician-administered depression assessment scale with 17 items pertaining to symptoms of depression experienced over the past week. Each item is scored from 0 (better, no alteration) to 2 (worse level of alteration) for items with three options, or from or from 0 (better, no alteration) to 4 (worse level of alteration) for items with five options. Overall score is from 0 (better, no anxiety/depression) to 52 (worse, very severe anxiety/depression)

28 weeks
Change from Baseline in Nerve conduction studies in the painful area (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Assessment of nerve conduction velocity (in m/s)

28 weeks
Incidence of severe adverse events in accordance with the definition of the Council for International Organizations of Medical Sciences (at 12 weeks after the end of ozone therapy)
Lasso di tempo: 28 weeks

Number of events that are fatal, life threatening, leading to or prolonging a stay in hospital, or resulting in severe disability

28 weeks

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Collaboratori

Investigatori

  • Cattedra di studio: Bernardino Clavo, MD, PhD, Dr. Negrín University Hospital, Las Palmas, Spain
  • Direttore dello studio: Pedro G Serrano-Aguilar, MD, PhD, Servicio de Evaluación. Servicio Canario de Salud. Spain
  • Investigatore principale: Delvys Rodríguez-Abreu, MD, Complejo Hospitalario Universitario Insular Materno Infantil, Las Palmas, Spain
  • Investigatore principale: Gustavo M Callico, Prof, PhD, Institute for Applied Microelectronics, University of Las Palmas de G. C., Spain
  • Investigatore principale: Francisco Rodríguez-Esparragón, BSc, PhD, Dr. Negrín University Hospital, Las Palmas, Spain
  • Investigatore principale: Bernardino Clavo, MD, PhD, Dr. Negrín University Hospital, Las Palmas, Spain

Pubblicazioni e link utili

La persona responsabile dell'inserimento delle informazioni sullo studio fornisce volontariamente queste pubblicazioni. Questi possono riguardare qualsiasi cosa relativa allo studio.

Pubblicazioni generali

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

30 novembre 2020

Completamento primario (Stimato)

30 settembre 2027

Completamento dello studio (Stimato)

31 dicembre 2027

Date di iscrizione allo studio

Primo inviato

5 marzo 2020

Primo inviato che soddisfa i criteri di controllo qualità

6 marzo 2020

Primo Inserito (Effettivo)

9 marzo 2020

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

25 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

22 settembre 2026

Ultimo verificato

1 settembre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • 2018-156-1
  • PI 19/00458 (Altro numero di sovvenzione/finanziamento: Instituto de Salud Carlos III)
  • 016/2019 (Altro numero di sovvenzione/finanziamento: Fundación DISA)
  • BF1-19-03 (Altro numero di sovvenzione/finanziamento: Fundación Española del Dolor (FED))
  • 2019 (Sovvenzione/contratto NIH degli Stati Uniti)
  • 2019-000821-37 (Numero EudraCT)

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .