ClinicalTrials.gg
RecruitingNCT05404230OxaNeuroUpdated May 19, 2026

Prevention of Oxaliplatin-induced Nerve Damage in the Body's Extremities

An interventional study of Fish oil and Corn oil in Peripheral Neuropathy and Colorectal Cancer, sponsored by Vejle Hospital. Recruiting at 4 sites in Denmark. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-19.

Sponsored by Vejle Hospital · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Started Jul 2022; still recruiting 4 years 3 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to examine the effect of supplementary polyunsaturated fatty acids on nerve damage in the body's extremitites of patients treated with oxaliplatin containing chemotherapy after surgery for colorectal cancer.

Read the detailed description

The primary objective of the present study is to examine if a high dosage of n-3 PUFA reduces the incidence and severity of chemotherapy-induced peripheral neuropathy (CIPN) 8 months after adjuvant oxaliplatin following surgery for high-risk colorectal cancer.

An additional aim is to investigate whether n-3 PUFAs have an effect on nutritional status, cognition and mental status. Inflammatory mechanisms and biomarkers of CIPN in skin biopsies and in blood will be explored.

02

Conditions studied

  • Peripheral Neuropathy
  • Colorectal Cancer
03

In context

Peripheral Nervous System Diseases

476 studies on the registry are indexed under Peripheral Nervous System Diseases; 103 are open to participants now.

This study's planned enrollment of 120 is above the median of 57 across 359 interventional studies indexed under Peripheral Nervous System Diseases.

Browse Peripheral Nervous System Diseases studies →

Lead sponsor

Vejle Hospital is the lead sponsor of 95 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Histopathologically verified adenocarcinoma of the colon or rectum and planned standard treatment with capecitabine in combination with oxaliplatin.
  • performance status 0-2 (measurement of a patient's function in terms of self-care, daily activity and physical ability.
  • Written and orally informed

Exclusion criteria

Exclusion Criteria:

  • Inability to speak, read, and understand Danish.
  • Previous treatment with neurotoxic chemotherapy.
  • Neurological (including neuropathy) or psychiatric disorders, diabetes or other significant medical conditions.
  • Alcohol or drug abuse.
  • Sensory disturbances in the feet
  • Spinal stenosis.
  • Vascular disease (Fontaine grade II or more).
  • Known allergy to fish, fish oil or corn oil
  • Fertile patients not willing to use effective methods of during treatment or abstinence.
  • Daily intake of oil supplements and not willing to stop during the trial period.
  • Lack of consent to skin
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
120 participants (estimated)

Study arms

  • Active comparator
    Fish oil

    4 capsules containing n-3 poly unsaturated fatty acids (EPA and DHA) with a total concentration of 3 g per day. 4 capsules per day for 8 months

    Dietary Supplement: Fish oil

  • Placebo comparator
    Corn oil

    4 capsules containing n-6 poly unsaturated fatty acids in a total concentration of 2 g per day. 4 capsules per day for 8 months. Corn oil is regularly used in the kitchen and the daily dose in the study is the equivalent of adding an extra spoon of food oil when cooking. It has no known effect on the parameters we want to examine.

    Dietary Supplement: Corn oil

Interventions

  • Dietary supplementFish oil

    Fish oil containing poly unsaturated fatty acids.

  • Dietary supplementCorn oil

    Corn oil

06

What researchers measure

Primary outcomes

  1. Incidence of chemotherapy induced peripheral neuropathy (CIPN) 8 months after start of adjuvant chemotherapy

    Number of patients who meet the criteria for CIPN: relevant symptoms evaluated by a medical doctor, incl one of the following: abnormal vibration test or, abnormal nerve conduction test by DPN check device or, abnormal pinprick test or, abnormal skin biopsy.

    Time frame: 8 months after start of adjuvant chemotherapy

Secondary outcomes

  1. Intensity of CIPN-related neuropathic pain 8 months after adjuvant chemotherapy according to the Numeric Rating Scale (NRS)

    Average over the past 24 hours measured by NRS (scale from 0-10 with 0=no pain and 10=worst pain imaginable)

    Time frame: 8 months after start of adjuvant chemotherapy

  2. Change in severity of CIPN from baseline to 8 months after start of adjuvant chemotherapy according to the EORCT QLQ-CIPN 20 questionnaire

    EORCT QLQ-CIPN 20 = the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Chemotherapy Induced Peripheral Neuropathy

    Time frame: 8 months after start of adjuvant chemotherapy

07

Study locations

4 of 4 sites recruiting
  • Department of Oncology, AAUH
    Aalborg, Denmark
    Recruiting
    • Laurids Østergaard Poulsen · Contact
  • Department of Oncology, AUH
    Aarhus, Denmark
    Recruiting
    • Christian Hviid · Contact
  • Department of Oncology
    Sønderborg, Denmark
    Recruiting
    • Stinne Husum · Contact
  • Department of Oncology, Vejle Hospital
    Vejle, Denmark
    Recruiting
08

References and documents

Publications

  • Gehr NL, Karlsson P, Timm S, Christensen S, Hvid CA, Peric J, Hansen TF, Lauritzen L, Finnerup NB, Ventzel L. Study protocol: fish oil supplement in prevention of oxaliplatin-induced peripheral neuropathy in adjuvant colorectal cancer patients - a randomized controlled trial. (OxaNeuro). BMC Cancer. 2024 Feb 3;24(1):168. doi: 10.1186/s12885-024-11856-z. PubMed 38308227 ↗

Individual participant data

Plan to share: Yes — Due to restrictions related to Danish law protecting patient privacy, the data used in this study can be made available if it complies with GDPR and through an application to the Region of Southern Denmark

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report

Time frame: Due to restrictions related to Danish law protecting patient privacy, the data used in this study can be made available if it complies with GDPR and through an application to the Region of Southern Denmark

Access criteria: Due to restrictions related to Danish law protecting patient privacy, the data used in this study can be made available if it complies with GDPR and through an application to the Region of Southern Denmark

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2022 (actual). Primary completion is estimated for Dec 2027, 65 months after the start.

Of 122 non-industry interventional studies with no phase under Peripheral Nervous System Diseases, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 43. This study's planned 65 months is above that.

Counting every sponsor, half of 132 studies reached it within 25 months; a quarter within 12 and three quarters within 43.

How these figures are worked out, and which studies are left out of them.

Registered
May 30, 2022
First posted
Jun 3, 2022
StartActual
Jul 15, 2022
Primary completionEst.
Dec 2027
CompletionEst.
Dec 2028
Last update
May 19, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 19, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05404230
Lead sponsor
Vejle Hospital
Responsible party
Sponsor
First posted
Jun 3, 2022
Start date
Jul 15, 2022
Primary completion
Dec 2027 (estimated)
Completion
Dec 2028 (estimated)
Last update
May 19, 2026

Study contacts

Malene Nielsen, MD.
Contact
Malene.Nielsen6@rsyd.dk
+45 26823726
Karin Larsen
Contact
Karin.Larsen1@rsyd.dk
+ 45
Lise Ventzel, MD PHD
study director · medical doctor at Vejle Hospital, University Hospital of southern Denmark

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Fish Oils

Start the discussion