ClinicalTrials.gg
RecruitingNCT06010277FLEXUpdated Aug 24, 2023

Folinic Acid for Prevention of Pemetrexed-induced Toxicity

A Phase 4 interventional study of Folinic acid in NSCLC, Mesothelioma and Thymoma, sponsored by Amphia Hospital. Recruiting at 2 sites in Netherlands. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-08-24.

Sponsored by Amphia Hospital · Phase 4, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Jan 2024, 2 years 10 months ago, but the record still lists the study as recruiting.
  • Started Feb 2023; still recruiting 3 years 9 months later.
Phase
Phase 4
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Objective The main objective is to evaluate the haematological toxicity in patients who use pemetrexed with and without rescue therapy with folinic acid.

Primary endpoint Difference between treatment groups in neutrophil count (*109/L) at day 8-10 after administration of pemetrexed (nadir).

Secondary endpoints The grade neutropenia (according to the CTCAE version 5, 2017) at day 8-10, the homocysteine plasma levels at baseline (predictor for developing toxicity), the efficacy of chemotherapy treatment based on response CT after cycle 2 and 4 and the incidence of discontinuation, dose delays and dose reductions of pemetrexed.

Trial design The FLEX-trial is a multi-centre, open label, double arm, randomized trial to compare neutropenia in patients with and without folinic acid rescue therapy where subjects are participating for 4 treatment cycles.

Population In total 50 patients (25 in each arm), >18 years with stage IV non-small cell lung cancer (NSCLC) or mesothelioma treated with pemetrexed (in combination with other chemo- or immunotherapy) are eligible for inclusion.

Interventions Follow-up will take place during the first 4 cycles of chemotherapy with pemetrexed. Patients in the intervention-arm will receive oral folinic acid orally 4 times 45mg / day for 3 days, starting 24 hours after the administration of pemetrexed.

02

Conditions studied

  • NSCLC
  • Mesothelioma
  • Thymoma
03

In context

Mesothelioma

305 studies on the registry are indexed under Mesothelioma; 61 are open to participants now.

This study's planned enrollment of 50 is close to the median of 48 across 250 interventional studies indexed under Mesothelioma.

Browse Mesothelioma studies →

Lead sponsor

Amphia Hospital is the lead sponsor of 13 studies on the registry; 3 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

Eligibility criteria

In order to be eligible to participate in this study, a subject must meet all of the following criteria:

  1. ≥18 years old
  2. Eligible for treatment with pemetrexed-based chemotherapy based on indication.
  3. performance score of 0-2.
  4. Subject is able and willing to sign the Form

A potential subject who meets any of the following criteria will be excluded from participation in this study:

  1. for treatment with folinic acid in line with the SmPC.

    1. to the active substance or to any of the .
    2. Anaemia caused by vitamin B12 deficiency.
  2. The presence of drug-drug interactions, according to the current SmPC of folinic acid.
Terms in these criteria, in plain language(6)

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.

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.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
50 participants (estimated)

Study arms

  • Experimental
    Folinic acid arm

    Patients in the intervention-arm will receive oral folinic acid orally 4 times 45mg / day for 3 days, starting 24 hours after the administration of pemetrexed.

    Drug: Folinic acid

  • No intervention
    No folinic acid arm

    Patients will be treated according to regular care.

Interventions

  • Follow-up will take place during the first 4 cycles of chemotherapy with pemetrexed. Patients in the intervention-arm will receive oral folinic acid orally 4 times 45mg / day for 3 days, starting 24 hours after the administration of pemetrexed.

06

What researchers measure

Primary outcomes

  1. Difference in neutrophil count (*109/L) at day 8-10 after pemetrexed administration during 2 cycles of chemotherapy

    To evaluate the haematological toxicity (continuous measure) in patients who use pemetrexed with and without rescue therapy with folinic acid.

    Time frame: Between day 8-10 in the first 2 cycles (each cycle is 21 days)

Secondary outcomes

  1. Grade neutropenia (according to the CTCAE version 5, 2017) at day 8-10 after pemetrexed administration during 2 cycles of chemotherapy

    To evaluate the difference in haematological toxicity based on the CTCAE criteria for neutrophil count

    Time frame: Between day 8-10 in the first 2 cycles (each cycle is 21 days)

  2. Homocysteine plasma levels at baseline (μmol/L)

    To evaluate the influence of baseline homocysteine plasma levels on occurrence of haematological toxicity.

    Time frame: Once, before the start of the first cycle (each cycle is 21 days)

  3. Efficacy based on response CT after cycle 2 and 4 (categorical: response, partial response, progression)

    To evaluate the efficacy of the treatment with pemetrexed (based on CT-scan).

    Time frame: After the second and fourth cycle (each cycle is 21 days)

  4. Incidence of discontinuation, dose delays and dose reductions of pemetrexed

    To evaluate the incidence of treatment delay or dose reduction of pemetrexed.

    Time frame: 3 months

07

Study locations

1 of 2 sites recruiting
08

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 24, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06010277
Lead sponsor
Amphia Hospital
Collaborators
Albert Schweitzer Hospital
Responsible party
Dr. N. (Nikki) de Rouw (Dr. Nikki de Rouw, principal investigator, Amphia Hospital) — Principal investigator
First posted
Aug 24, 2023
Start date
Feb 6, 2023
Primary completion
Jan 2024 (estimated)
Completion
Jan 2024 (estimated)
Last update
Aug 24, 2023

Study contacts

Ramon Contrucci, MSc
Contact
rcontrucci@amphia.nl
0765954354
Nikki de Rouw, Phd
Contact
nderouw@amphia.nl
0765957757

Oversight

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

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Studies of the drug tested here: Leucovorin

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