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Clinical Trial 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.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT06010277
Study type Interventional
Source Amphia Hospital
Contact Ramon Contrucci, MSc
Phone 0765954354
Email rcontrucci@amphia.nl
Status Recruiting
Phase Phase 4
Start date February 6, 2023
Completion date January 2024

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