Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-24 @ 11:03 PM
Ignite Modification Date:
2025-12-24 @ 11:03 PM
NCT ID:
NCT05250869
Brief Summary:
Acidification (i.e., addition of hydrochloric acid) of plasma samples from patients who have received Glucarpidase post high-dose MTX treatment is regarded as a necessary preanalytic step to avoid further in vitro enzymatic cleavage of MTX. However, it is unclear whether this acidification step is essential. A comparative study, which evaluates concentrations of MTX and its metabolites in paired (acidified versus non-acidified) plasma samples, has not yet been performed. Processing plasma samples without acidification would facilitate quantification of MTX, including plasma samples from patients treated at centers without adequate laboratory facilities.
Detailed Description:
Stored plasma samples (paired - acidified and non-acidified) from the specimens collection ('Tumorbiobank') of the Charité Comprehensive Cancer Center will be analysed by HPLC/MS.
A total of 136 samples from patients post Voraxaze across 3 levels of MTX concentrations:
30 without additive, 10 with 0.9% NaCl, 30 with HCl (stored at -80C) 9 without additive, 9 with HCl (stored at +4C and analysed after 3-5 days) 9 without additive, 9 with HCl (stored at -20C and analysed after 3-5 days) 30 with HCl (stored at +4C versus ambient temperature)
Study:
NCT05250869
Study Brief:
Protocol Section:
NCT05250869