Exact(1)
At the time the study was designed, irinotecan and oxaliplatin were not available even for experimental use in the adjuvant setting and it was thought that comparing the sequential MTX → FU combination to standard FU LV (maintaining levamisole in both arms) was reasonable and appealing for a large-scale pragmatic trial for three reasons.
Similar(59)
Clinical trials conducted throughout the 1990s tested various 5-FU based regimens against the standard 5-FU and levamisole combination.
In the other study, Vanhoefer et al (2000) compared the efficacy and tolerability of FP or etoposide, folinic acid, and 5-FU (ELF) with that of the standard 5-FU, ADR, and sequential high-dose methotrexate (FAMTX).
In concordance with the increased antitumoural efficacy and good tolerance, median survival time was nearly doubled in animals treated with our liposomal formulation, compared with standard 5-FU, thus demonstrating that chemoresistance to 5-FU could indeed be overcome.
These variants exhibit different sensitivities to 5-FU as demonstrated by the finding that a standard 5-FU treatment protocol cured all animals bearing the sensitive C26-10 tumour, while the relatively insensitive C26-B tumour showed only a two-fold increase in doubling time (van Laar et al, 1996a).
The UV-vis absorption spectra of 5-FU at different concentrations in PBS buffer solution and the standard 5-FU concentration curve are shown in Supplementary Figures S10 and S11, respectively.
Interestingly, the found 5-FU concentrations are far less from those that could be achieved by standard 5-FU chemotherapeutic schedules [ 41] which primarily target tumor cells.
In relapsed patients treated with both standard 5-FU and LV, oxaliplatin addition to the combination elicited a 9% greater response to treatment than 5-FU/LV infusion alone (0%) and oxaliplatin alone (1% greater response) with an estimated increase of 2 months in median-survival time [6].
However, survival is still disappointing and not improved over standard cisplatin/5-FU regimens.
IMF-8 showed comparable efficacy with respect to the standard 5-FU in this model with an additional anti-inflammatory activity and by enhancing endogenous antioxidant enzyme levels.
No study could show an improvement of prognosis in multimodal treatment of rectal cancer in comparison to standard 5-FU (de Gramont and Haller, 2008).
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