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Phase 4 PERSEIDA study
Determination of the mutational status of RAS in liquid biopsies of
subjects with 1
st
line RAS WT metastatic colorectal cancer: An
observational, prospective, multicentre study in Spain
Before starting 1
st
-line
treatment
Plasma samples from
1
st
-line mCRC patients
with wild-type
RAS
(tumour tissue biopsy)
Liquid biopsies
20 ± 2 weeks
At disease
progression
Valladares et al. SEOM congress 2018; Abstract O-39 (and oral presentation)
García-Alfonso et al. ESMO congress 2018; Abstract 3887 (and poster discussion)