Circulating tumour cell gene expression and chemosensitivity analyses: predictive accuracy for response to multidisciplinary treatment of patients with unresectable refractory recurrent rectal cancer or unresectable refractory colorectal cancer liver metastases

Simple item page
dc.contributor.authorGuadagni, Stefano
dc.contributor.authorMasedu, Francesco
dc.contributor.authorFiorentini, Giammaria
dc.contributor.authorSarti, Donatella
dc.contributor.authorFiorentini, Caterina
dc.contributor.authorGuadagni, Veronica
dc.contributor.authorApostolou, Panagiotis
dc.contributor.authorPapasotiriou, Ioannis
dc.contributor.authorParsonidis, Panagiotis
dc.contributor.authorValenti, Marco
dc.contributor.authorRicevuto, Enrico
dc.contributor.authorBruera, Gemma
dc.contributor.authorFarina, Antonietta R.
dc.contributor.authorMackay, Andrew R.
dc.contributor.authorClementi, Marco
dc.date.accessioned2022-06-19T00:03:23Z
dc.date.available2022-06-19T00:03:23Z
dc.date.issued2022-06-16
dc.date.updated2022-06-19T00:03:23Z
dc.description.abstractAbstract Background Patients with unresectable recurrent rectal cancer (RRC) or colorectal cancer (CRC) with liver metastases, refractory to at least two lines of traditional systemic therapy, may receive third line intraarterial chemotherapy (IC) and targeted therapy (TT) using drugs selected by chemosensitivity and tumor gene expression analyses of liquid biopsy-derived circulating tumor cells (CTCs). Methods In this retrospective study, 36 patients with refractory unresectable RRC or refractory unresectable CRC liver metastases were submitted for IC and TT with agents selected by precision oncotherapy chemosensitivity assays performed on liquid biopsy-derived CTCs, transiently cultured in vitro, and by tumor gene expression in the same CTC population, as a ratio to tumor gene expression in peripheral mononuclear blood cells (PMBCs) from the same individual. The endpoint was to evaluate the predictive accuracy of a specific liquid biopsy precision oncotherapy CTC purification and in vitro culture methodology for a positive RECIST 1.1 response to the therapy selected. Results Our analyses resulted in evaluations of 94.12% (95% CI 0.71–0.99) for sensitivity, 5.26% (95% CI 0.01–0.26) for specificity, a predictive value of 47.06% (95% CI 0.29–0.65) for a positive response, a predictive value of 50% (95% CI 0.01–0.98) for a negative response, with an overall calculated predictive accuracy of 47.22% (95% CI 0.30–0.64). Conclusions This is the first reported estimation of predictive accuracy derived from combining chemosensitivity and tumor gene expression analyses on liquid biopsy-derived CTCs, transiently cultured in vitro which, despite limitations, represents a baseline and benchmark which we envisage will be improve upon by methodological and technological advances and future clinical trials.
dc.identifier.citationBMC Cancer. 2022 Jun 16;22(1):660
dc.identifier.doihttps://doi.org/10.1186/s12885-022-09770-3
dc.identifier.urihttp://hdl.handle.net/1880/114754
dc.identifier.urihttps://doi.org/10.11575/PRISM/45023
dc.language.rfc3066en
dc.rights.holderThe Author(s)
dc.titleCirculating tumour cell gene expression and chemosensitivity analyses: predictive accuracy for response to multidisciplinary treatment of patients with unresectable refractory recurrent rectal cancer or unresectable refractory colorectal cancer liver metastases
dc.typeJournal Article
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
12885_2022_Article_9770.pdf
Size:
3.72 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
0 B
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Open Access Publications