Postoperative circulating tumor DNA detection is associated with the risk of recurrence in patients resected for a stage II colorectal cancer.

Fiche publication

Date publication

novembre 2022

Journal

Frontiers in oncology

Auteurs

Membres identifiés du Cancéropôle Est :
Pr BOUCHE Olivier , Pr LEPAGE Côme , Pr MANFREDI Sylvain , Pr BIBEAU Frédéric

Tous les auteurs :
Grancher A, Beaussire L, Manfredi S, Le Malicot K, Dutherage M, Verdier V, Mulot C, Bouché O, Phelip JM, Levaché CB, Deguiral P, Coutant S, Sefrioui D, Emile JF, Laurent-Puig P, Bibeau F, Michel P, Sarafan-Vasseur N, Lepage C, Di Fiore F

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/36439476

Résumé

Circulating tumor DNA (ctDNA) is reported to be promising in localized colorectal cancer (CRC). The present study aimed to retrospectively evaluate the impact of ctDNA in patients with a resected stage II CRC from the PROGIGE 13 trial with available paired tumor and blood samples. A group of recurrent patients were matched one-to-one with nonrecurrent patients according to sex, tumor location, treatment sequence, and blood collection timing. CtDNA was analyzed by digital PCR according to NGS of tumors. Disease-free survival (DFS) and overall survival (OS) were analyzed based on ctDNA, and the risks of recurrence and death were determined. A total of 134 patients were included, with 67 patients in each group. At least one alteration was identified in 115/134 tumors. Postoperative ctDNA was detected in 10/111 (9.0%) informative samples and was detected more frequently in the recurrent group (16.7% versus 1.8%; p = 0.02). The median DFS of ctDNA+ versus ctDNA- patients was 16.8 versus 54 months (p = 0.002), respectively, and the median OS was 51.3 versus 69.5 months (p = 0.03), respectively. CtDNA was associated with recurrence (ORa = 11.13, p = 0.03) and death (HRa = 3.15, p = 0.01). In conclusion, the presence of postoperative ctDNA is associated with both recurrence and survival in stage II CRC.