Molecular profile of KRAS G12C-mutant colorectal and non-small-cell lung cancer

Autor: Luiz Henrique Araujo, Bianca Mendes Souza, Laura Rabelo Leite, Sabrina A. F. Parma, Natália P. Lopes, Frederico S. V. Malta, Maíra C. M. Freire
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: BMC Cancer, Vol 21, Iss 1, Pp 1-8 (2021)
Druh dokumentu: article
ISSN: 1471-2407
DOI: 10.1186/s12885-021-07884-8
Popis: Abstract Background KRAS is the most frequently mutated oncogene in cancer, however efforts to develop targeted therapies have been largely unsuccessful. Recently, two small-molecule inhibitors, AMG 510 and MRTX849, have shown promising activity in KRAS G12C-mutant solid tumors. The current study aims to assess the molecular profile of KRAS G12C in colorectal (CRC) and non-small-cell lung cancer (NSCLC) tested in a clinical certified laboratory. Methods CRC and NSCLC samples submitted for KRAS testing between 2017 and 2019 were reviewed. CRC samples were tested for KRAS and NRAS by pyrosequencing, while NSCLC samples were submitted to next generation sequencing of KRAS, NRAS, EGFR, and BRAF. Results The dataset comprised 4897 CRC and 4686 NSCLC samples. Among CRC samples, KRAS was mutated in 2354 (48.1%). Most frequent codon 12 mutations were G12D in 731 samples (14.9%) and G12V in 522 (10.7%), followed by G12C in 167 (3.4%). KRAS mutations were more frequent in females than males (p = 0.003), however this difference was exclusive of non-G12C mutants (p
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