Precancerous neoplastic cells can move through the pancreatic ductal system.
Nature
; 561(7722): 201-205, 2018 09.
Article
em En
| MEDLINE
| ID: mdl-30177826
Most adult carcinomas develop from noninvasive precursor lesions, a progression that is supported by genetic analysis. However, the evolutionary and genetic relationships among co-existing lesions are unclear. Here we analysed the somatic variants of pancreatic cancers and precursor lesions sampled from distinct regions of the same pancreas. After inferring evolutionary relationships, we found that the ancestral cell had initiated and clonally expanded to form one or more lesions, and that subsequent driver gene mutations eventually led to invasive pancreatic cancer. We estimate that this multi-step progression generally spans many years. These new data reframe the step-wise progression model of pancreatic cancer by illustrating that independent, high-grade pancreatic precursor lesions observed in a single pancreas often represent a single neoplasm that has colonized the ductal system, accumulating spatial and genetic divergence over time.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ductos Pancreáticos
/
Lesões Pré-Cancerosas
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Nature
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Estados Unidos