Intriguingly, unique microbiota have been detected in the fluid of pancreatic cysts [72], with a predominance of the oral Fn and Granulicatella adiances in the fluid of pancreatic cysts of intraductal papillary mucinous neoplasms (IPMNs) in comparison to non-IPMN pancreatic cystic neoplasia. The gene discussed is FN1; the disease is pancreatic intraductal papillary-mucinous neoplasm.