Can I cancel a loan from Prosper?

I understand that Prosper offers a platform for peer-to-peer lending, allowing individuals to borrow and lend money. However, I'm curious about the flexibility of their loan agreements. Can you clarify if it's possible for a borrower to cancel a loan from Prosper after it's been approved and funded? Are there any specific conditions or penalties associated with canceling a loan? Additionally, how does this process compare to traditional lending institutions where loans are often more rigidly structured?