A U.S. woman is launching a class action lawsuit on some of the world’s biggest banks, including Barclays, Bank of America and UBS.

She claims their hand in the setting of LIBOR made mortgage repayments more expensive than they should’ve been between 2000 and 2009, reports FT.com.

Read: LIBOR losing benchmark status?

The subprime, adjustable-rate mortgages of Annie Bell Adams and her four co-lead plaintiffs were securitised into Libor-based collateralised debt obligations and sold by banks to investors.

Read: British banks step back from LIBOR

The plaintiffs could number 100,000, and have lost thousands of dollars each, their Alabama-based attorney, John Sharbrough, told FT.com.