The W Series has cancelled a planned round at Japan's Suzuka Circuit and replaced it with an event at Singapore's Marina Bay Street Circuit.
Instead of appearing on F1's undercard at Suzuka on 9 October, the all-female championship will now stage its seventh round of the 2022 season at Marina Bay on 2 October, in support of the Singapore Grand Prix.
A W Series statement read that Suzuka had been dropped from the schedule owing to "unforeseeable operational challenges".
W Series CEO Catherine Bond Muir said that changing global conditions in recent months had forced the cancellation of the Suzuka round.
"Since we announced our 2022 race calendar in January, the global landscape has changed considerably," said Bond Muir.
"It's with regret that we will not be racing in Japan this year, but the challenges involved in doing so have increased significantly in the past six months, meaning that for a young business like ours it is sadly no longer possible to hold a race there."
In addition to the new round in Singapore, other remaining races in the 2022 W Series will be in Hungary and the United States, before a double-header in Mexico concludes the season.
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