Question

As for Mattie's third wish, Oprah Winfrey asked Mattie to appear on her show.
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What can we use instead of 'As for'?
Mesh
With respect to, can be used instead of as for. So it will be With respect to Mattie's third wish, Oprah Winfred asked Mattie to appear on her show
Writeacher
Or ... you can just start the sentence with "For..." and omit "As."