as for

as for

On the topic of; regarding. As for my sleep, it's been a bit restless lately. Greg is coming tonight. As for Judy, I'm not sure—she never replied to my invitation.
Farlex Dictionary of Idioms.

as for someone or something

 and as to someone or something
regarding someone or something. As for the mayor, he can pay for his own dinner. As for this chair, there is nothing to do but throw it away.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

as for

Also, as to. With regard to, concerning. For example, As for dessert, I'd better skip it today and We are not sure as to how to pay the bill. A particularly well-known use of this idiom is in Patrick Henry's speech before the Virginia Convention in 1775: "As for me, give me liberty or give me death." Also see as to.
The American Heritage® Dictionary of Idioms by Christine Ammer.

as for somebody/something

turning to the subject of somebody/something: I like Sue very much, but as for her boyfriend — I wouldn’t care if I never saw him again!
See also: somebody, something
Farlex Partner Idioms Dictionary
See also:
  • as for somebody/something
  • regarding
  • I do believe
  • rammy
  • a mind like a sieve
  • (Do you) know what I mean?
  • spring fever
  • a dead cat on the line
  • everything is coming up roses
  • everything's coming up roses