The phrase "and that topic" is correct and usable in written English.
It can be used to refer back to a previously mentioned subject or theme in a discussion or text.
Example: "We have covered several important issues, and that topic deserves further exploration."
Alternatives: "and that subject" or "and that matter".
I also rarely see any serious linguistic science, and that topic is interesting to me.
It was the first time the historied magazine had devoted an entire edition to one topic, and that topic just so happened to be our home.
One might even suspect that there is no line, and that topic neutrality is a matter of degree, truth-functional expressions being more topic-neutral than quantifiers, which are more topic-neutral than tense and modal operators, which are more topic-neutral than epistemic expressions, and so on (Lycan 1989).
This finding strengthens previous claims that "topic-relevant prior knowledge is a factor that can strongly affect writing quality and therefore must be included in a cognitive model" (Deane et al., 2008, p.19) and that topic knowledge is a major predictor of writing quality (DeGroff., 1987, Langer., 1985; McCuthen, 1986cited in Deane et al.,2008; Tedick, 1988; Liu, 2010).
Baseball is the only subject father and daughter can discuss together comfortably, and even that topic brings up painful resentment.
An Editorial Board of internationally diverse members suggests topics of special interest to their country/region and ensures that topics are current and include emerging research.
She said then that she had been involved in no wrongdoing and that the topic was of little concern to her constituents.
The students choose a topic, read about and discuss that topic, and then write a book together on that topic, editing each other's chapters.
Football makes the news, too, and on that topic the news has been unfailingly good.
And beyond that topic lay another that had nothing to do with the issues that Mr. Bush wanted to discuss.
We found numerous pieces about that, and only that, topic on the site.
