The phrase "regardless of the topic" is correct and usable in written English.
It can be used to emphasize that something is true or valid regardless of the particular topic or issue being discussed. For example, "I'm always willing to have a thoughtful and respectful discussion, regardless of the topic."
And, regardless of the topic of a book or the race of its author, almost no one wanted to contend with experimental prose.
"Dressing up, talking, presenting themselves and ideas to adults, this is what they learn regardless of the topic," said Gigi Michaels, who served as a judge.
Regardless of the topic under consideration, I consider the Sunday mornings I spend with a cup of coffee and your correspondents to be some of the liveliest, most thought-provoking moments of the week.
The reason for such high scores regardless of the topic is not clear [18].
This finding is comparable to different previous guideline evaluation studies with the AGREE II instrument, regardless of the topic [18, 19, 20, 21].
Although less evident in our appraisal, this is comparable to previous papers that evaluated other guideline with the AGREE II tool, regardless of the topic [23, 24, 25, 26].
New films, a new kind of music, new literature, regardless of the topics, were irreverent toward political authority, and of religious and political tradition.
Classroom dynamics are inherent to the teaching approach used (e.g., teacher centered vs. learner centered) regardless of the topics studied during a given class period.
But what if I had not made a conscious decision to talk about sexism and violence against women and girls, in every single speech I gave--regardless of the topic?
Asked on Thursday whether Trump approves of the policy change from Sessions, White House Press Secretary Sarah Sanders didn't mince words: "The president believes in enforcing federal law… that is regardless of what the topic is, whether it's marijuana or it's immigration".
Regardless of the audience, topic, or industry, or whether the setting is a stand-up presentation, sit-down conversation, telephone discussion, or an online meeting, a leader uses language to influence someone's mind in order to achieve a certain result.
