Ethics of Using Victim's Name in Research?
Journalists I have spoken to have emphasized the importance of communicating in private, with ample lead time prior to publication, with multiple people with relevant personal and professional experience. For instance, if it was a suicide, you might want to run a question like this by both professionals in areas related to suicide, and families of people who have committed suicide.

Maybe this is an approach your IRB is already taking, but I see no harm in doing some investigation of your own. If nothing else, it might inform your communication with your IRB.

No "rule of thumb" will cover all situations, and the number of overlapping considerations can make it pretty complex. Communicate with people who have experience and expertise that will make them likely to think of things you might miss.