Topic in article written on this person (5)
I believe the answer is:
theme
'topic' is the definition.
(I know that topic can be written as theme)
'article written on this person' is the wordplay.
'article' becomes 'the' (the definite article).
'written on' is a charade indicator (letters next to each other).
'this person' becomes 'me' (the person writing).
'the'+'me'='THEME'
'in' acts as a link.
(Other definitions for theme that I've seen before include "thing under discussion" , "Main idea or topic" , "Subject of a talk or piece of writing" , "Subject set for discussion" , "Motif that's repeated" .)