Extend journalist Frank's doting sign-off? (5)
I believe the answer is:
annex
'extend journalist' is the definition.
I can't tell whether this defines the answer.
'frank's doting sign-off?' is the wordplay.
'frank' becomes 'anne' (Anne Frank, Holocaust victim).
'doting sign off?' becomes 'x' (I can't explain this - if you can you should give a lot more credence to this answer).
'anne'+'x'='ANNEX'
Can you help me to learn more?
(Other definitions for annex that I've seen before include "Add to the end; take possession of" , "Add as an extra part" , "Tack on" , "Attach(ment)" , "Attach, invade" .)