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"Tratarse de" is an impersonal verb which is often translated as "to be about", and "en cuanto a" is a phrase which is often translated as "with regard to". Learn more about the difference between "tratarse de" and "en cuanto a" below.
tratarse de(
trah
-
tahr
-
seh
deh
)An impersonal verb is a verb with no apparent subject (e.g., Llueve en España.).
a. to be a question of
No se trata de saberlo todo sino de tener curiosidad.It isn't a question of knowing everything but of being curious.
en cuanto a(
ehn
kwahn
-
toh
ah
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. with regard to
En cuanto a la reunión, creo que es mejor que la pospongamos.With regard to the meeting, I think it is best that we postpone it.