に至っては
(Ni ita te wa)
when it comes to / as for (extreme case).
Connection rules
- +Noun + に至っては.
- +Extreme singling-out — X is the most notable / worst case.
- +Often follows a list of cases: 〜は、〜は、〜に至っては (a crescendo).
Examples
1.
彼の遅刻に至っては、もう許せない。

Kare no chikoku ni ita te wa, mou yuruse nai.
When it comes to his tardiness, I can no longer forgive it.
「when it comes to / as for (extreme case)」
2.
私に至っては、一度も行ったことがない。

Watashi ni ita te wa, ichi do mo okona ta koto ga nai.
As for me, I've never even been there.
「when it comes to / as for (extreme case)」
Practice
Everyone in the family was surprised, and as for my younger brother, he actually fainted.
家族全員が驚いたが、___気絶してしまった。
Romaji also accepted