DBRS onMarch 30 confirmed the ratings of Dallas-based Comerica Inc. and unit , and maintained thestable trend on all ratings.

The rating agencyconfirmed the company's issuer and senior debt rating at A, short-terminstruments rating at R-1 (low), and subordinated debt rating at A (low). Thebank's A (high) deposits and senior debt rating, R-1 (middle) short-terminstruments rating, and A subordinated debt rating were also confirmed.

The ratingsand stable trend, according to DBRS, reflect Comerica's "leading middlemarket commercial lending franchise that is geographically diverse andunderpinned by a stable, very low cost deposit base." DBRS continues tomonitor closely the company's pressured energy portfolio, but noted thatnon-energy related credit quality remains sound.