MASTR ABS Classes Downgraded

Two classes of mortgage pass-through certificates in Mortgage Asset Securitization Transactions Asset Back Securities Trust deals have been downgraded by Fitch Ratings.Class M-6 of series 2002-OPT1 was downgraded from BBB-minus to BB-minus, and class M-6 of series 2003-WMC2 was downgraded from BBB-minus to BB-plus. Fitch also placed classes M-10 and M-11 of series 2005-NC2 on Rating Watch Negative and affirmed the ratings on 22 classes in three MASTR ABS securitizations. The rating agency attributed the downgrades to deterioration in the relationship between credit enhancement and loss expectations. Fitch said the collateral backing the transactions consists primarily of first- and second-lien fixed- and adjustable-rate subprime mortgage loans.

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