Your Query returns 11 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Rasa1NM_14545210090Gap    Rasa    RasGAP    MGC7759    139150
Rasa1NW_04761610116
RASA1BC0330159606GAP    RASA    p120GAP    RASGAP    139150
RASA1BC0548919606GAP    RASA    p120GAP    RASGAP    139150
RASA1NM_1744499913
Rasa1NT_03958910090139150
Rasa1BC01363710090MGC7759    RasGAP    Rasa    139150
RASA1NM_0226509606GAP    PKWS    RASA    CMAVM    RASGAP    p120GAP    139150
RASA1NM_0028909606GAP    PKWS    RASA    CMAVM    RASGAP    p120GAP    139150
RASA1NT_0067139606139150
Rasa1NM_01313510116GAPX    Rasa   

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002