Table 3.

Distribution of morphology and grade of ovarian tumors arising in BRCA1 and BRCA2 mutation carriers

FactorBRCA1, n (%)BRCA2, n (%)Total, n (%)
Morphology
 Serous534 (66)191 (70)725 (67)
 Mucinous11 (1)4 (1)15 (1)
 Endometrioid94 (12)33 (12)127 (12)
 Clear cell8 (1)8 (3)16 (1)
 Other166 (20)36 (13)202 (19)
 Total8132721,085
Grade
 117 (3)11 (6)28 (4)
 2104 (20)37 (21)141 (20)
 3407 (77)128 (73)535 (76)
 Total528176704

NOTE: Number of tumors (n) of each morphology type or grade, and as percentage (%) of all BRCA1- or BRCA2-related tumors where this information is available.