Table 1

 Observations of missense substitutions in BRCA1 in individuals who also carry a clearly deleterious BRCA1 mutation

Count*Polymorphism†UnclassifiedDeleterious†Total
*Each row is a co-occurrence count bin. Thus the first row gives the number of missense substitutions that were not observed to co-occur with a clearly deleterious mutation. The third row gives the number of missense substitutions that were observed to co-occur with exactly two clearly deleterious mutations, or (in parentheses) exactly two different deleterious mutations.
†Includes missense substitutions recently classified in either Goldgar et al7 or Phelan et al.26
01 (1)351 (351)28 (28)380 (380)
10 (0)39 (46)0 (0)39 (46)
21 (1)4 (3)0 (0)5 (4)
31 (2)6 (7)0 (0)7 (9)
4–52 (1)2 (0)0 (0)4 (1)
6–101 (1)2 (1)0 (0)3 (2)
11–1003 (4)4 (0)0 (0)7 (4)
>1007 (6)0 (0)0 (0)7 (6)
16 (16)408 (408)28 (28)452 (452)