Clinical features of familial adenomas polyps in Chinese and establishment of its immortal lymphocyte cell lines

Table 1 Phenotype of different kinds of FAP families mean ± SD

Kinds of FAP families	Number of families	Families withpositivefamily history	Mean number ofcolorectal neoplasmsb	Mean number ofcolorectal cancer	Mean of the earliest age atdiagnosis in one family
CFAP	21	16	3.14 ± 1.59	1.29 ± 1.10	32.9 ± 10.31
AFAP	3	3	2.00 ± 0.00	1.50 ± 0.71	42.0 ± 14.0
Suspected AFAP	3	3	2.67 ± 0.58	0.67 ± 0.58	25.0 ± 3.61

CFAP: Classical familial adenomatous polyposisp; AFAP: attenuated familial adenomatous polyposisp.

^bP < 0.01, comparison between CFAP and AFAP.