Cancer risks for MLH1 and MSH2 mutation carriers.
Cancer risks for MLH1 and MSH2 mutation carriers.
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DOI:
10.1002/humu.22262
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发表时间:
2013-03
期刊:
影响因子:
3.9
通讯作者:
Jenkins, Mark A.
中科院分区:
文献类型:
--
作者:
Dowty, James G.;Win, Aung K.;Buchanan, Daniel D.;Lindor, Noralane M.;Macrae, Finlay A.;Clendenning, Mark;Antill, Yoland C.;Thibodeau, Stephen N.;Casey, Graham;Gallinger, Steve;Le Marchand, Loic;Newcomb, Polly A.;Haile, Robert W.;Young, Graeme P.;James, Paul A.;Giles, Graham G.;Gunawardena, Shanaka R.;Leggett, Barbara A.;Gattas, Michael;Boussioutas, Alex;Ahnen, Dennis J.;Baron, John A.;Parry, Susan;Goldblatt, Jack;Young, Joanne P.;Hopper, John L.;Jenkins, Mark A.
关键词:
We studied 17,576 members of 166 MLH1 and 224 MSH2 mutation-carrying families from the Colon Cancer Family Registry. Average cumulative risks of colorectal cancer (CRC), endometrial cancer (EC) and other cancers for carriers were estimated using modified segregation analysis conditioned on ascertainment criteria. Heterogeneity in risks was investigated using a polygenic risk modifier. Average CRC cumulative risks to age 70 years (95% confidence intervals) for MLH1 and MSH2 mutation carriers, respectively, were estimated to be 34% (25%-50%) and 47% (36%-60%) for male carriers and 36% (25%-51%) and 37% (27%-50%) for female carriers. Corresponding EC risks were 18% (9.1%-34%) and 30% (18%-45%). A high level of CRC risk heterogeneity was observed (p<0.001), with cumulative risks to age 70 years estimated to follow U-shaped distributions. For example 17% of male MSH2 mutation carriers have estimated lifetime risks of 0-10% while 18% have risks of 90-100%. Therefore, average risks are similar for the two genes but there is so much individual variation about the average that large proportions of carriers have either very low or very high lifetime cancer risks. Our estimates of CRC and EC cumulative risks for MLH1 and MSH2 mutation carriers are the most precise currently available.
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