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Too few women with breast cancer get genetic testing

(Reuters Health) – Some women with breast or ovarian cancer may profit from genetic testing to information their remedy and follow-up care, however lower than one in 5 of these women truly get examined, a current U.S. research suggests.

Of an estimated three.eight million women within the U.S. with a historical past of breast or ovarian malignancies, as much as 15 % may need inherited genetic mutations that would assist decide one of the best strategy to their care, researchers word within the Journal of Clinical Oncology.

For the research, researchers targeted on women who have been thought-about eligible for genetic testing by present tips. All women with ovarian cancer are eligible. With breast cancer, eligibility is determined by women’s age at analysis in addition to the age at analysis for any shut kin with breast tumors.

Among women recognized with breast cancer, about 36 % have been eligible for genetic testing however simply 15 % obtained examined, the research discovered. Only 11 % of women with ovarian cancer received examined.

“Over a million women with breast or ovarian cancer who should get getting genetic testing have not,” stated lead research writer Dr. Christopher Childers of the University of California, Los Angeles.

“Perhaps more shocking was that over 75 percent of these women have never even discussed the possibility of genetic testing with a healthcare provider,” Childers informed Reuters Health by e-mail.

Women with sure gene mutations might have particularly aggressive tumors that develop quickly and unfold shortly. Genetic exams can determine which women might profit from a more moderen era of focused cancer therapies that assault tumors brought on by particular gene mutations, most of that are inherited.

Results may assist a lady determine what sort of surgical procedure to have based mostly on her danger for recurrent cancer or new cancers, and also can information testing for daughters or different shut feminine relations.

For the research, researchers examined survey responses from a nationally consultant pattern of U.S. adults, together with 47,218 women with full info on whether or not they had mentioned genetic testing with their docs, have been informed to get exams and truly acquired exams.

Among these women, about 2.7 % had been recognized with breast cancer and zero.four % had been recognized with ovarian tumors.

About 29 % of the women with breast cancer who have been eligible for testing mentioned it with healthcare suppliers, and 20 % have been advised to get exams.

Women with breast cancer have been a bit of extra more likely to get wanted exams once they have been 45 or youthful on the time of their analysis than those that have been older.

Only about 15 % of women with ovarian cancer who have been eligible for genetic testing mentioned it with suppliers, and simply 13 % have been suggested to get exams.

One limitation of the research is that it relied on survey knowledge, requiring women to precisely recall and report on conversations about genetic testing which may have occurred a few years in the past, the authors observe.

But the outcomes nonetheless spotlight a have to get extra sufferers examined, stated Dr. Kevin Hughes of Massachusetts General Hospital and Harvard Medical School in Boston.

“If the woman or any member of her family had ovarian cancer, if there are more than 3 breast cancers in her family, if a male has had breast cancer, testing is always needed,” Hughes, writer of an accompanying editorial, stated by e mail.

“But even lesser family histories can prompt testing,” Hughes added. “We have entered an era where testing is inexpensive and its benefits are obvious, and therefore we have lowered the threshold as to who can be tested.”

SOURCE: bit.ly/2gLA1ea and bit.ly/2xeitSD Journal of Clinical Oncology, on-line August 18, 2017.

Our Standards:The Thomson Reuters Trust Principles.

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