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Moffitt researchers find cancer therapies affect cognitive functioning among breast cancer survivors
Date:4/20/2012

Researchers at Moffitt Cancer Center and colleagues at the University of South Florida and University of Kentucky have found that breast cancer survivors who have had chemotherapy, radiation or both do not perform as well on some cognitive tests as women who have not had cancer.

They published their study in the April 1 issue of Cancer.

"Survivors of breast cancer are living longer, so there is a need to better understand the long-term effects of cancer therapies, such as chemotherapy and radiation," said study lead author Paul B. Jacobsen, Ph.D., associate center director for Population Sciences.

To carry out their study, the researchers recruited 313 women being treated by either chemotherapy or radiotherapy for early stage breast cancer at Moffitt Cancer Center and the University of Kentucky Chandler Medical Center. Those who had undergone treatment for cancer were tested six months after treatment and then tested again 36 months after having completed treatment.

They also recruited a control group of women who did not have cancer. These participants were also tested at six months and 36 months.

Participants in all groups were within five years of age, and breast cancer patients were matched with noncancer patients who lived in their same ZIP codes. Participants were tested cognitively with respect to processing speed (quick task completion under pressure), executive functioning (ability to shift cognitive sets and solve novel problems), the two domains expected to be most affected by chemotherapy. They were also tested with regard to verbal abilities.

"Our findings were partially consistent with prior research," explained Jacobsen. "We found that chemotherapy-treated patients performed worse than noncancer controls in processing speed, executive functioning and verbal ability. These domains may be the domains most affected by chemotherapy."

The also found test results for the radiotherapy
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Contact: Patty Kim
patty.kim@moffitt.org
813-745-7322
H. Lee Moffitt Cancer Center & Research Institute
Source:Eurekalert

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