Dr. Kerri Winters-Stone and Dr. Jacob Raber from Oregon Health and Science University, Portland, OR, describe a recent research paper they co-authored that was published by Oncotarget in Volume 13, entitled, “Association of fall rate and functional status by APOE genotype in cancer survivors after exercise intervention.”
DOI - https://doi.org/10.18632/oncotarget.28310
Correspondence to - Jacob Raber - raberj@ohsu.edu
Video - https://www.youtube.com/watch?v=XQK7MK7qfWY
Abstract
Purpose/Objectives: Cancer treatment survivors often report impaired functioning and increased falls. Not all survivors experience the same symptom burden, suggesting individual susceptibilities. APOE genotype is a potential genetic risk factor for cancer treatment related side effects. Lifestyle factors such as physical activity can mitigate the effect of APOE genotype on measures of clinical interest in individuals without a history of cancer. We tested the hypothesis that APOE genotype influences cancer treatment related side effects and symptoms as well as response to exercise intervention.
Materials and Methods: Data from a subsample of a study of fall prevention exercise in post-treatment female cancer survivors aged 50–75 years old (https://clinicaltrials.gov NCT01635413) were used to conduct a secondary data analysis. ApoE genotype was determined by serum sampling. Physical functioning, frequency of falls, and symptom burden were assessed using survey instruments.
Results: Data from 126 female cancer survivors a median of 49 months out from cancer diagnosis were analyzed. ApoE4 carriers trended toward a higher fall rate at baseline (p = 0.059), but after exercise intervention had a fall rate lower than E4 non-carriers both immediately after structured intervention (p = 0.013) and after 6 months of follow up (p = 0.002). E2 carriers did not show improved measures of depressive symptoms and self-report disability after exercise intervention. E3 homozygotes showed increased self report physical activity after the 6 month exercise intervention, but E4 and E2 carriers did not.
Conclusions: APOE genotype may modulate cancer treatment related side effects and symptoms and response to exercise intervention.
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Press release - https://www.oncotarget.com/news/pr/oncotarget-association-of-fall-rate-and-functional-status-by-apoe-genotype-in-cancer-survivors-after-exercise-intervention/
Keywords - apoE, breast cancer, exercise intervention, fall rate, functional status
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