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Balance, gait negatively impacted after chemotherapy treatment

June 08, 2017

COLUMBUS - A single chemotherapy treatment can result in a significant negative impact on walking gait and balance, putting patients at an increasing risk for falls, according to a new study involving breast cancer patients conducted by researchers at The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James).

Up to 60 percent of patients experience chemotherapy-induced peripheral neuropathy (CIPN), nerve damage that impacts feeling in the hands or feet; however, when and to what extent this damage impacts functional abilities has been largely unknown.

This new study is the first to objectively measure the functional abilities of cancer patients during and after taxane-based chemotherapy. Researchers followed 33 patients with stage I-III breast cancer, assessing functional performance (standing balance and gait) and patient-reported outcomes at five timepoints spanning before treatment began up to three months post-treatment completion.

Researchers observed a 28 percent increase in side-to-side sway (medial-lateral) after just one chemotherapy treatment. That increased to 48 percent with cumulative chemotherapy exposure. Patients also demonstrated a 5 percent reduction in walking speed after three cycles of chemotherapy.

"This is not simply a quality of life concern -- CIPN can impact a patient's ability to receive treatment at all, limiting the potential for a cure. For patients who have great difficulty with neuropathy, we often have to modify their treatment regimen to make it tolerable -- sometimes the therapy has to be ceased entirely," says Maryam Lustberg, MD, MPH, senior author of the study and director of breast cancer survivorship services at the OSUCCC - James. "We need to make these treatments more tolerable to patients so they can get the full benefit of the treatments."

Lustberg and her colleagues report that taxane exposure is also associated with worsened sensory symptoms and poorer postural control. There was also an association between patients' balance and self-reported sensory symptoms.

The study was published online ahead of print in the medical journal Breast Cancer Research and Treatment April 3, 2017.

Significant Clinical Problem

CIPN leads to pain, falls and difficulty walking as well as performing activities of daily living. Although symptoms can improve with time, up to 30 percent of patients have persistent symptoms that last at least six months.

Researchers say the study provides initial support for the feasibility and potential utility of implementing objective measures of physical function into the oncology clinic.

"Cancer survivors are at a significant increased risk for falls, and the incidence rate of falling after chemotherapy is a serious concern for survivors' long-term quality of life," adds Lustberg. "Our study provides new insights on how taxane-based chemotherapy can impact fundamental aspects of patient function. These new insights can help us develop better strategies to help patients combat these challenges and, in some cases, choose a different therapy to treat the disease but with reduced side effects."

The OSUCCC - James is expanding this research to assess CIPN in colorectal cancer patients receiving taxane-based chemotherapy.

Integrating Gait, Balance Testing Into Clinical Practice

Study co-author Ajit Chaudhari, PhD, associate professor of physical therapy, orthopedics, mechanical engineering and biomedical engineering at The Ohio State University Wexner Medical Center says the study was an important first step in achieving better long-term outcomes after cancer and provides a new tool for integrating gait and balance screening into clinical care.

"We have created an easy-to-use clinical tool that has strong potential to quickly help clinicians identify patients -- very early on -- who are developing a chemotherapy reaction that impacts gait and balance," says Chaudhari. "It's no longer good enough for someone to just 'survive' cancer because many patients have decades of life ahead of them. It is critical to do everything we can to make the rest of their lives as productive and enjoyable as they want it to be."
-end-
This research was funded by grants from the National Cancer Institute and National Science Foundation Graduate Research Fellowship Program. Collaborators in the study include Ohio State researchers Scott Monfort, Xueliang Pan, PhD, Robyn Patrick, Bhuvaneswari Ramaswamy, MD, Robert Wesolowski, MD, Michelle Naughton, PhD, MPH; and Charles Loprinzi, MD, of Mayo Clinic.

About the OSUCCC - James

The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute strives to create a cancer-free world by integrating scientific research with excellence in education and patient-centered care, a strategy that leads to better methods of prevention, detection and treatment. Ohio State is one of 47 National Cancer Institute-designated Comprehensive Cancer Centers and one of only a few centers funded by the NCI to conduct both phase I and phase II clinical trials on novel anticancer drugs. As the cancer program's 308-bed adult patient-care component, The James is one of the top cancer hospitals in the nation as ranked by U.S. News & World Report and has achieved Magnet designation, the highest honor an organization can receive for quality patient care and professional nursing practice. With 21 floors and more than 1.1 million square feet, The James is a transformational facility that fosters collaboration and integration of cancer research and clinical cancer care. For more information, visit cancer.osu.edu.

Ohio State University Wexner Medical Center

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