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Three weeks of radiation therapy instead of five yields comparable results for patients with non-metastatic soft tissue sarcoma - Video

Published On 2022-11-07T09:00:05+05:30  |  Updated On 7 Nov 2022 9:00 AM IST
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Overview

A major side effect of pre-operative radiation therapy in patients with non-metastatic STS is an increased risk of wound-healing complications after surgery. Patients have a heightened risk of needing a second operation for wound repair, extensive wound management and readmission to the hospital.

Patients with non-metastatic soft tissue sarcoma (STS) who need pre-operative radiation therapy can safely receive hypofractionated treatment over three weeks instead of five, with comparable tumor control and no increased risk of major complications in wound healing, according to researchers at The University of Texas MD Anderson Cancer Center.

Results from the study, led by Ashleigh Guadagnolo, M.D., professor of Radiation Oncology, were published today in The Lancet Oncology. Guadagnolo also presented results at the 2022 American Society for Radiation Oncology (ASTRO) Annual Meeting.

On the single-arm, non-randomized trial, patients received hypofractionated radiation therapy, consisting of higher daily radiation therapy doses per treatment over fewer days relative to conventional therapy. Thirty-one percent of patients developed major wound complications within 120 days of surgery, while local tumor control was 93% at two-year follow-up - both comparable to historically reported rates with the longer treatment course.

"Our data indicate the three-week regimen offers patients a likely safe and effective alternative to the current standard of care with comparable outcomes in disease control and no increased risks of major wound complications," Guadagnolo said. "We are excited by the current results of this study, which demonstrate the value of a hypofractionated approach to radiation therapy, which is more convenient for patients."

On the current study, no patients experienced a serious adverse event or a grade 3 acute skin toxicity while on the study. The 31% rate of major wound complications is comparable to the historically observed 35% rate in patients treated with the standard five-week regimen.

"Research shows that patients receiving their treatment at cancer centers with sarcoma specialists have better survival and functional outcomes. Being able to shorten our patients' treatment time from five to three weeks may improve care accessibility because patients would be able to reduce their time away from home if they do not live near a sarcoma specialty center," Guadagnolo said.

The trial enrolled a total of 120 patients over the age of 18 with non-metastatic STS who had not previously undergone radiation therapy. All patients had STS in the extremity or superficial trunk; 65% of participants had lower extremity tumors; 17% had upper extremity tumors and 18% had tumors in the trunk.

All patients were treated with a three-week course of radiation consisting of 15 daily fractions of 2.85 Gray (Gy), totaling 42.75 Gy. The current standard dose is 50 Gy in 25 daily fractions, or a five-week course. Radiation therapy was followed by surgery four to eight weeks later. Researchers assessed major wound complications within 120 days of surgery among patients treated on the trial.

Long-term side effects, oncologic and functional outcomes using the hypofractionated regimen still are being assessed.

Reference:

Ashleigh Guadagnolo, et al,Hypofractionated, 3-week, preoperative radiotherapy for patients with soft tissue sarcomas (HYPORT-STS): a single-centre, open-label, single-arm, phase 2 trial,JOURNAL The Lancet Oncology

Speakers

Isra Zaman

B.Sc Life Sciences, M.Sc Biotechnology, B.Ed

Isra Zaman is a Life Science graduate from Daulat Ram College, Delhi University, and a postgraduate in Biotechnology from Amity University. She has a flair for writing, and her roles at Medicaldialogues include that of a Sr. content writer and a medical correspondent. Her news pieces cover recent discoveries and updates from the health and medicine sector. She can be reached at editorial@medicaldialogues.in.

Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751
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