Short-Course Radiotherapy Followed by Consolidation Chemotherapy Is Safe and Effective in Locally Advanced Rectal...

Area of Science:

• Oncology
• Surgical Oncology
• Radiation Oncology

Background:

• Consolidation chemotherapy strategies have improved pathological complete response and tumor downstaging in rectal cancer patients.
• This study compares perioperative outcomes and pathological complete response (pCR) rates of different neoadjuvant treatment strategies for locally advanced rectal cancer (LARC) prior to total mesorectal excision (TME).

Discussion:

• The study utilized a propensity score-matched analysis of 345 patients from high-volume tertiary care centers.
• It compared long-course chemoradiation therapy (LCCRT) with and without consolidation chemotherapy (CC) against short-course radiotherapy (SCRT) followed by CC.
• While the time to surgery was longer with CC, pCR rates and short-term outcomes were comparable across the neoadjuvant strategies.

Key Insights:

• Pathological complete response rates were similar between LCCRT with CC (20.3%), SCRT with CC (20.8%), and LCCRT alone (14.6%) in the overall cohort.
• In the propensity score-matched analysis, pCR rates were comparable between LCCRT with CC (20.8%) and SCRT with CC (18.8%).
• Postoperative morbidity and anastomotic leak rates were similar across the compared treatment groups.

Outlook:

• Short-course radiotherapy followed by consolidation chemotherapy is a safe and effective neoadjuvant treatment option for locally advanced rectal cancer.
• This approach shows comparable short-term clinical outcomes to traditional long-course chemoradiation therapy.
• Further research may explore long-term oncological outcomes and quality of life associated with these different neoadjuvant strategies.