OPRA: Difference between revisions

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==Bottom Line==
==Bottom Line==
Organ preservation was achieved in nearly half of patients with locally advanced rectal adenocarcinoma using TNT and a selective WW approach without compromising disease-free survival. Delivering chemoradiotherapy followed by consolidation chemotherapy (CRT-CNCT) led to higher organ preservation rates than induction chemotherapy followed by chemoradiotherapy (INCT-CRT).
Organ preservation was achieved in 46% of patients with locally advanced rectal adenocarcinoma using TNT and a selective WW approach without compromising disease-free survival compared to historic controls. Treatment initiation with chemoradiotherapy followed by consolidation chemotherapy (CRT-CNCT) demonstrated higher organ preservation rates than induction chemotherapy followed by chemoradiotherapy (INCT-CRT).


==Major Points==
==Major Points==
* need to make this more paragraph form - EA
* The OPRA trial evaluated the efficacy of organ preservation in rectal cancer using TNT and selective WW or total mesorectal excision (TME) based on tumor response.
* The OPRA trial evaluated the efficacy of organ preservation in rectal cancer using TNT and selective WW or total mesorectal excision (TME) based on tumor response.
* 324 patients with stage II-III rectal adenocarcinoma were randomized to INCT-CRT or CRT-CNCT and treated with TNT (systemic chemotherapy and chemoradiotherapy).
* 324 patients with stage II-III rectal adenocarcinoma were randomized to INCT-CRT or CRT-CNCT and treated with TNT (systemic chemotherapy and chemoradiotherapy).
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==Guidelines==
==Guidelines==
* TNT with selective WW is an option for patients achieving a complete clinical response (cCR).
* NCCN guidelines Version 4.2024: "In those patients who achieve a complete clinical response with no evidence of residual disease on digital rectal examination (DRE), rectal MRI, and direct endoscopic
* Organ preservation strategies require rigorous surveillance to monitor for regrowth or recurrence.
evaluation, a “watch and wait,” nonoperative (chemotherapy and/or RT) management approach may be considered in centers with experienced multidisciplinary teams.
The degree to which risk of local and/or distant failure may be increased relative to standard surgical resection has not yet been adequately characterized. Decisions for
nonoperative management (NOM) should involve a careful discussion with the patient of their risk tolerance"
* NCCN guidelines for watch and wait protocol:
** DRE and proctoscopy every 3-4 months for 2 years, then every 6 months/3 years
** MRI rectum every 6 months for at least 3 years
 
* 2023 ASCRS Clinical Practice Guidelines Managment of Rectal Cancer Supplement
**Following neoadjuvant therapy, patients should be assessed to determine response to treatment at 8-12 weeks
https://fascrs.org/ascrs/media/files/2023-Rectal-Cancer-Supplement.pdf


==Design==
==Design==
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