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Outside the Cage (OTC) Robotic Esophagectomy

Outside the Cage (OTC) Robotic Esophagectomy , Single Center Phase I Trial

Status
Not yet recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06735638
Enrollment
31
Registered
2024-12-16
Start date
2027-01-01
Completion date
2028-01-01
Last updated
2026-03-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Esophageal Cancer

Keywords

Esophageal cancer, Minimally invasive esophagectomy (MIE), Robotic-assisted surgery, Phase I clinical trial, Outside the Cage (OTC) technique, Robotic-assisted thoracic surgery (RATS), Enhanced recovery after surgery (ERAS), Non-intercostal approach

Brief summary

The goal of this clinical trial is to evaluate the feasibility and safety of a novel non-intercostal robotic approach for minimally invasive esophagectomy (OTC MIE) in the treatment of esophageal cancer. This study aims to determine whether OTC MIE reduces the risk of acute and chronic chest pain compared to traditional minimally invasive esophagectomy (MIE) and improves postoperative outcomes for patients. Participants will undergo either the OTC MIE procedure or a traditional MIE approach as part of their treatment for esophageal cancer. Postoperative outcomes, including chest pain and recovery metrics, will be closely monitored. Follow-up assessments will be conducted to evaluate the long-term safety and effectiveness of the novel approach. The investigators aim to recruit 31 patients.

Detailed description

Esophageal cancer is the seventh most common cancer diagnosis worldwide, with approximately 604,000 new cases in 2022. Esophagectomy remains a cornerstone of esophageal cancer treatment, typically combined with perioperative chemoradiation for locally advanced disease. The procedure can be performed using various approaches, including open surgery and minimally invasive esophagectomy (MIE). MIE combines laparoscopy with thoracic techniques such as video-assisted thoracic surgery (VATS) or robotic-assisted surgery (RA), aiming to minimize trauma and improve both postoperative and long-term outcomes. While VATS and RA have demonstrated reduced cardiopulmonary morbidity and mortality compared to open esophagectomy, both methods still involve intercostal incisions. These incisions can cause trauma to intercostal nerves and bundles, potentially leading to acute and chronic postoperative chest pain. The evolution of minimally invasive techniques in thoracic and lung surgery has focused on reducing the size and number of incisions to minimize surgical trauma. However, even with these advancements, intercostal instrumentation remains a source of significant postoperative complications. Our group has developed a novel non-intercostal robotic approach for thoracic surgery called Outside the Cage (OTC) RATS. This technique was successfully implemented in over 60 lung resections, with the first published series showing promising outcomes, including feasibility, safety, and reduced postoperative pain. Additionally, results from a phase I clinical trial (NCT05832112) confirmed the safety and feasibility of this approach, with trends indicating faster recovery and less postoperative pain. Based on this experience, we recently performed the world's first OTC esophagectomy and have since refined the technique with successful outcomes, including no conversions to open surgery, transfusions, or major complications. This study is a prospective pilot phase I trial designed to assess the feasibility and safety of OTC MIE in patients treated for esophageal cancer. Patients eligible for participation will include those already scheduled for MIE based on clinical indications such as tumor size, location, and individual characteristics. By avoiding intercostal instrumentation, we hypothesize that the OTC MIE approach will positively impact postoperative outcomes, enhancing recovery and reducing complications. The primary objective of this study is to evaluate the feasibility of performing OTC MIE. The secondary objective is to systematically analyze the safety and postoperative recovery of patients undergoing this technique. This trial is timely given our institution's extensive experience with both traditional MIE and OTC RATS. The results of this study could have significant implications for clinical practice by demonstrating the benefits of a non-intercostal approach for esophageal cancer surgery, potentially improving patient recovery and reducing the burden on healthcare systems.

Interventions

PROCEDUREOTC MIE Esophagectomy

Consenting patients will undergo minimally invasive esophagectomy (MIE) using the Out of the Cage (OTC) robotic-assisted technique. The procedure will follow the exact standard steps of traditional VATS/RATS esophagectomy, except the thoracic ports will be placed in the subcostal plane. The number of ports (1-4) will be determined based on the patient and case characteristics. The Da Vinci Xi® surgical system will be used to perform the thoracic portion of the esophagectomy through subcostal ports using the standard technique. Once the procedure is completed, the robotic arms and ports will be removed from the chest, and figure-of-8 stitches with non-absorbable sutures will be placed to close the diaphragm at the port sites. A 24 Fr soft chest tube will be left in place, as per standard VATS/RATS esophagectomy protocols. Incisions will be closed in the standard manner.

Sponsors

Centre hospitalier de l'Université de Montréal (CHUM)
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

All patients with clinical stage I, II, or III esophageal cancer (cT1-3N0-2M0) scheduled to undergo minimally invasive esophagectomy (MIE) by VATS/RATS at the CHUM.

Exclusion criteria

* Age \< 18 years old * Inability to consent to the study * Pregnancy

Design outcomes

Primary

MeasureTime frameDescription
Conversion rateThrough study completion, an average of 1 yearFeasibility will be evaluated by completion of the procedure without conversion of the approach or technique. Any change in the treatment plan requiring the use of intercostal ports, conversion to conventional minimally invasive thoracic surgery through intercostal incisions, or conversion to open surgery
30-day mortality30 days after dischargeSafety will be evaluated by 30-day mortality. Any dead occurring during the hospital stay or within 30 days after discharge will be registered.

Secondary

MeasureTime frameDescription
Length of stayThrough study completion, an average of 1 yearLength of hospital stay
Operative timeIntraoperativeSurgical operative time including robot positioning
Estimated blood lossIntraoperativeRegistered by the OR nurse team
Postoperative painThrough study completion, an average of 1 yearPain scores on a visual analog scale: Pain Rating Scale between 0 and 10 (0: better outcome and 10:Worse outcome)
Quality of recoveryThrough study completion, an average of 1 yearAssessment of postoperative recovery using Quality Of Recovery (QOR-15) questionnaire between 0 and 10 (0: Better outcome and 10: Worst outcome)
Analgesic complementation requirementThrough study completion, an average of 1 yearNumber of participants who need of adding analgesia medication out of the analgesic pathway used in our center for conventional RATS/VATS
Serious adverse eventsThrough study completion, an average of 1 yearComplications derived from the operation that altered the pathway
Perioperative complicationsThrough study completion, an average of 1 yearComplications including intraoperative and postoperative occurring during the hospital stay or within 30 days after discharge will be graded according to the Clavien-Dindo classification
Evaluate Chronic PainThrough study completion, an average of 1 yearPain scores on a visual analog scale: Pain Rating Scale between 0 and 10 (0: better outcome and 10:Worse outcome). Chronic pain of OTC RATS lobectomy patients will be compared to that of VATS lobectomy patients, for which the data will also be collected and analysed retrospectively.

Countries

Canada

Contacts

CONTACTMoishe Liberman
moishe.liberman@umontreal.ca514-890-8000

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 19, 2026