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Feasibility and Safety of Hybrid Transvaginal Natural Orifice Transluminal Endoscopic Surgery for Colon Cancer

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT04048421
Recruitment Status : Recruiting
First Posted : August 7, 2019
Last Update Posted : August 3, 2023
Information provided by (Responsible Party):
Tao Fu, Renmin Hospital of Wuhan University

Brief Summary:
This study aims to evaluate the safety and efficacy of radical colectomy with hybrid transvaginal natural orifice transluminal endoscopic surgery (hvNOTES). This is a prospective, single-arm, multicenter, uncontrolled, open-label phase II study in 55 eligible subjects with resectable colon cancer. After informed consent, patients will be sent to have hvNOTES radical colectomy by surgeons with good experience in laparoscopic colorectal surgery. Patients' demographic, operative detail and postoperative outcomes including conversion to open surgery, operating time, blood loss, pain score, resumption of gastrointestinal function, postoperative complications, length of hospital stay, sexual function, quality of recovery, recurrence rate, recurrence patterns, relapse-free survival, and overall survival will be recorded prospectively. The results of the patients will be assessed to validate safety, functional outcomes or oncologic outcomes of hvNOTES colectomy.

Condition or disease Intervention/treatment Phase
Colon Cancer Natural Orifice Transluminal Endoscopic Surgery Procedure: hvNOTES radical colectomy Not Applicable

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 55 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase II Study to Evaluate the Feasibility and Safety of Hybrid Transvaginal Natural Orifice Transluminal Endoscopic Surgery for Treatment of Patients With Colon Cancer
Actual Study Start Date : December 20, 2019
Estimated Primary Completion Date : November 30, 2024
Estimated Study Completion Date : November 30, 2025

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: hvNOTES group
Participants will undergo hvNOTES radical colectomy.
Procedure: hvNOTES radical colectomy
With the patient under general anesthesia, pneumoperitoneum is achieved. Three trocars are inserted, one 12 mm or 5 mm in the umbilicus and two 5 mm in the right and/or left flanks. Mobilization of the splenic flexure or the hepatic flexure is performed with an initial traditional laparoscopic approach. A single-port is inserted into the abdominal cavity transvaginally through the colpotomy. Then most of the procedures are performed transvaginally with conventional rigid laparoscopic instruments. The corresponding arteries and veins are divided. The mesocolon is mobilized. The small intestine/colon/rectum are then divided with stapler. The specimen is removed transvaginally. Intracorporeal anastomosis is performed as per the surgeon's standard of care. For sigmoidectomy, the colon is then exteriorized and the anvil is fixed in the colon. An end-to-end anastomosis is performed using a circular stapler. Drainage tubes may be used.

Primary Outcome Measures :
  1. Postoperative complications [ Time Frame: up to 90 days after surgery ]
    The primary end point is major complication during surgery or within 90 days after surgery. A major intraoperative and postoperative complication is defined as a surgical or medical complication with a CTCAE grade of III or higher. The most severe complication in a patient was considered for the classification of the primary end point.

Secondary Outcome Measures :
  1. Conversion to laparoscopic or open surgery [ Time Frame: during the surgery ]
    One of the secondary outcome measures is the rate of conversion to laparoscopic or open surgery as an indicator of surgical technical difficulty. Conversion is defined as the use of a laparoscopic port for the anastomosis, or a laparotomy wound for any part of the mesocolon dissection or the anastomosis.

  2. Concentration of c-reactive protein (CRP) [ Time Frame: 1 and 3 postoperative days ]
    C-Reactive Protein (CRP) values on postoperative day 1and 3.

  3. Concentration of procalcitonine (PCT) [ Time Frame: 1 and 3 postoperative days ]
    Procalcitonine (PCT) values on postoperative day 1and 3.

  4. Complete pathological assessment of CME specimens [ Time Frame: up to 1 week after surgery ]
    Complete mesocolic excision (CME) is defined as complete resection of the mesocolon with its anatomical envelope. Rate of complete and near-CME achieved with hvNOTES, based on standard pathologic assessment of CME specimens.

  5. Postoperative pain assessed by the numeric rating scale (NRS) [ Time Frame: up to 1 week after surgery ]
    Pain score assessments: The investigator's staff will provide a rating scale to the patients to self-rate and record their pain at baseline (prior to surgery), at 24, 48, 72, 96, 120, 144, and 168 hours following the procedure end time (or discharge if earlier) postoperatively using the numeric rating scale (NRS) where 0 is for no pain and 10 is for the worst pain imaginable.

  6. Amount of narcotic pain medication administered [ Time Frame: up to 1 week after surgery ]
    The amount of narcotic pain medication administered through postoperative day 7 (or discharge if earlier) will be recorded (total dose of morphine equivalent during hospitalization and average dose per day).

  7. Time to first flatus after surgery [ Time Frame: up to 1 week after surgery ]
    Time to first flatus is defined as days from a colectomy procedure to first occurrence of flatus during subject's postoperative recovery.

  8. Number of harvested lymph nodes [ Time Frame: up to 1 week after surgery ]
    Number of harvested Lymph nodes according to the pathological report.

  9. R0 resection [ Time Frame: up to 1 week after surgery ]
    Rate of resection without any affected margins during the surgical procedure according to the pathological report.

  10. Length of hospital stay [ Time Frame: up to 4 weeks after surgery ]
    Days in the hospital after surgery.

  11. Sexual function assessment [ Time Frame: baseline, 6 months, and 12 months after surgery ]
    Patient self-reported sexual functions as assessed by the Female Sexual Function Index (FSFI). The FSFI is a 19-item questionnaire to rate sexual function between 2.0 and 36.0, where 2.0 is low sexual function and 36.0 is high sexual function.

  12. Quality of recovery: Quality of Recovery 40 questionnaire (QoR-40) [ Time Frame: 14 days after surgery ]
    Patient's quality of recovery is assessed by using the Quality of Recovery 40 questionnaire (QoR-40, score range: 40-200). Higher values represent better outcomes. The validate questionnaire measure quality of recovery by evaluating patients' comfort, emotions, physical independence, and support using the same scale.

  13. Satisfaction with surgical scars: Validated questionnaire Patient Scar Assessment Questionnaire (PSAQ) [ Time Frame: 3, 6, and 12 months after surgery ]
    Validated questionnaire Patient Scar Assessment Questionnaire (PSAQ, score range: 28-102) will be administered to assess the patient's perception of scarring. Lower values represent better outcomes. The PSAQ consists of 5 subscales: Appearance, symptoms, consciousness, satisfaction with appearance, and satisfaction with symptoms.

  14. Quality of Life Questionnaire (QLQ) of the European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30 [ Time Frame: baseline, 3 and 12 months after surgery ]
    Quality of Life Questionnaire (QLQ) of the European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30 Score 3 months and 1 year after the procedure. This scale has functional, global health, and symptoms subscales/items all scored from 0 to 100. Higher scores on these subscales indicate high level of functioning, high quality of life, and high level of symptomatology, respectively.

  15. Postoperative recurrence patterns [ Time Frame: 2 years after surgery ]
    The recurrence patterns are determined according to the primary recurrence site diagnosed radiologically (CT, US, MRI, or PET-CT), or with histologic proof (ascitic cytology, colonoscopic biopsy, or surgery).

  16. Relapse-free survival [ Time Frame: 2 years after surgery ]
    Relapse-free survival is defined as the time from random assignment until disease relapse or death from any cause.

  17. Overall survival [ Time Frame: 2 years after surgery ]
    Overall survival is defined as time from surgery to death.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Female.
  2. Age: over 18 and below 80 years old.
  3. BMI < 28 kg/m^2.
  4. American Society of Anesthesiologists score of class I to III.
  5. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
  6. Colonic adenocarcinoma by endoscopy with biopsy.
  7. Tumor size ≤ 5 cm.
  8. Involving a single colon segment:

    1. Right colon from the ileocecal valve up to and including the hepatic flexure.
    2. Left colon from the splenic flexure to the junction of the sigmoid and descending colon.
    3. Sigmoid colon between the descending colon and the rectum (at least 15 cm from the dentate).
  9. Clinical stage cT1, T2, or T3, cN0, N1, N2.
  10. No advanced local disease that renders laparoscopic resection impossible.
  11. No transverse colon cancer (between distal hepatic flexure and proximal splenic flexure).
  12. No distant metastasis in preoperative studies.
  13. Complete preoperative colonoscopy demonstrating no synchronous colon cancers.
  14. Require one of the following elective operations that may be safely performed by current techniques:

    1. Right hemicolectomy
    2. Left hemicolectomy
    3. Subtotal colectomy
    4. Sigmoid colectomy
  15. Patients who agree with participating in the clinical study with informed consents. And with willingness and ability to comply with the requirements of the study protocol including follow-up.

Exclusion Criteria:

  1. Patients who have never experienced complete sexual intercourse before the operation.
  2. Previous intestinal surgery with any cause.
  3. cT4 tumor.
  4. Complications of colon cancer (bleeding, obstruction, or perforation).
  5. Previous neoadjuvant chemotherapy or radiotherapy for colon cancer.
  6. Patients who are diagnosed with other malignancies within 5 years.
  7. Vulnerable patients.
  8. Vaginal stenosis.
  9. Prior reconstructive surgery of the vagina not including hysterectomy.
  10. Unstable angina or myocardial infarction within the past 6 months.
  11. Cerebrovascular accident within the past 6 months.
  12. Continuous systemic steroid therapy within 1 month before the surgery.
  13. Patients who participating or participated in other clinical trial within 6 months.
  14. Pregnancy or breastfeeding.
  15. Any history of pelvic radiation.
  16. Anticipated need for an ostomy at the time of operation.
  17. Patients requiring urgent or emergent surgery.
  18. Patients with prior or suspected diagnosis of inflammatory bowel disease such as Crohn's disease, ulcerative colitis, or familial polyposis.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04048421

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Contact: Tao Fu, MD 86-88041911 ext 81333
Contact: Jun Ren, MD 86-88041911 ext 81332

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China, Beijing
Beijing Friendship Hospital of Capital Medical University Recruiting
Beijing, Beijing, China, 100050
Contact: Hongwei Yao, MD   
Principal Investigator: Hongwei Yao, MD         
China, Chongqing
Daping Hospital of Army Medical University Recruiting
Chongqing, Chongqing, China, 400042
Contact: Weidong Tong, MD   
Principal Investigator: Weidong Tong, MD         
China, Hubei
Renmin Hospital of Wuhan University Recruiting
Wuhan, Hubei, China, 430060
Contact: Jun Ren, MD    8615902761670   
China, Hunan
The Third Xiangya Hospital of Central South University Not yet recruiting
Changsha, Hunan, China, 410013
Contact: Xiaorong Li, MD   
China, Shandong
Qingdao Municipal Hospital Recruiting
Qingdao, Shandong, China
Contact: Tao Fu, MD    8613720120190   
China, Zhejiang
The Second Affiliated Hospital of Zhejiang University Recruiting
Hangzhou, Zhejiang, China, 313000
Contact: Lifeng Sun, MD    8613958103041   
Principal Investigator: Lifeng Sun, MD         
Sponsors and Collaborators
Renmin Hospital of Wuhan University
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Principal Investigator: Tao Fu, MD Wuhan University Renmin Hospital
  Study Documents (Full-Text)

Documents provided by Tao Fu, Renmin Hospital of Wuhan University:
Informed Consent Form  [PDF] June 16, 2022


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Responsible Party: Tao Fu, Chief of Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University Identifier: NCT04048421    
Other Study ID Numbers: vNOTESCA
First Posted: August 7, 2019    Key Record Dates
Last Update Posted: August 3, 2023
Last Verified: August 2023
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Data obtained through this study may be provided to qualified researchers with academic interest in natural orifice transluminal endoscopic surgery. Data or samples shared will be coded, with no protected health information (PHI) included. Approval of the request and execution of all applicable agreements (i.e. a material transfer agreement) are prerequisites to the sharing of data with the requesting party.
Supporting Materials: Study Protocol
Statistical Analysis Plan (SAP)
Informed Consent Form (ICF)
Time Frame: Data requests can be submitted starting 9 months after article publication and the data will be made accessible for up to 24 months. Extensions will be considered on a case-by-case basis.
Access Criteria: Access to trial IPD can be requested by qualified researchers engaging in independent scientific research, and will be provided following review and approval of a research proposal and Statistical Analysis Plan (SAP) and execution of a Data Sharing Agreement (DSA). For more information or to submit a request, please contact

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Colonic Neoplasms
Colorectal Neoplasms
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Digestive System Diseases
Gastrointestinal Diseases
Colonic Diseases
Intestinal Diseases