ClinicalTrials.gg
Status unknownNCT04554758Updated Oct 8, 2020

Comparative Analysis Between Sleeve Gastrectomy and Roux-en Y Gastric Bypass in Bariatric Operation

An interventional study of Sleeve gastrectomy and Roux-en-Y gastric bypass in Obesity, Morbid, Overnutrition and Nutrition Disorders, sponsored by Inha University Hospital. Status unknown at 1 site in Korea, Republic of. Open to participants aged 20 Years to 65 Years. Per ClinicalTrials.gov, last updated 2020-10-08.

Sponsored by Inha University Hospital · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Oct 2020), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
400
Allocation
Non-randomized
Ages
20 Years to 65 Years
Sex
All
01

Study summary

Prospective, double-arm, multi-center cohort study on obese patients, for laparoscopic sleeve gastrectomy versus Roux-en Y gastric bypass

Read the detailed description

This is prospective cohort study. Total 400 obese patients will be enrolled(Sleeve gastrectomy 200 patients, Roux-en-Y gastric bypass 200)

The principal investigator or another clinical investigator in charge will individually inform the patients about the study, before operation at out patient clinic. At that time patient is selected to either sleeve gastrectomy group or Roux-en-Y gastric bypass group. All investigator report to clinical research center about patients BMI and operation method.

About 30-35 obesity patients will be enrolled according to their BMI status. Patients' BMI status is classified into several parts by 2.5 gap started from 27.5.

All patients will undergo periodically anthropometry, laboratory tests, bioelectrical impedance analysis, gastrofiberscopy, polysomnography and abdomen CT before and after surgery.

Patients with hypertension will undergo echocardiography. Patients with polycystic ovary syndrome will be checked hormonal study. Patients with type 2 diabetes mellitus will be performed 75g oral glucose tolerance test test.

Surgical complication include wound morbidities, gastrointestinal leakage or fistula, postoperative bleeding, intra-abdominal abscess, stricture , adhesive ileus, reflux esophagitis, marginal ulceration, dumping syndrome and internal hernia.

Systemic complication which is not associated with the operation field include ling morbidities, heart morbidities, urinary morbidities and others.

Hospital mortality is defined as postoperative death form any cause within 30 days after operation.

All patients will be followed up post operative 1 month, 3 month, 6 month, 12 month, 18 month, 24 month.

All patients' liver tissue, visceral fat and subcutaneous fat will be harvested during operation.

All patients' blood sample will be collected at out patient clinic visit. All patients' urine and face will be collected at out patient clinic visit and will be analyzed to evaluate microbial change throughout pre and post operation period.

02

Conditions studied

  • Obesity, Morbid
  • Overnutrition
  • Nutrition Disorders
  • Overweight and Obesity
  • Body Weight Changes

Keywords

  • primary bariatric surgery
  • morbid obesity
  • sleeve gastrectomy
  • Roux-en Y gastric bypass
  • South Korea
03

In context

Obesity, Morbid

941 studies on the registry are indexed under Obesity, Morbid; 163 are open to participants now.

This study's planned enrollment of 400 is above the median of 62 across 602 interventional studies indexed under Obesity, Morbid.

Browse Obesity, Morbid studies →

Lead sponsor

Inha University Hospital is the lead sponsor of 37 studies on the registry; 8 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • obesity patients( over 35)
  • morbid obesity patients(BMI over 30) with cardiovascular disease, hypertension, hyperlipidemia, type 2 diabetes mellitus, obstructive sleep apnea
  • type 2 diabetes mellitus obesity patients(BMI over 27.5) who were treated medical therapy or level over 7%

Exclusion criteria

Exclusion Criteria:

  • Patients who underwent previously bariatric operation
  • Patients who were diagnosed malignant disease patients within 5 years
  • Patients who were involved with other clinical trial within 3 months
  • Patients who are risky to conduct general anesthesia for operation
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

HbA1c

A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
400 participants (estimated)

Study arms

  • Experimental
    Sleeve gastrectomy

    200 obesity patients who undergo laparoscopic sleeve gastrectomy

    Procedure: Sleeve gastrectomy

  • Experimental
    Roux-en-Y gastric bypass

    200 obesity patients who undergo laparoscopic Roux-en-Y gastric bypass

    Procedure: Roux-en-Y gastric bypass

Interventions

  • ProcedureSleeve gastrectomy

    Bariatric operation will be done by laparoscopic sleeve gastrectomy procedure.

  • ProcedureRoux-en-Y gastric bypass

    Bariatric operation will be done by laparoscopic Roux-en-Y gastric bypass procedure.

06

What researchers measure

Primary outcomes

  1. Obesity Cure Success Rate

    Proportion of patients who reach BMI bellow 25

    Time frame: Postoperative 1 year

  2. Body weight change rate

    Decreased body weight proportion compare to preoperative body weight

    Time frame: Postoperative 1 year

  3. Waist circumference change rate

    Decreased waist circumference change proportion compare to preoperative waist circumference

    Time frame: Postoperative 1 year

Secondary outcomes

  1. Rate of morbid disease remission or partial remission

    Remission rate or partial remission rate of morbid disease related to obesity such as hypertension, type 2 diabetes mellitus, hyperlipidemia after surgery

    Time frame: Postoperative 1 year, 2 year

  2. Postoperative complication rate and mortality rate

    Number of participants surgical complications associate with the surgical technique or the operation field Number of participants mortality after operation associated with surgical complication or underlying disease

    Time frame: Within postoperative 30 days

  3. Micronutrient deficiency

    Incidence of micronutrient deficiency rate such as vitamine, calcium, iron

    Time frame: Postoperative 1 year, 2 year

  4. Quality of life improvement rate and degree-1

    Patients rate and quantitative analysis of the improved life quality using several survey EQ-5D-3L(EuroQol-5D) consists of 5 dimensions(mobility, self-care, usual activities, pain/discomfort and anxiety/depression). Each of which is scored as no/some/extreme problems. The dimension scores are converted into health utility scores ranging form 0(death) to 1(perfect health)

    Time frame: Postoperative 1 year, 2 year

  5. Quality of life improvement rate and degree-2

    EQ-VAS(EuroQol-Visual Analogue scale) is a question scale ranging form 0 to 100. 0 indicated the worst and 100 indicated the best condition. EQ-VAS provides important, complementary information on patient's view about their own health.

    Time frame: Postoperative 1 year, 2 year

  6. Quality of life improvement rate and degree-3

    Impact of Weight on QoL(IWQoL) has 5 dimensions and each dimension has several items. * physical function : 11 items * self-esteem : 7 items * sexual life : 4 items * public distress : 5 items * work : 4 items Score range from 0 to 100 and 100 represents the best quality of life.

    Time frame: Postoperative 1 year, 2 year

  7. Quality of life improvement rate and degree-4

    Moore-head-Ardelt QoL questionnaire II(MA-II) has 6 items(general self-esteem, physical activity, social contacts, satisfaction concerning work, pleasure related to sexuality and focus on eating behavior). All items are scored according to 10-level Likert scale(-0.5 to 0.5) and all have the same weight.

    Time frame: Postoperative 1 year, 2 year

  8. Quality of life improvement rate and degree-5

    Obesity-related Psychosocial Problem scale(OP scale) consists of 8 items that measure the bothersome impact of body weight on given situations. (private gatherings in their own home, private gatherings at their friend or relative's home and going to restaurant)

    Time frame: Postoperative 1 year, 2 year

07

Study locations

1 of 1 sites recruiting
  • Inha University Hospital
    Incheon, Korea, Republic of
    Recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Sep 2020 (actual). Primary completion is estimated for Aug 2022, 23 months after the start.

Of 274 non-industry interventional studies with no phase under Obesity, Morbid, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 48. This study's planned 23 months is close to that.

Counting every sponsor, half of 286 studies reached it within 25 months; a quarter within 11 and three quarters within 48.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 9, 2020
First posted
Sep 18, 2020
StartActual
Sep 1, 2020
Primary completionEst.
Aug 31, 2022
CompletionEst.
Aug 31, 2023
Last update
Oct 8, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 8, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04554758
Lead sponsor
Inha University Hospital
Collaborators
Korean Center for Disease Control and Prevention
Responsible party
Yoonseok Heo (Professor, Inha University Hospital) — Principal investigator
First posted
Sep 18, 2020
Start date
Sep 1, 2020
Primary completion
Aug 31, 2022 (estimated)
Completion
Aug 31, 2023 (estimated)
Last update
Oct 8, 2020

Study contacts

Yoon Seok Heo, Professor
Contact
gsheo@inha.ac.kr
+82-32-890-3437
Yun Suk Choi, Instructor
Contact
yunsukki@gmail.com
+82-32-890-3437
Yoon Seok Heo, Professor
principal investigator · Inha University Hospital
Do Joong Park, Professor
study director · Seoul National University Hospital
Yong Suk Park, Professor
study director · Seoul National University Bundang Hospital
Seung Wan Ryu, Professor
study director · Keimyung University Hospital
Moon Won Yoo, Professor
study director · Ulsan univertisy Seoul Asan Medical Center
Han Hong Lee, Professor
study director · The Catholic University of Korea
Ji Yeon Park, Professor
study director · Kyungpook National University Hospital
Sang Hyun Kim, Professor
study director · Soonchunhyang University Hospital
Jong Won Kim, Professor
study director · Chung-Ang University Hopspital
Jong Han Kim, Professor
study director · Korea University Medical Center(Guro Hospital)
In Seob Lee, Professor
study director · Ulsan univertisy Seoul Asan Medical Center
In Gyu Kwon, Professor
study director · Yonsei University Medical Center(Gangnam Hospital)
Tae Kyung Ha, Professor
study director · Hanyang University
Sung Il Choi, Professor
study director · Kyung Hee University Hospital at Gangdong
Kyung Won Seo, Professor
study director · Kosin University Gospel Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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