for people ages 22-80 (full criteria)
at Irvine, California and other locations
study started
estimated completion
Principal Investigator
by Kenneth J Chang, MD



This single-blind randomized control study will follow 142 subjects across 5 sites randomized on a 1:1 ratio to compare treatment efficacy and safety between TIF and LNF in GERD patients with hiatal hernia undergoing hernia repair.

Official Title

Multicenter Single-Blind RCT of CTIF Versus LNF For Treatment of GERD in Patients Requiring Hiatal Hernia Repair Combined With Transoral Incisionless Fundoplication Versus Laparoscopic Nissen Fundoplication for Treatment of Gastroesophageal Reflux Disease in Patients Requiring Hiatal Hernia Repair


GERD Hiatal Hernia Hernia Hernia, Hiatal LAPAROSCOPIC PARAESOPHAGEAL HIATAL HERNIA REPAIR COMBINED WITH TRANSORAL INCISIONLESS FUNDOPLICATION Laparoscopic Nissen Fundoplication (LNF) Combo Transoral Incisionless Fundoplication (CTIF)


You can join if…

Open to people ages 22-80

  1. 22-80 years of age
  2. Subjects have GERD with hiatal hernia < 5 cm (defined as maximum ,axial height from end of the esophagus to diaphragm by any study including upper endoscopy esophagram and or at time of surgery) and Hill grade III or IV
  3. Pathologic reflux while off PPI based on Lyon criteria by either of the following:

3.1. Conclusive evidence for pathologic reflux defined as acid exposure time (AET) > 6% (worst day) or LA grade C or D esophagitis.

3.2. Borderline evidence of pathologic reflux defined as presence of one of the following parameters: AET 4-6%, LA grade A or B.

  1. Commitment to long-term study
  2. Ability to give consent individually or by a legally authorized representative

You CAN'T join if...

  1. Hiatal hernia > 5 cm (defined as maximum axial height from end of the esophagus to diaphragm by any study including upper endoscopy esophagram and or at time of surgery)
  2. Evidence of clinically significant major esophageal motility disorder as determined by the site primary investigator
  3. Pregnancy (in females) at time of procedure
  4. Previous anti-reflux procedure
  5. Subjects requiring mesh treatment at time of procedure
  6. At the discretion of the site PI for subject safety
  7. BMI > 35 at time of surgery.
  8. Prior gastric surgery that may affect ability to perform either procedure or affect normal gastric function (e.g. gastrectomy, gastric bypass, sleeve gastrectomy, pyloroplasty.
  9. Severe gastroparesis


  • University of California Irvine not yet accepting patients
    Irvine California 92697 United States
  • University of Southern California not yet accepting patients
    Los Angeles California 90033 United States

Lead Scientist at UC Irvine

  • Kenneth J Chang, MD
    Clinical Professor, Medicine. Authored (or co-authored) 86 research publications.


accepting new patients
Start Date
Completion Date
Mayo Clinic
Mayo Clinic Clinical Trials
Study Type
Last Updated