Esophageal Cancer Clinical Trial
Study of Cryotherapy Treatment of Barrett’s Esophagus and Early Esophageal Cancer
Summary
The purpose of this study is to confirm the effectiveness and safety of a new medical device which sprays liquid nitrogen through an upper endoscope (cryotherapy) to treat Barrett's esophagus with high-grade dysplasia and early esophageal cancer. It is hypothesized that this treatment will remove the abnormal lining of the esophagus and allow the normal esophageal lining to return.
Full Description
Barrett's esophagus (BE) with high grade dysplasia (HGD) is a precursor of esophageal adenocarcinoma. Eliminating this condition may control the current rapid rise of adenocarcinoma. Ablative techniques are attempted to avoid the high morbidity and mortality of esophagectomy or for use in patients who cannot undergo surgery. Current ablative techniques have achieved mucosal ablation with variable success but are associated with high cost, patient discomfort and/or significant complications. A novel device which sprays liquid nitrogen through an upper endoscope (cryotherapy) has been shown to be a safe and effective procedure to ablate the esophageal mucosa in swine and dog models and in pilot studies in humans. Successful reversal of BE, LGD, HGD and superficial adenocarcinoma and squamous cell carcinoma have been demonstrated when cryotherapy with this device is followed by healing of the esophageal lining in a low acid environment.
This study is undertaken to demonstrate the efficacy and safety in the ablation of Barrett's esophagus with high-grade, neoplasia, and severe esophageal squamous dysplasia and to confirm preliminary results in humans.
Eligibility Criteria
Inclusion Criteria:
High Grade-IMCancer:
Diagnosis of Barrett's esophagus and high-grade dysplasia or intramucosal carcinoma
Deemed inoperable based on the following criteria: co-morbid conditions such as severe heart, lung, kidney or liver disease; or refusal of surgical intervention after a thorough discussion of the highly experimental nature of cryotherapy
CT scan of the chest and abdomen with oral and intravenous contrast (unless allergic), demonstrating no evidence of advanced esophageal cancer (extension into or through the wall or lymph node involvement)
Endoscopic ultrasound evaluation demonstrating no evidence of metastatic lymph node involvement or extension of carcinoma beyond the mucosa
Pathology review of esophageal biopsies by two independent reviewers, including at least one from the Department of Pathology at the University of Maryland, to confirm the diagnosis of Barrett's esophagus with HGD and/or IMCA
Presentation and discussion at Thoracic Tumor Board
Mucosal/submucosal cancer:
Diagnosis of esophageal carcinoma
Deemed inoperable based on the following criteria: co-morbid conditions such as severe heart, lung, kidney or liver disease; or refusal of surgical intervention after a thorough discussion of the highly experimental nature of cryotherapy
CT scan of the chest and abdomen with oral and intravenous contrast (unless allergic), demonstrating no evidence of advanced esophageal cancer (extension through the wall or lymph node involvement)
Endoscopic ultrasound evaluation demonstrating no evidence of metastatic lymph node involvement and primary lesion extending into submucosa or muscularis propria (T1smN0 or T2N0)
Presentation and discussion at Thoracic Tumor Board
Patients who have undergone previous ablation therapies are eligible for this study.
Severe squamous dysplasia:
Diagnosis of severe dysplasia within esophageal squamous mucosa
Deemed inoperable based on the following criteria: co-morbid conditions such as severe heart, lung, kidney or liver disease; or refusal of surgical intervention after a thorough discussion of the highly experimental nature of cryotherapy
CT scan of the chest and abdomen with oral and intravenous contrast (unless allergic), demonstrating no evidence of advanced esophageal cancer (extension into or through the wall or lymph node involvement)
Endoscopic ultrasound evaluation demonstrating no evidence of metastatic lymph node involvement or extension of carcinoma beyond the mucosa
Pathology review of esophageal biopsies by two independent reviewers, including at least one from the Department of Pathology at the University of Maryland, to confirm the diagnosis
Presentation and discussion at Thoracic Tumor Board
Exclusion Criteria:
Age less than 18 years
Co-morbid illness expected to cause death within 6 months
Pregnancy
Medically unfit or other contraindication to tolerate upper endoscopy
Inability to tolerate therapy with a proton pump inhibitor (PPI)
Refusal or inability to give consent
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There is 1 Location for this study
Baltimore Maryland, 21201, United States
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