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Novel Strategy for Early Detection of Esophageal Squamous Cell Carcinoma

Primary Purpose

Esophageal Squamous Cell Carcinoma, Esophageal Squamous Dysplasia

Status
Recruiting
Phase
Not Applicable
Locations
Tanzania
Study Type
Interventional
Intervention
EsophaCap Sponge
Chromoendoscopy
EsoCAN assay
Sponsored by
University of California, San Francisco
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional diagnostic trial for Esophageal Squamous Cell Carcinoma focused on measuring EsophaCap, Biomarker Detection, Cancer Detection, Chromoendoscopic screening

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

ESCC Cases (Group 1):

  • Male or female >= 18 years of age at screening visit.
  • Patients are currently seen for clinical care at Muhimbili National Hospital (MNH)-Upanga or at MNH-Mloganzila.
  • Patient meets one of the following two criteria-
  • Patients with a confirmed diagnosis of ESCC as evidenced by histological confirmation OR
  • Patient planned to undergo EGD with biopsy for suspected ESCC based upon any one of the following clinical criteria: (1) findings on computed tomography (CT) scan; (2) findings on barium swallow; (3) findings on endoscopy without biopsy confirmation, (4) symptoms of dysphagia and/or odynophagia without an alternative explanation for these symptoms.
  • Patient must be able to swallow liquid (Ogilvie's score < 3).
  • Patients must be well enough to participate in a 20-minute interview or have a close relative who is able to do so on their behalf.
  • Patients must be willing to be contacted either in person or via phone 7-10 days following administration of the 'EsophaCap' sponge device.
  • Native of Tanzania.
  • Written informed consent (and assent when applicable) obtained from subject or subject's legal representative and ability for subject to comply with the requirements of the study.

Non-ESCC study participants (Group 2):

  • Male or female ≥ 18 years of age at screening visit.
  • Patients are currently seen for clinical care at MNH-Upanga or at MNH-Mloganzila.
  • Patient is scheduled to undergo EGD for a suspected non-malignant condition with no symptoms concerning for esophageal cancer (i.e. dysphagia or odynophagia).
  • Patient must be able to swallow liquid (Ogilvie's score < 3).
  • Patients must be well enough to participate in a 20-minute interview or have a close relative who is able to do so on their behalf.
  • Patients must be willing to be contacted either in person or via phone 7-10 days following administration of the 'EsophaCap' sponge device.
  • Native of Tanzania.
  • Written informed consent (and assent when applicable) obtained from participant or participant's legal representative and ability for subject to comply with the requirements of the study.

Exclusion Criteria:

ESCC Cases (Group 1):

  • Known pregnancy during participation in the study.
  • Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data.
  • Clinical instability (i.e. hypotension or a recent cardiovascular event).
  • Any history of upper gastrointestinal bleeding within the past 3 months (including reported history of hematemesis and/or melena).
  • Diagnosis of peptic ulcer disease within the last 3 months.
  • Known history of esophageal varices.
  • Patients taking anticoagulation or antiplatelet therapy/medication (warfarin, clopidogrel, aspirin, heparin or enoxaparin) for high-risk conditions.
  • Patients with an active extra-esophageal malignancy (not currently in remission).
  • Patient with a known history of a non-malignant esophageal stricture.
  • Patients with esophageal stents currently in place.
  • Patients with a history of radiation therapy to the head, neck, any part of the gastrointestinal tract (including esophagus) or thorax.
  • Patients who have previously received chemotherapy in the last 12 months
  • Patients with any history of major surgery for esophageal cancer (e.g. esophageal bypass, esophagectomy, etc.).
  • Patients who have a known history of or clinical symptoms concerning for tracheoesophageal fistula (aspiration history, severe cough)
  • Patients with a known history of small bowel obstruction
  • Patients with a history of bleeding complications during esophageal biopsy.
  • Patients with any history of a head and neck malignancy.
  • Patients with a known bleeding disorder
  • Patients with known thrombocytopenia (less than 50,000 platelets per microliter)
  • Individuals who are not permanent residents or natives of Tanzania.
  • Inability to follow instructions.
  • Unable to provide informed consent.

Non-ESCC study participants (Group 2):

  • Known pregnancy during participation in the study.
  • Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data.
  • Clinical instability (i.e. hypotension or a recent cardiovascular event).
  • Any history of upper gastrointestinal bleeding within the past 3 months (including reported history of hematemesis and/or melena).
  • Diagnosis of peptic ulcer disease within the last 3 months.
  • Known history of esophageal varices.
  • Patients taking anticoagulation or antiplatelet therapy/medication (warfarin, clopidogrel, aspirin, heparin or enoxaparin) for high-risk conditions.
  • Patients with an active extra-esophageal malignancy (not currently in remission) or any history of a non-cutaneous malignancy diagnosed within the previous five years.
  • Patient with a known history of esophageal strictures disabling passage of the capsule.
  • Patient with esophageal stents currently in place.
  • Patients with a history of radiation therapy to the head, neck, any part of the gastrointestinal tract (including esophagus) or thorax.
  • Patients with a known history of small bowel obstruction
  • Patients with a known bleeding disorder
  • Patients with known thrombocytopenia (less than 50,000 platelets per microliter)
  • Individuals who are not permanent residents or natives of Tanzania.
  • Allergy to iodine
  • Presence of goiter.
  • Inability to follow instructions.
  • Unable to provide informed consent

Sites / Locations

  • Muhimbili National Hospital (MNH)Recruiting
  • Muhimbili National Hospital (MNH)Recruiting

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm Type

Experimental

Experimental

Experimental

Arm Label

Esophageal Squamous Cell Carcinoma (ESCC) Cases

Non-ESCC, Esophageal squamous dysplasia (ESD) Cases

Non-ESCC, Control Group

Arm Description

Each study participant will undergo esophageal sponge sampling using the 'EsophaCap' sponge device. Group 1 will include a safety-phase, which will consist of a lead-in cohort of 8 patients with ESCC. Subsequent recruitment of ESCC Cases (Group 1) will not commence until the Data Safety Monitoring Board (DSMB) has deemed the safety lead-in data appropriate for continuation. Following collection of esophageal cells, samples will be assessed using the EsoCAN assay. Study participant evaluations will be taken at baseline, immediately after undergoing esophageal sponge sampling, and 7 days following administration of the 'EsophaCap' device.

Each study participant will undergo (1) Esophagogastroduodenoscopy (EGD) with chromoendoscopic screening and possible biopsy, and (2) esophageal sponge sampling using the 'EsophaCap' sponge device. Pathology from chromoendoscopic screening will be used to categorize non-ESCC study participants as esophageal squamous dysplasia (ESD) cases and controls. Following collection of esophageal cells, samples will be assessed using the EsoCAN assay. Study participant evaluations will be taken at baseline, immediately after undergoing esophageal sponge sampling, and 7 days following administration of the 'EsophaCap' device.

Each study participant will undergo (1) Esophagogastroduodenoscopy (EGD) with chromoendoscopic screening and possible biopsy, and (2) esophageal sponge sampling using the 'EsophaCap' sponge device. Pathology from chromoendoscopic screening will be used to categorize non-ESCC study participants as esophageal squamous dysplasia (ESD) cases and controls. Following collection of esophageal cells, samples will be assessed using the EsoCAN assay. Study participant evaluations will be taken at baseline, immediately after undergoing esophageal sponge sampling, and 7 days following administration of the 'EsophaCap' device.

Outcomes

Primary Outcome Measures

Proportion of True-Positives (sensitivity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESCC cases & controls only)
The proportion of participants with a positive EsoCAN assay result, among patients with histologically-confirmed Esophageal Squamous Cell Carcinoma (ESCC). The following equation will be used as a cut point for ESCC using the EsoCAN assay [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of greater than -2.327 is classified as positive.
Proportion of True-Negatives (specificity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESCC cases & controls only)
The proportion of participants with a negative EsoCAN assay result for will be reported, among study participants who are classified as controls. The following equation will be used as a cut point for ESCC using the EsoCAN assay [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of less than -2.327 is classified as negative.

Secondary Outcome Measures

Proportion of True-Positives (sensitivity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESD cases & controls only)
The proportion of participants with both a positive EsoCAN assay result, among patients with histologically-confirmed Esophageal Squamous Dysplasia (ESD). The following equation will be used as a cut point for ESD: [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of greater than -2.327 is classified as positive.
Proportion of True-Negatives (specificity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESD cases & controls only)
The proportion of participants with a negative EsoCAN assay result will be reported. The following equation will be used as a cut point for ESD: [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of less than -2.327 is classified as negative.
Proportion of study participants who successfully swallow the esophageal sponge device
The success of swallowing the esophageal sponge device will be determined by the clinical team overseeing the EsophaCap' administration and categorized as a dichotomous response of Yes (successful) or No (not successful).
Proportion of study participants who experienced an esophageal sponge device-related adverse event in the lead in cohort of ESCC Cases
Adverse events for the lead in cohort with histologically confirmed or suspected ESCC based upon pre-specified clinical criteria will be reported and graded and classified according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0
Median Acceptability Scores
Participants will be asked to rate their satisfaction with their experience with the EsophaCap sponge procedure after the procedure is complete by selecting a score on a scale with corresponding facial images with scores ranging between 0='Best Experience' (large smile on facial expression) to 10='Worst experience' (crying and frowning facial expression).

Full Information

First Posted
August 25, 2021
Last Updated
November 9, 2022
Sponsor
University of California, San Francisco
Collaborators
National Cancer Institute (NCI), Johns Hopkins University, Muhimbili University of Health and Allied Sciences, CapNostics, LLC
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1. Study Identification

Unique Protocol Identification Number
NCT05028725
Brief Title
Novel Strategy for Early Detection of Esophageal Squamous Cell Carcinoma
Official Title
Investigation of a Novel Strategy for Early Detection of Esophageal Squamous Cell Carcinoma
Study Type
Interventional

2. Study Status

Record Verification Date
November 2022
Overall Recruitment Status
Recruiting
Study Start Date
May 16, 2022 (Actual)
Primary Completion Date
December 31, 2023 (Anticipated)
Study Completion Date
December 31, 2023 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
University of California, San Francisco
Collaborators
National Cancer Institute (NCI), Johns Hopkins University, Muhimbili University of Health and Allied Sciences, CapNostics, LLC

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
Yes
Product Manufactured in and Exported from the U.S.
Yes
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
In the current protocol, we propose a study to evaluate a novel, combined esophageal sponge-methylation biomarker strategy for the early detection of esophageal squamous cell carcinoma (ESCC) as well as its precursor, esophageal squamous dysplasia (ESD). This strategy leverages the 'EsophaCap', a swallowable, retrievable sponge, with subsequent evaluation of the sample using a novel molecular biomarker assay. This biomarker assay evaluates methylation levels in three genes, which have been shown to differ significantly between ESCC cases and controls in pilot studies. Detection of methylation markers highly associated with ESCC could help identify patients with concurrent ESCC or at high risk of imminently developing this condition. If successful, this strategy could result in a paradigm shift for esophageal cancer control strategies in Tanzania and other high-incidence ESCC regions.
Detailed Description
PRIMARY OBJECTIVE: I. To evaluate the sensitivity and specificity of a diagnostic strategy combining esophageal sponge sampling with the 'EsophaCap' sponge device with use of the EsoCAN assay, a novel molecular biomarker assay, among patients with histologically-confirmed ESCC cases and controls. SECONDARY OBJECTIVES: I. To evaluate the sensitivity and specificity of a diagnostic strategy combining esophageal sponge sampling with the 'EsophaCap' sponge device with use of the the EsoCAN assay, among patients with histologically-confirmed ESD and controls. II. To evaluate the safety and feasibility of 'EsophaCap' a swallowable and retrievable sponge, as a non-invasive strategy for screening and early detection of ESCC and its precursor, ESD, in Tanzania. EXPLORATORY OBJECTIVES: I. To evaluate the sensitivity and specificity of a diagnostic strategy combining esophageal sponge sampling using the 'EsophaCap' with standard cytology, among patients with histologically-confirmed ESCC and controls. II. To evaluate the sensitivity and specificity of a diagnostic strategy combining esophageal sponge sampling using the 'EsophaCap' with standard cytology, among patients with histologically-confirmed ESD and controls. OUTLINE: Each participant will undergo esophageal sponge sampling suing the 'EsophaCap' sponge device. Participants will be on study for up to 38 days.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Esophageal Squamous Cell Carcinoma, Esophageal Squamous Dysplasia
Keywords
EsophaCap, Biomarker Detection, Cancer Detection, Chromoendoscopic screening

7. Study Design

Primary Purpose
Diagnostic
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
289 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Esophageal Squamous Cell Carcinoma (ESCC) Cases
Arm Type
Experimental
Arm Description
Each study participant will undergo esophageal sponge sampling using the 'EsophaCap' sponge device. Group 1 will include a safety-phase, which will consist of a lead-in cohort of 8 patients with ESCC. Subsequent recruitment of ESCC Cases (Group 1) will not commence until the Data Safety Monitoring Board (DSMB) has deemed the safety lead-in data appropriate for continuation. Following collection of esophageal cells, samples will be assessed using the EsoCAN assay. Study participant evaluations will be taken at baseline, immediately after undergoing esophageal sponge sampling, and 7 days following administration of the 'EsophaCap' device.
Arm Title
Non-ESCC, Esophageal squamous dysplasia (ESD) Cases
Arm Type
Experimental
Arm Description
Each study participant will undergo (1) Esophagogastroduodenoscopy (EGD) with chromoendoscopic screening and possible biopsy, and (2) esophageal sponge sampling using the 'EsophaCap' sponge device. Pathology from chromoendoscopic screening will be used to categorize non-ESCC study participants as esophageal squamous dysplasia (ESD) cases and controls. Following collection of esophageal cells, samples will be assessed using the EsoCAN assay. Study participant evaluations will be taken at baseline, immediately after undergoing esophageal sponge sampling, and 7 days following administration of the 'EsophaCap' device.
Arm Title
Non-ESCC, Control Group
Arm Type
Experimental
Arm Description
Each study participant will undergo (1) Esophagogastroduodenoscopy (EGD) with chromoendoscopic screening and possible biopsy, and (2) esophageal sponge sampling using the 'EsophaCap' sponge device. Pathology from chromoendoscopic screening will be used to categorize non-ESCC study participants as esophageal squamous dysplasia (ESD) cases and controls. Following collection of esophageal cells, samples will be assessed using the EsoCAN assay. Study participant evaluations will be taken at baseline, immediately after undergoing esophageal sponge sampling, and 7 days following administration of the 'EsophaCap' device.
Intervention Type
Device
Intervention Name(s)
EsophaCap Sponge
Other Intervention Name(s)
EsophaCap Sponge Device, EsophaCap Swallowable Sponge device
Intervention Description
Non-invasive strategy to sample esophageal tissue
Intervention Type
Procedure
Intervention Name(s)
Chromoendoscopy
Other Intervention Name(s)
Lugol's iodine chromoendoscopy, Chromoendoscopic screening
Intervention Description
Lugol's iodine chromoendoscopy is a technique that is used to identify mucosal abnormalities of the esophagus
Intervention Type
Device
Intervention Name(s)
EsoCAN assay
Intervention Description
Biomarker Test
Primary Outcome Measure Information:
Title
Proportion of True-Positives (sensitivity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESCC cases & controls only)
Description
The proportion of participants with a positive EsoCAN assay result, among patients with histologically-confirmed Esophageal Squamous Cell Carcinoma (ESCC). The following equation will be used as a cut point for ESCC using the EsoCAN assay [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of greater than -2.327 is classified as positive.
Time Frame
Up to 38 days
Title
Proportion of True-Negatives (specificity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESCC cases & controls only)
Description
The proportion of participants with a negative EsoCAN assay result for will be reported, among study participants who are classified as controls. The following equation will be used as a cut point for ESCC using the EsoCAN assay [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of less than -2.327 is classified as negative.
Time Frame
Up to 38 days
Secondary Outcome Measure Information:
Title
Proportion of True-Positives (sensitivity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESD cases & controls only)
Description
The proportion of participants with both a positive EsoCAN assay result, among patients with histologically-confirmed Esophageal Squamous Dysplasia (ESD). The following equation will be used as a cut point for ESD: [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of greater than -2.327 is classified as positive.
Time Frame
Up to 38 days
Title
Proportion of True-Negatives (specificity) detected with the EsoCAN assay after specimen collection using 'EsophaCap' sponge sampling (ESD cases & controls only)
Description
The proportion of participants with a negative EsoCAN assay result will be reported. The following equation will be used as a cut point for ESD: [0.139*log2(gene A)] + [0.176* log2(gene B)] + [0.185* log2(gene C)], whereas a cutoff value (for the numerical index produced by this formula) of less than -2.327 is classified as negative.
Time Frame
Up to 38 days
Title
Proportion of study participants who successfully swallow the esophageal sponge device
Description
The success of swallowing the esophageal sponge device will be determined by the clinical team overseeing the EsophaCap' administration and categorized as a dichotomous response of Yes (successful) or No (not successful).
Time Frame
Up to 38 days
Title
Proportion of study participants who experienced an esophageal sponge device-related adverse event in the lead in cohort of ESCC Cases
Description
Adverse events for the lead in cohort with histologically confirmed or suspected ESCC based upon pre-specified clinical criteria will be reported and graded and classified according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0
Time Frame
Up to 38 days
Title
Median Acceptability Scores
Description
Participants will be asked to rate their satisfaction with their experience with the EsophaCap sponge procedure after the procedure is complete by selecting a score on a scale with corresponding facial images with scores ranging between 0='Best Experience' (large smile on facial expression) to 10='Worst experience' (crying and frowning facial expression).
Time Frame
Up to 38 days

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: ESCC Cases (Group 1): Male or female >= 18 years of age at screening visit. Patients are currently seen for clinical care at Muhimbili National Hospital (MNH)-Upanga or at MNH-Mloganzila. Patient meets one of the following two criteria- Patients with a confirmed diagnosis of ESCC as evidenced by histological confirmation OR Patient planned to undergo EGD with biopsy for suspected ESCC based upon any one of the following clinical criteria: (1) findings on computed tomography (CT) scan; (2) findings on barium swallow; (3) findings on endoscopy without biopsy confirmation, (4) symptoms of dysphagia and/or odynophagia without an alternative explanation for these symptoms. Patient must be able to swallow liquid (Ogilvie's score < 3). Patients must be well enough to participate in a 20-minute interview or have a close relative who is able to do so on their behalf. Patients must be willing to be contacted either in person or via phone 7-10 days following administration of the 'EsophaCap' sponge device. Native of Tanzania. Written informed consent (and assent when applicable) obtained from subject or subject's legal representative and ability for subject to comply with the requirements of the study. Non-ESCC study participants (Group 2): Male or female ≥ 18 years of age at screening visit. Patients are currently seen for clinical care at MNH-Upanga or at MNH-Mloganzila. Patient is scheduled to undergo EGD for a suspected non-malignant condition with no symptoms concerning for esophageal cancer (i.e. dysphagia or odynophagia). Patient must be able to swallow liquid (Ogilvie's score < 3). Patients must be well enough to participate in a 20-minute interview or have a close relative who is able to do so on their behalf. Patients must be willing to be contacted either in person or via phone 7-10 days following administration of the 'EsophaCap' sponge device. Native of Tanzania. Written informed consent (and assent when applicable) obtained from participant or participant's legal representative and ability for subject to comply with the requirements of the study. Exclusion Criteria: ESCC Cases (Group 1): Known pregnancy during participation in the study. Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data. Clinical instability (i.e. hypotension or a recent cardiovascular event). Any history of upper gastrointestinal bleeding within the past 3 months (including reported history of hematemesis and/or melena). Diagnosis of peptic ulcer disease within the last 3 months. Known history of esophageal varices. Patients taking anticoagulation or antiplatelet therapy/medication (warfarin, clopidogrel, aspirin, heparin or enoxaparin) for high-risk conditions. Patients with an active extra-esophageal malignancy (not currently in remission). Patient with a known history of a non-malignant esophageal stricture. Patients with esophageal stents currently in place. Patients with a history of radiation therapy to the head, neck, any part of the gastrointestinal tract (including esophagus) or thorax. Patients who have previously received chemotherapy in the last 12 months Patients with any history of major surgery for esophageal cancer (e.g. esophageal bypass, esophagectomy, etc.). Patients who have a known history of or clinical symptoms concerning for tracheoesophageal fistula (aspiration history, severe cough) Patients with a known history of small bowel obstruction Patients with a history of bleeding complications during esophageal biopsy. Patients with any history of a head and neck malignancy. Patients with a known bleeding disorder Patients with known thrombocytopenia (less than 50,000 platelets per microliter) Individuals who are not permanent residents or natives of Tanzania. Inability to follow instructions. Unable to provide informed consent. Non-ESCC study participants (Group 2): Known pregnancy during participation in the study. Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data. Clinical instability (i.e. hypotension or a recent cardiovascular event). Any history of upper gastrointestinal bleeding within the past 3 months (including reported history of hematemesis and/or melena). Diagnosis of peptic ulcer disease within the last 3 months. Known history of esophageal varices. Patients taking anticoagulation or antiplatelet therapy/medication (warfarin, clopidogrel, aspirin, heparin or enoxaparin) for high-risk conditions. Patients with an active extra-esophageal malignancy (not currently in remission) or any history of a non-cutaneous malignancy diagnosed within the previous five years. Patient with a known history of esophageal strictures disabling passage of the capsule. Patient with esophageal stents currently in place. Patients with a history of radiation therapy to the head, neck, any part of the gastrointestinal tract (including esophagus) or thorax. Patients with a known history of small bowel obstruction Patients with a known bleeding disorder Patients with known thrombocytopenia (less than 50,000 platelets per microliter) Individuals who are not permanent residents or natives of Tanzania. Allergy to iodine Presence of goiter. Inability to follow instructions. Unable to provide informed consent
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Geoffrey Buckle, MD, MPH
Phone
508-380-9129
Email
geoffrey.buckle@ucsf.edu
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Katherine Steitz, MD, MPH
Organizational Affiliation
University of California, San Francisco
Official's Role
Principal Investigator
First Name & Middle Initial & Last Name & Degree
Geoffrey Buckle, MD, MPH
Organizational Affiliation
University of California, San Francisco
Official's Role
Principal Investigator
Facility Information:
Facility Name
Muhimbili National Hospital (MNH)
City
Dar Es Salaam
State/Province
Mloganzila
Country
Tanzania
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Yona Ringo
Phone
+255 756 680 746
Email
yona.skills@gmail.com
Facility Name
Muhimbili National Hospital (MNH)
City
Dar Es Salaam
State/Province
Upganda
Country
Tanzania
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Yona Ringo
Phone
+255 756 680 746
Email
yona.skills@gmail.com

12. IPD Sharing Statement

Plan to Share IPD
No

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Novel Strategy for Early Detection of Esophageal Squamous Cell Carcinoma

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