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Gastric CancerNCT04000425

Potential Clinical Utilities of Circulating Tumor DNA in Gastric Cancer

An observational study of Gastric Cancer, run by Shanghai Zhongshan Hospital at 1 site in China.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

This study is designed to evaluate the potential clinical utility of ctDNA in the field of gastric cancer treatment,especially the usage of an indicator of MRD(minimal residual disease) in post radical gastrectomy patients. Read more about this study

Who is it for?
Ages 18 to 75 years
Conditions the study is for
Gastric Cancer
What is being tested?
AVENIO ctDNA surveillance kit
How many people
55 participants
Where
1 siteChina
Study dates
1 Dec 2018to 31 May 2021
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 75 years
  • All sexes
  • Adult, Older adult

Study population: Stomach adenocarcinoma patients who plan to receive radical gastrectomy and continuous circulating tumor DNA monitoring

Who may be able to join

  • Male or female patients age 18 - 75.
  • Eastern Cooperative Oncology Group (ECOG) performance status 0,1 or 2.
  • Histologically proven primary stomach adenocarcinoma with Lauren type by gastroscopic biopsy before operation.
  • Clinical stage is cT3/4N+M0 and the tumor is resectable in initial evaluation.
  • No preoperative tumor therapy, including chemotherapy, radiotherapy, et al.
  • No concomitant other malignant tumor or treated malignant tumor within last five years.
  • Signed informed consent.
  • Consent to provide research blood/tissue samples and clinicopathological information.

Who cannot join

  • Radical gastrectomy was found cannot be achieved during operation due to metastasis or adjacent organ invasion.
  • Only preoperative or postoperative blood sample was harvest or qualified.
  • No qualified paired tissue samples.
  • No complete clinicopatholoical information and follow-up.
  • Presence of any systemic illness incompatible with participation in the clinical trial or inability to provide written informed consent.

Trial locations and contacts

1 site in 1 country.

China1 site, 1 recruiting
  • ZhongShan hospital FuDan university

    Shanghai, Shanghai Municipality, 200032

    Zhaoqing Tang, MD, tang.zhaoqing@zs-hospital.sh.cn

    Recruiting

Other trials in China

About this study

Official title: Evaluating Potential Clinical Utilities of Circulating Tumor DNA in Gastric Cancer

This study is designed to evaluate the potential clinical utility of ctDNA in the field of gastric cancer treatment,especially the usage of an indicator of MRD(minimal residual disease) in post radical gastrectomy patients. The primary purpose of this trial is to demonstrate if the postoperative ctDNA analysis could be used as an indicator of MRD or adjuvant chemotherapy response in advanced gastric cancer after radical gastrectomy.The second purpose is to describe the profile of ctDNA in gastric cancer.

Read the detailed description

Gastric cancer is an important health problem, being the fifth most common cancer and the third leading cause of cancer related death worldwide.Incidence shows clear regional and sex variations-rates are highest in Eastern Asia, Eastern Europe, and South America and lowest in Northern and Southern Africa. In China, gastric cancer accounts for nearly 16% of all malignant tumors and more than 80% of gastric cancer are in advanced stage.

Minimal residual disease (MRD) was proposed to describe the remaining tumor cells after treatment with curative intent. For curable gastric cancer, MRD means residential cancer cells after radical gastrectomy which share phenotypic similarity and genetic heritage with the original tumor. Treating MRD can increase the rates of cure had been supported by the experience of using adjuvant therapy for some type of solid tumor (for example, colorectal cancer, breast cancer). The challenge in monitoring the MRD in gastric cancer patients is that there is no very sensitive method. Computed tomography(CT) and blood tumor markers are either difficult to detect peritonial dissemination, the most frequent recurrent pattern in gastric caner or with limited sensitivity and specificity.

Tumor-specific DNA mutations detected in the cell-free component of peripheral blood, which is known as circulating tumor DNA (ctDNA), in most patients, allow for the noninvasive molecular characterization detection of tumors, including genetic changes that are revealed by the selective pressure of adjuvant therapies. Considering the origin of ctDNA, it can be from different subclones of primary tumor or both primary and metastatic tumors, the ctDNA may overcome the problems caused by tumor heterogeneity. Additionally, the short half-life of ctDNA, about 2 hours, makes ctDNA an ideal dynamic marker of tumor bulk.

In summary, the ctDNA is a good candidate to be a new kind of blood tumor marker. The preliminary studies had shown very good prospects in some tumors, including breast caner and colon cancer.But little was known in gastric cancer, so we designed this study to demonstrate the potential clinical utility of ctDNA in the field of gastric cancer treatment, especially the usage of an indicator of MRD in post radical gastrectomy patients.

Conditions
Gastric Cancer
Being tested
AVENIO ctDNA surveillance kit
Keywords
Gastric Cancer, Circulating Tumor DNA, Minimal Residue Disease, Chemotherapy Response
Medical subject headings
Stomach Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AVENIO ctDNA surveillance kitCombination product

    AVENIO circulating tumor DNA (ctDNA) Analysis Kits is a portfolio of three next-generation sequencing (NGS) liquid biopsy assay kits for oncology research: the AVENIO ctDNA Targeted Kit, Expanded Kit and Surveillance Kit.

Study groups in NCT04000425
Study groupRoleWhat they receive
ctDNA detectionThe blood samples for ctDNA and other tumor markers (such as CEA, et al.) will be first collected within 7 days before surgery, and then be tested after radical gastrectomy in scheduled interval.
Receives: Combination Product: AVENIO ctDNA surveillance kit

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Description of disease recurrence risk according to first positive ctDNA detection

    Time is measured from first positive ctDNA detection to disease-free survival event.

    Measured: 2 years

  2. Description of ctDNA changing to adjuvant chemotherapy response

    For subjects with postoperative positive ctDNA, time is measured from first adjuvant chemotherapy to first negative ctDNA detection.

    Measured: 2 years

Secondary outcomes (2)
  1. Leading time between ctDNA detection and disease recurrence detected by conventional methods

    Time is measured between first positive ctDNA detection and first recurrence detected by conventional methods.

    Measured: 2 years

  2. The ctDNA level/mutations in gastric cancer preoperatively

    Profiling of the most frequently detected gene mutations and level of mutations in preoperative ctDNA.

    Measured: Within 7 days before operation

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Jun 2019
  2. Study start1 Dec 2018
  3. Primary completion1 Mar 2021 (estimated)
  4. Study completion31 May 2021 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
55 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04000425
Sponsor's protocol ID
ZSGC-005
Status last verified
Jun 2019
First submitted
26 Jun 2019
Last updated
27 Jun 2019
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

An observational study of Gastric Cancer, run by Shanghai Zhongshan Hospital at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 27 Jun 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Zhaoqing Tang, MD (86-21-64041990, tang.zhaoqing@zs-hospital.sh.cn), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Description of disease recurrence risk according to first positive ctDNA detection (time frame: 2 years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jun 2019.

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