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Lung CancerNCT02161523

The Impact of Lung Cancer-derived Fibroblasts on Mast Cells Activation

An observational study of Lung Cancer, run by Meir Medical Center.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

In addition to their role in allergic inflammation, mast cells are often found at the site of tumors. They have been attributed both to pro- and anti-tumorigenic roles depending on the tumor type. Read more about this study

Who is it for?
Any age
Conditions the study is for
Lung Cancer
How many people
20 participants
Where
No sites listed yet
Study dates
1 Jul 2014to 1 Jun 2015
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 Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: Patient with non small cell lung carcinoma that need a surgery without connection to this experiment

Who may be able to join

  • Patient with non small cell lung carcinoma

Who cannot join

  • none

About this study

In addition to their role in allergic inflammation, mast cells are often found at the site of tumors. They have been attributed both to pro- and anti-tumorigenic roles depending on the tumor type. Secretion of mast cell mediators such as histamine, tryptase, fibroblast growth factor (b-FGF), vascular endothelial growth factor (VEGF) and interleukin-8 (IL-8) can enhance tumor growth and angiogenesis while TNF-a and heparin act as tumor suppressors.

The non-small cell lung cancer constitutes the majority of cases of lung cancer. In lung cancer, mast cell numbers correlate with tumor angiogenesis and poor prognosis.

Read more

In this work, we are interested to determine the factors in lung cancer microenvironment that attribute to mast cell activation. Beside the tumor cells themselves, the cancer microenvironment includes other cells such as fibroblasts. The fibroblasts arising from tumor stroma, called cancer-associated fibroblasts (CAFs), undergo activation, and have different feature compared to normal fibroblasts (NFs). In this work we are interested to determine whether CAF cells derived from lung tumors, together with the lung cancer cells, or microvesicles-derived from these cells, are able to stimulate mast cells to degranulate and/ or to release various cytokines and chemokines.

For this propose, during surgery of patients with lung cancer, we will take unnecessary sample from the cancer and from normal area for purification of CAF or normal fibroblast cells. Those cells will be co-cultured with both lung cancer cell line (A-549) or microvesicles-derived from these cells, and human mast cell line (LAD2). Supernatants will be collected for determine degranulation and cytokine release from these mast cells.

Conditions
Lung Cancer
Keywords
mast cells, lung cancer, cancer associated fibroblasts (CAF)
Medical subject headings
Lung Neoplasms

What is being measured

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

  1. Measuring the levels of b-hexosaminidase (marker for mast cells degranulation ) and the cytokines levels

    Measured: 1-2 weeks

Timeline

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

  1. First posted11 Jun 2014 (estimated)
  2. Study start1 Jul 2014
  3. Primary completion1 Jun 2015
  4. Study completion1 Jun 2015

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
Other
Time perspective
Prospective
Enrolment
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02161523
Sponsor's protocol ID
0059-14-MMC
Other IDs
0059-14-MMC
Status last verified
Mar 2018
First submitted
10 Jun 2014
Last updated
22 Mar 2018
Results posted
No

Questions about this trial

What is this clinical trial studying?

An observational study of Lung Cancer, run by Meir Medical Center.

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 1 inclusion and 1 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: finished, as of the sponsor's last update on 22 Mar 2018. Status can change between updates, so confirm with the study contact before making plans.

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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Measuring the levels of b-hexosaminidase (marker for mast cells degranulation ) and the cytokines levels (time frame: 1-2 weeks). 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 22 Mar 2018.

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