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Retrospective Analysis of the Expression of the Neurotensin Receptor by Metastatic Lung Adenocarcinomas (NTS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02891733
Recruitment Status : Withdrawn (The principal investigator decided to stop the study.)
First Posted : September 7, 2016
Last Update Posted : February 4, 2019
Information provided by (Responsible Party):
Groupe Hospitalier Paris Saint Joseph

Brief Summary:

Lung cancer is the leading cause of cancer mortality in France and worldwide. 60% of patients present themselves with a disease diagnosis immediately metastatic non curable. Adenocarcinomas account for 50% of incident tumors. Treatment is based on the platinum-based chemotherapy with or without maintenance therapy. When there is to exhaust this first line, a second line treatment is offered to the patient. Three drugs are allowed in this situation: docetaxel, erlotinib (inhibitor of the tyrosine kinase activity of the receptor for epidermal growth factor - TKI-EGFR) and pemetrexed (which in fact has become virtually standard in first online and in combination with platinum in all patients with non-squamous cancer, so that his place is in second line reduced facto). There is no recommendation for treatment in third line situation where only erlotinib is allowed.

Most recently, the nivolumab, anti-PD1 monoclonal antibody (which aims to enable immunutaire system) saw its demonstrated effectiveness in the second line and beyond in the two Phase 3 trials where it was compared with docetaxel for the treatment of squamous cell carcinoma and non-squamous. The very recent availability in France of the drug under an ATU fact that it will most likely become a standard second line, which will tend to place the third line docetaxel.

Therefore, erlotinib will be in 4th line situation. However, in the absence of an EGFR mutation (which is only seen in more than 10% of Caucasian patients) use of the drug does not seem appropriate or even harmful. A selection of patients likely to benefit from the prescription of EGFR TKI-is essential.

Neurotensin (NTS) is a polypeptide of 13 amino acids present and active in the central nervous system and the periphery. At the peripheral level, neurotensin is secreted postprandial by endocrine cells in the intestinal mucosa and is involved in the motor functions of the gastrointestinal tract. The effects of neurotensin pass through the activation of three subtypes of receptors which, mainly, NTSR1 and NTSR2 which are receptors coupled to G proteins in the extra-digestive normal tissues, including lung, torque NTS / NTSR1 n is not expressed physiologically. Rather, this complex is likely to recur in tumor tissues.

The mechanism of this effect is derogatory activation torque NTS / NTSR1 of matrix metalloproteinases which causes the release by the cell membrane ligands "EGF-like" and thus, activation of HER receptor (EGFR or HER1, HER2 and HER3). Indeed, in experimental tumors created by subcutaneous injection in athymic mouse cell lines adenocarcinomas NTS + / NTSR1 + (non-mutated EGFR), treatment with erlotinib - which blocks EGFR pathway - causes a significant decrease of tumor growth.

Expression of the neurotensin receptor in cancer cells metastatic primary bronchial adenocarcinoma is not known. Therefore, its pejorative prognostic value is not confirmed in the metastatic setting.

Condition or disease
Metastatic Lung Adenocarcinomas

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Study Type : Observational
Actual Enrollment : 0 participants
Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Retrospective Analysis of the Expression of the Neurotensin Receptor by Metastatic Lung Adenocarcinomas
Actual Study Start Date : March 6, 2017
Actual Primary Completion Date : December 31, 2018
Actual Study Completion Date : December 31, 2018

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. Number of patient expressing Neurotensin receptor ( NTSR1) in their tumor [ Time Frame: Day 1 ]

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients consecutively treated between 2010 and 2015 at St. Joseph hospital (about a hundred patients) and the Saint-Antoine hospital (three hundred patients), holders of a primary lung adenocarcinoma in the metastatic setting and having all received the same first-line chemotherapy with a platinum agent (cisplatin or carboplatin) and pemetrexed (Alimta °)

Inclusion Criteria:

  • Patients with adenocarcinoma in metastatic stage
  • Patients received
  • The same first-line chemotherapy with a platinum agent (cisplatin or carboplatin) and pemetrexed (Alimta °)

Exclusion Criteria:

  • No exclusion criteria
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Responsible Party: Groupe Hospitalier Paris Saint Joseph Identifier: NCT02891733    
Other Study ID Numbers: NTS
First Posted: September 7, 2016    Key Record Dates
Last Update Posted: February 4, 2019
Last Verified: August 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Groupe Hospitalier Paris Saint Joseph:
Expression of the Neurotensin
Additional relevant MeSH terms:
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Adenocarcinoma of Lung
Neoplasms, Glandular and Epithelial
Neoplasms by Histologic Type
Lung Neoplasms
Respiratory Tract Neoplasms
Thoracic Neoplasms
Neoplasms by Site