Influence of Food Preferences on the Occurrence of Undernutrition in Treated Patients for Bronchopulmonary Carcinoma Non-small Cell Stage IV

• Test Leeds Food Preference Questionnaire (LFQP-France) (Other): The version of this questionnaire has been adapted to French eating habits. and based on the presentation of food photos, each representing one of the four categories below : salty-high in fat / salty-low fat / sugary-high fat / sweet-low fat The answers given to the LFQP predict a more or less caloric food intake. This tool makes it possible to objectify changes in eating behavior according to the nutritional status and protein status of patients. The implied wanting score for salty-high-fat, salty-low-fat, sweet-high-fat, and sweet-low-fat foods is calculated based on the frequency and speed of choice for one food type out of 150 combinations. For each of the food modalities, the software will return a score with its standard deviation. The modality preferred by the patient is the one with the highest score

Primary outcomes

• Measurement of implicit wanting by the LFQP-France questionnaire [During patient follow-up (12 months max)]: The food category with the highest implicit wanting score will be retained as characterizing the patient's food preferences. The 4 categories concerned are as follows: * salty high in fat * salty-low fat * sweet-high fat * sweet-low fat

Secondary outcomes

• The occurrence of undernutrition within 6 months after inclusion, in patients not undernourished at inclusion [During 6 months]: The food category with the highest implicit wanting score will be retained as characterizing the patient's food preferences. The 4 categories concerned are as follows: * salty high in fat * salty-low fat * sweet-high fat * sweet-low fat
• The impact of food preferences (liking and explicit wanting) assessed by the LFQP-France questionnaire on the prevalence and incidence of undernutrition in the 6 months after inclusion. [During 6 months]: The food category with the highest implicit wanting score will be retained as characterizing the patient's food preferences. The 4 categories concerned are as follows: * salty high in fat * salty-low fat * sweet-high fat * sweet-low fat
• The impact of food preferences (liking, explicit lwanting and implicit wanting) assessed by the LFQP-France questionnaire on the severity of undernutrition [through study completion, an average of 1 year]: The severity of malnutrition will be determined by serum albumin.
• the impact of food preferences (liking, explicit wanting and implicit wanting) assessed by the LFQP-France questionnaire on quality of life [through study completion, an average of 1 year]: With the EORTC QLQ-C30 and QLQ-CL13 tests at inclusion, then at each follow-up visit and until exit from the study (premature exit or end of study
• The impact of the type of 1st line treatment on food preferences (chemotherapy based on platinum salt versus immunotherapy versus targeted therapy) [through study completion, an average of 1 year]: 1st line treatments considered categorized into 3 classes: platinum-based chemotherapy versus immunotherapy versus targeted therapy

Sex: All, ages: 18 Years to 70 Years

Inclusion Criteria:

* Diagnosis of stage IV non-small cell lung carcinoma with indication for first-line systemic treatment (chemotherapy, immunotherapy or specific treatment, in particular tyrosine kinase inhibitors) according to current French recommendations.
* Age over 18 and under 70
* Patient speaking and reading French fluently
* Affiliation to a social security scheme
* Patient able and willing to follow all study procedures in accordance with the protocol
* Patient having understood, signed and dated the consent form

Exclusion Criteria:

* Patient requiring hospitalization for more than 48 hours for the administration of the first course of treatment
* Patient benefiting from antibiotic therapy for the treatment of an acute infection
* Psychiatric, cognitive or neurological disorders making it impossible to assess food preferences and/or any impossibility to undergo medical monitoring for the trial for geographical, social or psychological reasons.
* Daily alcohol consumption
* Chest radiotherapy treatment
* Pregnant woman, likely to be, or breastfeeding
* Persons deprived of liberty or under guardianship