Nutritional Status in Locally Advanced or Metastatic Solid Cancer Patients in Spain: the NutriOncoSearch (NOS) Study

Study Title:

An observational study of the Nutritional status in locally advanced or metastatic solid cancer patients while receiving immunotherapy in Spain: the NutriOncoSearch (NOS) study.

Research Question:

What is the current nutritional status in advanced cancer patients receiving immunotherapy or any other targeted therapies in Spain?

Study Background \& Rationale:

Malnutrition is a common medical problem in oncology patients. Between 15 and 40% of patients with cancer present weight loss at diagnosis and the incidence of malnutrition increases over the course of the disease until 80% of all cancer patients. It is well known that the presence of malnutrition negatively affects patients' evolution and their quality of life, increasing the incidence of infection, hospital stay, and mortality.

The new knowledge of cancer biology has made it possible to know the mechanisms of cancer progression. These mechanisms include:

1. Self-sufficiency in growth signals.
2. Insensitivity to anti-growth signals.
3. Evading apoptosis.
4. No breaks in the replicate potential
5. Sustained angiogenesis. New treatments have been developed thanks to this knowledge including molecular target treatments aimed at these cancer mechanics and to reverse the anti-tumor capacity of the immune system. However, these treatments have different toxicities than classic and anachronistic treatments such as chemotherapy and radiotherapy, including alterations in glucose metabolism, endocrinopathies, rhabdomyolysis, etc. that can alter both the patient's nutritional status and quality of life. Additionally, a deficient nutritional status can have an impact on the intestinal microbiota, compromising the efficacy of the new anti-tumor treatments.

Regarding the nutritional status of cancer patients, some studies have been developed. In France, a 1-day prospective prevalence survey was carried out in 154 public or private hospital wards in 24 French cities. The investigators were to include all patients with cancer who were present at the hospital on the day of the survey and who agreed to participate. The results of this study showed a high prevalence of malnutrition (39%) and a high rate of malnourished patients not receiving nutrition support (42.4%). Recently, the PreMio study (Italy) assessed the nutritional status of cancer patients on their first visit for care. Findings showed that first-visit PreMiO patients were often malnourished or at risk for malnutrition when they entered the study- 40% to 80% of patients had signs and indicators of nutritional impairment- even in early disease stages, particularly in gastroesophageal, pancreatic, head and neck, and colorectal cancer patients.

In Spain, two old studies analyzed the nutritional situation of Spanish oncology patients. The first one is a multicentric study published in 2005 with data from outpatients and hospitalized patients. In this study, the scored PG-SGA indicated that 52% of the patients were moderately or severely malnourished and, of the total population analyzed, 97.6% required some form of nutritional recommendation to prevent, or reverse malnutrition. Since then, only the sub-analysis of the PREDYCES study gave information on the nutritional status of cancer patients (hospitalized) in our country (8). This analysis revealed that 36.4% of hospitalized oncology patients were at nutritional risk at the time of hospital discharge. It also demonstrated its significant association with longer hospital stays and higher healthcare costs. Despite all of this, only 1/3 of patients at nutritional risk received nutritional support. There are little data on the nutritional status of non-hospitalized oncology patients and, to our knowledge, none of them analyzed the effects of new target therapies. As these new therapies represent the future of oncology, it´s of most importance to understand what this effect is. The aim of this observational study is to determine the prevalence of malnutrition (or risk of malnutrition) in the Spanish population of outpatients that receive immunotherapy or any other targeted therapies For that end the investigators would like to explore nutritional status using validated tools like NutriScore, and Global Subjective assessment, Spanish version.

Study Design

Study Type: Clinical Non-Interventional

Condition to be studied and incidence: Nutritional status

Due to the epidemiologic characteristics of this study, the investigators don´t ask about adverse events or their relationship with specific drugs: the investigators will ask for generic groups of agents or treatments.

Study Population (ages, gender, relevant disease states): Adult patients, both sexes, Stages III-IV all solid cancers.

Duration of subject participation: This a descriptive, prospective and analytic study. Patients will be asked once, and no more.

The total number of subjects to be enrolled: 610 subjects.

• The number of study or comparison groups: two 2:1 relation. 408 patients with immunotherapy with or without chemotherapy or radiotherapy and 204 with chemotherapy or radiotherapy alone, both of them in the first line of treatment,
• The study will be performed on multiple different days: the recruitment will be concomitant and limited to a minimum of 30 and a maximum of 70 patients depending on the number of patients the center deals with. The estimation is that each center will dedicate from one to two weeks to recruit the total number of patients.

Specific details of Treatment/Intervention: (prescription and/or therapy, devices, equipment, solutions, product to be used in conducting the study:

Not applicable.

Efficacy Assessments Not applicable.

Statistical Methods (for analyzing primary \& secondary endpoints):

Descriptive statistics like clinical and sociodemographic characteristics of the studied population will be expressed by means and SDs for the continuous variables and frequency distribution for the qualitative variables. The investigators will use the ӽ2 test and Fisher exact test for the qualitative data set and Student t-test for quantitative data, with a significance level of .05 and a confidence interval of 95%. Multivariate logistic regression analysis and odds ratios can be efficiently conducted as a measure of statistical correlation to link nutrition status and associated factors.

Based on the number of cancer diagnoses in 2019 in Spain (REDECAN), there will be an incidence of 277.234 new cases, with a prevalence of 772.853 cases (5-years projection). With this population the investigators calculate a proportion estimation, with a confidence interval 1-α of 99%, d= 3%, p= 0,5, the sample size is 504, with an expected loss of (R=)15% sample size is 610 subjects. Investigators propose a stratification in two groups, in a 2:1 proportion, 408 patients in the immunotherapy-only group and 204 patients in the control, chemotherapy-in-combination group.