An Observational Research Study to Uncover Subtypes of Cancer Cachexia, LOTUS-CC Study

PRIMARY OBJECTIVE:

I. To identify multiple distinct diagnostic subtypes within the syndrome of CC as defined by host characteristics (e.g. cachexia symptoms, physical activity, physical function, blood biomarkers including hemoglobin and albumin, and body composition) at baseline and change in these factors over time in patients with cancer at high risk for CC.

SECONDARY OBJECTIVES:

I. To determine the association of each CC phenotype with overall survival.

II. To validate CC diagnostic phenotypes developed in a separate, independent cachexia observational study performed by our collaborators at Kaiser Permanente.

III. To collect human samples of blood, tumor tissue, and medical images and build a large, comprehensive CC database clinically annotated with cancer-related outcomes, cachexia symptoms, and physical function data.

EXPLORATORY OBJECTIVE:

I. To evaluate for tumor-derived factors contributing to CC by determining the association between interleukin-6 (IL-6) expression in tumor and IL-6 and CC chemokine ligand 2 (CCL2) levels in the blood in patients with CC.

OUTLINE: This is an observational study.

Patients complete surveys over 30 minutes, undergo physical function tests over 30 minutes, undergo collection of blood and archived tumor samples, and wear actigraph over 24 hours for 7 days to record daily sleep and exercise activity at baseline and 3-month follow-up. Additionally, patients undergo standard of care positron emission tomography (PET)/computed tomography (CT) scans throughout the study and patients' medical records are also reviewed at baseline, 3-month and 1-year follow-up.