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NCT Number: NCT06073431

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

This study evaluates cancer-related weight and muscle mass loss, symptoms, and physical function (cachexia) in patients undergoing treatment for colorectal, lung, or pancreatic cancer that cannot be removed by surgery (unresectable) or is stage IV. Patients with these cancer types are at risk for developing cancer cachexia (CC), which is defined as weight loss, muscle loss, and fat loss due to cancer. CC has been associated with reduced physical performance, impaired quality of life, and poorer survival. Many studies that have evaluated treatments for cancer-related weight and muscle loss have aimed to treat all patients with weight loss exactly the same and, unfortunately, have not been successful. Like different cancer types, weight and muscle loss related to cancer may have different causes in different individuals and the best treatment strategy for this condition may not be a one-size-fits-all approach. Information gathered from this study may help researchers develop new diagnostic criteria for CC and design better treatments and clinical trials for cancer-related weight and muscle loss in the future to improve the quality of life in patients with advanced colorectal, lung, or pancreatic cancer.

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Key information

About this 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 computed tomography (CT) or positron emission tomography (PET)/CT scans throughout the study and patients' medical records are also reviewed at baseline, 3-month and 1-year follow-up.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Have a primary diagnosis of unresectable or stage IV 1) non-small cell lung cancer (NSCLC), 2) pancreatic adenocarcinoma, or 3) colorectal cancer
  • Note: Patients do not need to have cachexia to be eligible
  • Plan to start first-line systemic anti-cancer therapy (chemotherapy, immunotherapy, targeted therapy, interventional clinical trial) in the next 6 weeks or has started first-line systemic therapy in the previous 6 weeks.
  • NOTE: Patients who received systemic anti-cancer therapy previously as part of adjuvant or neoadjuvant treatment and have since recurred are still eligible if such treatment ended > 6 months prior to enrollment. Patients receiving concurrent radiation with systemic therapy or received local therapy alone (surgery, radiation therapy [RT]) prior to first line therapy remain eligible. Patients receiving maintenance treatment after first line therapy are not eligible
  • Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1 or 2
  • Be able to understand, speak and read English
  • Be 18 years of age or older

Exclusion criteria

  • Have contraindications to physical function assessments (30-second arm curl, Timed-Up-And-Go test, or 30-second chair-stand test) per the treating provider or their designee
  • Have any planned major surgeries within the next 3 months
  • Have received chemotherapy or surgery for separate primary cancer within the past 3 years other than early local staged non-melanoma skin cancer
  • Be pregnant

Treatment and study plan

Biospecimen Collection

Procedure

Undergo collection of blood and archived tumor samples

Other names: Biological Sample Collection, Biospecimen Collected, Specimen Collection

Computed Tomography

Procedure

Undergo CT or PET/CT scan

Other names: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography

Electronic Health Record Review

Other

Medical records reviewed

Medical Device Usage and Evaluation

Other

Wear actigraph

Physical Performance Testing

Other

Undergo physical function tests

Other names: Physical Fitness Testing, Physical Function Testing

Positron Emission Tomography

Procedure

Undergo PET/CT scan

Other names: Medical Imaging, Positron Emission Tomography, PET, PET Scan, Positron emission tomography (procedure), Positron Emission Tomography Scan, Positron-Emission Tomography, PT

Survey Administration

Other

Complete surveys

Primary outcomes

  1. Identification of multiple distinct diagnostic subtypes within the syndrome of cancer cachexia (CC)

    Time frame: Baseline through study completion, assessed up to 1 year follow up

    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. First, will examine the distributions of each variable and assess the need for using transformations to achieve normality for continuous variables (log transformation, quartiles, or clinically important thresholds), collapsing similar variables into single categories, and excluding conditions that are too rare (< 1% of the cohort). Next, will assess statistical correlations using the Jaccard similarity metric for binary variables and the Pearson or Spearman correlation for continuous variables to determine highly correlated variables that may provide redundant information.

Secondary outcomes

  1. Association of each CC phenotype (clusters) with overall survival

    Time frame: Days from registration (day 0) to death (the event) or the last contact (censored), assessed up to 1 year follow up

    Will be assessed in the Cox regression model. Will estimate the bivariate association where the only independent variables will be the indicators for the cluster membership. Will report the hazard ratio for the association of each CC phenotype, specifying the lowest-risk cluster as the reference. Will assess the influence of selected factors (e.g., age, performance status, and other known prognostic factors) on the association of the cluster with survival by adding the factor to the model as a covariate and keeping those that resulted in 10% or more change in any regression coefficients for cluster membership. Will assess if the association of clusters with survival varies by specific subgroups (e.g., older versus younger age, gender, and cancer type). Will assess the statistical significance interaction of the subgroup with the cluster membership by maximum likelihood test and evaluate the regression coefficients for clusters in each subgroup comparing the direction and magnitude.

  2. Validation of CC diagnostic phenotypes developed in a separate, independent cachexia observational study performed by collaborators at Kaiser Permanente

    Time frame: Up to study completion, assessed up to 1 year

    Study participants will be categorized into the Kaiser Permanente Northern California (KPNC)-derived CC phenotype groups. Will use the final latent class analysis model fit in the KPNC data to compute the posterior probabilities of membership in each latent class for each individual National Cancer Institute Community Oncology Research Program (NCORP) participant based on his/her individual data. Will compare cluster prevalence in each cohort as well as the distributions of the variables used to determine each cluster to investigate patterns of commonality and dissimilarity across the contributing variables. Validation will be determined by fitting University of Rochester Cancer Center (URCC) NCORP participants in KPNC-derived clusters and evaluating each cluster's association with survival. If the ranking of survival (best to worst) among each cluster in the URCC NCORP dataset mirrors the prognostic ranking of clusters in the KPNC dataset, the clusters will be deemed validated.

Sponsors and collaborators

Lead sponsor

University of Rochester

Other

Collaborators

  • National Cancer Institute (NCI)

Registry information

Official study title

Longitudinal Observational Trial to Uncover Subtypes of Cancer Cachexia

Acronym: LOTUS

Important dates

Study start
2023
Primary completion
2027
Study completion
2028
First posted
Oct 10, 2023
Registry last updated
Jan 9, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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