The objective of this pilot cohort study is to investigate associations between CIN and changes in gut microbiome composition profiles.
The long-term goal of this study is to alleviate the occurrence of CIN and to improve chemotherapy treatment outcomes. The identification of associations between CIN and chemotherapy-induced changes in gut microbiome composition profiles will increase our understanding of these mechanisms that underlie CIN. An increased understanding of the underlying mechanisms will provide targets for the development of novel interventions to help alleviate CIN.
Study Type
OBSERVATIONAL
Enrollment
13
Patients will collect stool for microbiome analysis at baseline (i.e., 3 +2 days prior to chemotherapy) and again 5-7 days following initiation of chemotherapy. Blood samples will be collected prior to their first chemotherapy treatment, and in the second week after chemotherapy.
Mayo Clinic
Scottsdale, Arizona, United States
Mayo Clinic
Jacksonville, Florida, United States
Mayo Clinic
Rochester, Minnesota, United States
Change in patient recruitment
Evaluate the feasibility of patient recruitment by using descriptive statistics to determine number of patients approached and number of patients enrolled.
Time frame: Baseline, 14 days
Change in patient retention
Evaluate the feasibility of patient retention by using descriptive statistics to determine number of patients who completed the questionnaires at both assessments.
Time frame: Baseline, 14 days
Change in patient specimen collection
Evaluate the feasibility of patient specimen collection by using descriptive statistics to determine number patients who provided stool samples at both assessments.
Time frame: Baseline, 14 days
Change of the gut microbiome
Evaluate for changes in alpha and beta diversity as well as composition of the gut microbiome pre- and post-chemotherapy in patients who do and do not report chemotherapy-induced nausea (CIN) after chemotherapy. Region V3-V5 of the 16s rRNA gene will be targeted for sequencing and submitted to trimmomatic for reads trimming and quality control.
Time frame: Up to 10 months
Associations between microbial composition functional profiles
Examine associations between microbial composition functional profiles pre- and post-chemotherapy in patients who report chemotherapy-induced nausea (CIN) after chemotherapy. Change in relative abundance of genus associated with CIN occurrence will be used to predict the function of the genus. We will use PiCrust to perform functional profiling.
Time frame: Up to 10 months
Evaluate for differentially abundant metabolites
Evaluate for differentially abundant metabolites associated with microbiome diversity in patients who do and do not report chemotherapy-induced nausea (CIN) after chemotherapy. Metabolomics profiling of stool samples pre- and post-chemotherapy using liquid chromatography-tandem mass spectrometry (LC-MS/MS).
Time frame: Up to 10 months
Evaluate for perturbed metabolic pathways
Evaluate for perturbed metabolic pathways associated with microbiome diversity in patients who do and do not report chemotherapy-induced nausea (CIN) after chemotherapy. Metabolomics profiling will be performed on stool samples pre- and post-chemotherapy using liquid chromatography-tandem mass spectrometry (LC-MS/MS), as well as RNA-Seq analyses.
Time frame: Up to 10 months
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.