TY  - JOUR
AU  - Belfrage, Emma
AU  - Ek, Sara
AU  - Johansson, Åsa
AU  - Brauner, Hanna
AU  - Sonesson, Andreas
AU  - Drott, Kristina
PY  - 2024
DA  - 2024/4/4
TI  - Predictive and Prognostic Biomarkers in Patients With Mycosis Fungoides and Sézary Syndrome (BIO-MUSE): Protocol for a Translational Study
JO  - JMIR Res Protoc
SP  - e55723
VL  - 13
KW  - mycosis fungoides
KW  - Sézary syndrome
KW  - prognostic
KW  - predictive
KW  - protocol
KW  - translational study
KW  - cutaneous T-cell lymphomas (CTCL)
KW  - skin microbiota
KW  - immunology
KW  - tissue microenvironment
KW  - epigenetics
KW  - quality of life
KW  - skin infection
KW  - Staphylococcus aureus
KW  - progression of disease
KW  - skin barrier
KW  - prognostic biomarkers
KW  - adult
KW  - adults
KW  - elderly
KW  - spatial
KW  - microbiological sampling
KW  - blood
KW  - study protocol
AB  - Background: Cutaneous T-cell lymphoma (CTCL) is a rare group of lymphomas that primarily affects the skin. Mycosis fungoides (MF) is the most common form of CTCL and Sézary syndrome (SS) is more infrequent. Early stages (IA-IIA) have a favorable prognosis, while advanced stages (IIB-IVB) have a worse prognosis. Around 25% of patients with early stages of the disease will progress to advanced stages. Malignant skin-infiltrating T-cells in CTCL are accompanied by infiltrates of nonmalignant T-cells and other immune cells that produce cytokines that modulate the inflammation. Skin infection, often with Staphylococcus aureus, is frequent in advanced stages and can lead to sepsis and death. S. aureus has also been reported to contribute to the progression of the disease. Previous reports indicate a shift from Th1 to Th2 cytokine production and dysfunction of the skin barrier in CTCL. Treatment response is highly variable and often unpredictable, and there is a need for new predictive and prognostic biomarkers. Objective: This prospective translational study aims to identify prognostic biomarkers in the blood and skin of patients with MF and SS. Methods: The Predictive and Prognostic Biomarkers in Patients With MF and SS (BIO-MUSE) study aims to recruit 120 adult patients with MF or SS and a control group of 20 healthy volunteers. The treatments will be given according to clinical routine. The sampling of each patient will be performed every 3 months for 3 years. The blood samples will be analyzed for lactate dehydrogenase, immunoglobulin E, interleukins, thymus and activation-regulated chemokine, and lymphocyte subpopulations. The lymphoma microenvironment will be investigated through digital spatial profiling and single-cell RNA sequencing. Microbiological sampling and analysis of skin barrier function will be performed. The life quality parameters will be evaluated. The results will be evaluated by the stage of the disease. Results: Patient inclusion started in 2021 and is still ongoing in 2023, with 18 patients and 20 healthy controls enrolled. The publication of selected translational findings before the publication of the main results of the trial is accepted. Conclusions: This study aims to investigate blood and skin with a focus on immune cells and the microbiological environment to identify potential new prognostic biomarkers in MF and SS. Trial Registration: ClinicalTrials.gov NCT04904146; https://www.clinicaltrials.gov/study/NCT04904146 International Registered Report Identifier (IRRID): DERR1-10.2196/55723 
SN  - 1929-0748
UR  - https://www.researchprotocols.org/2024/1/e55723
UR  - https://doi.org/10.2196/55723
UR  - http://www.ncbi.nlm.nih.gov/pubmed/38436589
DO  - 10.2196/55723
ID  - info:doi/10.2196/55723
ER  -