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A Prospective, US-based Study Assessing Mogamulizumab-associated Rash in Patients Diagnosed With Mycosis Fungoides or Sezary Syndrome and Treated With Standard of Care Mogamulizumab

A Prospective, US-Based Study Assessing Mogamulizumab-Associated Rash in Patients Diagnosed With Mycosis Fungoides or Sézary Syndrome and Treated With Standard of Care Mogamulizumab

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07003100
Enrollment
100
Registered
2025-06-04
Start date
2024-12-06
Completion date
2026-10-19
Last updated
2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Recurrent Mycosis Fungoides, Recurrent Sezary Syndrome, Refractory Mycosis Fungoides, Refractory Sezary Syndrome, Stage IB Mycosis Fungoides and Sezary Syndrome AJCC v8, Stage IIA Mycosis Fungoides and Sezary Syndrome AJCC v8, Stage IIB Mycosis Fungoides and Sezary Syndrome AJCC v8, Stage III Mycosis Fungoides and Sezary Syndrome AJCC v8, Stage IV Mycosis Fungoides and Sezary Syndrome AJCC v8

Brief summary

This study is being done to assess mogamulizumab-associated rash in patients diagnosed with mycosis fungoides or sezary syndrome and treated with standard of care mogamulizumab. One of the most common side effects of mogamulizumab is a rash, currently named mogamulizumab-associated rash (MAR) which can look like MF or SS. However, mogamulizumab-associated rash (MAR) does not indicate failure of mogamulizumab, and may be a sign that the drug is working. If not properly evaluated, mogamulizumab-associated rash (MAR) could be misinterpreted as worsening of mycosis fungoides/sezary syndrome, which could lead doctors to recommend stopping mogamulizumab treatment early. The information learned by doing this research study may help tell the difference between mogamulizumab-associated rash (MAR) (sometimes also called "drug eruption") and worsening of the disease. It may also help to uncover information about the cause of mogamulizumab-associated rash (MAR).

Detailed description

PRIMARY OBJECTIVE: I. To assess the incidence of mogamulizumab-associated rash (MAR) and its association with overall response in patients with cutaneous T-cell lymphoma (CTCL); mycosis fungoides \[MF\] and sezary syndrome \[SS\] subtypes) treated with mogamulizumab. OUTLINE: This is an observational study. Patients complete questionnaires, have photographs of their skin taken, and undergo blood sample collection and skin biopsies on study. Patients' medical records are also reviewed.

Interventions

OTHERNon-Interventional Study

Non-interventional study

Sponsors

City of Hope Medical Center
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* \* Adult patients (\>= 18 years of age) diagnosed with relapsed/refractory Mycosis Fungoides (MF) stage IB, IIA, IIB, III and IV or Sezary Syndrome(SS), and selected by their treating physician to receive single agent mogamulizumab (newly initiated) * Signed informed consent * Willing to undergo baseline biopsy and during treatment to evaluate for Mogamulizumab-Associated Rash (MAR) if clinically indicated * Willing to provide blood sample at baseline, and if applicable, at onset of Mogamulizumab-Associated Rash (MAR)

Exclusion criteria

* \* Other concomitant systemic and skin directed Cutaneous T-cell Lymphoma (CTCL) regimens except for topical steroids * Prior treatment with mogamulizumab

Design outcomes

Primary

MeasureTime frameDescription
Binary incidence of mogamulizumab-associated rash (MAR)Up to 3 yearsWill be estimated as a binomial proportion along with the 95% exact binomial confidence interval.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORChristiane Querfeld

City of Hope Medical Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 15, 2026