Genito-Urinary Neoplasm Clinical Trial
Official title:
A Single Cohort Study to Characterize Differences in Microbial Diversity Between Inflamed and Non-Inflamed Skin of Patients With Immune Checkpoint Inhibitor-Induced Dermatitis
| Verified date | February 2023 |
| Source | City of Hope Medical Center |
| Contact | n/a |
| Is FDA regulated | No |
| Health authority | |
| Study type | Interventional |
This study determines microbial diversity between inflamed and non-inflamed skin of patients with immune checkpoint inhibitor-induced dermatitis. Skin has millions of bacteria. When treated with an immunotherapy agent, skin issues like a rash are common, occurring in up to 45% of patients. This study finds out if the type of bacteria on skin is different between the affected and unaffected skin in patients who have this treatment-related rash and also compares the immune cells found in the skin tissue to those seen in the blood.
| Status | Completed |
| Enrollment | 2 |
| Est. completion date | October 8, 2021 |
| Est. primary completion date | October 8, 2021 |
| Accepts healthy volunteers | No |
| Gender | All |
| Age group | 18 Years and older |
| Eligibility | Inclusion Criteria: - Patients receiving treatment with any of the Food and Drug Administration (FDA) approved monoclonal antibodies that block CTLA-4, PD-1, PD-L1, or any combination thereof - Patients recommended to undergo skin biopsy due to a clinical diagnosis of ICI-induced dermatitis as part of routine and standard clinical care are eligible - Patients must be age 18 or older - Eastern Cooperative Oncology Group (ECOG) performance status < 2 - Measurable disease as per RECIST 1.1 - Patients must be able to personally sign and date informed consent indicating that the patient has been informed of all pertinent aspects of the study are eligible Exclusion Criteria: - Patients taking antibiotics or who plan to begin taking antibiotics - Use of topical or systemic steroids within the past 14 days. Inhaled steroids are permitted - Known medical condition (e.g. a disease associated with chronic skin inflammation such as atopic dermatitis or psoriasis) that, in the investigator's opinion, would increase the risk associated with study participation or interfere with the interpretation of results - Not recovered to non-dermatologic =< grade 1 toxicities related to any prior therapy - Pregnant woman will not be enrolled in this study. It is a regulatory requirement that for studies that carry no prospect of benefit to the woman, the research can only enroll pregnant women if the resulting knowledge cannot be obtained by any other means. In this study, there is no prospect of direct benefit to the pregnant women - Patients with human immunodeficiency virus (HIV), hepatitis B, or C will be excluded from this study - Any other condition that would, in the Investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns or compliance with clinical study procedures (including compliance issues related to feasibility/logistics) |
| Country | Name | City | State |
|---|---|---|---|
| United States | City of Hope Medical Center | Duarte | California |
| Lead Sponsor | Collaborator |
|---|---|
| City of Hope Medical Center | National Cancer Institute (NCI) |
United States,
| Type | Measure | Description | Time frame | Safety issue |
|---|---|---|---|---|
| Other | Skin microbial diversity | Will be associated with response to therapy. The non-flamed skin of responders versus non-responders will be compared against change in Shannon Index. Both parametric and non-parametric tests will be performed on the data as well as its log-transformation. | Up to 1 year | |
| Other | Abundances of certain skin bacteria in lesion | Will be associated with a higher rate of dermatologic toxicity with ICI. Similar to the evaluation of microbial diversity, will evaluate the concentrations of specific bacteria of inflamed as compared to non-inflamed skin of a similar phenotype (e.g. sebaceous, moist, or dry). This will entail both an individual bacteria abundance evaluation and clustering analysis. | Up to 1 year | |
| Other | Specific skin bacteria | Will be associated with higher response to ICI. Will evaluate specific bacteriomic differences between the responders and non-responders via individual bacteria abundance assessment and clustering analysis. Response will be defined by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 and assessed at the time of each skin biopsy. This will entail both an individual bacteria abundance evaluation and clustering analysis. | Up to 1 year | |
| Other | Tissue and peripheral immune cell phenotypes of ICI-induced dermatitis (I) | Will use immunohistochemistry to aid in characterizing the dermatologic microenvironment as follows:
will use immunohistochemistry to aid in characterizing the dermatologic microenvironment. The Human Cytokine 30-plex protein assay (Invitrogen) will be used to characterize the plasma levels of cytokines in pg/mL. |
Up to 1 year | |
| Other | Tissue and peripheral immune cell phenotypes of ICI-induced dermatitis (II) | Will use immunohistochemistry to aid in characterizing the dermatologic microenvironment as follows:
will use immunohistochemistry to aid in characterizing the dermatologic microenvironment. Fluorochrome-labeled antibodies will be used to characterize the number of myeloid cells. |
Up to 1 year | |
| Other | Tissue and peripheral immune cell phenotypes of ICI-induced dermatitis (III) | Will use immunohistochemistry to aid in characterizing the dermatologic microenvironment as follows:
will use immunohistochemistry to aid in characterizing the dermatologic microenvironment. EasySep PE-selection kit will be used to characterize the number of T cells. |
Up to 1 year | |
| Primary | Association between skin microbial diversity and immune checkpoint inhibitor (ICI)-induced dermatitis | Microbial diversity will be estimated by the Shannon Index. | Up to 1 year |