Natural History Study of Kaposi Sarcoma

May 29, 2026 updated by: National Cancer Institute (NCI)

Background:

Kaposi sarcoma (KS) is a type of tumor caused by the Kaposi sarcoma herpesvirus. KS usually affects the skin, but lesions can also appear in the lymph nodes, lungs and digestive tract. KS is most common in people with compromised immunity, but it also appears in otherwise healthy people. Researchers want to understand more about how KS develops, why it may recur, and how it affects the immune system and organs.

Objective:

To learn more about the natural history of KS.

Eligibility:

People aged 18 years and older with KS.

Design:

Participants will be screened. They will have a physical exam with blood tests. They will have an imaging scan. They may need a new biopsy: Tissue samples may be cut from their tumor. Their ability to perform normal activities will be assessed.

Participants will visit the clinic to have their KS evaluated. In addition to the imaging scans and other tests performed during screening, procedures may include:

Eye exam.

Ultrasound exam of the heart (electrocardiogram).

Collection of saliva and urine samples.

Biopsies of the skin or lymph nodes.

Swabs of the anus and cervix.

Photographs of skin lesions.

Removal of fluid samples from the space around the lungs, intestine, or heart.

The evaluation visit will be repeated 5 more times over 18 months and then yearly for up to 10 years.

Participants will follow their standard treatment for KS during the study.

Study Overview

Status

Recruiting

Conditions

Detailed Description

Background:

  • Kaposi sarcoma (KS) is a multicentric angioproliferative tumor caused by Kaposi sarcoma herpesvirus (KSHV) that most frequently involves skin, but can also involve lymph nodes, lungs, and gastrointestinal tract. It is most common in people with human immunodeficiency virus (HIV) or other forms of immune compromise.
  • Patients with HIV-associated KS have worse survival than HIV-infected patients without KS.
  • KS can occur alone or with other KSHV-associated disorders such as multicentric Castleman disease (MCD), primary effusion lymphoma (PEL), or KSHV-associated inflammatory cytokine syndrome (KICS).
  • The natural history of KS is incompletely understood as it occurs in different epidemiologic subtypes (including those with HIV, particularly among individuals with well-controlled HIV and robust CD4 T cell counts, and those who are HIV-negative).
  • The longitudinal evaluations along with tissue sample collection, imaging studies, and participant reported outcomes will allow for the development of a better understanding of the natural history of this disease, and the development of the basis for more effective treatments.

Objective:

-To characterize the natural history of KS, including presentation, manifestation, and proportion of participants with KS with remission and recurrence by epidemiologic subtype

Eligibility:

  • Participants with histologically confirmed KS
  • Age >=18 years
  • No active KICS or MCD

Design:

  • This will be a long-term trial to comprehensively study participants with KS.
  • Medical history including HIV characteristics, research specimens such as KS tissue, blood and saliva will be obtained through the course of KS management with specific attention to patterns related to disease recurrence and progression, response to therapies, and duration of response.
  • Outcomes and factors that influence the onset and persistence of KS over the natural history of this condition will be explored in collaboration with other centers that treat participants with KS.
  • We anticipate accruing 230 participants on this protocol.

Study Type

Observational

Enrollment (Estimated)

150

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Maryland
      • Bethesda, Maryland, United States, 20892
        • Recruiting
        • National Institutes of Health Clinical Center
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

People with Kaposi sarcoma

Description

  • INCLUSION CRITERIA:

Participants must have histological KS confirmed by the Laboratory of Pathology (LP), NCI.

  • KS as assessed by cutaneous or oral KS lesions or other assessable KS disease.
  • Age >=18 years.
  • ECOG performance status <=4.
  • Ability of participant to understand and the willingness to sign a written informed consent document.

EXCLUSION CRITERIA:

  • Participants with active KSHV-associated inflammatory cytokine syndrome (KICS), multicentric Castleman disease (MCD), or primary effusion lymphoma (PEL).
  • Participants with serious and/or uncontrolled severe intercurrent illness, such as opportunistic infections, that in the judgement of the investigator would preclude participation in the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Cohort 1
Participants with Kaposi sarcoma

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
To characterize the natural history of Kaposi sarcoma (KS), including presentation, manifestation, and proportion of participants with KS with remission and recurrence by epidemiologic subtype
Time Frame: 10 years
Assessment of the proportion of participants with KS by epidemiologic subtype who experience remission and recurrent KS over the course of the disease
10 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
To evaluate the emergence of KSHV-associated inflammatory syndromes in the natural history of KS
Time Frame: 10 years
Evaluate the proportion of participants with the emergence of KICS, MCD and/or PEL during the course of the natural history evaluation. Evaluation of parameters of CBC, acute, hepatic, mineral panels and CRP may provide predictive markers for the emergence of these conditions.
10 years
To evaluate differences in rates of KS recurrence by human immunodeficiency virus (HIV) status and CD4 T cell count
Time Frame: 10 years
Assess the proportion of recurrence by HIV status and by CD4 T cell count.
10 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Ramya M Ramaswami, M.D., National Cancer Institute (NCI)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 15, 2024

Primary Completion (Estimated)

December 31, 2034

Study Completion (Estimated)

December 31, 2036

Study Registration Dates

First Submitted

April 18, 2024

First Submitted That Met QC Criteria

April 18, 2024

First Posted (Actual)

April 19, 2024

Study Record Updates

Last Update Posted (Actual)

June 1, 2026

Last Update Submitted That Met QC Criteria

May 29, 2026

Last Verified

May 28, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

This study will comply with the NIH Data Management and Sharing (DMS) Policy, which applies to all new and ongoing NIH-funded research in the IRP, as of January 25, 2023, that is associated with a ZIA, with a clinical protocol that undergoes scientific review.

IPD Sharing Time Frame

Clinical data available during the study and indefinitely.

IPD Sharing Access Criteria

Clinical data will be made available via subscription to BTRIS and with the permission of the study PI.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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