Rare cancer syndrome under the microscope: what families need to know
NCT ID NCT01247597
First seen Jun 27, 2026 · Last updated Sep 17, 2026 · Updated 12 times
Summary
This study follows people with a rare genetic condition called DICER1 syndrome, which raises the risk of certain childhood cancers like pleuropulmonary blastoma. Researchers will collect medical histories, genetic samples, and tissue from up to 1,500 participants and their relatives. The goal is to better understand the condition, improve cancer screening, and develop guidelines for prevention and care.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could lead to better screening and management guidelines for families at risk of DICER1-related cancers.
- What could go wrong
- This is an observational study, not a treatment trial, so it won't directly help participants. It may take years to gather enough data to change clinical practice.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 1,500 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2011
- Lead sponsor
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A government research agency
The lead sponsor is the US National Institutes of Health.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
A cohort of patients with PPB and/or specific neoplasms of the PPB spectrum (cystic nephroma, nasal chondromesenchymal hamartoma, ovarian Sertoli-Leydig cell and other sex cord-stromal tumors, ocular medulloepithelioma, Wilms tumor, embryonal rhabdomyosarcoma, pineoblastoma, others to be defined)
- Ages
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1 month to 99 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
* INCLUSION CRITERIA: All participants who meet the eligibility criteria outlined below will be eligible for inclusion in this study regardless of their race, gender, ethnicity, or age. * Affected individual is defined as: * an individual with histologically-confirmed PPB and/or other DICER1-related tumors * an individual with a known or suspected DICER1 disease-associated variant * an individual from the general population with one or more of the unique tumors of the types associated with DICER1 including (but not exclusively), PPB, cystic nephroma, ovarian Sertoli-Leydig cell and other sex cord-stromal tumors, ocular medulloepithelioma, nasal chondromesenchymal hamartoma, Wilms tumor, embryonal rhabdomyosarcoma, pineoblastoma, pituitary blastoma, ovarian sarcoma, CNS sarcoma and/or thyroid cancer - regardless of their family history. Additional DICER1-related neoplasms may be identified in the future, and they will be added to the protocol as needed. * Unaffected individual is defined as: * a family member (such as parents, siblings, children, or extended family) of an affected participant without a known or suspected DICER1 disease-associated variant or condition and they will be controls. Other inclusion criteria include: * All types and amounts of prior therapies are allowed. * There is no age restriction. * There is no restriction related to organ and marrow function. * Ability of the individual or their legal guardian or appropriate surrogate to understand, and their willingness to provide informed consent. Neonates of affected individuals will be included in the Field Cohort and be eligible for genetic counseling, education, and testing, if indicated and consented by a parent/legal guardian/LAR. This is entirely a function of meeting the inclusion criteria and not being excluded by the exclusion criteria. In some instances, patients with histologically-confirmed PPB and/or another neoplasm within the DICER1-related tumor risk and their families will be referred to the Clinical Genetics Branch (CGB) by the International Pleuropulmonary Blastoma (PPB) / DICER1 Registry (IPPBR), provided that the family has previously or currently indicated a desire to be notified of such research opportunities. In non IPPBR-cases, the diagnosis will be confirmed by reviewing relevant medical records and relevant surgical pathology material. EXCLUSION CRITERIA: Individuals and families referred for evaluation in whom reported diagnoses are not verifiable.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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National Cancer Institute - Shady Grove
RECRUITINGRockville, Maryland, 20850, United States
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National Institutes of Health Clinical Center
RECRUITINGBethesda, Maryland, 20892, United States
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