An observational study in Pleuropulmonary Blastoma, Sertoli-Leydig Cell Tumor and DICER1 Syndrome, sponsored by Children's Hospitals and Clinics of Minnesota. Recruiting at 1 site in United States. Open to participants aged 0 Minutes to 100 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-01-30.
Sponsored by Children's Hospitals and Clinics of Minnesota · Observational
Pleuropulmonary blastoma (PPB) is a rare malignant neoplasm of the lung presenting in early childhood. Type I PPB is a purely cystic lesion, Type II is a partially cystic, partially solid tumor, Type III is a completely solid tumor. Treatment of children with PPB is at the discretion of the treating institution. This study builds off of the 2009 study and will also seek to enroll individuals with DICER1-associated conditions, some of whom may present only with the DICER1 gene mutation, which will help the Registry understand how these tumors and conditions develop, their clinical course and the most effective treatments.
PPB is a rare cancer of the lung presenting in early childhood, mostly commonly from birth to age \~72 months. PPB occurs within the lung or between the lung and the chest wall. There are three primary forms of PPB called Types I, II, and III PPB. PPB is related to an underlying change/mutation in a gene called DICER1 which impacts gene expression and cell growth. DICER1 mutations may also lead to the development of other tumors in children and adults.
The International PPB/DICER1 Registry offers information based on previous data from Registry participants and the medical literature and collaborative efforts with international rare tumor groups.
Retrospective and real-time central pathology review is encouraged. Therapy decisions remain at the discretion of the treating institution.
Children with Type I PPB require surgery and sometimes chemotherapy. Therapy decisions are the responsibility of the treating institution. Surgical guidelines are presented. It is unknown whether adjuvant chemotherapy improves cure rates for Type I PPB patients. Chemotherapy options include a 22-week regimen: 4 courses of vincristine, actinomycin D and cyclophosphamide (VAC) followed by 3 courses of vincristine and actinomycin D (VA).
Children with Types II and III PPB, require surgery, chemotherapy and sometimes radiation therapy. Many children with Types II or III PPB receive a single-arm multi-agent chemotherapy neo-adjuvant/adjuvant regimen of IVADo (ifosfamide, vincristine, actinomycin, doxorubicin) for 36 weeks. Second and possible 3rd look surgery may be considered for local control. Radiation therapy may be considered.
Exclusion criteria:
Absence of appropriate consent for Registry participation
Type I PPB is an early manifestation of this malignant disease, cured in some cases by surgery. Surgical guidelines are presented. It is unknown whether adjuvant chemotherapy improves cure rates for individuals with Type I PPB. If the treating physicians select adjuvant chemotherapy treatment, chemotherapy options include a 22-week regimen: 4 courses of vincristine, actinomycin D and cyclophosphamide (VAC) followed by 3 courses of vincristine and actinomycin D (VA). Therapy decisions are the responsibility of the treating institution.
Types II and III PPB are aggressive sarcomas. Surgery and chemotherapy are necessary in all cases. Surgical guidelines are presented. Many children with Types II or III PPB receive a single-arm multi-agent chemotherapy neo-adjuvant/adjuvant regimen of IVADo (ifosfamide, vincristine, actinomycin, doxorubicin) for 36 weeks. Second and possible 3rd look surgery may be considered for local control. Radiation therapy may be considered. Specific therapy decisions are the responsibility of the treating institution.
Type Ir (regressed) PPB is a unique, purely cystic tumor which lacks a primitive cell component. The International PPB/DICER1 Registry will enroll and follow participants with Type Ir PPB, regardless of age.
PPB and the associated conditions found in PPB families suggest a familial tendency to formation of tumors. The International PPB/DICER1 Registry for PPB, DICER1 and Associated Conditions study will enroll and follow participants who have the DICER1 gene mutations or conditions associated with PPB or DICER1.
Event-free survival
The primary endpoint for statistical analysis will be time from start treatment to an event, defined as the occurrence of progression or recurrence of PPB, occurrence of a second malignant neoplasm, or death from any cause that is at least possibly related to the original disease or treatment.
Time frame: 7 years
Overall response to chemotherapy
The investigators will assess overall response to chemotherapy among participants with radiographically measurable tumor following initial surgery or biopsy.
Time frame: 7 years
Overall survival
The investigators will assess overall survival and time to death from any cause among participants.
Time frame: 7 years
Quality of life outcomes in individuals diagnosed with PPB.
Chemotherapy and surgery may have adverse effects on the quality of life outcomes. Multiple factors may impact quality of life for participants.This study will allow the investigators to assess the quality of life outcomes in participants with DICER1-related tumors and will compare outcomes to those with more common childhood cancers.
Time frame: 7 years
Cardiac outcomes in individuals diagnosed with PPB.
Chemotherapy and surgery may have adverse effects on cardiac outcomes. This study will allow the investigators to assess the cardiac outcomes as measured by ejection fraction and shortening fraction via echocardiogram of participants with DICER1-related tumors, and compare outcomes to those with more common childhood cancers.
Time frame: 7 years
Pulmonary function testing results in individuals diagnosed with PPB
Chemotherapy and surgery may have adverse effects on pulmonary outcomes. This study will allow the investigators to assess the pulmonary outcome of participants as ascertained by pulmonary function testing (forced vital capacity (FVC), FEV1(forced expiratory volume in 1 second)/FVC) with DICER1-related tumors, and compare outcomes to those with more common childhood cancers.
Time frame: 7 years
Incidence of neoplasms in individuals with DICER1-related conditions or germline DICER1 variants. mutation.
This protocol will include individuals with germline DICER1 mutations and will calculate incidence rates of specific neoplasms in this population
Time frame: 7 years
Plan to share: No
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Children's Hospitals and Clinics of Minnesota