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Retroperitoneal Lymph Node Dissection in Treating Patients With Testicular Seminoma

Surgery in Early Metastatic Seminoma (SEMS): Phase II Trial of Retroperitoneal Lymph Node Dissection as First-Line Treatment for Testicular Seminoma With Isolated Retroperitoneal Disease (1-3cm)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02537548
Enrollment
55
Registered
2015-09-01
Start date
2015-08-28
Completion date
2027-12-31
Last updated
2026-06-09

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

Conditions

Lymphadenopathy, Stage II Testicular Seminoma, Stage I Testicular Seminoma

Brief summary

This phase II trial studies how well retroperitoneal lymph node dissection (RPLND) works in treating patients with stage I-IIa testicular seminoma. The retroperitoneum is the space in the body behind the intestines that is typically the first place that seminoma spreads. RPLND is a surgery that removes lymph nodes in this area to treat testicular seminoma and may experience fewer long-term toxicities, such as a second cancer, cardiovascular disease, metabolic syndrome (pre-diabetes), or lung disease.

Detailed description

PRIMARY OBJECTIVES: I. Assess the recurrence free survival (RFS) at 2 years after RPLND when RPLND is used as a first line treatment for patients with testicular seminoma and low volume (=\< 2cm) retroperitoneal disease. SECONDARY OBJECTIVES: I. Estimate the percent of patients, after treatment with RPLND, who can avoid external beam radiotherapy (XRT) or systemic chemotherapy (CTX) for seminoma. II. Assess the complications associated with primary RPLND for seminoma. OUTLINE: Patients undergo RPLND. After completion of study treatment, patients are followed up at 1 month, every 4 months for 1 year, every 6 months for 2 years, and then annually thereafter.

Interventions

OTHERLaboratory Biomarker Analysis

Correlative studies

Sponsors

University of Southern California
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
16 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Pure seminoma after orchiectomy presenting with isolated retropreritoneal lymphadenopathy OR stage I pure seminoma with isolated retroperitoneal relapse. Relapse should be within 3 years * Lymphadenopathy in the retroperitoneum: at least one lymph node 1-3 cm in greatest dimension, no lymph node \> 3 cm in greatest dimension, no more than 2 lymph nodes 1-3 cm in greatest dimension * Axial imaging of lymphadenopathy within 6 weeks of the date of RPLND * Retroperitoneal lymphadenopathy must be within the RPLND template * If there is borderline lymphadenopathy, defined as the largest retroperitoneal lymph node measuring 0.90 - 0.99 cm in the greatest dimension, an abdominal computed tomography (CT) scan should be repeated (recommend interval of 6 - 8 weeks); the same lymph node must demonstrate growth to \>= 1.0 cm in the greatest dimension * Biopsy is not required, though if biopsy of the retroperitoneal node(s) was obtained, pathology must be consistent with pure seminoma * Chest imaging (x-ray, CT or magnetic resonance imaging \[MRI\]) negative for metastasis no more than 6 weeks prior to the date of RPLND * Primary tumor excised by radical inguinal orchiectomy and pathology consistent with pure seminoma * Serum alpha fetoprotein (AFP) not more than 1.5 times upper limit of normal, beta-human chorionic gonadotropin (HCG), lactate dehydrogenase (LDH) (per the local laboratory assay) within 14 days of RPLND * Eastern Cooperative Oncology Group (ECOG) performance status =\< 1 * Ability to understand and the willingness to sign a written informed consent * Serum coagulation studies (INR/PTT) and platelet counts suitable for surgery per surgeon discretion.

Exclusion criteria

* Second primary malignancy * History of receiving chemotherapy or radiotherapy * Patients receiving any other investigational agent (s) * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements

Design outcomes

Primary

MeasureTime frameDescription
RFSFrom RPLND to the time of recurrence or death, whichever comes first., assessed at 2 years after RPLNDAssociated 95% confidence intervals will be constructed. Actuarial RFS will be calculated by the Kaplan Meier method. The recurrence location (pelvic, retroperitoneal, distant) will be calculated as a percentage of total recurrences to describe the clinical pattern of disease after relapse.

Secondary

MeasureTime frameDescription
Long-term RPLND complication ratesUp to 5 yearsThe rate of short and long term complications will be calculated.
RFSFrom RPLND to the time of recurrence or death, whichever comes first., assessed at 5 years after RPLNDAssociated 95% confidence intervals will be constructed. Actuarial RFS will be calculated by the Kaplan Meier method.
Short-term RPLND complication ratesUp to 12 monthsThe rate of short and long term complications will be calculated.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORSiamak Daneshmand

University of Southern California

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 10, 2026