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Spots Global Cancer Trial Database for Early Prostate Cancer Recurrence With PSMA PET Positive Unilateral Pelvic Lesion(s)

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Trial Identification

Brief Title: Early Prostate Cancer Recurrence With PSMA PET Positive Unilateral Pelvic Lesion(s)

Official Title: Early Prostate Cancer Recurrence With PSMA PET Positive Unilateral Pelvic Lesion(s): is One-sided Salvage Extended Lymph Node Dissection Enough

Study ID: NCT04271579

Conditions

Prostate Cancer

Study Description

Brief Summary: Significant advances in molecular nuclear medicine imaging in prostate cancer have been achieved in recent years. In particular, the introduction of prostate-specific membrane antigen (PSMA) -based tracers has significantly influenced diagnostic imaging of prostate. If cancer recurs after surgical removal of the prostate, targeted PSMA PET (positron emission tomography) can detect metastases even at very low PSA (prostate-specific Antigen) values. This increasingly allows individualized specific therapy of patients with prostate cancer recurrence. PSMA PET has now been included in national and international guidelines for the diagnosis of patients with biochemical recurrence of prostate cancer. Especially in patients in good general condition, with potentially longer life expectancy and early localized PSA recurrence, advances in molecular imaging are increasingly turning local therapy concepts into focus. Here both, radiotherapeutic (salvage radiotherapy of the lymphatic drainage) and surgical interventions (salvage lymph node dissection = removal of the pelvic lymph nodes) are offered on an individual basis. These regional therapies mainly aim to achieve a delay of further progression of the prostate cancer disease, and thus delay the initiation of palliative, sustained drug therapy. Previous standard or common practice at salvage lymph node dissection is the removal on both sides of the pelvic lymph nodes even if only one-sided suspicious lymph nodes are detected on imaging. Although the complications of salvage lymph node dissection are usually minor and manageable, they can still lead to impaired lymphatic drainage, leg edema, lymphocele formation or other surgical complications. The aim of the present study is to investigate whether a unilateral pelvic lymph node dissection on the side of conspicuous PSMA PET is sufficient and a dissection on the contralateral side can be dispensed without negatively impacting oncological outcomes and thereby sparing the patient the potential additional complications of a bilateral pelvic lymph node dissection.

Detailed Description: In this prospective randomized study, patients with early biochemical recurrence after radical prostatectomy and with PSMA-PET positive unilateral pelvic metastatic lesions are assessed as to whether unilateral and bilateral salvage lymph node dissection are oncologically equivalent. For this, the following endpoints will be evaluated: * complete biochemical response (cBR: PSA \<0.2ng /ml) after salvage lymph node dissection * biochemical freedom from recurrence without further prostate-cancer-specific therapy (time from salvage lymph node dissection to first PSA value\> 0.2ng / ml) * prostate cancer-specific therapy-free time (time from salvage lymph node dissection to initiation of prostate cancer specific therapy) In addition, the diagnostic accuracy of the preoperative PSMA PET, which led to the indication of salvage lymph node dissection, is to be investigated in the context of the study and the standardized one- or two-sided template lymph node dissection. Furthermore, it should be investigated whether there is a reduction of surgery-associated side effects in patients undergoing unilateral salvage lymph node dissection. In addition, quality of life and psychological stress of patients is systematically recorded by means of validated questionnaires. Since salvage lymph node dissection may also be carried out with the help of currently experimental preoperative labeling with PSMA ligands for easier intraoperative localization (PSMA radioguided surgery), a comparison of conventional salvage surgery and the PSMA radioguided surgery is also planned. However, if applied to patients, PSMA radioguided surgery is performed outside of the study protocol and is explicitly not part of the study protocol. In case there is no complete biochemical response (cBR, PSA \<0.2ng / ml) or, after reaching cBR, a further increase in PSA above 0.2ng / ml threshold is observed after salvage lymph node dissection, an attempt should be made to localize recurrence disease using PSMA PET. This should provide indirect information as to whether re-irradiation following salvage lymph node dissection could be a useful approach and should be investigated in future studies. However, PSMA PET is recommended in the study, but is optional and therefore to be performed outside of the study protocol.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: MALE

Healthy Volunteers: No

Locations

Martini-Klinik am UKE GmbH, Hamburg, , Germany

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

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