Adjuvant Bleomycin, Etoposide and Cisplatin (BEP) Versus Carboplatin in Stage I Seminomatous Testicular Cancer (SWENOTECA-ABC)

  • STATUS
    Recruiting
  • End date
    Dec 8, 2035
  • participants needed
    348
  • sponsor
    St. Olavs Hospital
Updated on 8 July 2022
etoposide
neutrophil count
carboplatin
orchiectomy
cancer chemotherapy
bleomycin
alpha fetoprotein
seminoma

Summary

One course of adjuvant carboplatin AUC7 is considered internationally to be a standard treatment option in clinical stage I seminoma, regardless of risk factors. Treatment is based on a large, randomized phase III study comparing adjuvant carboplatin with adjuvant radiotherapy. This study was done without registering data on possible risk factor for relapse. The relapse rate following carboplatin was in this study estimated to be 5.3 %. Data from a prospective, risk-adapted Spanish study showed that patients without risk factors had a very low risk of relapse, even without adjuvant treatment. This result is also confirmed by a recent analysis of SWENOTECA VII data, showing that this group of patients has a risk of relapse of less than 5 % without adjuvant treatment.

Combined data from SWENOTECA V and VII studies indicate a high risk of relapse in patients with one or two risk factors (tumor 4 cm, stromal invasion of rete testis) treated with one course of adjuvant carboplatin. The relapse rate in this group of patients was 9.4 %, indicating a very modest effect of one course of adjuvant carboplatin. If adjuvant chemotherapy is the preferred treatment strategy, more potent chemotherapy regimens should be explored in this patient group. The results from SWENOTECA III/VI studies with one course of cisplatin-based adjuvant chemotherapy in clinical stage I nonseminoma, show a very low rate of relapse. As seminoma is even more chemosensitive than nonseminoma the relapse rate following one course of adjuvant BEP is expected to be very low, close to 1 %.

The overall aim is to investigate whether one course of adjuvant BEP have a lower relapse rate than one course of adjuvant carboplatin AUC7. In addition, it will be investigated if there is a difference in health related quality of life as well as acute and long-term toxicities from treatment.

Description

Short term overall survival is, regardless of treatment allocation, expected to be very close to 100 %. The primary outcome is relapse rate. The power of the study depends on the number of observed relapses. If the relapse rate in the adjuvant carboplatin group, the reference group, is lower than the anticipated 9 %, we need to include more patients to the study. Based on all previous published material on adjuvant treatment in clinical stage I seminoma it is not possible to precisely estimate the correct relapse rate until the median follow-up is four years. Consequently, we will estimate the relapse rate in the reference group close to the end of accrual. If the estimated relapse rate, and thus the number of relapses, is lower than the anticipated we will increase the sample size to make sure that the study meets the minimum required number of relapses in the reference group. A possible inclusion of more study participants does not compromise the Type I error rate of the study.

Details
Condition Testicular Neoplasms, Seminoma
Treatment carboplatin, Bleomycin Etoposide and Cisplatin
Clinical Study IdentifierNCT02341989
SponsorSt. Olavs Hospital
Last Modified on8 July 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Histological diagnosis of unilateral seminoma testicular cancer, evaluating both size of tumor and invasion of the rete testis
Clinical stage I
Tumor size over 4 cm and/or stromal invasion of the rete testis by tumor cells
Normal value of alpha-fetoprotein (AFP) before orchiectomy. A stable, slightly elevated AFP as a normal value may be permitted
Age ≥ 18 years and < 60 years
Adequate organ function defined as
Serum aspartate transaminase (ALT) ≤ 1.5 x upper limit of normal (ULN). Total serum
bilirubin ≤ 1.5 x ULN Absolute neutrophil count (ANC) ≥ 1.5 x 109/L Platelets ≥ 100 x 109/L
Creatinine clearance > 50 ml/min (eGFR) All fertile patients should use safe contraception
Written informed consent

Exclusion Criteria

Signs of metastatic disease evaluated by CT thorax, abdomen and pelvis. Patients in
Prior diagnosis of testicular cancer
need of restaging (see SWENOTECA IX) should not be included
Cancer other than seminoma testicular cancer
Chronic pulmonary disorders giving a high risk of bleomycin induced toxicity (for
example chronic obstructive pulmonary disease or lung fibrosis)
Known hypersensitivity or contraindications for the study drugs
Serious concomitant systemic disorders (for example active infection, unstable
cardiovascular disease) that in the opinion of the investigator would compromise the
patient's ability to complete the study or interfere with the evaluation of the
efficacy and safety of the study treatment
Medical, social, psychological conditions that could prevent adequate information and
follow-up
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