THERApy De-escalation for TESTicular Cancer
THERATEST is looking to collect data from 30 patients actively receiving de-escalation treatments or other standard of care treatments in two UK hospitals. THERATEST is a feasibility study to determine whether patients are willing to be recruited, the impact of de-escalation treatments on patients' cancers and quality of life, whether we should proceed with these treatments in a larger study, and if so how the study should be conducted. A feasibility study prepares the ground for a larger study and improves the chances of the subsequent study producing valuable evidence, and helps to avoid wasting precious resources on larger trials that are unlikely to be informative. We hope that information from THERATEST will bridge the current knowledge gap and allow clinicians to design bigger trials to actively compare the different treatment strategies.
∙ Each patient must meet all of the following inclusion criteria to be enrolled in the study:
• Willing and able to provide written informed consent.
• Male.
• Age ≥ 16 years.
• Histologically confirmed seminoma (biopsy/orchidectomy)
• Clinical stage II (standard of care cross-sectional imaging).
• Ability to comply with the protocol, including but not limited to, completion of the patient-reported outcome questionnaires.
∙ rRPLND cohort specific inclusion criteria
∙ Participants must meet the following additional inclusion criteria to register for the rRPLND cohort:
• Stage IIA and \<3cm IIB with unifocal ipsilateral lymph node within rRPLND template.
• Negative or mildly elevated serum tumour markers, defined as:
‣ AFP (alpha-fetoprotein) \<10ng/ml and non-rising on serial testing
⁃ BhCG (human chorionic gonadotropin) \<50mg/ml
⁃ LDH (lactate dehydrogenase) \<1.5x upper limit normal
• Fit for surgery, defined as meeting all of the following criteria:
‣ Body mass index (BMI) \<34
⁃ Charlson comorbidity index ≤3
⁃ ECOG Performance status 0-1
⁃ No significant cardio-pulmonary disease, or other uncontrolled intercurrent illness that would limit fitness for surgery in the opinion of the investigator
⁃ No previous open intra-abdominal surgery
∙ Carboplatin AUC10 cohort specific inclusion criteria
∙ Participants must meet the following additional inclusion criteria to register for the Carboplatin AUC10 group:
• Serum tumour markers, defined by IGCCCG good risk criteria:
‣ AFP \<10ng/ml
⁃ any BhCG
⁃ LDH \<2.5x ULN
• Glomerular filtration rate by EDTA clearance over 25 ml/min (a measured creatinine clearance using Cockcroft and Gault would be allowed if unable to perform EDTA clearance).
• ECOG Performance status 0-2.
• Patients must be sterile or agree to use adequate contraception during the period of therapy.