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Randomized Phase II selection trial of Stereotactic Prostate Irradiation with Dose Escalated Region

Randomized Phase II selection trial of Stereotactic Prostate Irradiation with Dose Escalated Region - SPIDER II trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000049304
Enrollment
60
Registered
2022-11-01
Start date
2022-11-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Prostate cancer

Interventions

focal dose escalation peripheral dose escalation

Sponsors

Kitasato univeristy
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: (1) Patients pathologically diagnosed with prostate cancer (adenocarcinoma) (2) Un-favorite intermediate-, high-, or very-high-risk patients according to the NCCN classification (3) Patients with PSA level (ng/ml) less than 100 (4) Patients aged between 20 and 90 on the date of informed consent (5) Performance status (PS) is an ECOG criterion for patients with a score of 0 to 1. (6) Patients who can detect lesions on T2-weighted or diffusion-weighted MRI (7) Written consent has been obtained

Exclusion criteria

Exclusion criteria: (1) Patients with active multiple cancers (excluding metachronous multiple cancers with an expected prognosis of 5 years or longer and synchronous multiple cancers with an expected prognosis of 5 years or longer with treatment) (2) Patients with uncontrolled diabetes (HbAlc 8.0% or more as a guideline) (3) Patients judged by the attending physician to have serious complications such as connective tissue disease, heart disease, respiratory disease, liver disease, etc. (4) Patients who are complicated by psychosis or psychiatric symptoms and are judged to be difficult to participate in the study (5) Patients who have previously received radiotherapy to the pelvis (6) Patients who have undergone surgical therapy for the prostate (transurethral prostatectomy, subcapsular prostatectomy, orchiectomy, etc.) or HIFU (high-intensity focused ultrasound) (7) Patients who received chemotherapy other than androgen deprivation therapy for prostate cancer (8) Patients with inflammatory bowel disease such as Crohn's disease or ulcerative colitis (9) Patients who are judged to be unable to comply with dose restrictions due to the proximity of risk organs such as the urethra and large intestine to the PTV estimated by diagnostic imaging. (10) Patients who are judged inappropriate for clinical trial participation by the attending physician

Design outcomes

Primary

MeasureTime frame
>=Grade 2 toxicity rates at 1 year after treatment

Countries

Japan

Contacts

Public ContactKoji Inaba

National cancer center hospital Department of radiation oncology

koinaba@ncc.go.jp03-3545-2511

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026