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Japanese

Aug. 09, 2023

July. 11, 2025

jRCTs051230084

Effect of cranberry juice on treatment-induced lower Urinary symptoms in patients with bladder cancer:
A randomized control trial
(SCRUB study)

SCRUB study (SCRUB study)

Miyake Makito

Nara Medical University Hospital

840 Shijo-cho, Kashihara, Nara

+81-744-22-3051

makitomiyake@naramed-u.ac.jp

Miyake Makito

Nara Medical University Hospital

840 Shijo-cho, Kashihara, Nara

+81-744-22-3051

makitomiyake@naramed-u.ac.jp

Recruiting

Aug. 09, 2023

Sept. 01, 2023
110

Interventional

randomized controlled trial

open(masking not used)

no treatment control/standard of care control

parallel assignment

other

1) Patients with bladder tumor who underwent the transurethral resection of bladder tumor within 10 days prior to the study registration
2) ECOG-performance status is 0 or 1
3) Age, between 20 and 80 years-old
4) The name and condition of the disease have been announced to the patient, and he / she must be given an explanation when participating in this study. The written consent at his / her will must be obtained with sufficient understanding.
5) Bone marrow function and organ functions are sufficient within 60 days prior to the study registration. For a case in whom multiple examination data are available, use most recent data before surgery.
- Hemoglobin: 9.0 g/dL or more
- White blood cell count: the lower limit to 12,000/mm3
- Neutrophil count: 1,500/mm3 or more
- Platelet count: 75,000/mm3 or more
- Total bilirubin: 2-fold of the upper limit of normal or less
- Aspartate aminotransferase (AST): 2-fold of the upper limit of normal or less and Alanine aminotransferase (ALT): 2-fold of the upper limit of normal or less
- Serum creatinine: 2-fold of the upper limit of normal or less

1) Patients with a habit of drinking alcohol, more than 20 gram per day.
2) Patients with uncontrolled diabetes, defined as HbA1c level > 8.0%.
3) Patients with a history of allergic reaction to any cranberry products.
4) Patients with a habit of taking any cranberry products three times per week of more.
5) Patients who prefers to taking any cranberry products perioperatively.
6) Patients with post-void residual volume > 100 mL or those who need to perform clean intermittent catherterization.
7) Patients with active urinary tract infection before the transurethral resection of bladder tumor.
8) Patients with severe lower urinary symptom, defined as International Prostate Symptom Score total score of 20 to 35.
9) Patients with severe symptomatic heart failure, defined as New York Heart Association (NYHA) Functional Classification III or IV.
10) Pregnant women, lactating women and patients who may be pregnant.
11) Patients who cannot understand the trial or take the medicine on his/her own initiative.
12) Inappropriate for the enrolment by the judgement of the principal investigator or the subinvestigators.

20age old over
80age old under

Both

Bladder Tumor; Bladder Cancer

Test group: 100% cranberry juice, 180 mL per day orally for 4 weeks (28 days)
Control group: Bottled water, 180 mL per day orally for 4 weeks (28 days)

Bladder; Benign Tumor; Urinary Neoplasm

100% cranberry juice or bottled water

D001749; D000093284 (ICD10 code: D414, C67)

The change of the IPSS scores at Day 28 after initiation of the intervention from the value prior to TURBT.

1) Postoperative change in questionnaires regarding lower urinary tract symptoms: the IPSS and overactive bladder symptom score (OSBSS), excluding the primary outcome
2) Postoperative change in questionnaires regarding health-related quality of life, evaluation with SF-8, EORTC QLQ-C30, and FACT-BL
3) Postoperative change in questionnaires regarding sleep quality: evaluation with Pittsburgh Sleep Quality Index
4) Postoperative change in questionnaires regarding Nocturia-Quality of Life: evaluation with N-QOL
5) Postoperative change in questionnaires regarding urinary tract pain scale: evaluation with Numeric Pain Rating Scale (NPRS) etc.
6) Postoperative change of urinary frequency: evaluation with frequency volume chart, total urinary frequency per day, urinary frequency during daytime, urinary frequency during nighttime, total urinary volume per day, urinary volume during daytime, urinary volume during nighttime, average voided volume, average voided volume during daytime, average voided volume during nighttime
7) Post-void residual volume

Safety outcomes (8 to 10)
8) Rate of adverse events (evaluation with Common Terminology Criteria for Adverse Events ver 5.0)
9) Change of blood tests
10) Change of urianalysis

Expiratory outcomes (11 to 13)
11) Supportive care with medicines such as pain reliever during the intervention
12) Urine concentration of hippuric acid at Day 0 and Day 28
13) Content of quinic acid and proanthocyanidin in 100% cranberry juice

MARUKAI CORPORATION
Not applicable
Certified Review Board of Nara Medical University
840 Shijo-cho, Kashihara, Nara

+81-744-29-8835

ethics_nara@naramed-u.ac.jp
Approval

Aug. 02, 2023

No

none

History of Changes

No Publication date
3 July. 11, 2025 (this page) Changes
2 Sept. 13, 2023 Detail Changes
1 Aug. 09, 2023 Detail