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Note: This record shows only 22 elements of the WHO Trial Registration Data Set. To view changes that have been made to the source record, or for additional information about this trial, click on the URL below to go to the source record in the primary register.
Register: REBEC
Last refreshed on: 29 May 2023
Main ID:  RBR-4dkhh3
Date of registration: 29/01/2018
Prospective Registration: No
Primary sponsor: Universidade Federal de São Paulo
Public title: Initial prostate biopsy: 12 versus 20 cores - prospective study
Scientific title: 20 core transrectal prostate biopsy is the initial approach of choice in a selected group of patients with suspected prostate adenocarcinoma
Date of first enrolment: 01/07/2014
Target sample size:
Recruitment status: Data analysis completed
URL:  http://ensaiosclinicos.gov.br/rg/RBR-4dkhh3
Study type:  Intervention
Study design:  An open randomized non-controlled diagnostic trial, parallel, with two arms.  
Phase:  N/A
Countries of recruitment
Brazil
Contacts
Name: Raphael    Sandes Solha
Address:  Rua Napoleão de Barros, 800 - Vila Clementino 5576-4848 04024-002 São Paulo Brazil
Telephone: +55-11-55764848
Email: r_solha@hotmail.com
Affiliation:  Universidade Federal de São Paulo
Name: Raphael    Sandes Solha
Address:  Rua Napoleão de Barros, 800 - Vila Clementino 5576-4848 04024-002 São Paulo Brazil
Telephone: +55-11-55764848
Email: r_solha@hotmail.com
Affiliation:  Universidade Federal de São Paulo
Key inclusion & exclusion criteria
Inclusion criteria: Patients referred for a prostate biopsy with suspected prostate cancer: positive
digital rectal exam findings and/or elevated serum prostatic-specific antigen levels.

Exclusion criteria: Previous prostate biopsy and/or prostatic-specific antigen greater than 20 ng/ml

Age minimum:
Age maximum:
Gender: M
Health Condition(s) or Problem(s) studied
Malignant neoplasm of prostate
Intervention(s)
Procedure/surgery
E01.370.225.500.384.100.370
Twelve core group (105 participants): transrectal ultrasound guided prostate biopsy, after troncular bilateral anesthesia with 10 ml of 1% lidocaine, using a 7.5 Hz probe, an 18-gauge trucut needle, and a spring-loaded biopsy gun.
Dividing the prostate in apex, middle, and base, right and left side, one paramedian core and one lateral core of each segment was sampled.

Twenty core group (91 participants): transrectal ultrasound guided prostate biopsy, after troncular bilateral anesthesia with 10 ml of 1% lidocaine, using a 7.5 Hz probe, an 18-gauge trucut needle, and a spring-loaded biopsy gun.
Dividing the prostate in apex, middle, and base, right and left side, one paramedian core and one lateral core of each segment was sampled and two additional cores were obtained from the prostate middle and base segments on each side.
Z12.5
Primary Outcome(s)
Higher prostate cancer detection rate using a 20-core biopsy protocol than the standard 12-core biopsy protocol, based on the histological analysis of cores.
Secondary Outcome(s)
Higher clinically insignificant prostate cancer detection rate using a 20-core biopsy protocol than the standard 12-core biopsy protocol, based on the histological analysis of cores.
Clinically insignificant cancers: maximum of three positive cores, greatest percentage of cancer of 50% of core length, and Gleason score of 6 or less.
Higher prostate cancer detection rate using a 20-core biopsy protocol than de standard 12-core biopsy protocol, based on the histological analysis of cores in patients with prostatic-specific antigen lower than 6 ng/ml, prostatic volume lower than 40 cm³ and/or younger than 60 years old.
Secondary ID(s)
Source(s) of Monetary Support
Fundação de Apoio à Universidade Federal de São Paulo
Coordenação de Aperfeicoamento de Pessoal de Nível Superior
Secondary Sponsor(s)
Fundação de Apoio à Universidade Federal de São Paulo
Ethics review
Results
Results available:
Date Posted:
Date Completed:
URL:
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