SciCombinator

Discover the most talked about and latest scientific content & concepts.

Concept: Prostate biopsy

45

To evaluate an epigenetic assay performed on tissue from negative prostate biopsies in a group of African American (AA) men undergoing repeat biopsy, and to compare accuracy for predicting repeat biopsy outcome to prior studies conducted in predominantly Caucasian populations.

Concepts: Cancer, Demographics of the United States, White American, African American, Southern United States, Prostate biopsy, Jim Crow laws, Democratic Party

28

The PCA3 urinary assay has shown promise in predicting the presence of prostate cancer. We evaluated the value of this test in patients undergoing initial and repeat prostate biopsy.

Concepts: Cancer, Metastasis, Obesity, Prostate cancer, Radiation therapy, Screening, PCA3, Prostate biopsy

24

To compare fosfomycin trometamol (FT) and ciprofloxacin (CIP) for antibiotic prophylaxis in transrectal prostate biopsy (TR-PB).

Concepts: Bacteremia, Prostate biopsy

14

PURPOSE: Recent studies have identified genetic variants associated with both increased serum PSA concentrations and prostate cancer risk, raising the possibility of diagnostic bias. By correcting for the effects of these variants on PSA levels, it may be possible to create a personalized PSA cutoff to more accurately identify individuals for whom biopsy is recommended. We therefore determined how many men would continue to meet common biopsy criteria after genetic correction of their measured PSA concentrations. MATERIALS AND METHODS: The genotypes of 4 single nucleotide polymorphisms (SNPs) previously associated with serum PSA levels (rs2736098, rs10788160, rs11067228, and rs17632542) were determined in 964 healthy Caucasian volunteers without prostate cancer. Genetic correction of the PSA was performed by dividing an individual’s PSA value by his combined genetic risk. Analyses were used to compare the percentage of men that would meet commonly used biopsy thresholds (≥2.5 or ≥4.0 ng/mL) before and after genetic correction. RESULTS: Genetic correction of serum PSA results was associated with a significantly decreased frequency of men meeting biopsy thresholds. Genetic correction could lead to a 15% and 20% relative reduction in the total number of biopsies using a biopsy threshold of ≥2.5 or ≥4.0 ng/mL, respectively. In addition, genetic correction could result in an 18-22% reduction in the number of potentially unnecessary biopsies and a 3% decrease in potentially delayed diagnoses. CONCLUSIONS: Our results suggest that 4 SNPs can be used to adjust a man’s measured PSA concentration and potentially delay or prevent unnecessary prostate biopsies in Caucasian men.

Concepts: DNA, Bioinformatics, Cancer, SNP array, Single-nucleotide polymorphism, Prostate biopsy, Single-base extension

5

Many men with elevated prostate-specific antigen (PSA) levels in serum do not have aggressive prostate cancer and undergo unnecessary biopsy. Retrospective studies using cryopreserved serum suggest that four kallikrein markers can predict biopsy outcome.

Concepts: Cancer, Metastasis, Prostate cancer, Urology, Radiation therapy, Prostate, Prostate-specific antigen, Prostate biopsy

2

We compared the effectiveness of targeted prophylaxis (TP) to augmented empirical prophylaxis (AEP) and single agent empirical prophylaxis (SAEP) in preventing sepsis after transrectal prostate biopsy (TRPB).

Concepts: Prevention, Prostate biopsy

2

The objective of this study is to test if patients' health-related quality of life (HRQoL) declines after prostate biopsy to detect Pca, and after subsequent treatment decision-making in case Pca is confirmed, and to test whether personality state and traits are associated with these potential changes in HRQoL.

Concepts: Cancer, Metastasis, Pathology, Prostate cancer, Radiation therapy, Quality, Medical test, Prostate biopsy

2

We analyzed the rates of disease reclassification at initial (i) and subsequent surveillance prostate biopsy (SPBx) and treatment outcomes of deferred therapy among men on active surveillance (AS) for prostate cancer.

Concepts: Cancer, Metastasis, Obesity, Prostate cancer, Radiation therapy, BRCA2, Screening, Prostate biopsy

2

Gleason grading is the strongest prognostic parameter in prostate cancer. Gleason grading is categorized as Gleason ≤6, 3+4, 4+3, 8, and 9-10, but there is variability within these subgroups. For example, Gleason 4 components may range from 5-45% in a Gleason 3+4=7 cancer.

Concepts: Cancer, Metastasis, Prostate cancer, Urology, Radiation therapy, Screening, Benign prostatic hyperplasia, Prostate biopsy

1

To describe our procedural technique and initial outcomes performing in-office transperineal prostate biopsies using the PrecisionPoint Transperineal Access System.

Concepts: Cancer, Biopsy, Prostate cancer, Anesthesia, Local anesthesia, Medical tests, Local anesthetic, Prostate biopsy