Chan SY, Ng CF, Lee KW, Yee CH, Chiu PK, Teoh JY, Hou SS Differences in cancer characteristics of Chinese patients with prostate cancer who present with different symptoms. Hong Kong Med J. 2017 Feb;23(1):6-12. doi: 10.12809/hkmj164875. Epub 2016 Dec 9.
Chiu PK, Alberts AR, Venderbos LDF, Bangma CH, Roobol MJ Additional benefit of using a risk-based selection for prostate biopsy: an analysis of biopsy complications in the Rotterdam section of the European Randomized Study of Screening for Prostate Cancer. BJU Int. 2017 Sep;120(3):394-400. doi: 10.1111/bju.13913. Epub 2017 Jun 5.
Chiu PK, Roobol MJ, Nieboer D, Teoh JY, Yuen SK, Hou SM, Yiu MK, Ng CF Adaptation and external validation of the European randomised study of screening for prostate cancer risk calculator for the Chinese population. Prostate Cancer Prostatic Dis. 2017 Mar;20(1):99-104. doi: 10.1038/pcan.2016.57. Epub 2016 Nov 29.
Chiu PK, Roobol MJ, Teoh JY, Lee WM, Yip SY, Hou SM, Bangma CH, Ng CF Prostate health index (PHI) and prostate-specific antigen (PSA) predictive models for prostate cancer in the Chinese population and the role of digital rectal examination-estimated prostate volume. Int Urol Nephrol. 2016 Oct;48(10):1631-7. doi: 10.1007/s11255-016-1350-8. Epub 2016 Jun 27.
Chiu PK, Teoh JY, Lee WM, Yee CH, Chan ES, Hou SM, Ng CF Extended use of Prostate Health Index and percentage of [-2]pro-prostate-specific antigen in Chinese men with prostate specific antigen 10-20 ng/mL and normal digital rectal examination. Investig Clin Urol. 2016 Sep;57(5):336-42. doi: 10.4111/icu.2016.57.5.336. Epub 2016 Aug 31.
Epstein JI, Egevad L, Amin MB, Delahunt B, Srigley JR, Humphrey PA; Grading Committee The 2014 International Society of Urological Pathology (ISUP) Consensus Conference on Gleason Grading of Prostatic Carcinoma: Definition of Grading Patterns and Proposal for a New Grading System. Am J Surg Pathol. 2016 Feb;40(2):244-52. doi: 10.1097/PAS.0000000000000530.
Presti JC Jr, O'Dowd GJ, Miller MC, Mattu R, Veltri RW Extended peripheral zone biopsy schemes increase cancer detection rates and minimize variance in prostate specific antigen and age related cancer rates: results of a community multi-practice study. J Urol. 2003 Jan;169(1):125-9. doi: 10.1016/S0022-5347(05)64051-7.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
