Clinical practice guidelines for PSA testing and early management of test-detected prostate cancer

Authors:

Details:

  1. Sax Institute and University of Sydney, New South Wales, Australia.
  2. Prostate Cancer Foundation of Australia, New South Wales, Australia.
  3. Griffith Health Institute, Griffith University, Queensland, Australia.

Abstract

There is a consensus among relevant peak professional bodies, government and non-government organisations in Australia, that Australian clinical practice guidelines for prostate specific antigen (PSA) testing and early management of test-detected prostate cancer are needed. Work is underway on systematic reviews of the evidence. Guideline development based on systematic review covers clinical questions relating to underlying risk of prostate cancer, PSA testing, investigation of men with positive tests and early management choices, the last relating particularly to choice among active surveillance, watchful waiting and immediate definitive treatment. National Health and Medical Research Council processes are being followed and the council’s approval of the finished product will be sought. Public consultation on draft guidelines is expected to start in December 2014 and the council’s approval is expected to be obtained in June 2015 or later. Planning for guideline dissemination and implementation is essential.


Over the 20 years to 2009, the number of newly-diagnosed prostate cancers in Australian men increased four-fold from 5311 in 1989 to 10,627 in 1999 and 21,808 in 2009.1 While as much as half of this was due to population ageing, age-adjusted incidence rates also increased substantially, from 92.9 per 100,000 in 1989 to 194.3 in 2009, which 2010 figures (the latest publicly available) suggest may have been the peak year.

The beginning of this doubling in rates coincided with increasing use of prostate specific antigen (PSA) testing,2 which by 2007-08 had reached annual levels of uptake in Australian men 45-74 years of age that were close to those attained by Australia’s organised screening programs for breast cancer and cervical cancer.3 Some 20% of PSA tests are done in men younger than 45 or older than 74, and research into community attitudes indicates there is widespread public confusion about the usefulness of testing.4

In late 2011, it became evident, from public statements made by the Urological Society of Australia and New Zealand, the Royal Australian College of General Practitioners, the Royal College of Pathologists of Australasia, Cancer Council Australia, Prostate Cancer Foundation of Australia (PCFA) and Cancer Australia, that there was a consensus in support of developing Australian guidelines for PSA testing for the early diagnosis of prostate cancer.5

In 2012, PCFA, in collaboration with Cancer Council Australia, undertook a consultative process that led, in November, to the first meeting of an expert advisory panel, chaired by Emeritus Professor Villis Marshall, which approved a series of clinical questions to underpin the development of Clinical Guidelines for PSA Testing and the Early Management of PSA-detected Prostate Cancer. The panel included experts in cancer control, consumer advocacy, epidemiology, general practice, medical oncology, nursing, pathology, psycho-oncology, public health, radiation oncology, rehabilitation and urology, who were nominated by the relevant Australian peak bodies. Panel members were appointed to guideline development groups for each clinical question. The need to maximise the potential benefits (reduced morbidity and mortality from prostate cancer) and minimise the potential harms of PSA-testing (resulting mainly from false positive and false negative tests and detection of prostate cancers that would not otherwise present during a man’s lifetime),6 were paramount in the panel’s thinking.

In early 2013, Cancer Council Australia’s Clinical Guidelines Network established a systematic review team, which PCFA funded, to undertake the literature reviews required to inform guideline development. These reviews use as a starting point, prior systematic reviews that underlie guidelines developed internationally with similar scope. In practice, however, few of the prior reviews have been found to have sufficient scope or to be sufficiently well done or up-to-date to facilitate the current process.

Clinical questions

The clinical questions the expert advisory panel agreed to and later refined are summarised in box 1.

Box 1: Clinical questions for clinical practice guidelines for PSA testing and early management of test-detected prostate cancer

Developing the guidelines

Cancer Council Australia and PCFA are developing the guidelines in accordance with the Australian National Health and Medical Research Council’s (NHMRC’s) procedures and requirements for meeting the 2011 NHMRC standard for clinical practice guidelines outlined in box 2 (National Health and Medical Research Council. Procedures and requirements for meeting the 2011. NHMRC standard for clinical practice guidelines – Summary for developers. Melbourne: National Health and Medical Research Council; 2011). In addition, Cancer Council Australia and PCFA will seek NHMRC approval of the guidelines, which NHMRC will give subject to compliance with a range of process requirements and conformity with the standard.

Box 2: Requirements of the NHMRC standard for clinical practice guidelines development

We anticipate that the draft guidelines will enter the public consultation and independent external clinical expert review phases in early December 2014. Assuming they do, the earliest they can receive NHMRC approval is June 2015. Following approval, the guidelines will be published on Cancer Council Australia’s cancer guidelines wiki platform (wiki.cancer.org.au) and be made available through NHMRC’s clinical practice guidelines portal (clinicalguidelines.gov.au). It is anticipated that the wiki platform will be used to keep the guidelines up-to-date. Under present procedures, guidelines updated through the platform will not be NHMRC approved unless or until they go through the full NHMRC guideline development and approval process.

Implementation

The guidelines will do little to increase benefit or reduce harm if they are published but not used. The primary audiences for the guidelines are general practitioners advising men who are considering testing and urologists advising men who have either received a negative biopsy or who have been diagnosed with prostate cancer. While we sense relevant health practitioners are waiting for these guidelines, anticipation does not guarantee adoption in practice. Cancer Council Australia and PCFA must work with the relevant professional peak bodies, government and other non-government organisations to plan for wide dissemination and implementation as soon as the guidelines are approved.

References

  1. http://www.aihw.gov.au/acim-books/
  2. Smith DP, Supramaniam R, Marshall VR, et al. Prostate cancer and prostate-specific antigen testing in New South Wales. Med J Aust. 2008;189(6):315-8.
  3. http://www.medicareaustralia.gov.au/statistics/mbs_item.shtml
  4. Lowe A, Bennett M, Badenoch S. Research Awareness, Support: Ten Years of Progress in Prostate Cancer. Prostate Cancer Foundation of Australia Sydney 2012.
  5. Hanrahan C. Action planned on national PSA testing guideline. Medical Observer 4th October 2011. Cirrus Media Pty Ltd Sydney 2011.
  6. Caruana M, Jung-Kang Y, Smith D et al. Estimating the benefits and harms of PSA testing in Australian context. Cancer Forum. 2014;38(3)221-223.38(3)221-223

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