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2012 ASCO Annual Meeting: Immediate Impact on Clinical Practices - Prostate Cancer

Introduction:

In an effort to provide you with timely market feedback from ASCO 2012, OBR and MDOutlook Oncology Intelligence are pleased to share results from MDOutlook’s 5th Annual post-ASCO survey fielded among its global network of more than 62,000 cancer providers.

This forth Quick-Poll to be published in the OBR blog explores Prostate Cancer. Take a look back at our previous blog postings to see QuickPolls on other tumor types as well.

Quick Poll Methodology and Respondents’ Geographic Distribution

  • Primary research phase involved a global survey to medical oncologists, urologists and multi-disciplinary physicians with an identified clinical interest in prostate cancer utilizing targeting parameters within the proprietary MDOUTLOOK global cancer treater database
  • Timing: June 2012. One week after 2012 American Society of Clinical Oncology (ASCO) Annual Meeting, held in Chicago, IL., May 31-June 4, 2012
  • Fielding via <10 minute long interactive internet survey utilizing proven effective methodology via the MDOUTLOOK survey tool
  • Survey closed 5 days after fielding
  • Response: 89 on June 25th
  • No financial incentives provided for participation

Attendance at 2012 ASCO Annual Meeting

Key Conclusions:

  • About half of all survey respondents attended this year’s ASCO annual meeting
  • Relatively equal attendance by US and Ex-US respondents

Survey Results:

1) Continuous Androgen Deprivation is Standard of Care for Hormone- Sensitive Metastatic Prostate Cancer

Key Conclusions:

  • Continuous androgen deprivation is preferred over intermittent androgen therapy for the treatment of hormone-sensitive metastatic prostate cancer
    • 2.5X more usage of CAD than IAD for both US and Ex-US in past year
    • 3X versus 2.5X more usage of CAD than IAD expected in the upcoming year for the US and Ex-US, respectively

2) Abiraterone Acetate is Expected to be More Clinically Important for Chemotherapy-Naïve mCRPC Patients than in the Neoadjuvant Setting

Key Conclusions:

  • Prostate cancer treaters expect abiraterone acetate to have significant clinical activity for use in chemotherapy-naïve metastatic castration resistant prostate cancer (mCRPC)
    • Abiraterone acetate  is anticipated to be used selectively in the neoadjuvant setting
  • No overall difference in responses observed for US versus Ex-US respondents

3) Enzalutamide and Cabozantinib Are Both Expected to Impact the Treatment Landscape for  CRPC

Key Conclusions:

  • Most physicians are aware of the new agents enzalutamide  and cabozantinib and anticipate they will have somewhat of a large clinical impact on current  treatment approaches for CRPC
    • Trends are slightly greater for enzalutamide as compared to cabozantinib
  • Ex-US oncologists are slightly less favorable of cabozantinib than US physicians

4) Differential Split Amongst US and Ex-US Physicians Regarding the Expected Impact of Alpharadin for Treating Bone Metastases in CRPC

Key Conclusions:

  • Oncologists differ in regards to the expected clinical impact of alpharadin for the treatment of bone metastases in CRPC
    • Greatest percentage of US physicians (36%) state this drug will have a large impact in a minority of patients
    • Largest percentage of Ex-US physicians (26%) report this agent will have a small impact in a minority of patients
  • Independent of geographic region, most physicians will use alpharadin in a selected subset of patients

5) Radio-pharmaceuticals are Primarily Administered from Institutional/Hospital Nuclear Medicine Departments

Key Conclusions:

  • Greatest majority of respondents utilize their institutional/hospital nuclear medicine department for administering radio-pharmaceuticals
    • US physicians use institutional resources slightly more than Ex-US oncologists
  • Independent of geographic region, ~20% of respondents refer patients to locations 1-5 miles from their practice

Conclusions from the ASCO 2012 Quick Poll on Prostate Cancer

  • Physician respondents preferentially use continuous androgen deprivation therapy over intermittent androgen deprivation therapy for patients with hormone-sensitive metastatic prostate cancer
    • Expected usage of CAD versus IAD in the upcoming year is 3X versus 2.5X more for US and Ex-US respondents, respectively
  • For chemotherapy-naïve metastatic castration resistant prostate cancer (mCRPC), the expected clinical importance of abiraterone acetate represents a significant therapeutic development for the global oncology community
    • Use of abiraterone acetate in the neoadjuvant setting is expected to have a slightly lower clinical relevance
    • No overall differences amongst geographic regions
  • The new agents, enzalutamide and cabozantinib are both expected to clinically impact treatment approaches for CRPC throughout the world
    • Ex-US respondents suggest slightly less of an impact for cabozantinib
  • Disparity amongst US and Ex-US respondents in regards to the expected clinical impact of alpharadin for the treatment of bone metastases in CRPC
    • US respondents expect alpharadin will greatly impact a small subset of patients
    • Ex-US respondents expect alpharadin to have a small impact on a moderate amount of patients
  • Radio-pharmaceuticals are mainly administered from own institutional/hospital nuclear medicine departments

Final Thoughts

Quick polls are a fast way of measuring expected acceptance of clinical data post major medical meetings, and perhaps can be used to make some assumptions about adoption amongst providers. In today’s information hungry environment, the speed at which these polls can be conducted and analyzed can be advantageous for market planning and “pressure testing” acceptance of data amongst key stakeholders.

Submitted by Jan Heybroek, President and Robert Stephan, Sr. Director Medical Services, The Arcas Group

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