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FDA and Patient Interactions on
 Benefit-Risk Determinations
     James Valentine, MHS, JD Candidate
      Program Manager, FDA Patient Network
        FDA Office of Special Health Issues

                    July 25, 2012
     Regulatory Education and Action for Patients
                       (REAP)
Overview
• Traditional Patient Interactions
   – FDA Patient Representative Program
   – FDA Patient Network
• New Opportunities
   – FDASIA “Patient Provision”
   – CDER’s Patient-Focused Drug Development
   – CDRH’s Patient Risk Tolerance Survey for Obesity Devices
• Appendices
   – Appendix A: CDER’s Benefit-Risk Framework
   – Appendix B: CDRH/CBER’s Benefit-Risk Guidance
Traditional Patient Interactions in
        FDA Regulatory Decision-Making



http://www.fda.gov/ForConsumers/ByAudience/ForPatientAdvocates/Patien




                                                                  3
FDA’s Patient Advocacy Programs
Office of Special Health Issues
• Patient Representation Program
• Patient Network (forthcoming)




                            4
FDA Patient Representative Program
Role of the FDA Patient Representative:
• Provide FDA with the unique perspective of patients and
  family members directly affected by serious or life-
  threatening disease.
• Serve in several ways, including:
   – On Advisory Committees
   – As Consultants to Review Divisions




                                5
FDA Patient Representative Program (cont.)
The Program’s Activities:
• Recruitment of New Patient Representatives
• Selection of Patient Representatives for:
   – Advisory Committees
   – Consultation with Review Division
• Conducts Training For Patient Representatives
   – Individual FDA 101 Training
   – Monthly Webinars
   – Annual Workshop for Newly Recruited Patient Representatives

• More information:
  http://www.fda.gov/forconsumers/byaudience/forpatientadvocates/pati
                                  6
FDA Patient Network
• New Program
• Goals:
   – Scale up current educational and advocacy activities
   – Proactive approach to patient advocacy
   – Primary FDA educational and advocacy resource
• Network Activities:
   – Biweekly Email Newsletter
   – Annual Conference
       Inaugural Meeting: May 18, 2012 “FDA Working with Patients to Explore
        Benefit/Risk: Opportunities and Challenges”
   – Multifaceted Website
                                     7
Food and Drug Administration Safety and
  Innovation Act – “Patient Provision”
         Office of Special Health Issues
                     (OSHI)
Patient Participation in
Medical Product Discussions under FDASIA
• Provision will assist the agency in developing and
  implementing strategies to solicit the views of patients
  during the medical product development process and
  consider their perspectives during regulatory discussions.
• This will include:
   – Fostering participation of FDA Patient Representatives as Special
     Government Employees in appropriate agency meetings with
     medical product sponsors and investigators; and,
   – Exploring means to provide the identification of FDA Patient
     Representatives who do not have any, or have minimal, financial
     interest in the medical products industry.
• FDASIA. Title XI. Subtitle C. Section 1137.
Patient-Focused Drug Development
  Center for Drug Evaluation and Research
                  (CDER)
Understanding the Patient Perspective:
Patient-Focused Drug Development

 • Assessment of a drug’s benefits and risks involves analysis of
   severity of condition and current state of the treatment
   armamentarium
 • Patients who live with a disease have a direct stake in drug
   review process and are in a unique position to contribute to
   drug development
 • However, current approach to patient input generally relies on
   feedback received at FDA Advisory Committee meetings
 • Review process could benefit from broader and more systematic
   approach to obtaining patient perspective on disease severity
   and unmet medical need by therapeutic or disease areas
                                                                    11
Patient-Focused
Drug Development in PDUFA V

• PDUFA V includes dedicated resources to expand activities
  that will provide review divisions with patient input
• FDA will convene meetings with stakeholders focused on
  specific disease areas during PDUFA V
   – Four public workshops per year—a total of 20 meetings over 5
     years
   – Each meeting will feature a different disease area, reviewing the
     armamentarium for that indication, and identifying areas of
     unmet need
   – Participants will include FDA review staff, the relevant patient
     advocacy community, and other interested parties


                                                                         12
Analysis of Condition:
Sample Questions FDA Considers
• What is the treated (or prevented) condition?
• What are its clinical manifestations (i.e., symptoms that are either
  reported or observed)?
• What is known about the natural history and progression of the
  condition, including in specific subpopulations?
• How severe is the condition for those who have it?
    – How does severity vary across the sub-populations we have defined?
      (Note specific subpopulations and nature of differences.)
• What is the basis for our assessment of the condition and its severity?
  (Note any relevant literature, clinical experience, expert opinion, etc.)
• What are the major uncertainties in the available information? What
  are their implications?



                                                                              13
Unmet Medical Need:
Sample Questions FDA Considers

• What other pharmacological therapies are approved for this
  condition?
• How effective and well-tolerated are these alternative therapies?
    – How does their effectiveness and tolerance vary by sub-population?
• What off-label pharmacological therapies or non-pharmacological
  might be considered?
    – How effective and how well tolerated are they reported/believed to be?
• What kinds of evidence are available about the use of alternative
  treatments for this condition?
• What is the strength of evidence in each case?
• What are the major uncertainties in the evidence? What are the
  implications of any uncertainty?


                                                                               14
Drug Development and Review

                                                                                               FDA
    Basic Research/Discovery




                                                                  Drug Developers




                                                                                                  Post-marketing
                                                       Pre-IND                               NDA/BLA Review
                                   “Valley of death”
                               Translational Gap
                                                                                       NDA/
                                   Translational         IND               Clinical    BLA



                                                                 Ph 1   Ph 2          Ph 3         Ph 4
                                                                                      Use of Benefit-Risk
undefined                            ~5-10 years                          ~5-10 years Assessment ongoing
                                                                                      Framework in drug
                                                                                      review
Patient-focused development
For a specific disease area

                                                                            FDA
    Basic Research/Discovery




                                                      Drug Developers




                                                                                                    Post-marketing
                                                    Pre-IND
                               PRO tool development and
                                                                                             NDA/BLA Review
                               qualification
                                                                                       NDA/
                                  Translational           IND            Clinical      BLA



                                                                                                     Ph 4
   Patients identify important                                          Patient input on
   dimensions of benefit not                                            effectiveness &
undefined
   adequately captured in years
                       ~5-10                                             ~5-10 years
                                                                        tolerability of currently   ongoing
   current studies; need for PRO                                        available therapy (unmet
   tool(s)                                                              medical need)
Next Steps:
Planning for PFDD in PDUFA V
• Summer 2012:
   – Develop preliminary list of 20 disease areas for public comment
   – Develop basic roadmap that could be used by any patient group interested
     in helping to identify important but unaddressed aspects of their disease,
     potentially leading to development of PRO measures used in evaluating
     new therapies
• September 2012
   – Publish FR notice with preliminary list of 20 disease areas for public
     comment
• October 2012
   – Plan to hold public meeting to:
        Discuss the proposed list of disease areas for the PDUFA meetings
        Discuss strategies for getting broader and representative public input
        Discuss basic roadmap for identification of important patient outcomes and
         strategies for collaborative development of PRO measures
                                                                                      17
Patient Risk Tolerance Survey
      for Obesity Devices
Center for Devices and Radiological Health
                 (CDRH)
Patient Risk Tolerance Survey Overview
• CDRH has been exploring new ways to seek inputs from
  patients and their advocates
• The patient risk tolerance survey for obesity devices is
  FDA’s first attempt to collect quantitative data on
  patient preferences
• The survey conducted using scientifically valid methods
  can complement anecdotal feedbacks that FDA
  currently receives through existing channels
• Survey data collected systematically will provide
  valuable information about patient preferences

                                                             19
Why Weight-Reduction Devices?

• Obesity is a condition with high prevalence
• Treating obese patients has a high public health impact
• Obesity treatments offer difficult tradeoffs to be made
• Broad array of potential devices with diverse benefit-risk
  profiles
• This pilot survey may identify challenges and
  opportunities of incorporating survey results into CDRH
  decision making process

                                                               20
Patient Risk Tolerance Survey Participants
Survey obese subjects willing to lose weight

• 450 obese respondents with BMI ≥ 30 kg/m2(self-
  reported weight and height in the last 3 years)
• Recruited from nationally representative Internet
  panel
• Administered via the Internet
• Target between 100 and 150 respondents who
  underwent prior weight reduction procedures (gastric
  bypass or banding) to capture “before and after”
  experiences                                            21
Survey Instrument Development

Survey instrument has been jointly developed by the CDRH and
Research Triangle Institute, Health Solutions (RTI – HS)

                        Four phases
 1. Study design and development of survey instrument
 2. Pre-testing of survey instrument
     • 9 Face-to-face cognitive interviews
     • Improvement and validation of survey instrument
     • Federal Register Notice published on April 19, 2012
 3. Administration of the survey to 450 respondents
 4. Analysis of results
                                                               22
Quantitative Approach:
Assessing Patient’s Benefit-Risk Preferences
             Risk

                                               Benefit-Risk
                                                Trade-off
                                                  Curve


                                               Device A
       Risk
    Acceptable
     Maximum
                 Δ Risk




                          Weight Loss
                                                  Effectiveness


                                                                  23
Stated Choice Methods

 • Capture respondent’s willingness to accept tradeoffs among
   features or attributes of different treatment alternatives
 • Alternatives consists of different combinations of attributes
   such as benefits, side effects, and other features
 • Respondents state their choices in a series of pairs of
   hypothetical alternatives
 • The observed pattern of respondents’ choices reveals the
   relative importance of attributes and levels in their minds
 • Example result: Patients would be willing to accept 2 more
   months of mild-to-moderate side effects to achieve an
   additional weight loss of 25 pounds
                                                                   24
The Survey Instrument:
Stated Choice Question
•   Respondents will indicate their choices between pairs
    of hypothetical obesity devices
•   Each treatment is defined by its features (attributes)
•   Each attribute has a set of levels (values)




                                                             25
Feature                              Device A                         Device B
  Choice
Question   Type of operation                                                   Endoscopic surgery


Example:   Recommended diet restriction                                 Wait 4 hours between meals


Judgment   On average, how much weight is
           lost
                                                                     30 lbs.                          60 lbs.

   Call    On average, how long the weight
                                                            Weight loss lasts 5 years       Weight loss lasts 1 year
           loss lasts

           Average reduction in dose of
           prescription drugs for diabetes at                    Eliminates the need for prescription drug
           the lower weight

           On average, how long side effects
           last
                                                                  Last 1 month                      Last 1 year
           (Remember that side effects will limit your
           ability to do daily activities several times a
           month.)

           Chance of a side effect requiring
                                                                                     None
           hospitalization




           Chance of dying from getting the
           weight loss device
                                                                      10%                             1%
                                                                 (10 out of 100)                 (1 out of 100)        26

           Which weight-loss device do you
           think is better for people like you?                      Device A                       Device B
Questions?
James Valentine, MHS, JD Candidate
FDA Office of Special Health Issues
301-796-8458
james.valentine@fda.hhs.gov

Acknowledgments
CDER Benefit-Risk Framework: Patrick Frey, Director, Office of Planning and Analysis, CDER
CDER Patient Focused Drug Development: Theresa Mullin, PhD, Director, Office of Planning and
   Informatics, CDER
CDRH Benefit-Risk Guidance: Peper Long, Associate Director for External Relations, CDRH
Patient Risk Tolerance Survey for Obesity Devices: Martin Ho, MS, Division of Biostatistics, Office
   of Surveillance and Biometrics, CDRH
Appendix A:
CDER’s Benefit-Risk Framework
A Benefit-Risk Framework:
What problem are we trying to address?
• CDER identified the need for a more structured benefit-
  risk assessment in the review process
    Better communicate the reasoning behind CDER’s decisions
       o Which benefits/risks or other factors were considered?
       o How was evidence interpreted?
       o How were risks and benefits weighed?
    Ensure the “big picture” is kept in mind during a complex, detailed
     review
• This effort was initiated in 2009 and has continued with
  the support of internal and external decision science and
  drug regulatory experts
Framework Development
• Developed and tested a conceptual framework
     Explored 6 case studies of past regulatory decisions to “tease out” the
      range of benefits and risks considered
     One-on-one interviews of key review disciplines painted the picture of the
      relevant issues for each decision
• Road-tested in more recent regulatory decisions
     Explored 2 additional case studies using a focus group process
     Framework revised as a result
• Overall process and development guided by senior management
     Office of New Drugs, Office of Surveillance and Epidemiology, Office of
      Biostatistics
     Recognized that effective decision support must begin with an
      understanding of how the decision-makers think, i.e., you must bring them
      along for the “ride”
Benefit-Risk Assessment Framework
   Decision Factor         Evidence and Uncertainties           Conclusions and Reasons
                     Summary of evidence:               Conclusions (implications for decision):
     Analysis of
     Condition
                     Summary of evidence:               Conclusions (implications for decision):
   Unmet Medical
      Need
                     Summary of evidence:               Conclusions (implications for decision):

      Benefit

                     Summary of evidence:               Conclusions (implications for decision):

        Risk

                     Summary of evidence:               Conclusions (implications for decision):

  Risk Management

                           Benefit-Risk Summary and Assessment
The Rows:
Key Benefit-Risk Considerations
Information on the Therapeutic Area
    Analysis of Condition     Provide clinical context for weighing
    Unmet Medical Need        benefits and risksclinical context for
                                          Provide
                                          weighing benefits and risks


Product-Specific Information
    Benefit                   Use all information available to to
                                          Use all information available
                               make judgments on the benefits and
                                          make judgments on the benefits
    Risk                      risks to the population population
                                          and risks to the

                                          Describes risk management
                               Describe risk management plan (if
                                         plan (if required) and its
    Risk Management           required) and its expectedreduce orto
                                         expected impact to impact
                               reduce or further characterize
                                         further characterize safety
                                         concerns
                               safety concerns
The Columns:
Evidence and Conclusions

Evidence and Uncertainties
    • What you know (facts)
    • What you don’t know (uncertainties and underlying assumptions)
    • How good are the data?

Conclusions and Reasons
    • What do you make of the data and uncertainties?
    • Analysis of the information and its clinical relevance
    • Drawing conclusions within each key consideration

Benefit Risk Summary & Assessment
A balanced written analysis of the factors and their tradeoffs that
summarizes the resulting regulatory recommendation or action
B-R Framework designed to
“tell the story” of the regulatory decision
• What is the problem?
    Analysis of the Condition
• What other potential interventions exist?
    Unmet Medical Need
• What is the benefit of the proposed intervention?
    Benefit
• What am I worried about?
    Risk
• What can I do to mitigate/monitor those concerns?
    Risk Management
Benefit-Risk in PDUFA V:
FDA’s Commitments
• Publish a 5-year plan that describes FDA’s approach to
  implement a structured benefit-risk framework by
  December 31, 2012 and begin execution by September 30,
  2013
• Conduct two public workshops on benefit-risk from the
  regulator’s perspective that will begin by December 31,
  2013
• Develop an evaluation plan to ascertain the impact of the
  benefit-risk framework
• Revise review templates, decision memo templates and
  MaPPs as appropriate to incorporate FDA’s approach

                                                              35
Appendix B:
CDRH/CBER’s Benefit-Risk Guidance
Guidance for Industry and FDA Staff:

Factors to Consider When Making Benefit-Risk Determinations in Medical
Device Premarket Approval and De Novo Classifications

Date of Publication: March 27, 2012
Purpose
• To identify and clarify the factors FDA considers when making
  benefit-risk determinations during our approval decisions


• To facilitate transparency, consistency, and predictability of
  the premarket review process for benefit-risk assessments
Background
• §513(a) of the Federal Food, Drug & Cosmetic Act
    – FDA determines if PMA applications provide “reasonable assurance of safety and
      effectiveness” by “weighing any probable benefit to health from the use of the device
      against any probable risk of injury or illness from such use,” among other relevant factors
    – FDA reviews valid scientific evidence to determine if data support claims made by
      Sponsor
        • Clinical data
        • Non-clinical data
        • Intended use/Indications for Use
    – For de novo classification petitions [513(f)(2)], FDA also makes a classification
      determination after consideration of all risks and whether they can appropriately be
      mitigated through general and/or special controls.
Development Process

• Contributing Team:
   – Benefit-risk working group from CDRH


• Chronology of Key Milestones:
   – August 2011: Draft issued for public comment
   – November 15, 2011: Docket closed
   – Final published on March 27, 2012
Content of Guidance

• Addresses factors FDA considers important as part of the
  benefit-risk determination

• Provides examples of how FDA uses the factors in making
  benefit-risk determinations

• Includes worksheet, which reviewers will use in making
  benefit-risk determinations as part of the premarket process
Factors FDA Considers When Making
Benefit-Risk Determinations
Factors FDA Considers When Making Benefit-Risk
(B-R) Determinations

• Factors that characterize benefit
• Factors associated with risks
• Additional factors to be considered
Benefit factors in B-R determinations
  • Type of benefit
     – device’s impact on clinical management, patient health, and patient
       satisfaction in the target population,
  • Magnitude of the benefit(s)
     – change in subjects’ condition or clinical management
Benefit factors in B-R determinations (cont.)

• Probability of experiencing one or more benefit(s)
   – which patients may experience a benefit?
• Duration of effect
    – A treatment whose benefit lasts longer is more desirable than a treatment that
      must be repeated.
Risk factors in B-R determinations
• Severity, types, number and rates of harmful events
   – device-related serious adverse events
   – device-related non-serious adverse events
   – procedure-related complications

• Probability of harmful event
• Duration of harmful events
• Risk from false-positive or false-negative results for
  diagnostics
Other Factors in B-R Determinations (Cont’d)

  • Availability of alternative treatments or diagnostics

  • Risk mitigation

  • Postmarket data

  • Novelty of technology addressing an unmet medical need
Worksheet

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FDA and Patient Interactions On Benefit-Risk Determinations

  • 1. FDA and Patient Interactions on Benefit-Risk Determinations James Valentine, MHS, JD Candidate Program Manager, FDA Patient Network FDA Office of Special Health Issues July 25, 2012 Regulatory Education and Action for Patients (REAP)
  • 2. Overview • Traditional Patient Interactions – FDA Patient Representative Program – FDA Patient Network • New Opportunities – FDASIA “Patient Provision” – CDER’s Patient-Focused Drug Development – CDRH’s Patient Risk Tolerance Survey for Obesity Devices • Appendices – Appendix A: CDER’s Benefit-Risk Framework – Appendix B: CDRH/CBER’s Benefit-Risk Guidance
  • 3. Traditional Patient Interactions in FDA Regulatory Decision-Making http://www.fda.gov/ForConsumers/ByAudience/ForPatientAdvocates/Patien 3
  • 4. FDA’s Patient Advocacy Programs Office of Special Health Issues • Patient Representation Program • Patient Network (forthcoming) 4
  • 5. FDA Patient Representative Program Role of the FDA Patient Representative: • Provide FDA with the unique perspective of patients and family members directly affected by serious or life- threatening disease. • Serve in several ways, including: – On Advisory Committees – As Consultants to Review Divisions 5
  • 6. FDA Patient Representative Program (cont.) The Program’s Activities: • Recruitment of New Patient Representatives • Selection of Patient Representatives for: – Advisory Committees – Consultation with Review Division • Conducts Training For Patient Representatives – Individual FDA 101 Training – Monthly Webinars – Annual Workshop for Newly Recruited Patient Representatives • More information: http://www.fda.gov/forconsumers/byaudience/forpatientadvocates/pati 6
  • 7. FDA Patient Network • New Program • Goals: – Scale up current educational and advocacy activities – Proactive approach to patient advocacy – Primary FDA educational and advocacy resource • Network Activities: – Biweekly Email Newsletter – Annual Conference  Inaugural Meeting: May 18, 2012 “FDA Working with Patients to Explore Benefit/Risk: Opportunities and Challenges” – Multifaceted Website 7
  • 8. Food and Drug Administration Safety and Innovation Act – “Patient Provision” Office of Special Health Issues (OSHI)
  • 9. Patient Participation in Medical Product Discussions under FDASIA • Provision will assist the agency in developing and implementing strategies to solicit the views of patients during the medical product development process and consider their perspectives during regulatory discussions. • This will include: – Fostering participation of FDA Patient Representatives as Special Government Employees in appropriate agency meetings with medical product sponsors and investigators; and, – Exploring means to provide the identification of FDA Patient Representatives who do not have any, or have minimal, financial interest in the medical products industry. • FDASIA. Title XI. Subtitle C. Section 1137.
  • 10. Patient-Focused Drug Development Center for Drug Evaluation and Research (CDER)
  • 11. Understanding the Patient Perspective: Patient-Focused Drug Development • Assessment of a drug’s benefits and risks involves analysis of severity of condition and current state of the treatment armamentarium • Patients who live with a disease have a direct stake in drug review process and are in a unique position to contribute to drug development • However, current approach to patient input generally relies on feedback received at FDA Advisory Committee meetings • Review process could benefit from broader and more systematic approach to obtaining patient perspective on disease severity and unmet medical need by therapeutic or disease areas 11
  • 12. Patient-Focused Drug Development in PDUFA V • PDUFA V includes dedicated resources to expand activities that will provide review divisions with patient input • FDA will convene meetings with stakeholders focused on specific disease areas during PDUFA V – Four public workshops per year—a total of 20 meetings over 5 years – Each meeting will feature a different disease area, reviewing the armamentarium for that indication, and identifying areas of unmet need – Participants will include FDA review staff, the relevant patient advocacy community, and other interested parties 12
  • 13. Analysis of Condition: Sample Questions FDA Considers • What is the treated (or prevented) condition? • What are its clinical manifestations (i.e., symptoms that are either reported or observed)? • What is known about the natural history and progression of the condition, including in specific subpopulations? • How severe is the condition for those who have it? – How does severity vary across the sub-populations we have defined? (Note specific subpopulations and nature of differences.) • What is the basis for our assessment of the condition and its severity? (Note any relevant literature, clinical experience, expert opinion, etc.) • What are the major uncertainties in the available information? What are their implications? 13
  • 14. Unmet Medical Need: Sample Questions FDA Considers • What other pharmacological therapies are approved for this condition? • How effective and well-tolerated are these alternative therapies? – How does their effectiveness and tolerance vary by sub-population? • What off-label pharmacological therapies or non-pharmacological might be considered? – How effective and how well tolerated are they reported/believed to be? • What kinds of evidence are available about the use of alternative treatments for this condition? • What is the strength of evidence in each case? • What are the major uncertainties in the evidence? What are the implications of any uncertainty? 14
  • 15. Drug Development and Review FDA Basic Research/Discovery Drug Developers Post-marketing Pre-IND NDA/BLA Review “Valley of death” Translational Gap NDA/ Translational IND Clinical BLA Ph 1 Ph 2 Ph 3 Ph 4 Use of Benefit-Risk undefined ~5-10 years ~5-10 years Assessment ongoing Framework in drug review
  • 16. Patient-focused development For a specific disease area FDA Basic Research/Discovery Drug Developers Post-marketing Pre-IND PRO tool development and NDA/BLA Review qualification NDA/ Translational IND Clinical BLA Ph 4 Patients identify important Patient input on dimensions of benefit not effectiveness & undefined adequately captured in years ~5-10 ~5-10 years tolerability of currently ongoing current studies; need for PRO available therapy (unmet tool(s) medical need)
  • 17. Next Steps: Planning for PFDD in PDUFA V • Summer 2012: – Develop preliminary list of 20 disease areas for public comment – Develop basic roadmap that could be used by any patient group interested in helping to identify important but unaddressed aspects of their disease, potentially leading to development of PRO measures used in evaluating new therapies • September 2012 – Publish FR notice with preliminary list of 20 disease areas for public comment • October 2012 – Plan to hold public meeting to:  Discuss the proposed list of disease areas for the PDUFA meetings  Discuss strategies for getting broader and representative public input  Discuss basic roadmap for identification of important patient outcomes and strategies for collaborative development of PRO measures 17
  • 18. Patient Risk Tolerance Survey for Obesity Devices Center for Devices and Radiological Health (CDRH)
  • 19. Patient Risk Tolerance Survey Overview • CDRH has been exploring new ways to seek inputs from patients and their advocates • The patient risk tolerance survey for obesity devices is FDA’s first attempt to collect quantitative data on patient preferences • The survey conducted using scientifically valid methods can complement anecdotal feedbacks that FDA currently receives through existing channels • Survey data collected systematically will provide valuable information about patient preferences 19
  • 20. Why Weight-Reduction Devices? • Obesity is a condition with high prevalence • Treating obese patients has a high public health impact • Obesity treatments offer difficult tradeoffs to be made • Broad array of potential devices with diverse benefit-risk profiles • This pilot survey may identify challenges and opportunities of incorporating survey results into CDRH decision making process 20
  • 21. Patient Risk Tolerance Survey Participants Survey obese subjects willing to lose weight • 450 obese respondents with BMI ≥ 30 kg/m2(self- reported weight and height in the last 3 years) • Recruited from nationally representative Internet panel • Administered via the Internet • Target between 100 and 150 respondents who underwent prior weight reduction procedures (gastric bypass or banding) to capture “before and after” experiences 21
  • 22. Survey Instrument Development Survey instrument has been jointly developed by the CDRH and Research Triangle Institute, Health Solutions (RTI – HS) Four phases 1. Study design and development of survey instrument 2. Pre-testing of survey instrument • 9 Face-to-face cognitive interviews • Improvement and validation of survey instrument • Federal Register Notice published on April 19, 2012 3. Administration of the survey to 450 respondents 4. Analysis of results 22
  • 23. Quantitative Approach: Assessing Patient’s Benefit-Risk Preferences Risk Benefit-Risk Trade-off Curve Device A Risk Acceptable Maximum Δ Risk Weight Loss Effectiveness 23
  • 24. Stated Choice Methods • Capture respondent’s willingness to accept tradeoffs among features or attributes of different treatment alternatives • Alternatives consists of different combinations of attributes such as benefits, side effects, and other features • Respondents state their choices in a series of pairs of hypothetical alternatives • The observed pattern of respondents’ choices reveals the relative importance of attributes and levels in their minds • Example result: Patients would be willing to accept 2 more months of mild-to-moderate side effects to achieve an additional weight loss of 25 pounds 24
  • 25. The Survey Instrument: Stated Choice Question • Respondents will indicate their choices between pairs of hypothetical obesity devices • Each treatment is defined by its features (attributes) • Each attribute has a set of levels (values) 25
  • 26. Feature Device A Device B Choice Question Type of operation Endoscopic surgery Example: Recommended diet restriction Wait 4 hours between meals Judgment On average, how much weight is lost 30 lbs. 60 lbs. Call On average, how long the weight Weight loss lasts 5 years Weight loss lasts 1 year loss lasts Average reduction in dose of prescription drugs for diabetes at Eliminates the need for prescription drug the lower weight On average, how long side effects last Last 1 month Last 1 year (Remember that side effects will limit your ability to do daily activities several times a month.) Chance of a side effect requiring None hospitalization Chance of dying from getting the weight loss device 10% 1% (10 out of 100) (1 out of 100) 26 Which weight-loss device do you think is better for people like you? Device A Device B
  • 27. Questions? James Valentine, MHS, JD Candidate FDA Office of Special Health Issues 301-796-8458 james.valentine@fda.hhs.gov Acknowledgments CDER Benefit-Risk Framework: Patrick Frey, Director, Office of Planning and Analysis, CDER CDER Patient Focused Drug Development: Theresa Mullin, PhD, Director, Office of Planning and Informatics, CDER CDRH Benefit-Risk Guidance: Peper Long, Associate Director for External Relations, CDRH Patient Risk Tolerance Survey for Obesity Devices: Martin Ho, MS, Division of Biostatistics, Office of Surveillance and Biometrics, CDRH
  • 29. A Benefit-Risk Framework: What problem are we trying to address? • CDER identified the need for a more structured benefit- risk assessment in the review process  Better communicate the reasoning behind CDER’s decisions o Which benefits/risks or other factors were considered? o How was evidence interpreted? o How were risks and benefits weighed?  Ensure the “big picture” is kept in mind during a complex, detailed review • This effort was initiated in 2009 and has continued with the support of internal and external decision science and drug regulatory experts
  • 30. Framework Development • Developed and tested a conceptual framework  Explored 6 case studies of past regulatory decisions to “tease out” the range of benefits and risks considered  One-on-one interviews of key review disciplines painted the picture of the relevant issues for each decision • Road-tested in more recent regulatory decisions  Explored 2 additional case studies using a focus group process  Framework revised as a result • Overall process and development guided by senior management  Office of New Drugs, Office of Surveillance and Epidemiology, Office of Biostatistics  Recognized that effective decision support must begin with an understanding of how the decision-makers think, i.e., you must bring them along for the “ride”
  • 31. Benefit-Risk Assessment Framework Decision Factor Evidence and Uncertainties Conclusions and Reasons Summary of evidence: Conclusions (implications for decision): Analysis of Condition Summary of evidence: Conclusions (implications for decision): Unmet Medical Need Summary of evidence: Conclusions (implications for decision): Benefit Summary of evidence: Conclusions (implications for decision): Risk Summary of evidence: Conclusions (implications for decision): Risk Management Benefit-Risk Summary and Assessment
  • 32. The Rows: Key Benefit-Risk Considerations Information on the Therapeutic Area  Analysis of Condition Provide clinical context for weighing  Unmet Medical Need benefits and risksclinical context for Provide weighing benefits and risks Product-Specific Information  Benefit Use all information available to to Use all information available make judgments on the benefits and make judgments on the benefits  Risk risks to the population population and risks to the Describes risk management Describe risk management plan (if plan (if required) and its  Risk Management required) and its expectedreduce orto expected impact to impact reduce or further characterize further characterize safety concerns safety concerns
  • 33. The Columns: Evidence and Conclusions Evidence and Uncertainties • What you know (facts) • What you don’t know (uncertainties and underlying assumptions) • How good are the data? Conclusions and Reasons • What do you make of the data and uncertainties? • Analysis of the information and its clinical relevance • Drawing conclusions within each key consideration Benefit Risk Summary & Assessment A balanced written analysis of the factors and their tradeoffs that summarizes the resulting regulatory recommendation or action
  • 34. B-R Framework designed to “tell the story” of the regulatory decision • What is the problem?  Analysis of the Condition • What other potential interventions exist?  Unmet Medical Need • What is the benefit of the proposed intervention?  Benefit • What am I worried about?  Risk • What can I do to mitigate/monitor those concerns?  Risk Management
  • 35. Benefit-Risk in PDUFA V: FDA’s Commitments • Publish a 5-year plan that describes FDA’s approach to implement a structured benefit-risk framework by December 31, 2012 and begin execution by September 30, 2013 • Conduct two public workshops on benefit-risk from the regulator’s perspective that will begin by December 31, 2013 • Develop an evaluation plan to ascertain the impact of the benefit-risk framework • Revise review templates, decision memo templates and MaPPs as appropriate to incorporate FDA’s approach 35
  • 37. Guidance for Industry and FDA Staff: Factors to Consider When Making Benefit-Risk Determinations in Medical Device Premarket Approval and De Novo Classifications Date of Publication: March 27, 2012
  • 38. Purpose • To identify and clarify the factors FDA considers when making benefit-risk determinations during our approval decisions • To facilitate transparency, consistency, and predictability of the premarket review process for benefit-risk assessments
  • 39. Background • §513(a) of the Federal Food, Drug & Cosmetic Act – FDA determines if PMA applications provide “reasonable assurance of safety and effectiveness” by “weighing any probable benefit to health from the use of the device against any probable risk of injury or illness from such use,” among other relevant factors – FDA reviews valid scientific evidence to determine if data support claims made by Sponsor • Clinical data • Non-clinical data • Intended use/Indications for Use – For de novo classification petitions [513(f)(2)], FDA also makes a classification determination after consideration of all risks and whether they can appropriately be mitigated through general and/or special controls.
  • 40. Development Process • Contributing Team: – Benefit-risk working group from CDRH • Chronology of Key Milestones: – August 2011: Draft issued for public comment – November 15, 2011: Docket closed – Final published on March 27, 2012
  • 41. Content of Guidance • Addresses factors FDA considers important as part of the benefit-risk determination • Provides examples of how FDA uses the factors in making benefit-risk determinations • Includes worksheet, which reviewers will use in making benefit-risk determinations as part of the premarket process
  • 42. Factors FDA Considers When Making Benefit-Risk Determinations
  • 43. Factors FDA Considers When Making Benefit-Risk (B-R) Determinations • Factors that characterize benefit • Factors associated with risks • Additional factors to be considered
  • 44. Benefit factors in B-R determinations • Type of benefit – device’s impact on clinical management, patient health, and patient satisfaction in the target population, • Magnitude of the benefit(s) – change in subjects’ condition or clinical management
  • 45. Benefit factors in B-R determinations (cont.) • Probability of experiencing one or more benefit(s) – which patients may experience a benefit? • Duration of effect – A treatment whose benefit lasts longer is more desirable than a treatment that must be repeated.
  • 46. Risk factors in B-R determinations • Severity, types, number and rates of harmful events – device-related serious adverse events – device-related non-serious adverse events – procedure-related complications • Probability of harmful event • Duration of harmful events • Risk from false-positive or false-negative results for diagnostics
  • 47. Other Factors in B-R Determinations (Cont’d) • Availability of alternative treatments or diagnostics • Risk mitigation • Postmarket data • Novelty of technology addressing an unmet medical need

Hinweis der Redaktion

  1. AC Meetings - , where they offer the patient perspective, ask questions, and give comments to assist the committee in making recommendations. Consultants – assist the clinicians and scientists who review data submitted to determine whether the product’s benefits outweigh the potential risks
  2. Webiste: Medical Product Development 101 Library of Written & Multimedia Educational Resources Updates on FDA actions, upcoming meetings, opportunities to comment (i.e. dockets) Interactivity
  3. Today I am going to discuss the guidance document entitled, Factors to Consider When Making Benefit-Risk Determinations in Medical Device Premarket Approval and De Novo Classifications. This guidance document was published in its final form on March 27, 2012.
  4. This guidance document was developed to provide greater clarity for FDA reviewers and Industry regarding the factors FDA considers when making benefit-risk assessments in PMA applications and de novo premarket submissions for medical devices. FDA believes that the appropriate application of the factors listed in this guidance will help FDA believes that the full implementation of the guiding factors described in this guidance will facilitate transparency, consistency, and predictability of the premarket review process.
  5. This guidance addresses two main avenues for a sponsor to gain market entry for a new medical device: PMAs and de novo petitions. Under Section 513(a) of the Federal Food, Drug & Cosmetic Act, or the “FD&C Act,” FDA determines whether PMA applications provide a “reasonable assurance of safety and effectiveness” by “weighing any probable benefit to health from the use of the device, against any probable risk of injury or illness from such use.” Other factors also apply. FDA reviews the valid scientific evidence submitted in the application to determine whether it supports the intended use of the device. This evidence may come from a range of information sources, such as clinical data, animal studies, and non-clinical data. Scientific data reviewed by FDA includes clinical studies, non-clinical studies, and the intended use of the device. Wherever eligible, the Sponsor may submit a de novo classification petition in order to gain market entry for a new medical device. For de novos, FDA considers the risk profile of a device to make a classification determination for the device under Section 513(a)(1) of the FD&C Act. FDA makes a risk-based classification determination after consideration of all risks of the device, such that the risks may appropriately be mitigated through the general and/or special controls. A complete benefit-risk assessment is then carried out as part of the assessment of device's safety and effectiveness. . Devices that reach the market via a de novo classification petition serves as predicates for future submissions through the 510(k) program.
  6. This guidance was developed by the benefit-risk working group, made up of FDA Staff from the Office of Device Evaluation (ODE), the Office of Surveillance and Biometrics (OSB), the Office of In Vitro Diagnostics (OIVD), and the Office of Science and Engineering Laboratories (OSEL). This group’s effort led to the issuance of the draft guidance in August 2011, which was published and available for public comment The comment period was open until November 15, 2011, at which time the docket closed and comments were collated, addressed, and incorporated as appropriate into the final guidance. The final version of the guidance was published on March 27, 2012.
  7. The guidance document addresses and defines multiple factors FDA considers important in making benefit-risk determinations. Several examples are included within the guidance document to demonstrate how the factors are applied in making benefit-risk determinations. A worksheet is provided at the end of the guidance. This worksheet is intended to capture how reviewers consider the factors described within the guidance when making benefit-risk assessments.
  8. The factors I will now describe are considered within the intended use of the device when assessing the benefit-risk profile. I will present each factor, followed by examples of questions the FDA reviewers consider for each factor described. The guidance document contains a worksheet that provides additional questions for each factor.
  9. This guidance characterizes the benefit-risk determinations into three primary categories: the factors that characterize the benefits of the device; the factors associated with the risks of the device; and, finally, additional factors that FDA considers while weighing the probable benefits and risks.
  10. The guidance document helps FDA reviewers assess the extent of the probable benefit using several factors, including the type of benefits, the magnitude of the benefits, the probability of the patient experiencing one or more of the benefits, and the duration of the benefits. These factors are considered individually and in the aggregate. The type of benefit can be measured directly, or by using endpoints or surrogate endpoints. Knowing what primary endpoints or surrogate endpoints were evaluated and what value physicians and patients place on the benefit are important considerations. Additionally, understanding the impact of the benefit to public health may be helpful for therapeutic devices and early diagnosis of a disease. FDA often assesses magnitude of benefits along a scale or according to specific endpoints or criteria, or by evaluating whether a pre-identified health threshold was achieved.
  11. Another measure of benefit is the probability of the patient experiencing one or more benefits. Based on the data provided, does the study predict the which patients will experience a benefit or the probability that a patient will experience a benefit. Understanding the variation in public health benefits for different subgroups is important because different patient subgroups may experience different benefits or different levels of the same benefit. A final measure of benefit is the duration of the effect of the benefit. A treatment whose benefit lasts longer is more desirable than a treatment that must be repeated to preserve the benefit.
  12. FDA determines the Risk profile of the device by taking into the severity, types, number and rates of harmful events; the probability of a harmful event; the duration of each harmful event; and the risk from false positive or false negative results, as in the case of diagnostic devices. These factors are considered individually and in the aggregate. The severity, types, number and rates of harmful events refers to events that result directly from the patient’s use of the device. Examples of questions considered by the reviewer include: what are the device-related serious adverse events? What are the device-related non-serious adverse events? And, what other procedure-related or indirect complications to which a patient be subjected? The probability of a harmful event can be assessed by understanding what the probability is that a patient in the intended population will experience a harmful event. Reviewers also consider the question, “are patients willing to accept the probable risk of the harmful event, in exchange for the probable benefits of the device?”
  13. Another factor FDA considers when making benefit-risk determinations is the availability of alternative treatments or diagnostics. FDA takes into account how effective these other treatments are and the risks they pose to patients. The use of risk mitigation strategies, when appropriate, can minimize the probability of a harmful event occurring. The reviewer will determine if the sponsor has identified ways to mitigate risks through product labeling or education programs. For in vitro diagnostics, risks may be mitigated by the use of complementary diagnostic tests.