Panel Discussion: HT HTE A Across oss Di Diverse se P - - PowerPoint PPT Presentation

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Panel Discussion: HT HTE A Across oss Di Diverse se P - - PowerPoint PPT Presentation

Panel Discussion: HT HTE A Across oss Di Diverse se P Population ons MODERATOR: MARJORIE R. JENKINS, MD MEDHP FACP DIRECTOR, SCIENTIFIC PROGRAMS U.S. FOOD AND DRUG ADMINISTRATION OFFICE OF WOMENS HEALTH Session Outline Moderator


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Panel Discussion: HT HTE A Across

  • ss Di

Diverse se P Population

  • ns

MODERATOR:

MARJORIE R. JENKINS, MD MEDHP FACP DIRECTOR, SCIENTIFIC PROGRAMS U.S. FOOD AND DRUG ADMINISTRATION OFFICE OF WOMEN’S HEALTH

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Session Outline

  • Moderator Presentation

 FDA Overview  Panel Goals and Objectives  Panelists  Review Panel Subtopics

  • PK/PD
  • Biologics
  • Devices
  • Drugs/Aging
  • Sex as aa Biological Variable
  • Race/Ethnicity and Disease Prevalence
  • Panelists Remarks
  • Moderated Q&A
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FD FDA Mission

To protect the public health by ensuring the safety, efficacy, and security of drugs, products, and medical devices To protect the safety of our nation's food supply, cosmetics, and products that emit radiation To regulate the manufacturing, marketing, and distribution of tobacco products to protect the public health

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FDA

National Center for Toxicological Research (NCTR) OC (OWH, OMH) Center for Tobacco Products (CTP) Center for Food Safety and Applied Nutrition (CFSAN) Center for Devices and Radiologic Health (CDRH) Center for Drug Evaluation and Research (CDER) Center for Biologics Evaluation and Research (CBER)

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Research Environments

Discovery Product Development Approval/Post market NIH FDA Industry

Knowledge Transfer and Application Occurs Across Environments

Other Research Entities

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FDA and Regulatory Science

The science of developing new tools, standards, and approaches to assess the safety, efficacy, quality, and performance of FDA regulated products.

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All Differences Are Not Equal

FDA is interested in patient or population characteristics that might impact the safety or effectiveness of a product such as:

Sex Age Race/Ethnicity Disease Stage Co-Morbid Conditions Disability

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Zolpidem

Sedative hypnotic Approved in 1995 Maximum approved dose 10mg in adults Early PK studies revealed a 40% sex difference in metabolism Is the PK difference clinically meaningful?

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Today’s Panel Over erarch ching Goal g Goal

HT HTE related ed to d dem emog

  • graphic g

groups a and pharmacot

  • therapy p

principles.

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Heterogeneity of Treatment Effect

Optimal Conditions Magnitude of Effect Differences Across Subjects Beneficial Effects Adverse Effects Overlapping Influences

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PK/PD Biologics Devices: Pediatrics Drugs: Aging Sex /Gender Race/Ethnicity

Panel Subtopics

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Panel Objectives: Challenge Questions

  • 1. Why is it critical to account for clinical pharmacology when interpreting

and mitigating heterogeneity in treatment effects?

  • 2. What are some challenges that biologics present when interpreting

and mitigating heterogeneity in treatment effect?

  • 3. How long can a neonate tolerate a heart rate of 220 beats per minute?
  • 4. How does aging mechanistically contribute to heterogeneity of

treatment effects?

  • 5. Why is it critical to account for biological sex in all analyses of drug

effects?

  • 6. Can clinical trials address the realities of disease prevalence data?
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Raj Madabushi, PhD

Team Lead, Guidance and Policy Team Office of Clinical Pharmacology, OTS/CDER/FDA

Barbara Buch, MD

Associate Director for Medicine Center for Biologics Evaluation & Research, FDA

Vasum Peiris, MD MPH, FAAP, FACC, FASE

Chief Medical Officer – Pediatrics and Special Populations Center for Devices and Radiological Health, FDA

Victor Crentsil, MD MHS FCP

Office of Drug Evaluation III Office of New Drugs, Center for Drug Evaluation and Research, FDA

Virginia Miller, PhD

Professor of Physiology and Surgery Mayo Clinic, Rochester MN

Jonca Bull, MD:

VP Ophthalmology, within Global Product Development VP Consulting, PPD, LLC

PANELISTS

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Pharmacokinetics & Pharmacodynamics

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Un Under erstanding R Res esponse Variability Cl Clinical Phar armacology P Perspective

S-M Huang, R Temple, CPT, September 2008

Exposure Response

Response

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Vaccine Response

Co- morbidities Host Genetics Host Immune Status Age Nutritional Status

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4962729/pdf/khvi-12-01-1093263.pdf

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Devices: Pediatric

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It is a Medical Device if it:

  • Diagnoses, Cures, Mitigates, Treats or Prevents a Disease or

Condition, or

  • Affects the Function or Structure of the Body, and
  • Does Not Achieve Intended Use Through Chemical Action,

and

  • Is Not Metabolized
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Drugs: Aging

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What is a Drug?

The FD&C Act defines drugs, in part: by their intended use, as "articles intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease" "articles (other than food) intended to affect the structure or any function of the body of man or other animals"

Primary Source: FD&C Act, sec. 201(g)(1)

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Example: P PORTRAZZA ZA (nec ecitumumab)

Approval date: November 24, 2015

  • FDA Drug Trial Snapshots:
  • The risk of overall side effects was similar in patients below and above 65 years of
  • age. The risk of venous thromboembolism was higher in patients age 70 and over

compared to those who were younger than age 70.

  • Drug Label (PORTRAZZA (necitumumab) injection, for intravenous use Initial U.S.

Approval: 2015):

  • 8.5 Age: The risk of overall side effects was similar in patients below and above 65

years of age. The risk of venous thromboembolism was higher in patients age 70 and over compared to those who were younger than age 70.

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Sex as a Biological Variable

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  • Environmental
  • Society
  • Spectrum

– Masculine/Feminine – Man/Woman – Both – Neither

  • Chromosomal
  • Physiological
  • Typically binary

– Male/Female

SEX is a BIOLOGICAL VARIABLE

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GENDER is a a SOCIAL CONSTRUCT

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How FDA LOOKS FOR SEX DIFFERENCES

PRE- CLINICAL STUDIES

Using Both Male and Female Animals

DATA ON SAFETY AND EFFECTIVENESS

for Women and Men (required since 1998)

SEX ANALYSES

Almost Always Done

POST-MARKETING MONITORING AND SAFETY ALERTS

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EDUCATION SCIENCE OUTREACH

Office of Women’s Health

Office of Women’s Health

OWH achieves its mission through the foundational principle that Sex as a Biological Variable (SABV) should be factored into research design, analysis, reporting and education.

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Presented at FDA OWH Science Day (2010)

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Examples es o

  • f dev

evices with s sex d differ eren ences es in outcomes es

HeartMate II VAD Birmingham Hip Resurfacing System

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Race/Ethnicity, Clinical Trials & Disease Prevalence

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Source: https://www.cdc.gov/nchs/hus/index.htm Jonca Bull. MD I PPD

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In order for outcomes from RCTs to be generalizable to the real world, greater consideration needs to be taken to include patient populations that are more representative of those awaiting treatment in the clinical setting. (Gray et al. 2017) Examining specific subgroups can also deepen our understanding of age-, sex-, and race/ethnicity-based differences in prognosis and response to therapy. (Pang et al. 2016)

Gray et al. 2017. Journal of Comparative Effectiveness Research. 6(1): 65-82. Pang et al. 2016. Journal of Clinical Oncology. 34(33): 3992-3999.

Why Is Subgroup Analysis Important?

Che Smith PhD I FDA Panel I OSSD Annual Meeting I 2017

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Th Thank y you

  • u