guidance for industry establishing pregnancy registries pregnancy registry working group pregnancy...
TRANSCRIPT
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Guidance for Industry Establishing Pregnancy Registries
Guidance for Industry Establishing Pregnancy Registries
Pregnancy Registry Working Group
Pregnancy Labeling TaskforceMarch, 2000
Evelyn M. Rodriguez M.D., M.P.H.
OPDRA, CDER, FDA
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OutlineOutline
Why A Guidance Document?Why A Guidance Document? What is a pregnancy registry?What is a pregnancy registry? Purpose of a pregnancy registry protocol.Purpose of a pregnancy registry protocol. Registry study design.Registry study design.
RecruitmentRecruitment Reporting sourceReporting source Follow-upFollow-up Comparison groupsComparison groups Data analysisData analysis Reporting resultsReporting results
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Why a Pregnancy Registry Guidance Document?
Why a Pregnancy Registry Guidance Document?
To provide useful data to health care To provide useful data to health care providers in caring for their patientsproviders in caring for their patients
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What is a Pregnancy Registry?What is a Pregnancy Registry?
Could have many designs Often hypothesis generating Hypothesis testing Design depends on the hypothesis and outcomes
of concern Ideally, prospective enrollment of subjects Actively collects information for providing
scientifically based outcome data
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What is the Purpose of a Pregnancy Registry?
What is the Purpose of a Pregnancy Registry?
Determine risks associated with drug use during pregnancyMeasurement of this riskDetermine risk factors associated for
adverse outcomeCould provide margins of
reassurance regarding lack of risk
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Limitations of Current Data SourcesLimitations of Current Data Sources
Population-based surveillance systems - no linkage of maternal exposures and fetal outcome is available
Spontaneous Reports - bias in reporting and no incidence estimate available
Clinical Trials - Lack of meaningful data
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What is the Purpose of aPregnancy Registry Protocol?
What is the Purpose of aPregnancy Registry Protocol?
To assure quality & validity of data elements collected
To assure documentation and consistency of research methods
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What are Pregnancy Registries?
What are Pregnancy Registries?
Observational (non-experimental) studies that actively enroll subjects
Registration is ideally prospectiveEarly in pregnancy Drug exposure prior to or during
pregnancy
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What are Pregnancy Registries? (continued)
What are Pregnancy Registries? (continued)
Determine rates of outcome among mothers exposed to drug
Comparison Groups Known background population rates Concurrently enrolled unexposed mothers
with or without underlying disease of interest
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Pregnancy Registry StudiesPregnancy Registry Studies
Baseline information is collected at enrollment
Prospective subjectsSubject enrollment during pregnancy with
unknown fetal outcome to provide risk estimate
Retrospective subjects - case seriesSubject enrollment after abnormal fetal
results or adverse infant outcome are known
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Considerations for Design of a Pregnancy Registry
Considerations for Design of a Pregnancy Registry
What is the feasibility of successfully completing the study?
Anticipate patterns of product use relative to fetal development
Definition and identification of outcomes
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What Products are Good Candidates?
What Products are Good Candidates?
Products used frequently where inadvertent exposures are apt to occur
Products initiated or continued during pregnancy as therapy
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What Products are Good Candidates? (continued)
What Products are Good Candidates? (continued)
When available information suggests a need: Pharmacologic class Animal reproductive data Structure/activity relationships Human case reports
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When in a Medical Product’s Lifetime should a Registry be Established?
When in a Medical Product’s Lifetime should a Registry be Established?
A pregnancy registry should be established when the need is perceived Most likely at the time of approval Possibly with a new indication When a postmarketing signal is
observed
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What are the Elements to Consider in the Pregnancy Registry Design?
What are the Elements to Consider in the Pregnancy Registry Design?
Protocol should assure consistency in data collection and analysis
Consult FDA in design
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Registry Design: ProtocolRegistry Design: Protocol
Background Section Animal reproductive toxicity studies Relevant pharmacologic and toxicolgic
studies Any human experience from spontaneous
reports or earlier human studies Estimate of risk in human pregnancy
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Registry Design: Research Methods
Registry Design: Research Methods
Description of Research Methods Patient Recruitment - Active enrollment
strategies and follow-up plans Draft of registry announcements of
informational pieces containing contact number, website
Product label containing contact information
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Research Design: RecruitmentResearch Design: Recruitment
Announcements may appear: Professional journals Women’s magazines Professional and maternal/infant advocacy group
newsletters Internet sites Mailings to specialists Lectures Informational booths at professional meetings
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Research Design: Recruitment(continued)
Research Design: Recruitment(continued)
However, unless specifically approved for use during pregnancy, any recruitment effort should not promote the use of the product during pregnancy
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Research Design: Recruitment(continued)
Research Design: Recruitment(continued)
All product specific promotional materials must be submitted to FDA at the time of first use
Review prior to use not necessary UNLESS product was approved under expedited approval regulations
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Research Design: Recruitment(continued)
Research Design: Recruitment(continued)
Protocol should include scripts that will be used in response to registry announcements and to recruit subjects
To increase awareness, sponsors are encouraged to work with FDA, CDC, Organization of Teratogen Information Services, and other organizations
FDA website will list known pregnancy registries
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Research Design: Reporting Source
Research Design: Reporting Source
Sources of baseline and follow-up information SubjectsHealth Care Providers Both
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Research Design: Reporting Source-Subjects
Research Design: Reporting Source-Subjects
May minimize loss to follow-upFacilitates multiple follow-up
contacts and enhance infant data collection
Facilitates informed consentMay need medical record validationMay be more expensive due to more
frequent and extensive follow-up
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Research Design: Reporting Source - Health Care ProvidersResearch Design: Reporting
Source - Health Care Providers
Health Care ProvidersConvenient, good source of medical
dataEconomical, requires fewer contactsData collection on maternal and
infant events may be incompleteLoss to follow-up may be substantial
lack of motivation
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Research Design - Patient Follow-up
Research Design - Patient Follow-up
Patient follow-up: Describe follow-up procedures in protocol Update drug exposure & risk factor information Obtain results of any diagnostic tests Collect information on spontaneous abortions, elective
terminations and the medical reasons for these events Consistent, similar follow-up for all women to avoid
bias Specify criteria to define subjects that are pending and
those lost to follow-up
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Research Design: Study OutcomesResearch Design: Study Outcomes
Case definitions for all outcomes: maternal, labor & delivery, major categories of anomalies
Confirm outcomes: autopsy & pathology results, birth and death infant records, expert evaluation of infant, long-term follow-up
Feasibility of obtaining outcome data from different sources
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Research Design: MiscellaneousResearch Design: Miscellaneous
Define outcomes of concern and hypothesis Define characteristics of the exposed
population Define biologic impact of the treated medical
condition(s) Describe what is known about drug exposure
during pregnancy Anticipate likelihood of discontinuing
treatment upon diagnosis of a pregnancy
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Research Design: ComparatorsResearch Design: Comparators
Selection of unexposed comparison group(s):Matching on medical conditionExposure to another productMultiple comparison groups
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Research Design: Statistical Considerations
Research Design: Statistical Considerations
Adequate sample sizeEstimate rates of suspected outcomes of scientific interest
Estimate power
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Research Design: Data Analysis Research Design: Data Analysis
Separate prospective and retrospective casesPregnancy outcome, fetal abnormalitiesDescribe subjects lost to follow-up, and
compare to study subjects Calculate incidence point estimate and 95%
confidence intervalCompare to population background rates
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Regulatory ReportingRegulatory Reporting
Registry reports are considered information derived during active solicitation of information from patients.
Should be handled as safety information obtained from a study (1997 FDA Interim Report Guidance)
FDA Postmarketing Safety Reporting Regulations are in the process of being updated.
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Additional InformationAdditional Information
ReferencesSuggested Data Elements for
Pregnancy RegistriesSample Size Determinations by
Adverse Pregnancy Outcomes
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