CT.gov Sponsor Ghost Repeaters
2026-03-29 | full-registry ct.gov audit | plots, figures, and e156 bundle
Series
IndustrySponsor-ClassPhaseStructural MissingnessEvidence VisibilityCompletion CohortCondition HiddennessSponsor ConcentrationRule-Era ReportingPublication UndercountOncology HiddennessCardiovascular HiddennessMetabolic HiddennessEnrollment-SizeGeography-ScaleDesign-PurposeCompletion-DelayTrial-ArchitectureIntervention-TypeCountry ReportingStopped-TrialOutcome-DensityActual-FieldUs-Versus-GlobalModality-SponsorCountry-ConditionDisease-GeographyCondition-SponsorCountry-SponsorUs-Versus-Ex-UsIndustry-FamilyRisk-Adjusted HiddennessOverdue Results ClockPublication Index GapProbable Act/Fdaaa DebtSponsor Excess WatchlistCountry Excess WatchlistCondition Excess WatchlistBlack-Box TrialsStrict-Proxy RepeatersSponsor GhostsCountry GhostsCondition GhostsBlack-Box SponsorsStrict Black-Box
Sponsor Ghosts Dashboard

Ghost-protocol sponsor repeaters differ from the broader missing-results league table

Cairo University leads the sponsor ghost table, Sanofi and Bayer remain close behind, Ain Shams University also stays prominent, and several large industry sponsors combine high ghost excess with large black-box stock.

Open dashboardRead E156 paperProtocolSeries hub
Ghost excess
Ghost counts
Black-box stock
Named sponsors

Dashboard

Open dashboard at rootRead E156 micro-paperOpen protocolOpen series hub

Cairo University leads the sponsor ghost table, Sanofi is close behind, Bayer remains prominent, and several top ghost repeaters also carry large black-box stock.

How to read the dashboard
Cairo ghost
228
Excess stock
Sanofi ghost
219
Excess stock
Bayer box
462
Black-box stock
Boehringer box
755
Largest black-box stock
Top sponsor ghost excess
GHOST EXCESSTop sponsor excess ghost-protocol countsCairo U228Sanofi219Bayer179Ain Shams165Boehringer127BMS122University Hospital, Ghent89Astellas87Assiut87Yonsei University82
Cairo University, Sanofi, and Bayer lead the deeper-silence sponsor table.
This is not the same ordering seen in the adjusted no-results watchlist.
Top raw sponsor ghost counts
GHOST COUNTSRaw ghost-protocol counts by sponsorGlaxoSmithKline815Boehringer799Mayo776Cairo U739NCI713Pfizer676AstraZeneca643M.D. Anderson Cancer Center587Sanofi582Novartis Pharmaceuticals521
Large industry portfolios remain prominent even when the table is sorted by raw ghost counts instead of adjusted excess.
That gives the sponsor-ghost project both rate and stock context.
Ghost repeaters and black-box stock
BLACK-BOX STOCKBlack-box study counts among the top sponsor ghost repeatersCairo U129Sanofi340Bayer462Ain Shams123Boehringer755BMS392University Hospital, Ghent170Astellas105Assiut142Yonsei University276
Several of the biggest ghost repeaters also hold substantial black-box stock.
That marks a deeper silence state than ghosting alone.
Read Across Projects

Across The Series

Each project isolates a different dimension of registry opacity, but the point is the contrast between them, not a single leaderboard.

Industry
Industry project

Industry project from the CT.gov hiddenness series.

Sponsor-Class
Sponsor-class project

Sponsor-class project from the CT.gov hiddenness series.

Phase
Phase project

Phase project from the CT.gov hiddenness series.

Structural Missingness
Structural missingness project

Structural missingness project from the CT.gov hiddenness series.

Evidence Visibility
Evidence visibility project

Evidence visibility project from the CT.gov hiddenness series.

Completion Cohort
Completion cohort project

Completion cohort project from the CT.gov hiddenness series.

Condition Hiddenness
Condition hiddenness project

Condition hiddenness project from the CT.gov hiddenness series.

Sponsor Concentration
Sponsor concentration project

Sponsor concentration project from the CT.gov hiddenness series.

Rule-Era Reporting
Rule-era reporting project

Rule-era reporting project from the CT.gov hiddenness series.

Publication Undercount
Publication undercount audit

Publication undercount audit from the CT.gov hiddenness series.

Oncology Hiddenness
Oncology hiddenness project

Oncology hiddenness project from the CT.gov hiddenness series.

Cardiovascular Hiddenness
Cardiovascular hiddenness project

Cardiovascular hiddenness project from the CT.gov hiddenness series.

Metabolic Hiddenness
Metabolic hiddenness project

Metabolic hiddenness project from the CT.gov hiddenness series.

Enrollment-Size
Enrollment-size project

Enrollment-size project from the CT.gov hiddenness series.

Geography-Scale
Geography-scale project

Geography-scale project from the CT.gov hiddenness series.

Design-Purpose
Design-purpose project

Design-purpose project from the CT.gov hiddenness series.

Completion-Delay
Completion-delay project

Completion-delay project from the CT.gov hiddenness series.

Trial-Architecture
Trial-architecture project

Trial-architecture project from the CT.gov hiddenness series.

Intervention-Type
Intervention-type project

Intervention-type project from the CT.gov hiddenness series.

Country Reporting
Country reporting project

Country reporting project from the CT.gov hiddenness series.

Stopped-Trial
Stopped-trial project

Stopped-trial project from the CT.gov hiddenness series.

Outcome-Density
Outcome-density project

Outcome-density project from the CT.gov hiddenness series.

Actual-Field
Actual-field project

Actual-field project from the CT.gov hiddenness series.

Us-Versus-Global
US-versus-global project

US-versus-global project from the CT.gov hiddenness series.

Modality-Sponsor
Modality-sponsor project

Modality-sponsor project from the CT.gov hiddenness series.

Country-Condition
Country-condition project

Country-condition project from the CT.gov hiddenness series.

Disease-Geography
Disease-geography project

Disease-geography project from the CT.gov hiddenness series.

Condition-Sponsor
Condition-sponsor project

Condition-sponsor project from the CT.gov hiddenness series.

Country-Sponsor
Country-sponsor project

Country-sponsor project from the CT.gov hiddenness series.

Us-Versus-Ex-Us
US-versus-ex-US project

US-versus-ex-US project from the CT.gov hiddenness series.

Industry-Family
Industry-family project

Industry-family project from the CT.gov hiddenness series.

Risk-Adjusted Hiddenness
Risk-adjusted hiddenness

Risk-adjusted hiddenness from the CT.gov hiddenness series.

Overdue Results Clock
Overdue results clock

Overdue results clock from the CT.gov hiddenness series.

Publication Index Gap
Publication index gap

Publication index gap from the CT.gov hiddenness series.

Probable Act/Fdaaa Debt
Probable ACT/FDAAA debt

Probable ACT/FDAAA debt from the CT.gov hiddenness series.

Sponsor Excess Watchlist
Sponsor excess watchlist

Sponsor excess watchlist from the CT.gov hiddenness series.

Country Excess Watchlist
Country excess watchlist

Country excess watchlist from the CT.gov hiddenness series.

Condition Excess Watchlist
Condition excess watchlist

Condition excess watchlist from the CT.gov hiddenness series.

Black-Box Trials
Black-box trials

Black-box trials from the CT.gov hiddenness series.

Strict-Proxy Repeaters
Strict-proxy repeaters

Strict-proxy repeaters from the CT.gov hiddenness series.

Country Ghosts
CT.gov Country Ghost Watchlist

Country-linked ghost watchlist showing where deeper silence remains most elevated above expectation.

Condition Ghosts
CT.gov Condition Ghost Watchlist

Condition-family ghost watchlist showing which therapeutic portfolios are ghosted well above expectation.

Black-Box Sponsors
CT.gov Black-Box Sponsor Repeaters

Named-sponsor black-box tables showing where no-results, no-paper, no-description silence concentrates.

Strict Black-Box
CT.gov Strict-Core Black-Box

Strict U.S.-nexus black-box tables showing where the regulated-looking deep-silence core still concentrates.

Source on GitHub | Project home | Dashboard