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MRKMerck Sharp & Dohme LLCRunning, no new patients

Efficacy, Immunogenicity and Safety of V503 in Chinese Women Aged 20-45 Years (V503-023)

Papillomavirus Infections

2Calmworry score, out of 100

No strong warning signs right now. The score counts warning signs; it is not a prediction.

Why this score

  • 5 insiders sold shares within a month

    Since Aug 13, 2026 · was worth 5, fading over time

    +1.9
Worry score2

Score over time

Stage
Phase 3
Patients
6,000 (planned)
Started
Jun 26, 2019
Main results expected
Mar 31, 2028
Fully finished
Nov 30, 2029
Results posted
not yet

What counts as success

The trial's main goal(s), called the “primary outcome.”

  • Stage I: Combined Incidence of HPV 31-, 33-, 45-, 52-, and 58-related 12-month Persistent Infection

    Measured over: 1 month post vaccination 3 (Month 7) up to Month 30

  • Stage I: Geometric Mean Titers to HPV Types 6, 11, 16, and 18 Antibodies

    Measured over: 1-month post vaccination 3 (Month 7)

  • Stage I: Percentage of Participants Who Report at Least 1 Solicited Injection-site Adverse Event

    Measured over: up to 8 days post any vaccination

  • Stage I: Percentage of Participants Who Report at Least 1 Solicited Systemic Adverse Event

    Measured over: up to 30 days post any vaccination

  • Stage I: Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)

    Measured over: Day 1 up to approximately Month 30

  • Stage II: Combined Incidence of HPV 31-, 33-, 45-, 52-, and 58-related CIN 2/3, AIS, and cervical cancer

    Measured over: Month 7 up to Month 90

  • Stages I/II: Percentage of Participants Who Experience at Least 1 Serious Adverse Event (SAE)

    Measured over: Day 1 up to approximately Month 90

Changes Tremor has spotted

No changes since Tremor started watching this trial.
Show details (technical version)

Score inputs

  • insider_selling_cluster: base 5, now 1.9, since 2026-08-13, fades (half-life)

Raw record changes

  • none yet

Trial ID NCT03998254 · record last updated 2026-09-01 · checked 2026-11-09 15:47 UTC

See the official record on ClinicalTrials.gov (NCT03998254) ↗