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Condition (MeSH)

Keratosis

ClinicalTrials.gov lists 532 trials for Keratosis or a narrower condition beneath it. LEO Pharma has the most among industry and government lead sponsors, with 33.

MeSH D007642 Skin and Connective Tissue Diseases C17
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Phase 1 Phase 1 58 Phase 1/2 Phase 1/2 17 Phase 2 Phase 2 88 Phase 2/3 Phase 2/3 10 Phase 3 Phase 3 88 Phase 4 Phase 4 50 Not applicable Not applicable 129 Observational Observational 90 Phase 1 Phase 1 58 Phase 1/2 Phase 1/2 17 Phase 2 Phase 2 88 Phase 2/3 Phase 2/3 10 Phase 3 Phase 3 88 Phase 4 Phase 4 50 Not applicable Not applicable 129 Observational Observational 90

Trials per phase

1 more section with rows

28 of the 532 trials are tagged with Keratosis itself; the rest are tagged with a narrower condition beneath it.

Get the Keratosis report as a PDF

The PDF carries up to 50 rows of each section, where the page shows the first few, with the sources listed. Enter a work email and confirm it from the message we send, and the report follows by email.

When did Keratosis trials start? (32)

Shown in this order: most recent first, 1990 onwards. 2026 is partial: trials registered with a 2026 start date so far, not a full year. 1 trial is registered to start in 2027 or later, and not listed here.

Trials over time, by phase

  • Phase 1
  • Phase 1/2
  • Phase 2
  • Phase 2/3
  • Phase 3
  • Phase 4
  • Not applicable
  • Observational

Top of scale: 39

1992: 1 trials (Observational 1) 1994: 1 trials (Observational 1) 1996: 2 trials (Phase 3 2) 1997: 1 trials (Phase 2 1) 1999: 1 trials (Observational 1) 2000: 1 trials (Observational 1) 2001: 2 trials (Phase 2/3 1, Phase 2 1) 2002: 1 trials (Phase 2 1) 2003: 5 trials (Observational 1, Phase 4 1, Phase 3 2, Phase 2 1) 2004: 4 trials (Observational 1, Phase 2 2, Phase 1 1) 2005: 13 trials (Observational 2, Not applicable 2, Phase 4 4, Phase 3 1, Phase 2 3, Phase 1/2 1) 2006: 13 trials (Observational 1, Not applicable 2, Phase 4 1, Phase 3 4, Phase 2/3 1, Phase 2 4) 2007: 11 trials (Not applicable 2, Phase 4 1, Phase 3 3, Phase 2 4, Phase 1 1) 2008: 23 trials (Observational 5, Not applicable 4, Phase 4 2, Phase 3 7, Phase 2 2, Phase 1/2 1, Phase 1 2) 2009: 19 trials (Observational 3, Not applicable 1, Phase 4 1, Phase 3 6, Phase 2 5, Phase 1 3) 2010: 16 trials (Not applicable 4, Phase 4 2, Phase 3 7, Phase 2/3 1, Phase 2 1, Phase 1/2 1) 2011: 19 trials (Not applicable 4, Phase 4 2, Phase 3 4, Phase 2 5, Phase 1 4) 2012: 20 trials (Observational 2, Not applicable 6, Phase 4 2, Phase 3 4, Phase 2 2, Phase 1 4) 2013: 35 trials (Observational 4, Not applicable 10, Phase 4 3, Phase 3 5, Phase 2 3, Phase 1/2 4, Phase 1 6) 2014: 34 trials (Observational 6, Not applicable 8, Phase 4 1, Phase 3 3, Phase 2 8, Phase 1/2 3, Phase 1 5) 2015: 39 trials (Observational 5, Not applicable 5, Phase 4 7, Phase 3 12, Phase 2 5, Phase 1 5) 2016: 32 trials (Observational 3, Not applicable 13, Phase 4 2, Phase 3 5, Phase 2 6, Phase 1 3) 2017: 32 trials (Observational 7, Not applicable 5, Phase 4 5, Phase 3 4, Phase 2/3 1, Phase 2 8, Phase 1/2 1, Phase 1 1) 2018: 20 trials (Observational 3, Not applicable 7, Phase 4 3, Phase 3 3, Phase 2 3, Phase 1 1) 2019: 18 trials (Observational 2, Not applicable 8, Phase 4 1, Phase 3 1, Phase 2 3, Phase 1 3) 2020: 19 trials (Observational 5, Not applicable 9, Phase 3 2, Phase 2/3 1, Phase 2 1, Phase 1 1) 2021: 18 trials (Observational 5, Not applicable 3, Phase 4 3, Phase 3 1, Phase 2 2, Phase 1/2 2, Phase 1 2) 2022: 25 trials (Observational 7, Not applicable 8, Phase 4 1, Phase 3 4, Phase 2/3 1, Phase 2 1, Phase 1 3) 2023: 25 trials (Observational 6, Not applicable 4, Phase 4 5, Phase 3 1, Phase 2/3 2, Phase 2 3, Phase 1/2 2, Phase 1 2) 2024: 35 trials (Observational 10, Not applicable 11, Phase 4 2, Phase 3 1, Phase 2 7, Phase 1 4) 2025: 16 trials (Observational 2, Not applicable 7, Phase 3 3, Phase 2/3 1, Phase 2 1, Phase 1 2)

Trials registered with a start date in each year, 1990 onward, stacked by phase (complete years only; the current partial year is in the table's notes). The table below lists the same counts, most recent years first.

Trials started per year
Year Trials started
2026 (partial year) 26
2025 16
2024 35
2023 25
2022 25
2021 18
2020 19
2019 18
2018 20
2017 32

Forecast of the full-year count, planned starts included, not rows of this table: about 30 trials starting in 2026 and about 22 in 2027, the average of the 24 months through September, counted as registered and carried forward, with about 0.7 times the starts already registered for the rest of 2026 added. The rows of this table count trials registered so far with a start date in the year, planned starts included; the forecast looks ahead to the count for the whole year, so it is not the same measure. In backtests on conditions of this size, forecasts made part-way through the year were typically off by about 15 percent and ran about 1 percent high against the count later registered; forecasts made before the year began were off by about 26 percent and ran about 20 percent low against the count later registered. The part-way figures are from forecasts that used a multiple fitted only on earlier years. These figures rest on a few years of history (target years from 2018 to 2025, varying by figure), place each condition as it is mapped today rather than as it was then, and score against a count for the newest year that was still being revised. Only condition series were scored.

Prediction, not a registry value: median of 32 months from start to primary completion across 36 trials still running at the 2026-10-09 snapshot; registered median of 13 months across 392 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Keratosis trials in? (9)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 58
Phase 1/2 17
Phase 2 88
Phase 2/3 10
Phase 3 88
Phase 4 50
Not applicable 129
Observational 90
Expanded access 2

How many Keratosis trials are recruiting? (9)

Shown in this order: the order a trial moves through, from not yet recruiting to unknown.

Trials by recruitment status
Status Trials
Not yet recruiting 18
Recruiting 36
Enrolling by invitation 5
Active, not recruiting 12
Completed 369

Status as registered on ClinicalTrials.gov. Each trial is counted once.

Which lead sponsors run the most Keratosis trials? (9)

Shown in this order: most trials first. Lead sponsors the registry classes as industry, NIH, US federal, other government or network. A hospital or university the registry files as government can appear here. Sponsors it classes as academic or other are shown on the full page, because that class cannot separate an institution from a named investigator.

Lead sponsors
Sponsor Trials
LEO Pharma 33
Peplin 21
Almirall, S.A. 14
Galderma R&D 11
DUSA Pharmaceuticals, Inc. 10

Which drugs are being tested for Keratosis? (4)

Shown in this order: most trials first. One row per drug, matched to a single molecule under all its names, ranked by number of trials.

Drugs tested
Drug Trials
Ingenol Mebutate 23
Petrolatum Ointment 7
Methyl Aminolevulinate 7
Tirbanibulin 5

Interventions as named in the registry (11)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
20 % Aminolevulinic Acid 18
Vehicle Gel 16
Imiquimod 5% 15
(PDT) Photodynamic therapy 14
Fluorouracile 10

These are the names sponsors entered on ClinicalTrials.gov that we have not matched to a single molecule. Some are drugs under a brand or code name; others are procedures, doses or arm labels.

Which serious adverse events do Keratosis trials report? (10)

Shown in this order: most subjects affected first. Subjects affected summed across trials, a cross-trial signal, not a rate.

Serious adverse events in this condition's trials
Adverse event Subjects affected Trials
Squamous cell carcinoma of skin 33 9
Basal cell carcinoma 12 7
Cerebrovascular accident 11 9
pneumonia 11 2
Bowen's disease 10 3

Which publications cover Keratosis? (80)

Shown in this order: major-topic papers first, then newest, then most linked to trials.

Sub-conditions in MeSH (8)

MeSH descendants one level down with at least one trial, most trials first.

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: prevalence and rare-disease identity.

Browse all condition evidence pages