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Condition (MeSH)

Leiomyosarcoma

ClinicalTrials.gov lists 157 trials for Leiomyosarcoma or a narrower condition beneath it. European Organisation for Research and Treatment of Cancer - EORTC has the most among industry and government lead sponsors, with 15.

MeSH D007890 Neoplasms Neoplasm C04 Listed by Orphanet as a rare disease
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Phase 1 Phase 1 26 Phase 1/2 Phase 1/2 15 Phase 2 Phase 2 75 Phase 2/3 Phase 2/3 3 Phase 3 Phase 3 16 Not applicable Not applicable 7 Observational Observational 14 Expanded access Expanded access 1 Phase 1 Phase 1 26 Phase 1/2 Phase 1/2 15 Phase 2 Phase 2 75 Phase 2/3 Phase 2/3 3 Phase 3 Phase 3 16 Not applicable Not applicable 7 Observational Observational 14 Expanded access Expanded access 1

Trials per phase (log scale)

157 of the 157 trials are tagged with Leiomyosarcoma itself; the rest are tagged with a narrower condition beneath it.

Get the Leiomyosarcoma 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 Leiomyosarcoma 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.

Trials over time, by phase

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

Top of scale: 12

1995: 1 trials (Phase 3 1) 1996: 1 trials (Phase 3 1) 1997: 2 trials (Phase 3 1, Phase 1 1) 1998: 3 trials (Phase 3 1, Phase 2 2) 1999: 2 trials (Phase 2 2) 2000: 2 trials (Phase 1/2 1, Phase 1 1) 2001: 2 trials (Phase 2 1, Phase 1 1) 2002: 3 trials (Phase 2 3) 2003: 5 trials (Phase 3 1, Phase 2 3, Phase 1 1) 2004: 4 trials (Observational 1, Phase 3 1, Phase 2 1, Phase 1 1) 2005: 5 trials (Phase 2 4, Phase 1 1) 2006: 9 trials (Not applicable 1, Phase 3 1, Phase 2 6, Phase 1 1) 2007: 5 trials (Observational 1, Phase 3 1, Phase 2 3) 2008: 4 trials (Phase 2 3, Phase 1 1) 2009: 4 trials (Phase 2 3, Phase 1/2 1) 2010: 3 trials (Observational 1, Phase 2 1, Phase 1/2 1) 2011: 5 trials (Phase 3 1, Phase 2/3 1, Phase 2 1, Phase 1/2 1, Phase 1 1) 2012: 6 trials (Not applicable 1, Phase 3 1, Phase 2 2, Phase 1/2 1, Phase 1 1) 2013: 2 trials (Phase 1/2 1, Phase 1 1) 2014: 3 trials (Phase 2/3 1, Phase 2 1, Phase 1/2 1) 2015: 6 trials (Observational 1, Phase 3 1, Phase 2 3, Phase 1/2 1) 2016: 4 trials (Observational 2, Phase 2 2) 2017: 7 trials (Phase 3 1, Phase 2 4, Phase 1/2 2) 2018: 3 trials (Phase 2 2, Phase 1/2 1) 2019: 12 trials (Observational 1, Phase 3 1, Phase 2 6, Phase 1 4) 2020: 7 trials (Not applicable 2, Phase 2 3, Phase 1 2) 2021: 11 trials (Observational 2, Not applicable 1, Phase 3 1, Phase 2 5, Phase 1/2 1, Phase 1 1) 2022: 6 trials (Observational 1, Phase 2/3 1, Phase 2 3, Phase 1 1) 2023: 7 trials (Observational 2, Not applicable 1, Phase 3 2, Phase 2 1, Phase 1 1) 2024: 9 trials (Observational 2, Phase 2 3, Phase 1/2 1, Phase 1 3) 2025: 5 trials (Not applicable 1, Phase 2 2, Phase 1/2 1, Phase 1 1)

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) 7
2025 5
2024 9
2023 7
2022 6
2021 11
2020 7
2019 12
2018 3
2017 7

Forecast of the full-year count, planned starts included, not rows of this table: about 6 trials starting in 2026 and about 5 in 2027, the average of the 24 months through September, counted as registered and carried forward. 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 28 percent and ran about 20 percent low against the count later registered; forecasts made before the year began were off by about 39 percent and ran about 37 percent low against the count later registered. 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. The 2026 forecast is below the 7 already registered with a 2026 start date: at the cutoff, 2 trials were already registered to start in October to December, more than the method's monthly average allows for, and the method does not use those planned starts.

Prediction, not a registry value: median of 36 months from start to primary completion across 21 trials still running at the 2026-10-09 snapshot; registered median of 47 months across 98 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Leiomyosarcoma trials in? (8)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 26
Phase 1/2 15
Phase 2 75
Phase 2/3 3
Phase 3 16
Not applicable 7
Observational 14
Expanded access 1

How many Leiomyosarcoma trials are recruiting? (8)

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 2
Recruiting 27
Active, not recruiting 11
Completed 78
Terminated 18

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

Which lead sponsors run the most Leiomyosarcoma trials? (4)

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
European Organisation for Research and Treatment of Cancer - EORTC 15
National Cancer Institute (NCI) 13
Eli Lilly and Company 3
Igenomix 2

Which drugs are being tested for Leiomyosarcoma? (3)

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
Trabectedin 11
NIVOLUMAB 5
PEMBROLIZUMAB 3

Interventions as named in the registry (12)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
Doxorubicine 24
Ifosfamid 13
Gemcitabine/Gemzar 10
Radiation Therapy 9
Docetetaxel 7

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 Leiomyosarcoma 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
Febrile neutropenia 124 12
Vomiting 64 16
Nausea 49 14
Dehydration 47 14
Pyrexia 41 6

Which publications cover Leiomyosarcoma? (127)

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

Prevalence (6)

Shown in this order: jurisdiction, then disease name. Orphanet observation for the mapped ORPHA concept; the mapping relation column says whether that concept is exactly this condition or broader or narrower.

Prevalence
Orphanet disease Type Class Geography Jurisdiction Mapping relation
Leiomyosarcoma Annual incidence Unknown Worldwide Not stated Exact
Leiomyosarcoma Annual incidence Unknown Worldwide Not stated Unspecified
Leiomyosarcoma Annual incidence Unknown Worldwide Not stated Exact
Leiomyosarcoma Point prevalence Unknown Worldwide Not stated Exact
Leiomyosarcoma Point prevalence Unknown Worldwide Not stated Unspecified

Rare-disease identity (2)

Shown in this order: exact, broader, narrower, other.

Rare-disease identity
Orphanet disease ORPHA code Relation Source
Leiomyosarcoma 64720 Exact Orphanet Rare Disease Ontology (ORDO)
Leiomyosarcoma 64720 Exact Orphadata Science knowledge files, Product 1

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: sub-conditions in mesh.

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