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Condition (MeSH)

Oligodendroglioma

ClinicalTrials.gov lists 410 trials for Oligodendroglioma or a narrower condition beneath it. National Cancer Institute (NCI) has the most among industry and government lead sponsors, with 56.

MeSH D009837 Neoplasms Neoplasm C04 Listed by Orphanet as a rare disease
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Phase 1 Phase 1 157 Phase 1/2 Phase 1/2 42 Phase 2 Phase 2 115 Phase 2/3 Phase 2/3 2 Phase 3 Phase 3 21 Phase 4 Phase 4 2 Not applicable Not applicable 29 Observational Observational 40 Phase 1 Phase 1 157 Phase 1/2 Phase 1/2 42 Phase 2 Phase 2 115 Phase 2/3 Phase 2/3 2 Phase 3 Phase 3 21 Phase 4 Phase 4 2 Not applicable Not applicable 29 Observational Observational 40

Trials per phase (log scale)

1 more section with rows

410 of the 410 trials are tagged with Oligodendroglioma itself; the rest are tagged with a narrower condition beneath it.

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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 Oligodendroglioma trials start? (36)

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. 3 trials are 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: 26

1991: 1 trials (Phase 1 1) 1992: 2 trials (Observational 1, Phase 2 1) 1993: 3 trials (Phase 2 1, Phase 1/2 1, Phase 1 1) 1994: 5 trials (Phase 3 1, Phase 2 1, Phase 1 3) 1995: 2 trials (Observational 1, Phase 2 1) 1996: 7 trials (Not applicable 1, Phase 3 1, Phase 2 3, Phase 1 2) 1997: 10 trials (Phase 3 1, Phase 2 5, Phase 1/2 1, Phase 1 3) 1998: 14 trials (Not applicable 1, Phase 2/3 1, Phase 2 7, Phase 1/2 2, Phase 1 3) 1999: 15 trials (Phase 3 1, Phase 2 6, Phase 1/2 1, Phase 1 7) 2000: 19 trials (Phase 2 5, Phase 1/2 6, Phase 1 8) 2001: 15 trials (Observational 2, Not applicable 1, Phase 2 3, Phase 1/2 3, Phase 1 6) 2002: 16 trials (Observational 2, Phase 3 1, Phase 2 2, Phase 1/2 1, Phase 1 10) 2003: 13 trials (Observational 1, Phase 2 7, Phase 1/2 1, Phase 1 4) 2004: 21 trials (Observational 4, Not applicable 3, Phase 3 1, Phase 2 4, Phase 1/2 3, Phase 1 6) 2005: 26 trials (Observational 3, Not applicable 2, Phase 3 1, Phase 2 6, Phase 1/2 5, Phase 1 9) 2006: 20 trials (Observational 1, Not applicable 2, Phase 2 10, Phase 1/2 1, Phase 1 6) 2007: 15 trials (Observational 1, Phase 3 3, Phase 2 5, Phase 1/2 1, Phase 1 5) 2008: 24 trials (Observational 3, Not applicable 2, Phase 3 1, Phase 2 7, Phase 1/2 2, Phase 1 9) 2009: 14 trials (Observational 1, Phase 3 2, Phase 2 4, Phase 1/2 1, Phase 1 6) 2010: 20 trials (Not applicable 1, Phase 3 1, Phase 2 2, Phase 1/2 3, Phase 1 13) 2011: 13 trials (Observational 2, Not applicable 2, Phase 2 2, Phase 1/2 1, Phase 1 6) 2012: 19 trials (Not applicable 2, Phase 3 2, Phase 2 5, Phase 1/2 2, Phase 1 8) 2013: 9 trials (Observational 1, Not applicable 1, Phase 2 2, Phase 1/2 2, Phase 1 3) 2014: 12 trials (Observational 2, Not applicable 2, Phase 2 3, Phase 1 5) 2015: 6 trials (Phase 2 3, Phase 1 3) 2016: 8 trials (Observational 1, Phase 1 7) 2017: 10 trials (Observational 1, Not applicable 1, Phase 2 2, Phase 1 6) 2018: 4 trials (Observational 1, Phase 2 2, Phase 1 1) 2019: 10 trials (Observational 3, Phase 4 1, Phase 2 3, Phase 1 3) 2020: 7 trials (Observational 2, Phase 2/3 1, Phase 2 1, Phase 1 3) 2021: 4 trials (Observational 1, Phase 3 2, Phase 1/2 1) 2022: 12 trials (Observational 2, Not applicable 2, Phase 2 4, Phase 1/2 2, Phase 1 2) 2023: 6 trials (Observational 2, Phase 3 1, Phase 1 3) 2024: 6 trials (Observational 1, Not applicable 2, Phase 4 1, Phase 2 1, Phase 1 1) 2025: 7 trials (Observational 1, Not applicable 2, Phase 2 1, Phase 1/2 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) 5
2025 7
2024 6
2023 6
2022 12
2021 4
2020 7
2019 10
2018 4
2017 10

Forecast of the full-year count, planned starts included, not rows of this table: about 6 trials starting in 2026 and about 6 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.

Prediction, not a registry value: median of 36 months from start to primary completion across 19 trials still running at the 2026-10-09 snapshot; registered median of 48 months across 295 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Oligodendroglioma trials in? (9)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 157
Phase 1/2 42
Phase 2 115
Phase 2/3 2
Phase 3 21
Phase 4 2
Not applicable 29
Observational 40
Expanded access 2

How many Oligodendroglioma trials are recruiting? (10)

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 7
Recruiting 22
Active, not recruiting 15
Completed 257
Approved for marketing 1

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

Which lead sponsors run the most Oligodendroglioma trials? (5)

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
National Cancer Institute (NCI) 56
Pediatric Brain Tumor Consortium 14
Children's Oncology Group 10
European Organisation for Research and Treatment of Cancer - EORTC 9
National Institutes of Health Clinical Center (CC) 8

Which drugs are being tested for Oligodendroglioma? (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
Irinotecan 14
Procarbazine 9
Cytoxan 8

Interventions as named in the registry (12)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
SOC: Temozolomide 69
Radiation Therapy 30
or carboplatin 20
Filgrastime (G-CSF) 13
Carmustin 13

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 Oligodendroglioma 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
Seizure 114 32
Headache 53 25
NEUROLOGY 46 1
Vomiting 41 20
Platelet count decreased 37 11

Which publications cover Oligodendroglioma? (79)

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

Publications
Publication Journal Year Major topic
Diagnostic accuracy of anti-3-[<sup>18</sup>F]-FACBC PET/MRI in gliomas. European journal of nuclear medicine and molecular imaging 2024 Yes
Genomic alterations of oligodendrogliomas at distant recurrence. Cancer medicine 2023 Yes
Joint Final Report of EORTC 26951 and RTOG 9402: Phase III Trials With Procarbazine, Lomustine, and Vincristine Chemotherapy for Anaplastic Oligodendroglial Tumors. Journal of clinical oncology : official journal of the American Society of Clinical Oncology 2022 Yes
Therapy for Diffuse Astrocytic and Oligodendroglial Tumors in Adults: ASCO-SNO Guideline. Journal of clinical oncology : official journal of the American Society of Clinical Oncology 2022 Yes
Improvement of functional outcome for patients with newly diagnosed grade 2 or 3 gliomas with co-deletion of 1p/19q - IMPROVE CODEL: the NOA-18 trial. BMC cancer 2022 Yes

Prevalence (3)

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
Oligodendroglioma grade 2 Annual incidence 1-9 / 1 000 000 Europe Not stated Exact
Oligodendroglioma grade 2 Annual incidence 1-9 / 1 000 000 Europe Not stated Exact
Oligodendroglioma grade 2 Annual incidence 1-9 / 1 000 000 Europe Not stated Unspecified

Rare-disease identity (2)

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

Rare-disease identity
Orphanet disease ORPHA code Relation Source
Oligodendroglioma grade 2 251627 Exact Orphanet Rare Disease Ontology (ORDO)
Oligodendroglioma grade 2 251627 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.

Browse all condition evidence pages