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Condition (MeSH)

Obesity, Morbid

ClinicalTrials.gov lists 928 trials for Obesity, Morbid or a narrower condition beneath it. Sheba Medical Center has the most among industry and government lead sponsors, with 7.

MeSH D009767 Nutritional and Metabolic Diseases C18 C23
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Phase 1 Phase 1 18 Phase 1/2 Phase 1/2 4 Phase 2 Phase 2 18 Phase 2/3 Phase 2/3 9 Phase 3 Phase 3 21 Phase 4 Phase 4 57 Not applicable Not applicable 485 Observational Observational 315 Phase 1 Phase 1 18 Phase 1/2 Phase 1/2 4 Phase 2 Phase 2 18 Phase 2/3 Phase 2/3 9 Phase 3 Phase 3 21 Phase 4 Phase 4 57 Not applicable Not applicable 485 Observational Observational 315

Trials per phase (log scale)

1 more section with rows

928 of the 928 trials are tagged with Obesity, Morbid itself; the rest are tagged with a narrower condition beneath it.

Get the Obesity, Morbid 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 Obesity, Morbid trials start? (28)

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
  • Other (Unknown)

Top of scale: 71

1996: 1 trials (Observational 1) 1998: 2 trials (Observational 1, Not applicable 1) 2000: 2 trials (Observational 1, Phase 4 1) 2002: 2 trials (Not applicable 2) 2003: 4 trials (Observational 1, Not applicable 1, Phase 3 2) 2004: 2 trials (Not applicable 2) 2005: 10 trials (Observational 5, Not applicable 5) 2006: 17 trials (Observational 8, Not applicable 5, Phase 4 2, Phase 1 2) 2007: 30 trials (Observational 13, Not applicable 10, Phase 4 1, Phase 3 2, Phase 2 2, Phase 1 2) 2008: 28 trials (Observational 11, Not applicable 12, Phase 4 2, Phase 3 2, Phase 2 1) 2009: 40 trials (Observational 20, Not applicable 17, Phase 2/3 1, Phase 2 2) 2010: 29 trials (Observational 10, Not applicable 16, Phase 2/3 2, Phase 1/2 1) 2011: 44 trials (Observational 11, Not applicable 28, Phase 4 2, Phase 2 1, Phase 1 2) 2012: 46 trials (Observational 17, Not applicable 21, Phase 4 2, Phase 3 2, Phase 2/3 1, Phase 2 2, Phase 1 1) 2013: 34 trials (Observational 11, Not applicable 13, Phase 4 3, Phase 3 1, Phase 2 1, Phase 1/2 3, Phase 1 2) 2014: 39 trials (Observational 6, Not applicable 23, Phase 4 6, Phase 3 2, Phase 2 2) 2015: 32 trials (Observational 10, Not applicable 19, Phase 4 1, Phase 2 2) 2016: 63 trials (Other 1, Observational 32, Not applicable 23, Phase 4 5, Phase 3 1, Phase 2 1) 2017: 50 trials (Observational 16, Not applicable 25, Phase 4 4, Phase 3 2, Phase 2 1, Phase 1 2) 2018: 71 trials (Observational 25, Not applicable 38, Phase 4 4, Phase 2/3 1, Phase 2 1, Phase 1 2) 2019: 49 trials (Observational 14, Not applicable 31, Phase 4 4) 2020: 60 trials (Observational 18, Not applicable 38, Phase 4 1, Phase 2 2, Phase 1 1) 2021: 54 trials (Observational 15, Not applicable 36, Phase 4 1, Phase 3 2) 2022: 57 trials (Observational 17, Not applicable 32, Phase 4 3, Phase 3 2, Phase 2/3 1, Phase 1 2) 2023: 54 trials (Observational 14, Not applicable 35, Phase 4 3, Phase 2/3 2) 2024: 39 trials (Observational 7, Not applicable 24, Phase 4 3, Phase 3 2, Phase 2/3 1, Phase 1 2) 2025: 36 trials (Observational 18, Not applicable 15, Phase 4 3)

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) 29
2025 36
2024 39
2023 54
2022 57
2021 54
2020 60
2019 49
2018 71
2017 50

Forecast of the full-year count, planned starts included, not rows of this table: about 35 trials starting in 2026 and about 32 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 36 months from start to primary completion across 59 trials still running at the 2026-10-09 snapshot; registered median of 22 months across 593 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Obesity, Morbid trials in? (9)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 18
Phase 1/2 4
Phase 2 18
Phase 2/3 9
Phase 3 21
Phase 4 57
Not applicable 485
Observational 315
Unknown 1

How many Obesity, Morbid 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 31
Recruiting 96
Enrolling by invitation 13
Active, not recruiting 36
Completed 511

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

Which lead sponsors run the most Obesity, Morbid trials? (1)

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
Sheba Medical Center 7

Which drugs are being tested for Obesity, Morbid? (5)

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
PROPOFOL 6
Semaglutide 5
FENTANYL 5
PMI-150 (intranasal ketamine) 4
Neostigmine 3

Interventions as named in the registry (10)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
gastric bypass 20
Control (placebo) group 6
A3: Acetaminophen (Tylenol caplets®, from Janssen-Cilag, S.A. de C.V.) 6
Gabapentin 6% 4
Liver biopsy 3

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 Obesity, Morbid 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
Band Removal 67 1
Band removal 36 2
DEVICE MIGRATION 28 1
Band Slip 24 2
abdominoplasty 23 1

Which publications cover Obesity, Morbid? (2,445)

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

Not on this page

Not measured: delivery record.

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

Browse all condition evidence pages