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Condition (MeSH)

Cytomegalovirus Infections

ClinicalTrials.gov lists 401 trials for Cytomegalovirus Infections or a narrower condition beneath it. National Institute of Allergy and Infectious Diseases (NIAID) has the most among industry and government lead sponsors, with 47.

MeSH D003586 Infections C01
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Phase 1 Phase 1 60 Phase 1/2 Phase 1/2 16 Phase 2 Phase 2 61 Phase 2/3 Phase 2/3 10 Phase 3 Phase 3 44 Phase 4 Phase 4 38 Not applicable Not applicable 64 Observational Observational 105 Phase 1 Phase 1 60 Phase 1/2 Phase 1/2 16 Phase 2 Phase 2 61 Phase 2/3 Phase 2/3 10 Phase 3 Phase 3 44 Phase 4 Phase 4 38 Not applicable Not applicable 64 Observational Observational 105

Trials per phase

1 more section with rows

369 of the 401 trials are tagged with Cytomegalovirus Infections itself; the rest are tagged with a narrower condition beneath it.

Get the Cytomegalovirus Infections 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 Cytomegalovirus Infections 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.

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: 20

1990: 2 trials (Observational 1, Phase 3 1) 1991: 1 trials (Phase 3 1) 1992: 2 trials (Phase 3 2) 1994: 2 trials (Not applicable 1, Phase 2/3 1) 1995: 3 trials (Phase 2/3 1, Phase 2 1, Phase 1/2 1) 1996: 2 trials (Observational 1, Phase 3 1) 1997: 4 trials (Observational 1, Phase 3 2, Phase 1 1) 1998: 2 trials (Observational 2) 1999: 4 trials (Observational 2, Phase 2 2) 2000: 4 trials (Observational 1, Not applicable 1, Phase 4 1, Phase 3 1) 2001: 4 trials (Observational 3, Not applicable 1) 2002: 3 trials (Observational 1, Phase 4 1, Phase 1/2 1) 2003: 3 trials (Observational 1, Not applicable 1, Phase 3 1) 2004: 13 trials (Observational 3, Phase 4 3, Phase 3 2, Phase 2/3 1, Phase 2 2, Phase 1 2) 2005: 4 trials (Observational 2, Phase 4 1, Phase 2 1) 2006: 14 trials (Observational 2, Not applicable 1, Phase 4 1, Phase 3 4, Phase 2 3, Phase 1 3) 2007: 7 trials (Observational 1, Phase 3 1, Phase 2/3 1, Phase 1 4) 2008: 6 trials (Observational 1, Not applicable 1, Phase 3 2, Phase 2 1, Phase 1 1) 2009: 7 trials (Observational 1, Phase 4 1, Phase 3 1, Phase 2/3 1, Phase 2 2, Phase 1 1) 2010: 13 trials (Observational 7, Not applicable 3, Phase 3 1, Phase 2 1, Phase 1/2 1) 2011: 10 trials (Observational 2, Not applicable 1, Phase 4 4, Phase 1 3) 2012: 13 trials (Observational 2, Not applicable 1, Phase 4 4, Phase 3 2, Phase 2 1, Phase 1 3) 2013: 12 trials (Observational 3, Not applicable 2, Phase 4 1, Phase 3 1, Phase 2 1, Phase 1 4) 2014: 16 trials (Observational 6, Not applicable 2, Phase 4 3, Phase 2 4, Phase 1 1) 2015: 16 trials (Observational 4, Not applicable 1, Phase 4 1, Phase 3 2, Phase 2/3 1, Phase 2 4, Phase 1 3) 2016: 14 trials (Observational 7, Not applicable 1, Phase 4 2, Phase 2 1, Phase 1/2 1, Phase 1 2) 2017: 11 trials (Observational 4, Not applicable 3, Phase 2/3 1, Phase 2 1, Phase 1/2 1, Phase 1 1) 2018: 12 trials (Observational 3, Not applicable 2, Phase 2 4, Phase 1/2 2, Phase 1 1) 2019: 17 trials (Observational 4, Not applicable 2, Phase 3 4, Phase 2 4, Phase 1 3) 2020: 15 trials (Observational 4, Not applicable 2, Phase 4 1, Phase 2/3 1, Phase 2 3, Phase 1/2 2, Phase 1 2) 2021: 19 trials (Observational 6, Not applicable 1, Phase 4 2, Phase 3 2, Phase 2/3 1, Phase 2 4, Phase 1/2 1, Phase 1 2) 2022: 9 trials (Observational 1, Not applicable 1, Phase 4 1, Phase 2/3 1, Phase 2 2, Phase 1/2 1, Phase 1 2) 2023: 20 trials (Observational 9, Not applicable 1, Phase 4 2, Phase 3 1, Phase 2 2, Phase 1/2 1, Phase 1 4) 2024: 14 trials (Observational 5, Not applicable 2, Phase 4 1, Phase 3 3, Phase 2 2, Phase 1/2 1) 2025: 16 trials (Observational 7, Not applicable 2, Phase 4 2, Phase 2 1, Phase 1/2 2, 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) 14
2025 16
2024 14
2023 20
2022 9
2021 19
2020 15
2019 17
2018 12
2017 11

Forecast of the full-year count, planned starts included, not rows of this table: about 17 trials starting in 2026 and about 15 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 35 months across 194 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Cytomegalovirus Infections trials in? (9)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 60
Phase 1/2 16
Phase 2 61
Phase 2/3 10
Phase 3 44
Phase 4 38
Not applicable 64
Observational 105
Expanded access 3

How many Cytomegalovirus Infections trials are recruiting? (11)

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 12
Recruiting 34
Enrolling by invitation 2
Active, not recruiting 10
Available 1

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

Which lead sponsors run the most Cytomegalovirus Infections trials? (8)

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 Institute of Allergy and Infectious Diseases (NIAID) 47
Hoffmann-La Roche 23
National Heart, Lung, and Blood Institute (NHLBI) 10
ModernaTX, Inc. 8
Astra USA 6

Which drugs are being tested for Cytomegalovirus Infections? (9)

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
Ganciclovir 58
Foscarnet 19
Cidofovir 9
Zidovudine 6
Sevirumab 6

Interventions as named in the registry (6)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
Valganciclovir 41
Letermovir Pill 19
mRNA-1647 8
Valacyclovir arrow 6
CMV gB vaccine 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 Cytomegalovirus Infections 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
Neutropenia 160 9
Opportunistic Infection 133 1
Pyrexia 117 15
Acute Graft Versus Host Disease 83 2
Pneumonia 69 12

Which publications cover Cytomegalovirus Infections? (692)

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

Sub-conditions in MeSH (1)

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.

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