How many clinical trials are there for Biological Markers?

PlainTrial tracks 1 US clinical trials for Biological Markers, of which 0 are currently recruiting.

Which interventions appear most often on Biological Markers trial records?

Dose Response (DR)- Controlled Feeding Diet is the most-linked intervention name on Biological Markers records (1 trial links), followed by Pharmacokinetic (PK)- Controlled Feeding Diet. Names are sponsor-reported on ClinicalTrials.gov.

How do I find a recruiting trial for Biological Markers?

Use the trial list filtered by Recruiting status, or visit the trial finder to search by condition and state. Always discuss with your healthcare provider.

Is this data current?

Data is from ClinicalTrials.gov. Trial status may have changed. Always verify at ClinicalTrials.gov before making participation decisions.

Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.

ClinicalTrials.gov enrollment closed small index

Biological Markers clinical trials

Compiled by PlainTrial · August 8, 2026

A small indexed set (1 trial) with no open enrollment listed right now.

Corpus placement: #11,370 of 28,707 conditions by registered trial count.

Browse conditions → How counts are built

1 US clinical trials · none currently recruiting · #11,370 of 28,707 conditions by registered trial count

Biological Markers: 1 US clinical trial tracked, none currently recruiting.

Biological Markers is the subject of 1 registered US clinical trials on ClinicalTrials.gov, none currently recruiting. The most active sponsor is Harvard School of Public Health (HSPH), running 1 of these trials.

Enrollment posture brief

Registry condition biological-markers

Volume-matched condition peers

Nearest open-share peer: Accelerated Phase Chronic Myelogenous Leukemia (0% recruiting · 12 trials)

Open-enrollment share among volume-matched conditions near Biological Markers

Biological Markers has no open enrollment in this registry pull (1 archived studies). Peers show how other volume-matched labels compare on open share. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Biological Markers on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

Biological Markers is recruiting below its size-band peers.

0 of 1 indexed trials (0%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

Indexed trials (enrollment closed)

1 total, page 1 of 1

COMPLETED NA 115 participants

Dietary Biomarkers Intervention Core

Harvard School of Public Health (HSPH)

NCT05616585

Phase Distribution

Phase data not available

Top Sponsors

Harvard School of Public Health (HSPH) 1 trials

Named interventions

Most-linked intervention names on Biological Markers records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Dose Response (DR)- Controlled Feeding Diet Other

1 trials

Pharmacokinetic (PK)- Controlled Feeding Diet Other

1 trials

US sites by state

Facility locations filed on Biological Markers trials. A trial with sites in several states counts in each.

Massachusetts 1 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

Read our methodology - how this data is sourced, computed, and verified.

What to do with this Biological Markers page

1 registered trials, 0 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

No Biological Markers trials are currently recruiting in this registry; that can change as new trials post, or check the broader research index. Browse research indexes
Harvard School of Public Health (HSPH) sponsors the most Biological Markers trials on record, review their full trial history before evaluating a specific study. See Harvard School of Public Health (HSPH)'s trials
Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Biological Markers condition card totals 1 registered trials; most-linked intervention Dose Response (DR)- Controlled Feeding Diet; top US site state Massachusetts. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.