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ClinicalTrials.gov enrollment closed early-phase tilt small index

Estrogen Receptor-negative Breast Cancer: early-phase trial registry

A small indexed set (5 trials) with no open enrollment listed right now.

Corpus placement: #3,391 of 28,707 conditions by registered trial count.

5 US clinical trials · none currently recruiting · #3,391 of 28,707 conditions by registered trial count

Estrogen Receptor-negative Breast Cancer: 5 US clinical trials tracked, none currently recruiting.

Estrogen Receptor-negative Breast Cancer is the subject of 5 registered US clinical trials on ClinicalTrials.gov, none currently recruiting. 0 are in Phase 3-4 (later-stage) and 5 in Phase 1-2 (earlier-stage). The most active sponsor is Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University, running 1 of these trials.

Enrollment posture brief

Registry condition estrogen-receptor-negative-breast-cancer

OPEN 0 | RECR 0% | LATE 0 | EARLY 5 | RANK #3391 | SPON 1

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

Ablation80%ACL Reconstruction80%Abuse, Drug60%Acceptability60%Estrogen Receptor-negati (th…0%
Open-enrollment share among volume-matched conditions near Estrogen Receptor-negative Breast Cancer

Estrogen Receptor-negative Breast Cancer has no open enrollment in this registry pull (5 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 Estrogen Receptor-negative Breast Cancer 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.

  1. Estrogen Receptor-negative Breast Cancer is recruiting below its size-band peers.

    0 of 5 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.

  2. One sponsor concentrates Estrogen Receptor-negative Breast Cancer research.

    Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University accounts for 1 of 5 trials (20%). 5 distinct sponsors appear on at least one study for this condition label.

  3. Most Estrogen Receptor-negative Breast Cancer trials plan to enrol fewer than 100 people.

    Median target enrolment is 40 among the 5 trials that report a genuine target (sentinel values excluded). 5 of those (100%) plan for fewer than 100 participants.

  4. Estrogen Receptor-negative Breast Cancer research is mostly interventional.

    5 interventional and 0 observational studies make up this index (100% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 11Phase 24

Phase Distribution

PhaseTrial count
Phase 1 1
Phase 2 4

Named interventions

Most-linked intervention names on Estrogen Receptor-negative Breast Cancer records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Paclitaxel Drug
2 trials
Doxorubicin Drug
2 trials
Carboplatin Drug
2 trials
Cyclophosphamide Drug
2 trials
Medroxyprogesterone with Cyclophosphamide + Methotrexate Drug
1 trials
Medroxyprogesterone progesterone acetate (MPA) Drug
1 trials
defined green tea catechin extract Drug
1 trials
questionnaire administration Procedure
1 trials

US sites by state

Facility locations filed on Estrogen Receptor-negative Breast Cancer trials. A trial with sites in several states counts in each.

Texas 2 trials
Virginia 1 trials
Pennsylvania 1 trials
Ohio 1 trials
New York 1 trials
New Jersey 1 trials
North Carolina 1 trials
Maryland 1 trials

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

What to do with this Estrogen Receptor-negative Breast Cancer page

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

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 Estrogen Receptor-negative Breast Cancer condition card totals 5 registered trials; most-linked intervention Paclitaxel; top US site state Texas. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.