ClinicalTrials.gg
Active, not recruitingNCT03379428Updated Dec 6, 2024

Trial of Ibrutinib Plus Trastuzumab in HER2-amplified Metastatic Breast Cancer

A Phase 1/2 interventional study of Trastuzumab and Ibrutinib 560 mg in Breast Neoplasms and Malignant Neoplasm of Breast, sponsored by US Oncology Research. Active, not recruiting at 1 site in United States. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-12-06.

Sponsored by US Oncology Research (part of Sarah Cannon Research Institute) · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jan 2025, 1 year 10 months ago, but the record still lists the study as active, not recruiting.

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Phase
Phase 1/2
Study type
Interventional
Enrollment
34
Allocation
Non-randomized
Ages
18 Years and older
Sex
Female
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 373 studies testing trastuzumab in Breast Neoplasms — 56 open to participants now, 85 under way, 5 of them phase 3. Trastuzumab · Breast Neoplasms.

Enrollment
258th of 365
34 · median 62
Started
2017
with 5 others
Phase 1/2
30 of 373
1 open now
Primary completion
2025-01
later than 24 of 84 live
Registered
259th of 373
by date

Among the 373 studies testing trastuzumab in Breast Neoplasms, this one is the 258th largest by enrollment of the 365 interventional ones that give a count, is one of 6 that started in 2017, is one of 30 in phase 1/2, reaches primary completion later than 24 of the 84 other live ones, and was the 259th registered.

Breast Neoplasms

14,832 studies on the registry are indexed under Breast Neoplasms; 3,320 are open to participants now.

Browse Breast Neoplasms studies →

Open to participants now

56 of the 373 studies testing trastuzumab in Breast Neoplasms are open now, in 12 countries. Recruiting first, the newest first:

51 more — sign in →

By country, each count listing its studies:

All 56 open studies →

About trastuzumab

Trastuzumab: first FDA approval 1998 (HERCEPTIN), first EMA approval 2000. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 2,399 Breast Neoplasms studies recruiting now, 1,570 (65%) set no upper age limit and 592 (25%) stop at 75 or younger; 103 take children under 18; 215 take healthy volunteers.

This study: 18 Years and older · female · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 373 studies testing trastuzumab in Breast Neoplasms, or all of them as a file.
02

Study summary

This is a Phase I/II, open-label dose-escalation study designed to evaluate the maximum tolerated dose (MTD) and dose-limiting side effects of ibrutinib (560 or 840 or 420 mg daily oral dose), given in combination with trastuzumab administered through the vein, in patients with HER2-amplified Metastatic Breast Cancer that has gotten worse after prior therapy with ado-trastuzumab emtansine (T-DM1).

Read the detailed description

Ado-trastuzumab emtansine (T-DM1) is approved by the FDA for patients with HER2-positive metastatic breast cancer (MBC) previously treated with a taxane and trastuzumab, and is currently listed as the preferred second-line therapy in the NCCN guidelines (NCCN 2014). While the benefit of continued HER2 inhibition has been conclusively established for disease that has progressed on a trastuzumab-containing regimen, there are currently no data regarding the efficacy of HER2- targeted therapies following progression on T-DM1.

With the population of T-DM1-treated patients steadily growing, clinical trials are needed to investigate novel therapies in this setting,to meet the medical need for effective, evidence-based therapies for these patients.

The oral small-molecule Bruton's Tyrosine Kinase (BTK) inhibitor ibrutinib has also demonstrated the ability to inhibit erythroblastosis virus oncogene B (ErbB)/HER receptor family kinases in preclinical studies at clinically relevant concentrations, with an equivalent or greater potency than other HER2-directed tyrosine kinase inhibitors (TKIs) with demonstrated activity in HER2-positive MBC, including lapatinib, neratinib, and afatinib. Of note, in preclinical HER2-positive cell model systems the growth inhibitory ability of ibrutinib was substantially greater in HER2-amplified breast cancer cells versus those that simply overexpressed the HER2 protein.

Ibrutinib is currently approved for use in patients with Chronic lymphocytic leukemia (CLL) or Mantle cell lymphoma (MCL), and has an established safety record from clinical trials in these patient populations. Thus there is a reasonable rationale to investigate ibrutinib in patients with HER2- amplified MBC, in the setting of T-DM1-pretreated disease. Previous studies have demonstrated that combined targeting of HER2 with multiple HER2-directed agents is more effective that single agent therapy and therefore this study will explore the safety and efficacy of ibrutinib in combination with trastuzumab.

This is a Phase I/II, open-label, unblinded, nonrandomized, standard 3+3 dose-escalation study designed to evaluate the maximum tolerated dose (MTD) and dose-limiting toxicities (DLT) of ibrutinib (560 or 840 or 420 mg QD) given orally in combination with trastuzumab (8 mg/kg loading dose followed by 6 mg/kg q3w) administered intravenously (IV) in patients with HER2-amplified MBC that has progressed on prior therapy with ado-trastuzumab emtansine.

Once the recommended phase II dose of ibrutinib plus trastuzumab has been determined (no more than 1 of 6 patients with dose-limiting toxicity) in the required 6 to 18 patients over the 3 possible dose levels, additional patients will be enrolled on the phase II part of the study at the recommended phase II dose of ibrutinib plus trastuzumab, for a maximum of 51 patients total.

03

Conditions studied

  • Breast Neoplasms
  • Malignant Neoplasm of Breast

Browse trials for

Keywords

  • Breast Cancer
  • Metastatic Breast Cancer
  • HER2-amplified Metastatic Breast Cancer
  • HER2-positive Metastatic Breast Cancer
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

    1. Female, Age ≥ 18 years
    1. Histologic or cytologic confirmation of -amplified breast cancer according to most recent (local testing permitted)

      • a. HER2-amplified status is defined as a HER2/CEP17 ratio ≥2 or an average of ≥6 HER2 gene copies per cell by in situ hybridization (ISH) according to the 2013 American Society of Clinical Oncology (ASCO)/CAP guidelines
    1. Measurable or evaluable disease by (v1.1).
    1. Progression of disease on or ≤6 months of completing prior TDM1 therapy
    1. ≤ 4 prior chemotherapy regimens for MBC (Phase I portion) or ≤ 3 prior chemotherapy regimens for MBC (Phase II portion)
    1. Adequate hematologic function independent of transfusion and growth factor support for ≤7 days prior to screening, with the exception of pegylated G-CSF (pegfilgrastim) and darbepoetin which require discontinuation at least 14 days prior to screening, defined as:

      • >1500 cells/mm3 (0.75 x 10\^9/L).
      • count >100,000 cells/mm3 (50 x 10\^9/L).
      • >9.0 g/dL.
    1. Adequate hepatic and renal function defined as:

      • Serum (AST) and/or alanine transaminase (ALT) ≤5.0 x (ULN) if liver metastases, or ≤3 x ULN in the absence of liver metastases.
      • Alkaline phosphatase \<2.5 x ULN, unless bone metastases are present and in the absence of liver metastases
      • Estimated ≥30 ml/min (Cockcroft-Gault)
      • ≤1.5 x ULN (unless bilirubin rise is due to Gilbert's syndrome or of non-hepatic origin, such as hemolysis)
    1. (PT)/international normalized ratio (INR) \< 1.5xULN and PTT (aPTT) \< 1.5x ULN
    1. (LVEF) ≥ 50% at baseline as determined by either ECHO or multiple gated acquisition scan (MUGA) and within normal limits per institutional guidelines
    1. (ECOG) performance status of 0, 1, or 2.
    1. Negative urine/serum pregnancy test within 72 hours before starting study medications for women of
    1. Women of childbearing potential who agree to use two highly effective methods of (e.g., some intrauterine devices [IUD], diaphragm with spermicide, condom with spermicide, sterilized partner, or complete abstinence) for the duration of the study and for 30 days after the last dose of study drug

      o Note: Women are considered and not of childbearing potential if they have had 12 months of natural (spontaneous) amenorrhea with an appropriate clinical profile (e.g. age appropriate, history of vasomotor symptoms), or if they have undergone surgical sterilization

    1. Signed obtained prior to any screening procedures.
    1. Signed Patient Authorization Form (HIPAA) obtained prior to any screening procedures.

Exclusion criteria

Exclusion Criteria:

    1. Uncontrolled or untreated central nervous system , defined as clinical or radiologic evidence of progression of or clinical signs of

      1. Patients with treated brain metastases are eligible provided they do not have clinical or radiologic evidence of disease progression and have been off of dexamethasone for ≥2 weeks prior to first dose of study drugs
      2. Brain MRI at baseline required for patients with known brain metastases at study entry
    1. Chemotherapy ≤ 21 days prior to first administration of study treatment
    1. History of other , except:

      • Malignancy treated with curative intent and with no known active disease present for ≥3 years before the first dose of study drug and felt to be at low risk for recurrence by treating physician.
      • Adequately treated non-melanoma skin cancer or lentigo maligna without evidence of disease.
      • Adequately treated carcinoma in situ without evidence of disease.
    1. Concurrent systemic therapy (e.g., cyclosporine A, tacrolimus, etc., or chronic administration days] [ > 14 days] of >5 mg/day of prednisone) ≤28 days of the first dose of study drug.
    1. Vaccinated with live, attenuated vaccines ≤4 weeks of first dose of study drug.
    1. Recent infection requiring systemic treatment that was completed ≤14 days before the first dose of study drug.
    1. Unresolved toxicities from prior anti-cancer therapy, defined as having not resolved to Common Terminology Criteria for Adverse Event (, version 4), grade 0 or 1, or to the levels dictated in the inclusion/exclusion criteria with the exception of alopecia.
    1. Known bleeding disorders (e.g., von Willebrand's disease) or hemophilia.
    1. History of stroke or intracranial hemorrhage ≤6 months prior to first dose of study drug.
    1. Known history of (HIV) or active with virus (HCV) or virus (HBV). Patients who are positive for hepatitis B core antibody or hepatitis B surface antigen must have a negative polymerase chain reaction (PCR) result before enrollment. Those who are PCR positive will be excluded.
    1. Any uncontrolled active systemic infection.
    1. Major surgery ≤ 4 weeks of first dose of study drug.
    1. Any life-threatening illness, medical condition, or organ system dysfunction that, in the investigator's opinion, could compromise the subject's safety or put the study outcomes at undue risk.
    1. Currently active, cardiovascular disease, such as uncontrolled arrhythmia or Class 3 or 4 congestive heart failure as defined by the Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization.
    1. Unable to swallow capsules or malabsorption syndrome, disease significantly affecting gastrointestinal function, or resection of the stomach or small bowel, symptomatic inflammatory bowel disease or ulcerative colitis, or partial or complete bowel obstruction.
    1. Concomitant use of warfarin or other Vitamin K antagonists.
    1. Receipt of a strong cytochrome P450 (CYP) 3A inhibitor within 7 days prior to the first dose of ibrutinib or requirement for continuous treatment with a strong inhibitor.
    1. Chronic liver disease with hepatic impairment class B or C.
    1. Lactating or pregnant.
    1. Unwilling or unable to participate in all required study evaluations and procedures.
    1. Unable to understand the purpose and risks of the study and to provide a signed and dated form (ICF) and authorization to use protected health information (in accordance with national and local subject privacy regulations).
Terms in these criteria, in plain language(30)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

HER2

HER2 is a protein, made from the ERBB2 gene, that drives the growth of some cancers. A study may look for a level of the protein, extra copies of the gene, or a particular change in it.

In breast cancer, protein tests are read as HER2-positive, HER2-low or HER2-negative; other cancers use their own rules. Check which test result the study requires.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Leptomeningeal disease

Cancer that has spread to the leptomeninges, the thin layers covering the brain and spinal cord, and the fluid between them. It is not the same as brain metastases.

Criteria often treat it separately, and many studies leave it out even where treated brain metastases are allowed.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

Child-Pugh class

A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
34 participants (actual)

Study arms

  • Experimental
    Trastuzumab plus Ibrutinib 560 mg

    In Phase I, starting dose of Ibrutinib will be 560 mg orally per day. 3 patients will be enrolled first. If none of these have DLTs, 3 new patients will be enrolled at the next higher Ibrutinib dose level (840 mg orally per day). If 1 of these 3 patients have a DLT, expand this arm to 6 patients. If 2 or more of these 6 patients have a DLT, enroll 3 patients in lower dose lever (420 mg).

    Drug: Trastuzumab · Drug: Ibrutinib 560 mg

  • Experimental
    Trastuzumab plus Ibrutinib 840 mg

    If no patients in 560 mg arm have DLTs, this arm will be opened in Phase I to see how this higher dose is tolerated.

    Drug: Trastuzumab · Drug: Ibrutinib 840 mg

  • Experimental
    Trastuzumab plus Ibrutinib 420 mg

    If 2 or more patients in 560 mg arm have DLTs, this arm will be opened in Phase I to see how this lower dose is tolerated.

    Drug: Trastuzumab · Drug: Ibrutinib 420 mg

  • Experimental
    Phase II- Trastuzumab plus Maximum Tolerated Dose

    Maximum tolerated dose from Phase I will be used here in Phase II.

    Drug: Trastuzumab

Interventions

  • 8 mg/kg loading dose (first dose), followed by 6 mg/kg every 3 weeks, administered intravenously (IV)

    Also known as: Herceptin

  • 560 mg by mouth daily

    Also known as: Imbruvica, PCI-32765

  • 840 mg by mouth daily

    Also known as: Imbruvica, PCI-32765

  • 420 mg by mouth daily

    Also known as: Imbruvica, PCI-32765

06

What researchers measure

Primary outcomes

  1. Phase I: Maximum Tolerated Dose

    Highest dose of ibrutinib from Phase 1 (420, 560, or 840 mg by mouth daily) that had fewer than two dose-limiting toxicities in its respective cohort

    Time frame: 24 months

  2. Phase II: Clinical Benefit Rate

    To define the clinical benefit rate (CBR = CR \[complete response\] + PR \[partial response\] + SD \[stable disease\] \> 6 months) of ibrutinib plus trastuzumab in patients with HER2-amplified, T-DM1-pretreated MBC

    Time frame: 24 months

Secondary outcomes

  1. Objective Response Rate

    To determine the objective response rate (ORR = CR + PR) associated with ibrutinib plus trastuzumab.

    Time frame: 24 months

  2. Median Overall Survival

    To assess median overall survival (OS) associated with ibrutinib plus trastuzumab.

    Time frame: 24 months

  3. Median Progression-free Survival

    To assess median progression-free survival (PFS) associated with ibrutinib plus trastuzumab

    Time frame: 24 months

  4. Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability] of ibrutinib plus trastuzumab.

    Number of Adverse Events and Serious Adverse Events from informed consent signature to 30 days after last dose of study drug, using Common Terminology Criteria for Adverse Events version 4.0 (CTCAE v4.03: June 14, 2010)

    Time frame: 24 months

  5. Pharmacokinetic Analysis for Ibrutinib (Phase I only)- Cmax

    maximum (or peak) serum concentration that Ibrutinib achieves in Cycle 1 at indicated time points, and on Day 1 of cycle 3 for pharmacokinetic analysis

    Time frame: 24 months

  6. Pharmacokinetic Analysis for Ibrutinib (Phase I only)- Area under Curve

    Area Under the Curve of Ibrutinib in 24 hours

    Time frame: 24 months

Other outcomes

  1. Cytokine Gene Expression Analysis

    Changes in Th1- and Th2-related cytokine gene expression in whole blood, from Baseline to Week 12 to End of Treatment with ibrutinib plus trastuzumab, using NanoString human immunology gene panel.

    Time frame: 24 months

07

Study locations

1 site
  • 10 sites incl TX, WA, VA, and NV
    Dallas, Texas 75246, United States
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Nov 2017 (actual). Primary completion is estimated for Jan 2025, 86 months after the start.

Of 161 industry-sponsored phase 1/2 interventional studies under Breast Neoplasms, half reached primary completion within 59 months of starting (the median), counting those still running; a quarter within 44 and three quarters within 75. This study's planned 86 months is above that.

Counting every sponsor, half of 327 studies reached it within 61 months; a quarter within 45 and three quarters within 88.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 12, 2017
First posted
Dec 20, 2017
StartActual
Nov 29, 2017
Primary completionEst.
Jan 2025
CompletionEst.
Jan 2025
Last update
Dec 6, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 6, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03379428
Responsible party
Sponsor
First posted
Dec 20, 2017
Start date
Nov 29, 2017
Primary completion
Jan 2025 (estimated)
Completion
Jan 2025 (estimated)
Last update
Dec 6, 2024

Study contacts

Joyce O'Shaughnessy, MD
principal investigator · US Oncology Research/McKesson Specialty Health

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Dec 2024. You cannot join it, but the record below documents what was studied.

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Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

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Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Trastuzumab

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