ClinicalTrials.gg
WithdrawnNCT03285607Updated Aug 16, 2018

MCS110 Combined With Neoadjuvant Doxorubicin, Cyclophosphamide, and Weekly Paclitaxel in Patients With Hormone-Receptor Positive and HER2- Breast Cancer

A Phase 1 interventional study of MCS110 and Doxorubicin in Breast Cancer and Cancer of Breast, sponsored by Washington University School of Medicine. Withdrawn. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-08-16.

Sponsored by Washington University School of Medicine · Phase 1, Interventional, and Treatment

Why this study was withdrawn
Drug provider decided not to move forward with the study.
Phase
Phase 1
Study type
Interventional
Enrollment
0
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

In patients with locally advanced hormone receptor positive (HR+)/HER2- breast cancer, neoadjuvant chemotherapy produces a pathologic complete response rate (pCR) of only 9-15%, and late recurrences often occur despite neoadjuvant chemotherapy. Therefore, there is an unmet clinical need to improve the outcomes of these patients. Tumor-associated macrophages (TAM) infiltration leads to poor outcomes in breast cancer patients by promoting angiogenesis, activating epithelial-mesenchymal transition, degrading the extracellular matrix, and suppressing the anti-tumor immune response. Pre-clinical studies, as summarized above, have shown that the breast cancer immune microenvironment may be reprogrammed by targeting colony-stimulating factor-1 (CSF-1) to decrease TAM infiltration and increase CD8+ TIL infiltration, in order to foster antitumor immunity and improve response to therapy.

Here, the investigators propose a phase I dose-escalation study in patients with locally advanced HR+/HER2- breast cancer to determine the feasibility of adding MCS110, a CSF-1 inhibitor, to the standard neoadjuvant chemotherapy regimen of dose-dense doxorubicin, cyclophosphamide followed by paclitaxel. The investigators will also include a dose expansion cohort for preliminary efficacy analysis and correlative studies. The investigators propose that if they can decrease the TAM-induced immunosuppression and TAM-induced chemoresistance observed in breast cancer patients, then the patients' own immune system could find and destroy the dormant and resistant tumor cells, and combined with enhanced chemotherapy efficacy, the investigators will see durable remissions and long term cures.

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Conditions studied

  • Breast Cancer
  • Cancer of Breast

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03

In context

Breast Neoplasms

14,825 studies on the registry are indexed under Breast Neoplasms; 3,319 are open to participants now.

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Lead sponsor

Washington University School of Medicine is the lead sponsor of 1,803 studies on the registry; 271 are open to participants now.

Of its 329 completed or terminated interventional studies of FDA-regulated products, 216 (66%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
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

  • or cytologically confirmed ER+ - breast cancer. ER-positivity is to follow local guidelines. If IHC HER2 is 2+, a negative FISH test is required.
  • Clinical stage II or stage III (by AJCC 7th edition) breast cancer eligible for chemotherapy with complete surgical excision of the breast cancer after neoadjuvant therapy as the treatment goal.
  • Clinically positive axillary lymph nodes.
  • At least 18 years of age.
  • (ECOG) performance status ≤ 2
  • Normal bone marrow and organ function as defined below:

    • ≥ 1,500/mcL
    • ≥ 100,000/mcL
    • ≥ 9.0 g/dL
    • Total ≤ 1.5 x institutional (IULN)
    • (SGOT)/ALT(SGPT) ≤ 3.0 x IULN
    • Creatinine ≤ 1.5 x IULN
    • ≤ 1.5 x IULN (for participants on anticoagulation therapy, ≤ 1.5 x baseline value)
    • aPTT ≤ 1.5 x IULN (for participants on anticoagulation therapy, ≤ 1.5 x baseline value)
  • Adequate cardiac function as defined below:

    • ≥ 50%
    • QTC ≤ 470 msec for females and ≤ 450 msec for males
  • Women of and men must agree to use adequate (hormonal or barrier method of birth control, abstinence) prior to study entry, for the duration of study participation, and for 90 days after the last dose of MCS110. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she must inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and for 4 month after completion of MCS110 administration.
  • Ability to understand and willingness to sign an Institutional Review Board (IRB) approved written document (or that of legally authorized representative, if applicable).

Exclusion criteria

Exclusion Criteria:

  • Presence of disease.
  • Therapy for underlying within 2 weeks prior to start of study treatment.
  • A history of other malignancy ≤ 3 years previous with the exception of basal cell or squamous cell carcinoma of the skin which were treated with local resection only or carcinoma in situ of the cervix.
  • Bilateral or inflammatory breast cancer.
  • Currently receiving any other agents.
  • Receiving agents or > 10 mg daily prednisone or equivalent of .
  • A history of allergic reactions attributed to compounds of similar chemical or biologic composition to MCS110, doxorubicin, cyclophosphamide, paclitaxel, or other agents used in the study.
  • Known to monoclonal antibodies.
  • Personal or family history of long syndrome.
  • Evidence of retinal pathology on ophthalmologic examination that is considered a risk factor for neurosensory retinal detachment / central serous chorioretinopathy (CSCR), retinal vein occlusion (RVO), or neovascular macular degeneration.
  • Diagnosis of any type of muscle disease that may result in CK elevation.
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, or cardiac arrhythmia. cardiovascular disease within 6 months of screening.
  • Presence of any (CTCAE) grade 2 or greater toxicity.
  • Pregnant and/or breastfeeding. Women of must have a negative pregnancy test within 14 days of study entry.
  • Known history of or infection with hepatitis requiring antiviral therapy.
Terms in these criteria, in plain language(25)

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.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

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.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

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.

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).

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.

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.

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.

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.

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.

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.

Metastases

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

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.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

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.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

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.

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.

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Study design

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

Study arms

  • Experimental
    Dose Level 1:MCS110/Doxorubicin/Cyclophosphamide/Paclitaxel

    * MCS110 will be administered intravenously over 60 minutes (up to 120 minutes permitted) on a 28-day cycle. The dose of MCS110 given will depend on the dose level to which a given patient is enrolled. * The standard neoadjuvant chemotherapy regimen of dose-dense doxorubicin/ cyclophosphamide followed by weekly paclitaxel consists of: * doxorubicin 60 mg/m\^2 IV Q2W during Weeks 1 through 8 (total of 4 doses) * cyclophosphamide 600 mg/m\^2 Q2W during Weeks 1 through 8 (total of 4 doses) * paclitaxel 80 mg/m\^2 IV QW during Weeks 9 through 20 (total of 12 doses) * Surgery will be performed approximately 4-6 weeks after the end of the last cycle of treatment (Week 20-22). It is outside the scope of this study as part of each patient's standard of care. Both types of surgery (lumpectomy or mastectomy) are allowed. The decision on surgical approach and timing will be at the discretion of the treating surgeon.

    Biological: MCS110 · Drug: Doxorubicin · Drug: Cyclophosphamide · Drug: Paclitaxel · Procedure: Bone marrow aspirate · Procedure: Peripheral blood samples · Procedure: Tumor tissue

  • Experimental
    Dose Level 2:MCS110/Doxorubicin/Cyclophosphamide/Paclitaxel

    * MCS110 will be administered intravenously over 60 minutes (up to 120 minutes permitted) on a 28-day cycle. The dose of MCS110 given will depend on the dose level to which a given patient is enrolled. * The standard neoadjuvant chemotherapy regimen of dose-dense doxorubicin/ cyclophosphamide followed by weekly paclitaxel consists of: * doxorubicin 60 mg/m\^2 IV Q2W during Weeks 1 through 8 (total of 4 doses) * cyclophosphamide 600 mg/m\^2 Q2W during Weeks 1 through 8 (total of 4 doses) * paclitaxel 80 mg/m\^2 IV QW during Weeks 9 through 20 (total of 12 doses) * Surgery will be performed approximately 4-6 weeks after the end of the last cycle of treatment (Week 20-22). It is outside the scope of this study as part of each patient's standard of care. Both types of surgery (lumpectomy or mastectomy) are allowed. The decision on surgical approach and timing will be at the discretion of the treating surgeon.

    Biological: MCS110 · Drug: Doxorubicin · Drug: Cyclophosphamide · Drug: Paclitaxel · Procedure: Bone marrow aspirate · Procedure: Peripheral blood samples · Procedure: Tumor tissue

  • Experimental
    Dose Expansion:MCS110/Doxorubicin/Cyclophosphamide/Paclitaxel

    * MCS110 will be administered intravenously over 60 minutes (up to 120 minutes permitted) on a 28-day cycle. The dose of MCS110 given will depend on the dose level to which a given patient is enrolled. * The standard neoadjuvant chemotherapy regimen of dose-dense doxorubicin/ cyclophosphamide followed by weekly paclitaxel consists of: * doxorubicin 60 mg/m\^2 IV Q2W during Weeks 1 through 8 (total of 4 doses) * cyclophosphamide 600 mg/m\^2 Q2W during Weeks 1 through 8 (total of 4 doses) * paclitaxel 80 mg/m\^2 IV QW during Weeks 9 through 20 (total of 12 doses) * Surgery will be performed approximately 4-6 weeks after the end of the last cycle of treatment (Week 20-22). It is outside the scope of this study as part of each patient's standard of care. Both types of surgery (lumpectomy or mastectomy) are allowed. The decision on surgical approach and timing will be at the discretion of the treating surgeon.

    Biological: MCS110 · Drug: Doxorubicin · Drug: Cyclophosphamide · Drug: Paclitaxel · Procedure: Bone marrow aspirate · Procedure: Peripheral blood samples · Procedure: Tumor tissue

Interventions

  • BiologicalMCS110

    -MCS110 is an IgG1/κ humanized monoclonal antibody directed against human macrophage colony stimulating factor

  • -Standard of care

    Also known as: Adriamycin®

  • -Standard of care

    Also known as: Cytoxan, CPM, CTX, CYT

  • -Standard of care

    Also known as: Taxol

  • ProcedureBone marrow aspirate

    -Time of enrollment and at time of surgery

  • ProcedurePeripheral blood samples

    -Time of enrollment and at time of surgery

  • ProcedureTumor tissue

    -Time of enrollment and at time of surgery

06

What researchers measure

Primary outcomes

  1. Maximum tolerated dose (MTD) of regimen

    * The maximum tolerated dose (MTD) is defined as the dose level at which \<1 patients of a cohort (of 3 to 6 patients) experience dose-limiting toxicity during the first cycle. * A dose-limiting toxicity (DLT) is defined as an adverse event or abnormal laboratory value of CTCAE Grade ≥ 3 assessed as unrelated to disease, disease progression, intercurrent illness, or concomitant medications that occurs within the first cycle of treatment with the combination treatment and meets any of the criteria outlined.

    Time frame: Completion of cycle 1 (28 days) for all patients

Secondary outcomes

  1. Safety and tolerability of regimen as measured by grade and number of adverse events experienced per participant

    -The descriptions and grading scales found in the revised NCI Common Terminology Criteria for Adverse Events (CTCAE) version 4.0 will be utilized for all toxicity reporting.

    Time frame: 30 days after completion of treatment (approximately 24 weeks)

  2. Pathologic complete response-rate (pCR)

    -Pathologic complete response (pCR) is defined as no histology evidence of invasive tumor cells in the surgical breast specimen and sentinel or axillary lymph nodes. All eligible patients who have completed neoadjuvant therapy and have subsequently undergone surgery are included in the analysis of pCR.

    Time frame: At the time of surgery (approximately 20 weeks)

  3. Residual invasive tumor size (RITS)

    -Residual invasive tumor size (RITS) is histopathologically assessed by the largest dimension of the dominant invasive tumor focus from the surgical specimen. In cases in which there was no residual invasive tumor, the RITS will be 0 mm. In cases in which multifocal pathology is present, the largest dimension of the residual invasive tumor focus will be recorded.

    Time frame: At the time of surgery (approximately 20 weeks)

  4. Number of positive axillary lymph nodes

    -Number of positive axillary lymph nodes is defined as number of resected lymph nodes with axillary nodal micrometastases (\>0.2-\<2 mm) or overt metastases (⩾2 mm).

    Time frame: At the time of surgery (approximately 20 weeks)

07

Study locations

No study locations are listed for this record.

08

References and documents

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 16, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03285607
Responsible party
Sponsor
First posted
Sep 18, 2017
Start date
Sep 30, 2018 (estimated)
Primary completion
Oct 31, 2019 (estimated)
Completion
Feb 28, 2021 (estimated)
Last update
Aug 16, 2018

Study contacts

Leonel Hernandez-Aya, M.D.
principal investigator · Washington University School of Medicine

Oversight

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

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This study is withdrawn, as verified in Aug 2018. You cannot join it, but the record below documents what was studied.

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