ClinicalTrials.gg
Not yet recruitingNCT05291910Updated Mar 23, 2022

Inetetamab Combined With Anti-PD-1 Monoclonal Antibody and Albumin-Bound Paclitaxel for HER2+ Metastatic Breast Cancer

A Phase 4 interventional study of Inetetamab and Toripalimab in Breast Cancer, sponsored by Chinese Academy of Medical Sciences. Not yet recruiting at 1 site in China. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-03-23.

Sponsored by Chinese Academy of Medical Sciences · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Dec 2024, 1 year 10 months ago, but the record still lists the study as not yet recruiting.
Phase
Phase 4
Study type
Interventional
Enrollment
70
Allocation
Not applicable
Ages
18 Years and older
Sex
Female
01

Study summary

This is a multi-center, prospective, interventional, single-arm clinical trial. In the study, patients with her2-positive recurrent or metastatic breast cancer who were initially treated were included. The purpose of this study is to evaluate the efficacy and safety of Inetetamab combined with anti-PD-1 monoclonal antibody and albumin-bound paclitaxel for HER2+ Metastatic Breast Cancer.

Read the detailed description

This is a multi-center, prospective, interventional, single-arm clinical trial. In the study, patients with her2-positive recurrent or metastatic breast cancer who were initially treated were included. The purpose of this study is to evaluate the efficacy and safety of Inetetamab combined with anti-PD-1 monoclonal antibody and albumin-bound paclitaxel for HER2+ Metastatic Breast Cancer.To explore a new concept of anti-HER2 monoclonal antibody combined with immunotherapy in the treatment of recurrent or metastatic breast cancer. The primary end point is progression free survival (PFS). The secondary end points are objective response rate (ORR), Clinical Benefit Rate (CBR) and safety assessment.

02

Conditions studied

  • Breast Cancer

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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.

This study's planned enrollment of 70 is close to the median of 72 across 10,896 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

Chinese Academy of Medical Sciences is the lead sponsor of 237 studies on the registry; 19 are open to participants now.

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

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 patients aged > 18 years.
  2. Pathological diagnosis of was positive (definition: immunohistochemical results were + + + or ICH++ with fluorescence in situ hybridization results were positive).
  3. Participants must have or cytologically confirmed invasive breast cancer with locally recurrent or radiological evidence of disease.
  4. Patients with locally recurrent inoperable or metastatic HER2-positive breast cancer:

    1. patients with metastatic breast cancer at the time of initial diagnosis, meaning there was no previous history of breast cancer in the past; or
    2. patients with Locally recurrent or metastatic breast cancer, /adjuvant anti-HER2 therapy has been completed for ≥6 months.
  5. HER2-positive recurrent or metastatic BC patients who have received at most one anti-HER2 therapy after diagnosis;.
  6. -positive (cut-off ≥ 1% stained cells);
  7. Patients with assessable target lesion as per 1.1 and irRECIST criteria.
  8. PS score 0 or 1, estimated survival time ≥3 months, and can be followed-up.
  9. Cardiopulmonary function is basically normal.
  10. Liver function is basically normal.
  11. Have sufficient baseline hematology parameters.
  12. Coagulation Indicators: (INR) and activated partial thromboplastin time (aPTT) ≤ 1.5 times the , unless drugs known to change INR and aPTT are used.
  13. No history of serious heart, kidney and other important organs and endocrine disease.
  14. Female patients of childbearing age have a negative pregnancy test and voluntarily take effective and reliable measures.
  15. The patients voluntarily signed an form.

Exclusion criteria

Exclusion Criteria:

  1. Participated in other clinical trials within 4 weeks;
  2. Evidence of symptomatic central nervous system or pia mater disease.
  3. History of receiving CD137 agonists or checkpoint blockade therapy (including anti-0, , anti-PD-1, anti-PD-L1 monoclonal antibody therapy).
  4. History of receiving paclitaxel for injection (Albumin Bound) in chemotherapy for advanced disease.
  5. History of disease Including but not limited to systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease (IBD), etc.
  6. drugs required within 2 weeks before enrollment or during this study. The following conditions are excluded: 1) intranasal, inhalation, topical or local injection (e.g., intra articular injection); 2) physiological doses of systemic corticosteroids (≤ 10 mg/day prednisone or equivalent dose); 3) short term (≤ 7 days) use of steroids to prevent or treat non-autoimmune allergic diseases.
  7. History of acute or chronic virus (HBV), or virus (HCV).
  8. History of primary or acquired immunodeficiency (including -positive).
  9. History of to the study medication
  10. Pregnancy or lactation.
  11. History of myocardial infarction within 6 months before enrollment, congestive heart failure ( [NYHA] Classes ≥ II), severe arrhythmia beyond drug control, or a decrease in to \< 50% with previous trastuzumab or adjuvant treatment.
  12. History of other malignant disease within 5 years (except cured of in-situ carcinoma of the cervix, basal cell carcinoma of the skin and squamous cell carcinoma).
  13. Participants who were judged by the investigator to be unsuitable for this study .
Terms in these criteria, in plain language(22)

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.

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.

Metastases

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

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.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

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.

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.

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.

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.

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.

CD4 count

The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. 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.

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.

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.

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
70 participants (estimated)

Study arms

  • Experimental
    Inetetamab+ Toripalimab+ Albumin-Bound Paclitaxel

    Drug: Inetetamab Initial dose of 8 mg/kg over 90 minutes IV infusion, then 6 mg/kg over 30 to 90 minutes IV infusion every three weeks Drug: Toripalimab 240mg intravenously every 3 weeks Drug: Albumin-Bound Paclitaxel 130mg/m2, IV , D1, D8, q3w

    Drug: Inetetamab · Drug: Toripalimab · Drug: Albumin-Bound Paclitaxel

Interventions

  • Initial dose of 8 mg/kg over 90 minutes IV infusion, then 6 mg/kg over 30 to 90 minutes IV infusion every three weeks

  • 240mg intravenously every 3 weeks

  • 130mg/m2, IV , D1, D8, q3w

06

What researchers measure

Primary outcomes

  1. Progression free survival (PFS)

    PFS is defined as the time from the date of the first dose until first evidence of disease progression or death based on investigator assessment using RECIST 1.1 and irRECIST.

    Time frame: Assessed up to approximately 24 months

Secondary outcomes

  1. Objective response rate (ORR)

    ORR is defined as the percentage of participants who have a complete response (CR) or partial response (PR) based on CT/MRI, investigator assessment using RECIST 1.1 and irRECIST.

    Time frame: Assessed up to approximately 24 months

  2. Clinical benefit rate (CBR)

    CBR is defined as the percentage of evaluable participants with best objective response of confirmed complete response or partial response per RECIST 1.1 and irRECIST, or prolonged stable disease (≥ 6 months).

    Time frame: Assessed up to approximately 24 months

  3. Safety assessment (AEs and SAEs)

    Adverse Events (AEs) and Serious Adverse Events (SAEs)

    Time frame: From the time of inform consent form signature until 30 days after end of treatment

07

Study locations

1 site
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 23, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05291910
Responsible party
Binghe Xu (Director of Breast Cancer Section, Cancer Institute and Hospital, Chinese Academy of Medical Sciences) — Principal investigator
First posted
Mar 23, 2022
Start date
Mar 12, 2022 (estimated)
Primary completion
Dec 31, 2024 (estimated)
Completion
Dec 31, 2025 (estimated)
Last update
Mar 23, 2022

Study contacts

Binghe Xu, MD
Contact
xubinghe@medail.com.cn
010-67781331
Ying Fan, MD
Contact
pearloffan@163.com
010-67781331
Binghe Xu, MD
principal investigator · Director of Breast Cancer Section

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Mar 2022. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Inetetamab

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