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RecruitingNCT07900516Updated Oct 28, 2026

A Prospective, Phase II, Exploratory Study Protocol of a Chemotherapy Sensitivity-based Culmerciclib Combination Regimen in Neoadjuvant Therapy for HR+/HER2- Breast Cancer.

A Phase 2 interventional study of Kumoxili and Docetaxel in Breast Cancer, sponsored by The First Affiliated Hospital with Nanjing Medical University. Recruiting at 1 site in China. Open to female participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-10-28.

Sponsored by The First Affiliated Hospital with Nanjing Medical University · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Started Aug 2026; still recruiting 3 months later.
Updated Oct 28, 2026Newly registeredGo to Updates ↓
Phase
Phase 2
Study type
Interventional
Enrollment
48
Allocation
Not applicable
Ages
18 Years to 75 Years
Sex
Female
01

Study summary

To explore the efficacy and safety of Culmerciclib combined with chemotherapy as neoadjuvant therapy for HR+/HER2- breast cancer patients who are insensitive to neoadjuvant TAC (docetaxel, doxorubicin, cyclophosphamide) chemotherapy.

02

Conditions studied

  • Breast Cancer

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Keywords

  • HR+/HER2- early breast cancer
  • Neoadjuvant therapy
  • Neoadjuvant endocrine therapy
  • CDK
  • CDK4/6i
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 48 is below the median of 72 across 10,896 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

The First Affiliated Hospital with Nanjing Medical University is the lead sponsor of 568 studies on the registry; 317 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 75 Years
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. Initially diagnosed with stage II-III breast cancer according to the AJCC 8th edition staging system.
  2. Premenopausal or perimenopausal patients (who must receive ovarian function suppression [OFS], including bilateral oophorectomy or GnRHa [GnRH agonists]), or patients.
  3. Histopathologically confirmed HR+/- breast cancer: estrogen receptor (ER)-positive (>10%), regardless of progesterone receptor (PR) expression level; HER2-negative invasive breast carcinoma as per the 2018 ASCO-CAP HER2-negative interpretation guidelines, confirmed by the pathology laboratory as immunohistochemistry (IHC) 0, 1+, or 2+ with negative in situ hybridization (ISH) (HER2/CEP17 ratio \<2.0).
  4. Female patients aged 18-75 years (inclusive).
  5. (ECOG) performance status of 0 or 1.
  6. ≥12 weeks.
  7. At least one according to version 1.1.
  8. Adequate organ function as defined by:

Hematology: (ANC) >=1.5×10⁹/L; count (PLT) ≥100×10⁹/L; (Hb) >=90 g/L.

Blood biochemistry: total (TBIL) =\<1.5× (ULN); (ALT) and aspartate aminotransferase (AST) =\<3×ULN; blood urea nitrogen (BUN) and creatinine (Cr) =\<1.5×ULN, and >=50 mL/min.

9.12-lead (ECG) with ≤480 ms. 10.Willing to voluntarily participate, provide written , and comply with study visits and follow up.

Exclusion criteria

Exclusion Criteria:

  1. Prior receipt of any form of anti tumor therapy (including chemotherapy, radiotherapy, molecularly targeted therapy, endocrine therapy, etc.).
  2. Concurrent use of other anti tumor drugs.
  3. Stage IV breast cancer.
  4. Breast cancer not confirmed by histopathology.
  5. Other within the past 5 years, except for cured cervical carcinoma in situ, basal cell carcinoma, or squamous cell carcinoma of the skin.
  6. Severe dysfunction of vital organs such as heart, liver, or kidneys.
  7. Inability to swallow, chronic diarrhea, or intestinal obstruction, or any condition that may affect oral drug absorption.
  8. Participation in another drug clinical trial within 4 weeks prior to enrollment.
  9. History of immunodeficiency, including positive test, positive antibodies, active virus infection (HBsAg positive with detectable HBV DNA), or other acquired/congenital immunodeficiency diseases, or history of organ transplantation.
  10. Known to any component of the study drugs.
  11. Any cardiac disease, including: arrhythmia requiring medication or ; myocardial infarction; heart failure; or any other cardiac condition deemed by the investigator as unsuitable for participation.
  12. Pregnant or breastfeeding women, or women of with a positive baseline pregnancy test.
  13. Concurrent medical conditions that, in the investigator's judgment, may compromise patient safety or interfere with study completion (including but not limited to severe hypertension not controlled by medication, severe diabetes, active infections, etc.).
Terms in these criteria, in plain language(23)

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.

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).

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.

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.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

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).

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.

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.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

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.

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.

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
48 participants (estimated)

Study arms

  • Experimental
    Adaptive Culmerciclib Neoadjuvant Therapy for HR+/HER2- Breast Cancer

    Drug: Kumoxili · Drug: Docetaxel · Drug: Epirubicin · Drug: Cyclophosphamide · Drug: Letrozole · Drug: Everolimus (Afinitor®)

Interventions

06

What researchers measure

Primary outcomes

  1. ORR

    Objective Response Rate

    Time frame: up to 18 weeks

Secondary outcomes

  1. Change in Ki67 from Baseline to Surgery

    Time frame: up to 18 weeks

  2. Change in Ki67 from Week 2 to Surgery

    Time frame: Week 2 to surgery

  3. CCCA

    Complete Cell Cycle Arrest

    Time frame: Day 15 of Cycle 1(each cycle is 28 days)

  4. pCR

    Pathologic Complete Response

    Time frame: At surgery

  5. RCB 0-1

    Residual Cancer Burden 0-1

    Time frame: At surgery

  6. Incidence and Severity of AEs/SAEs

    Time frame: Informed consent to 30 days post-last dose

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

1 registry update 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 Aug 2026 (actual). Primary completion is estimated for Aug 2028, 24 months after the start.

Of 1,070 non-industry phase 2 interventional studies under Breast Neoplasms, half reached primary completion within 56 months of starting (the median), counting those still running; a quarter within 34 and three quarters within 87. This study's planned 24 months is below that.

Counting every sponsor, half of 1,302 studies reached it within 51 months; a quarter within 30 and three quarters within 82.

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

Registered
Aug 5, 2026
First posted
Oct 28, 2026
StartActual
Aug 1, 2026
Primary completionEst.
Aug 1, 2028
CompletionEst.
Aug 1, 2028
Last update
Oct 28, 2026
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.
Registered
First appeared on the registry. No changes since
Oct 28, 2026
Show all 1 update
  1. Oct 28, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07900516
Responsible party
Wenbin Zhou (Professor, The First Affiliated Hospital with Nanjing Medical University) — Principal investigator
First posted
Oct 28, 2026
Start date
Aug 1, 2026
Primary completion
Aug 1, 2028 (estimated)
Completion
Aug 1, 2028 (estimated)
Last update
Oct 28, 2026

Study contacts

Wenbi Zhou, Professor
Contact
Zhouwenbin@njmu.edu.cn
025-68308162

Oversight

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

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Studies of the drugs tested here: Docetaxel · Cyclophosphamide

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