ClinicalTrials.gg
Not yet recruitingNCT07806084Bone PainUpdated Sep 8, 2026

Correlation Between ANC and Bone Pain in Breast Cancer Patients Receiving Long-Acting G-CSF

An observational study in Breast Cancer, Chemotherapy-Induced Neutropenia and Febrile Neutropenia, sponsored by The First Affiliated Hospital with Nanjing Medical University. Not yet recruiting. Open to participants aged 18 Years to 69 Years. Per ClinicalTrials.gov, last updated 2026-09-08.

Sponsored by The First Affiliated Hospital with Nanjing Medical University · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
132
Ages
18 Years to 69 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 57 studies in Breast Neoplasms by The First Affiliated Hospital with Nanjing Medical University — 39 open to participants now, 40 under way, none of them phase 3. Breast Neoplasms · The First Affiliated Hospital with Nanjing Medical University.

Planned enrollment
6th of 13
132 · median 100
Started
2026
with 9 others
Observational
13 of 57
5 open now
Primary completion
2027-02
later than 24 of 39 live
Registered
57th of 57
by date

Among the 57 studies in Breast Neoplasms by The First Affiliated Hospital with Nanjing Medical University, this one is the 6th largest by planned enrollment of the 13 observational ones that give a count, is one of 10 that started in 2026, is one of 13 observational ones, reaches primary completion later than 24 of the 39 other live ones, and was the 57th registered.

Breast Neoplasms

14,829 studies on the registry are indexed under Breast Neoplasms; 3,318 are open to participants now.

Browse Breast Neoplasms studies →

Open to participants now

39 of the 57 studies in Breast Neoplasms by The First Affiliated Hospital with Nanjing Medical University are open now, in 1 country. Recruiting first, the newest first:

34 more — sign in →

By country, each count listing its studies:

All 39 open studies →

Where they have run

Who these studies take

Of the 2,398 Breast Neoplasms studies recruiting now, 1,569 (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 to 69 Years · all sexes · no healthy volunteers.

The full table on the hub →

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 57 studies in Breast Neoplasms by The First Affiliated Hospital with Nanjing Medical University, or all of them as a file.
02

Study summary

This prospective, multicenter, non-randomized controlled study aims to evaluate bone pain associated with prophylactic use of long-acting granulocyte colony-stimulating factors (G-CSFs) in patients with breast cancer receiving chemotherapy with a moderate-to-high risk of febrile neutropenia (FN).

A total of 132 patients with breast cancer receiving neoadjuvant or adjuvant chemotherapy will be enrolled at 7 study centers in China. According to the long-acting G-CSF selected by the treating physician in routine clinical practice, patients will be included in either the Telpegfilgrastim group or the non-Telpegfilgrastim group. Telpegfilgrastim is administered as a fixed 2 mg subcutaneous dose 24 hours after chemotherapy. Patients in the non-Telpegfilgrastim group receive another approved long-acting G-CSF according to the physician's clinical decision.

The study will assess the incidence and duration of bone pain during the first chemotherapy cycle as the primary outcome. Bone pain during subsequent chemotherapy cycles, use of treatment for bone pain, and dose reduction or switching of long-acting G-CSF will also be evaluated. Absolute neutrophil count (ANC) and other laboratory parameters will be monitored during treatment to explore the relationship between neutrophil changes and bone pain.

03

Conditions studied

  • Breast Cancer
  • Chemotherapy-Induced Neutropenia
  • Febrile Neutropenia
  • Bone Pain
04

Who can participate

Ages eligible
18 Years to 69 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients with breast cancer receiving neoadjuvant or adjuvant chemotherapy with anthracycline- and/or taxane-containing regimens associated with a moderate-to-high risk of febrile neutropenia will be enrolled from 7 participating centers in China. Eligible patients receive prophylactic long-acting G-CSF according to the treating physician's clinical decision and are classified into the Telpegfilgrastim cohort or the other long-acting G-CSF cohort. Patients are followed for at least 3 chemotherapy cycles to evaluate bone pain, neutrophil counts, treatment for bone pain, and changes in long-acting G-CSF use.

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. or cytologically confirmed breast cancer.
  2. Patients considered by the investigator to be suitable for or adjuvant chemotherapy with an anthracycline- and/or taxane-containing regimen administered in 21-day cycles, and expected to receive at least 3 chemotherapy cycles.
  3. Age ≥18 years and \<70 years.
  4. Body weight ≥45 kg.
  5. (ECOG) performance status ≤2.
  6. Adequate baseline white blood cell and before chemotherapy: white blood cell count (WBC) ≥3.5 × 10\^9/L and absolute neutrophil count (ANC) ≥1.5 × 10\^9/L.
  7. Expected survival ≥3 months.
  8. Willing to participate in the study, able to understand the study procedures, and able to provide written .

Exclusion criteria

Exclusion Criteria:

  1. Previous or anticipated large-field radiotherapy involving >25% of the total bone marrow.
  2. Significant dysfunction of major organs, including heart, lung, liver, or kidney; liver function abnormalities defined as or total >2.5 × , or >5 × ULN in patients with liver ; virus infection, virus infection, or cirrhosis; or serum creatinine >1.5 × ULN.
  3. Pregnant or breastfeeding women.
  4. Previous or ongoing bone marrow transplantation or organ transplantation.
  5. Known to G-CSF or any component of a G-CSF product.
  6. Patients who are unable to reliably understand or report their medical condition.
  7. Any other condition that, in the investigator's judgment, makes the patient unsuitable for participation in the study.
Terms in these criteria, in plain language(12)

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.

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.

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.

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.

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.

Metastases

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

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.

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.

05

Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
132 participants (estimated)
Patient registry
No

Groups and cohorts

  • Telpegfilgrastim Cohort

    Patients with breast cancer who receive telpegfilgrastim for prophylaxis of chemotherapy-induced neutropenia according to the treating physician's clinical decision. Telpegfilgrastim is administered at a fixed dose of 2 mg by subcutaneous injection 24 hours after chemotherapy, once per chemotherapy cycle.

  • Other Long-acting G-CSF Cohort

    Patients with breast cancer who receive a long-acting G-CSF other than telpegfilgrastim for prophylaxis of chemotherapy-induced neutropenia according to the treating physician's clinical decision. The long-acting G-CSF may include PEG-rhG-CSF, mecapegfilgrastim, or efbemalenograstim alfa, administered according to the approved dose and routine clinical practice.

06

What researchers measure

Primary outcomes

  1. Incidence of bone pain during Cycle 1

    The number and proportion of participants who experience bone pain during the first chemotherapy cycle will be assessed in the Telpegfilgrastim cohort and the other long-acting G-CSF cohort. Bone pain will be evaluated using the Numeric Rating Scale (NRS), ranging from 0 to 10.

    Time frame: During Cycle 1, up to 21 days after chemotherapy

  2. Duration of bone pain during Cycle 1

    The duration of bone pain will be defined as the number of consecutive days with bone pain after administration of the long-acting G-CSF during the first chemotherapy cycle.

    Time frame: During Cycle 1, up to 21 days after chemotherapy

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No — Individual participant data sharing is not planned. Study data will be managed in accordance with the approved study protocol, institutional requirements, and applicable participant privacy and data confidentiality requirements.

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

Start is estimated for Sep 2026; primary completion for Feb 2027, 4 months later.

Of 1,192 non-industry observational studies under Breast Neoplasms, half reached primary completion within 58 months of starting (the median), counting those still running; a quarter within 25 and three quarters within 138. This study's planned 4 months is below that.

Counting every sponsor, half of 1,381 studies reached it within 55 months; a quarter within 25 and three quarters within 125.

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

Registered
Sep 2, 2026
First posted
Sep 8, 2026
StartEst.
Sep 30, 2026
Primary completionEst.
Feb 26, 2027
CompletionEst.
Mar 26, 2027
Last update
Sep 8, 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.
No changes since tracking began. The registry record was last updated on Sep 8, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07806084
Responsible party
Sponsor
First posted
Sep 8, 2026
Start date
Sep 30, 2026 (estimated)
Primary completion
Feb 26, 2027 (estimated)
Completion
Mar 26, 2027 (estimated)
Last update
Sep 8, 2026

Study contacts

Wei Li
Contact
1155073041@link.cuhk.edu.hk
+86 13851603656

Oversight

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 Sep 2026. You cannot join it, but the record below documents what was studied.

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