ClinicalTrials.gg
RecruitingNCT07724756Updated Jul 24, 2026

Phase II Study of QLC2519 in Pediatric Solid Tumor Participants

A Phase 2 interventional study of Albipagrastim alf in Pediatric Malignant Solid Tumor, Febrile Neutropenia (FN) and Neutropenia, sponsored by Qilu Pharmaceutical Co., Ltd.. Recruiting at 1 site in China. Open to participants aged 0 Years to 18 Years. Per ClinicalTrials.gov, last updated 2026-07-24.

Sponsored by Qilu Pharmaceutical Co., Ltd. · Phase 2, Interventional, and Prevention

Phase
Phase 2
Study type
Interventional
Enrollment
18
Allocation
Not applicable
Ages
0 Years to 18 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 20 studies in Febrile Neutropenia with a site in China — 8 open to participants now, 8 under way, none of them phase 3. Febrile Neutropenia · China.

Planned enrollment
17th of 17
18 · median 150
Started
2026
the only one that year
Phase 2
8 of 20
4 open now
Registered
19th of 20
by date
Lead sponsor
2 of 20
Qilu Pharmaceutical Co., Ltd.

Among the 20 studies in Febrile Neutropenia with a site in China, this one is the 17th largest by planned enrollment of the 17 interventional ones that give a count, is the only one that started in 2026, is one of 8 in phase 2, and was the 19th registered.

Febrile Neutropenia

147 studies on the registry are indexed under Febrile Neutropenia; 36 are open to participants now.

This study's planned enrollment of 18 is below the median of 120 across 95 interventional studies indexed under Febrile Neutropenia.

Browse Febrile Neutropenia studies →

Open to participants now

8 of the 20 studies in Febrile Neutropenia with a site in China are open now.

All 8 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 19 Febrile Neutropenia studies recruiting now, 11 (58%) set no upper age limit and 8 (42%) stop at 75 or younger; 4 take children under 18; 0 take healthy volunteers.

This study: 0 Years to 18 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 20 studies in Febrile Neutropenia with a site in China, or all of them as a file.
02

Study summary

QLC2519 (Mai Li Sheng®) is a new protein drug created by fusing the N-terminal of highly active modified G-CSF with the C-terminal of HSA. The modified G-CSF retained high activity while reducing affinity for the G-CSF receptor, which can significantly inhibit the the G-CSF receptor-mediated (RMC) pathway. The aim of this study is to evaluate the PK/PD characteristics of QLC2519 in preventing chemotherapy-induced neutropenia (CIN) in children with sarcoma.

Read the detailed description

This study is a multicenter, open lable Phase II study planed to enroll 18 children with pediatric sarcoma. The participants will receive the VDC/IE chemotherapy regimen (VDC: vincristine, doxorubicin, cyclophosphamide; IE: ifosfamide, etoposide) and will be scheduled to undergo 3 chemotherapy cycles (21 days per cycle). The participants will be stratified by age (\<6 years, 6 to \<12 years, 12 to \<18 years), with enrollment progressing from the older to the younger age groups (6 in each group).

03

Conditions studied

  • Pediatric Malignant Solid Tumor
  • Febrile Neutropenia (FN)
  • Neutropenia

Keywords

  • Pediatric Malignant Solid Tumor
  • Children
  • Albipagrastim alfa for Injection
  • neutropenia
  • Febrile neutropenia (FN)
04

Who can participate

Ages eligible
0 Years to 18 Years
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

  • Age 0-18 years (excluding boundary values), any gender;
  • Participant diagnosed with pediatric sarcoma based on pathological histology;
  • Participant was suitable for receiving the VDC/IE chemotherapy regimen, and planning to receive at least 3 chemotherapy cycles (VDC: vincristine, doxorubicin, cyclophosphamide; IE: ifosfamide, etoposide);
  • ≤1;
  • Expected survival ≥3 months, and expected to complete the 3 chemotherapy cycles specified in the regimen;
  • Hematology, liver function, and renal function before the first administration of chemotherapy drugs meet the following requirements:
  • Hematology: (ANC) in peripheral blood ≥2.0×10\^9/L (or above the lower limit of normal); count (PLT) ≥100×10\^9/L; (HGB) ≥90 g/L; white blood cell count (WBC) ≥4.0×10\^9/L;
  • Liver function: total (TBIL) ≤1.5×, (ALT) and aspartate aminotransferase (AST) ≤1.5×ULN; for patients with liver , ALT and AST ≤2.5×ULN;
  • Renal function: serum creatinine (Cr) ≤1.5×ULN or rate (CCr) ≥60 mL/min;
  • Normal bone marrow hematopoietic function, no bleeding tendency ( \<1.5);
  • Female participants of potential reproductive ability (post-menarche) are neither pregnant nor breastfeeding; participants of potential reproductive ability (e.g., females post-menarche or males post-spermarche) must agree to use effective from the time of signing the until at least 3 months after the last administration.

Exclusion criteria

Exclusion Criteria:

  • Tumor had metastasized to or invaded the bone marrow;
  • Previously received chemotherapy or radiotherapy;
  • Planned surgery or radiotherapy during the trial (excluding the follow-up period);
  • Presence of other malignant tumors besides sarcoma (participants with previously cured malignant tumors with no recurrence within the past 5 years may be included in this study);
  • Primary central nervous system tumor or existing central nervous system involvement, or suspected central nervous system based on clinical manifestations, deemed unsuitable for participation in this study by the investigator;
  • History of primary hematologic diseases, including but not limited to leukemia, myelodysplastic syndromes, aplastic anemia, sickle cell anemia, congenital neutropenia, or cyclic neutropenia;
  • Previously received or planned to undergo bone marrow transplantation, hematopoietic stem cell transplantation, or organ transplantation during the trial;
  • Diseases with severe cardiac dysfunction, including but not limited to poorly controlled arrhythmia or heart failure;
  • Diseases with severe pulmonary dysfunction, including but not limited to pulmonary embolism, lung abscess, or acute respiratory distress syndrome;
  • Presence of splenomegaly or diseases that may cause splenomegaly (such as liver cirrhosis, Gaucher disease, glycogen storage disease, Niemann-Pick disease, etc.), considered unsuitable for participation in this study by the investigator;
  • Presence of acute infectious disease or chronic infectious disease in the active phase at screening, such as patients who are hepatitis B surface antigen (HbsAg) positive with detectable HBV-DNA indicating viral replication, patients who are anti-HCV antibody positive with detectable HCV-RNA indicating viral replication; positive syphilis screening (positive specific antibody test, negative nonspecific antibody test, and confirmed as non-active infection based on clinical judgment is excluded);
  • History of (HIV) infection, or HIV positive at screening;
  • Undergoing major surgery within 1 month prior to screening (high-risk, complex, or difficult procedures, such as thoracoscopic pulmonary bulla resection or thoracoscopic esophageal atresia surgery);
  • Received or planned to use recombinant human granulocyte-macrophage colony-stimulating factor (GM-CSF) within 1 week prior to screening or during the trial;
  • Received (oral or intravenous) or lithium treatment within 1 week prior to screening;
  • Received whole blood, white blood cells, or transfusion within 2 weeks prior to screening;
  • Received human granulocyte colony-stimulating factor (G-CSF) treatment within 3 months prior to screening;
  • Received systemic anti-infective therapy (oral or intravenous) within 72 hours prior to screening;
  • History of drug or alcohol abuse, or history of substance abuse;
  • Received other clinical trial drugs or treatments within 4 weeks prior to screening;
  • History of allergic diseases, being of an allergic constitution, or known allergy to any drug or component of this trial.
Terms in these criteria, in plain language(16)

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.

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.

Metastases

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

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
18 participants (estimated)

Study arms

  • Experimental
    Treatment Group

    Chemotherapy C1\&3: Changchun Shinkai (V): 1.5 mg/m² (maximum dose 2 mg), iv, on D1, 8, and 15; Doxorubicin (D): 30 mg/m², iv over more than 6 hours, on D1 and 2; Cyclophosphamide (C): 1.2 g/m², iv over more than 1 hour, on D1; Mesna: 360 mg/(m²/dose), iv, at 0, 3, 6, and 9 hours during cyclophosphamide. Chemotherapy C2: Ifosfamide (I): 1.8 g/m², iv over more than 1 hour, QD for 5 days (D1\~D5); Etoposide (E): 100 mg/m², iv over more than 4 hours, QD for 5 days (D1\~D5); Mesna: 360 mg/(m²/dose), iv, at 0, 3, 6, 9 hours during ifosfamide.

    Drug: Albipagrastim alf

Interventions

  • DrugAlbipagrastim alf

    QLC2519 500 μg/kg was administered 48 hours after chemotherapy (generally on D4 of the first and third chemotherapy cycles, and on D7 of the second cycle, between 6:00 and 10:00 AM), once per chemotherapy cycle.

06

What researchers measure

Primary outcomes

  1. Cmax of QLC2519

    Maximum (peak) serum concentration (Cmax) of QLC2519 will be reported.

    Time frame: At treatment Cycle 1 and Cycle 3 (cycle length = 21 days)]

  2. AUC0-t of QLC2519

    Area Under the Curve from time zero to time t (AUC0-t) of QLC2519 will be reported.

    Time frame: At treatment Cycle 1 and Cycle 3 (cycle length = 21 days)]

  3. Time to start administering chemotherapy drugs until the nadir of absolute neutrophil count (ANC)

    Time frame: At treatment Cycle 1 and Cycle 3 (cycle length = 21 days)]

Secondary outcomes

  1. Duration and incidence of severe ANC reduction

    ANC \< 0.5 × 10⁹/L

    Time frame: At treatment cycle 1 to cycle 3 (cycle length = 21 days)

  2. Efficacy: Incidence of febrile neutropenia (FN)

    Time frame: At treatment cycle 1 to cycle 3 (cycle length = 21 days)

  3. Duration and incidence of ANC < 1.0 × 10^9/L

    Time frame: At treatment cycle 1 to cycle 3 (cycle length = 21 days)

  4. Number of Participants With Treatment-emergent Adverse Events (TEAEs)

    Time frame: Up to Week 14

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

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Jun 2026; primary completion for Jun 2027, 12 months later.

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

Registered
Jun 29, 2026
First posted
Jul 24, 2026
StartEst.
Jun 26, 2026
Primary completionEst.
Jun 26, 2027
CompletionEst.
Jun 26, 2028
Last update
Jul 24, 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 Jul 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07724756
Responsible party
Sponsor
First posted
Jul 24, 2026
Start date
Jun 26, 2026 (estimated)
Primary completion
Jun 26, 2027 (estimated)
Completion
Jun 26, 2028 (estimated)
Last update
Jul 24, 2026

Oversight

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

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