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Plinabulin

Phase 3

Chemotherapy-induced Neutropenia | Small molecule | Hematology |BeyondSpring, Inc.|Last Updated: Jan 23, 2026

Target and mechanism

Molecular targetTUBB4B, TUBB1, TUBA3C, TUBA4A, TUBB3, TUBA1A
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials3
Total Enrollment275

FDA Designations

BREAKTHROUGH_THERAPYPRIORITY_REVIEW

Clinical trial landscape

Plinabulin · 4 trials · 3 indications

Phase 3 2Phase 2 2
NCT07361484Docetaxel Plus Plinabulin vs Docetaxel Plus Placebo in Advanced/Metastatic Non-Squamous NSCLC After PD-1/PD-L1 Therapy and Platinum Chemotherapy (DUBLIN-4)Non-Small Cell Lung Cancer
NOT YET_RECRUITING442 Analytics
NCT03102606Plinabulin vs. Pegfilgrastim in Patients With Solid Tumors Receiving Docetaxel Myelosuppressive Chemotherapy Phase 3Chemotherapy-induced Neutropenia
COMPLETED105 Analytics
PHASE3NOT YET_RECRUITING
Docetaxel Plus Plinabulin vs Docetaxel Plus Placebo in Advanced/Metastatic Non-Squamous NSCLC After PD-1/PD-L1 Therapy and Platinum Chemotherapy (DUBLIN-4)
Non-Small Cell Lung CancerUnlock trial analytics
PHASE3COMPLETED
Plinabulin vs. Pegfilgrastim in Patients With Solid Tumors Receiving Docetaxel Myelosuppressive Chemotherapy Phase 3
Chemotherapy-induced NeutropeniaUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall Survival (OS)
Approximately 2 years after study initiation.

OS is defined as the time from randomization to death from any cause

Duration of Severe Neutropenia (DSN)
21 Days

Duration of severe neutropenia (ANC \< 0.5 × 109/L)

DSN
At the end of Cycle 1 (each cycle is 21 days)

Duration of Grade 4 neutropenia (ANC \< 0.5 × 109/L)

Secondary Endpoints

Progression-Free Survival (PFS)
Approximately 2 years after study initiation.
Objective Response Rate (ORR)
Approximately 2 years after study initiation.
Incidence of Grade 4 Neutropenia (Cycle 1 Day 8 ANC)
At Day 8 of Cycle 1 (approximately 1 week after the first dose; each treatment cycle is 21 days).
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Docetaxel + PlinabulinEXPERIMENTALParticipants will receive docetaxel IV infusion on Day 1 of each 21-day cycle plus plinabulin IV infusion on Days 1 and 8. Treatment continues until disease progression, unacceptable toxicity, death, withdrawal, or sponsor/investigator decision.
Docetaxel + PlaceboPLACEBO_COMPARATORParticipants will receive docetaxel IV infusion on Day 1 of each 21-day cycle plus matching placebo IV infusion on Days 1 and 8. Treatment continues until disease progression, unacceptable toxicity, death, withdrawal, or sponsor/investigator decision.
Docetaxel (75 mg/m2) + pegfilgrastim (6 mg) + placebo matching plinabulinACTIVE_COMPARATORArm 1
Docetaxel (75 mg/m2) + plinabulin (40 mg) + placebo matching pegfilgrastimEXPERIMENTALArm 2
TAC + Pegfilgrastim (6 mg)ACTIVE_COMPARATOR -
TAC + Plinabulin 10 mg/m^2EXPERIMENTAL -
TAC + Plinabulin 20 mg/m^2EXPERIMENTAL -
TAC + Plinabulin 30 mg/m^2EXPERIMENTAL -
TAC + Pegfilgrastim (1.5 mg) + Plinabulin (20 mg/m^2)EXPERIMENTAL -
TAC + Pegfilgrastim (3 mg) + Plinabulin (20 mg/m^2)EXPERIMENTAL -
TAC + Pegfilgrastim (6 mg) + Plinabulin (20 mg/m^2)EXPERIMENTAL -
20 mg/m^2 PlinabulinEXPERIMENTAL75 mg/m\^2 Docetaxel + 20 mg/m\^2 Plinabulin
10 mg/m^2 PlinabulinEXPERIMENTAL75 mg/m\^2 Docetaxel + 10 mg/m\^2 Plinabulin
5 mg/m^2 PlinabulinEXPERIMENTAL75 mg/m\^2 Docetaxel + 5 mg/m\^2 Plinabulin
6 mg PegfilgrastimACTIVE_COMPARATOR75 mg/m\^2 Docetaxel + 6 mg Pegfilgrastim

Interventions

NameTypeDescription
PlinabulinDRUGPlinabulin will be administered by IV infusion at 30 mg/m² over approximately 1 hour on Days 1 and 8 of each 21-day treatment cycle. On Day 1, plinabulin will be administered approximately 1 hour after completion of the docetaxel infusion.
DocetaxelDRUGDocetaxel will be administered by intravenous (IV) infusion at 75 mg/m² over approximately 1 hour on Day 1 of each 21-day treatment cycle.
Placebo (matching plinabulin placebo)DRUGMatching placebo will be administered by IV infusion over approximately 1 hour on Days 1 and 8 of each 21-day treatment cycle. On Day 1, placebo will be administered approximately 1 hour after completion of the docetaxel infusion.
PegfilgrastimDRUGPEGFILGRASTIM is a long-acting granulocyte colony-stimulating factor that stimulates the growth of neutrophils, to reduce the incidence of fever and infection in patients with certain types of cancer who are receiving chemotherapy that affects the bone marrow.
Saline PlaceboOTHERPlacebo Syringe 0.6 ml Saline to match the 0.6 ml pegfilgrastim administration
D5W PlaceboOTHERPlacebo 250 ml D5W to match the administration of plinabulin diluted in 250 ml D5W
Docetaxel, doxorubicin, and cyclophosphamide (TAC)DRUGDocetaxel is a type of chemotherapy medicine called an taxane. Doxorubicin is a type of chemotherapy medicine called an anthracycline. Cyclophosphamide is a type of chemotherapy medicine called an alkylating agent.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: 1. Males and females 18 years of age or older at the time of signing the ICF 2. Willing and able to sign an ICF; 3. Non-squamous NSCLC with EGFR, ALK, ROS and RET wild type who have been diagnosed by histopathological and/or cytological examination as being ineligible for surgic...

Countries:United StatesChinaRussiaUkraine
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Frequently asked questions about Plinabulin

What is Plinabulin used for?

Plinabulin is an investigational small molecule being developed for chemotherapy-induced neutropenia and non-small cell lung cancer. It is in Phase 3 clinical development for these indications. The drug is being studied in patients with solid tumors receiving docetaxel myelosuppressive chemotherapy and in advanced or metastatic non-squamous NSCLC.

What does Plinabulin target?

Plinabulin is an inhibitor that targets multiple tubulin proteins, including TUBB4B, TUBB1, TUBA3C, TUBA4A, TUBB3, and TUBA1A. By inhibiting these tubulin targets, the drug is being investigated for its effects in chemotherapy-induced neutropenia and non-small cell lung cancer.

Who makes Plinabulin?

Plinabulin is being developed by BeyondSpring, Inc., a biopharmaceutical company listed on NASDAQ under the ticker BYSI. The company is conducting clinical trials to evaluate the drug's safety and efficacy in chemotherapy-induced neutropenia and non-small cell lung cancer.

What phase is Plinabulin in?

Plinabulin is in Phase 3 clinical development. It has received Breakthrough Therapy designation and Priority Review from the FDA. The drug is investigational and has not been approved, as it is still undergoing clinical trials to assess its efficacy and safety for the studied indications.

What clinical trials is Plinabulin in?

Plinabulin has been studied in several clinical trials. NCT03102606 is a Phase 3 trial comparing Plinabulin to pegfilgrastim in patients with solid tumors receiving docetaxel chemotherapy. NCT04227990 is a Phase 2 trial in TAC-induced neutropenia. NCT04345900 is a Phase 2 trial versus pegfilgrastim. NCT07361484 is a Phase 3 trial in NSCLC.

Is Plinabulin the same as any other drug?

Plinabulin is a distinct investigational drug and is not known to be the same as any other approved medication. It is being studied under its own name in clinical trials for chemotherapy-induced neutropenia and non-small cell lung cancer, and no alternative names have been reported.