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BLEX 404 Liquid

Phase 2

Myelodysplastic Syndrome (MDS) | Small molecule | Hematology |ABVC BioPharma, Inc.|Last Updated: Apr 13, 2026

Target and mechanism

ModalitySmall molecule

Also known as BLEX 404 Oral Liquid

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment52

FDA Designations

No designations recorded

Clinical trial landscape

BLEX 404 Liquid · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT02944955A Study of BLEX 404 Oral Liquid in Patients With International Prognostic Scoring System (IPSS) Intermediate-1, Intermediate-2 or High-Risk Myelodysplastic Syndrome (MDS) and Chronic Myelomonocytic Leukemia (CMML)Myelodysplastic Syndrome (MDS)
NOT YET_RECRUITING52 Analytics
PHASE2NOT YET_RECRUITING
A Study of BLEX 404 Oral Liquid in Patients With International Prognostic Scoring System (IPSS) Intermediate-1, Intermediate-2 or High-Risk Myelodysplastic Syndrome (MDS) and Chronic Myelomonocytic Leukemia (CMML)
Myelodysplastic Syndrome (MDS)Unlock trial analytics

Study Endpoints

Primary Endpoints

Part I: Recommended dose level (RDL) of BLEX 404 Oral Liquid
8 weeks (2 cycles of azacitidine)

RDL is defined by BLEX 404 Oral Liquid-related prohibited toxicity in subjects undergoing 2 cycles of azacitidine treatment. When one of the stopping criteria is met during the study treatment period, RDL will be set at the lower dose level.

Part II: Incidence of infections
24 weeks (6 cycles of azacitidine)

Number of subjects experience infection events and inpatient hospitalization due to infections.

Phase I: Dose-limiting toxicity (DLT) observation
3 weeks (1 cycle)

Presence or absence of dose-limiting toxicity (DLT) related to BLEX 404 Oral Liquid for each patient during first cycle of Docetaxel monotherapy to determine the recommended dose level (RDL).

Phase II: Overall response rate (PR + CR)
12 weeks (4 cycles)

Overall response rate (PR + CR) after 4 cycles of combination use in BLEX 404 + Docetaxel monotherapy.

Secondary Endpoints

Part I: (A) Number of subjects experience infections events and inpatient hospitalization due to infections
8 weeks (2 cycles of azacitidine)
Part I: (B) Treatments and duration of each infections
8 weeks (2 cycles of azacitidine)
Part I: (C) Complete remission (CR) or partial remission (PR) of bone marrow, peripheral blood, cytogenetic response (defined by 2006 IWG Criteria)
8 weeks (2 cycles of azacitidine)
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
BLEX 404 Oral LiquidEXPERIMENTALPart I: Part I-1: Low Dose BLEX 404 Oral Liquid (3 mg/kg, BID) is administered in combination with 2 cycles of azacitidine. Part I-2: High Dose BLEX 404 Oral Liquid (4.5 mg/kg, BID) is administered in combination with 2 cycles of azacitidine. Part II: Recommended Dose Level (RDL) of BLEX 404 Oral Liquid will be determined by results from Part I. BLEX 404 Oral Liquid at RDL is administered in combination with 6 cycles of azacitidine.

Interventions

NameTypeDescription
BLEX 404 Oral LiquidDRUGBLEX 404 Oral Liquid is orally administered twice daily in combination with azacitdine treatment cycles (2 cycles in Part I and 6 cycles in Part II). Azacitidine treatment: SC or IV injections at 75 mg/m2, QD for 7 days each cycle. 28 days/cycle, and repeat cycles every 4 weeks.
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Eligibility Criteria

Age Range20 Years to N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Age 20 or older, able to sign informed consent, understand and comply with protocol requirements and instructions. * Body weight between 30 to 120 kg * International Prognostic Scoring System (IPSS) intermediate-1 (int-1), intermediate-2 (int-2) or high-risk myelodysplastic sy...

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Recent Changes (Last 90 Days)

MEDIUMMay 26, 2026NCT02802423Phase: PHASE2 → PHASE1
MEDIUMMay 26, 2026NCT02944955primaryCompletionDate: changed
LOWMay 24, 2026NCT02802423studyFirstPostDate: changed
LOWMay 24, 2026NCT02944955studyFirstPostDate: changed

Frequently asked questions about BLEX 404 Liquid

What is BLEX 404 Liquid used for?

BLEX 404 Liquid is an investigational small molecule being developed for Myelodysplastic Syndrome (MDS) and Triple Negative Breast Cancer. It is currently in Phase 2 clinical development for these indications. The drug is being studied in patients with advanced or metastatic Triple Negative Breast Cancer and in patients with intermediate-1, intermediate-2, or high-risk MDS.

What does BLEX 404 target?

BLEX 404 is a small molecule, but its specific molecular target has not been disclosed. It is being studied for its safety and efficacy in combination with docetaxel in Triple Negative Breast Cancer and as a monotherapy in Myelodysplastic Syndrome. The drug is in Phase 2 clinical trials for these indications.

Who makes BLEX 404?

BLEX 404 is being developed by ABVC BioPharma, Inc., a biopharmaceutical company. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with Myelodysplastic Syndrome and Triple Negative Breast Cancer. ABVC BioPharma is listed on the stock exchange under the ticker symbol ABVC.

What phase is BLEX 404 in?

BLEX 404 is in Phase 2 clinical development. It is being studied in two indications: Myelodysplastic Syndrome and Triple Negative Breast Cancer. The drug is not yet approved by regulatory authorities and remains investigational. Clinical trials are ongoing to evaluate its safety and efficacy in these patient populations.

What clinical trials is BLEX 404 in?

BLEX 404 is being studied in two clinical trials. NCT02944955 is a Phase 2 study of BLEX 404 Oral Liquid in patients with Myelodysplastic Syndrome, with an enrollment of 52 participants. NCT02802423 is a Phase 1/2 study of BLEX 404 with docetaxel in patients with advanced or metastatic Triple Negative Breast Cancer, with an enrollment of 44 participants.

Is BLEX 404 the same as BLEX 404 Oral Liquid?

Yes, BLEX 404 Liquid and BLEX 404 Oral Liquid refer to the same investigational drug. The drug is being developed by ABVC BioPharma, Inc. for the treatment of Myelodysplastic Syndrome and Triple Negative Breast Cancer. It is currently in Phase 2 clinical trials for these indications.