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budoprutug

Phase 2

Primary Membranous Nephropathy | Small molecule | Nephrology |Climb Bio, Inc.|Last Updated: Aug 6, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment45

FDA Designations

ORPHAN_DRUGFAST_TRACK

Clinical trial landscape

budoprutug · 5 trials · 9 indications

Phase 2 1Phase 1 3Early Phase 1 1
NCT07096843A Phase 2 Study of Budoprutug in Subjects With Primary Membranous NephropathyPrimary Membranous Nephropathy
RECRUITING45 Analytics
PHASE2RECRUITING
A Phase 2 Study of Budoprutug in Subjects With Primary Membranous Nephropathy
Primary Membranous NephropathyUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of Treatment-Emergent Adverse Events (TEAEs)
Up to Week 48

Number of participants experiencing TEAEs, graded per NCI CTCAE v5.0.

Incidence of Clinical Laboratory Abnormalities
Up to week 28

Number of participants with clinically significant laboratory abnomalities.

Incidence of dose-limiting toxicities (DLTs)
up to 28 weeks

Number of incidences of dose-limiting toxicities (DLTs)

Change from Baseline in Systolic Blood Pressure
Up to week 28

Mean change from baseline in diastolic blood pressure (mmHg).

Change from Baseline in Diastolic Blood Pressure
up to 28 weeks

Mean change from baseline in systolic blood pressure (mmHg).

Change from Baseline in Heart Rate
up to 28 weeks

Mean change from baseline in heart rate (bpm).

Change from Baseline in Respiratory Rate
up to 28 weeks

Mean change from baseline in respiratory rate

Change from Baseline in Body Temperature
up to 28 weeks

Mean change from baseline in body temperature (°C)

Change from Baseline in PR Interval
up to 28 weeks

Mean change from baseline in PR interval (ms)

Change from Baseline in QRS Duration
up to 28 weeks

Mean change from baseline in QRS duration (ms)

Change from Baseline in QT Interval
up to 28 weeks

Mean change from baseline in QT interval (ms)

Change from Baseline in QTc Interval
up to 28 weeks

Mean change from baseline in corrected QT interval (QTc)

Safety and Tolerability of Single Ascending Doses of budoprutug in Healthy Participants
Day 57

Incidence of treatment-emergent adverse events

Incidence of infusion-related reactions (IRRs) for IV administration
Day 57

Number of infusion-related reactions

Incidence of injection site reactions (ISRs) for SC administration
Day 57

Number of injection site reactions

Secondary Endpoints

Change in total B Cell Count
Up to Week 48
Change in Anti-PLA2R Antibodies
Up to Week 48
Complete Remission Rate
Week 48
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort 1: Dose Level AEXPERIMENTAL -
Cohort 2: Dose Level BEXPERIMENTAL -
Cohort 3: Dose Level CEXPERIMENTAL -
Dose Expansion CohortEXPERIMENTALSingle IV dose at Day 1 and Day 15
Cohort 4: Dose Level DEXPERIMENTAL -
BudoprutugEXPERIMENTALSubcutaneous (SC) injection or IV administration of budoprutug
PlaceboPLACEBO_COMPARATORPlacebo solution to be administered at a matching volume

Interventions

NameTypeDescription
budoprutugDRUGSingle IV dose of study product on Day 1, Day 15, Day 169 and Day 183
PlaceboDRUGPlacebo comparator
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites43

Inclusion Criteria: * Confirmed diagnosis of PMN with positive anti-PLA2R antibodies * CD19+ B cell count ≥40 cells/μL * UPCR ≥2.0 g/g * eGFR ≥35 mL/min/1.73 m² * Stable RAAS inhibitor therapy * Blood pressure \<150/90 mmHg at baseline * Adequate hematologic, hepatic, and renal function * Willing t...

Countries:United StatesArgentinaBrazilChileChinaGeorgiaTaiwanUkraineBulgariaGreecePuerto RicoRomaniaSpainSerbiaAustralia
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Recent Changes (Last 90 Days)

MEDIUMAug 30, 2026NCT07090655TRIAL_REMOVED: changed
MEDIUMAug 30, 2026NCT07090655TRIAL_REMOVED: changed
MEDIUMAug 30, 2026NCT07090655TRIAL_REMOVED: changed
LOWAug 6, 2026NCT07564596Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 6, 2026NCT07564596Status: NOT_YET_RECRUITING → RECRUITING
HIGHJul 30, 2026NCT07090655Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHJul 30, 2026NCT07090655Status: ACTIVE_NOT_RECRUITING → COMPLETED
LOWJul 17, 2026NCT07096843lastUpdatePostDate: changed
LOWJul 17, 2026NCT07096843lastUpdatePostDate: changed
LOWJul 17, 2026NCT07096843lastUpdatePostDate: changed

Frequently asked questions about budoprutug

What is Budoprutug used for?

Budoprutug is an investigational small molecule being studied for systemic lupus erythematosus (SLE), primary membranous nephropathy, immune thrombocytopenia (ITP), and in healthy volunteers. It is in clinical development by Climb Bio, Inc. and is not yet approved by the FDA.

What does Budoprutug target?

Budoprutug is a monoclonal antibody that targets CD19, as indicated in the trial for immune thrombocytopenia. It is being studied for its potential to modulate B-cell activity in autoimmune conditions.

Who makes Budoprutug?

Budoprutug is being developed by Climb Bio, Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol CLYM. The company is conducting clinical trials to evaluate the drug's safety and efficacy.

What phase is Budoprutug in?

Budoprutug is in Phase 1 and Phase 2 clinical trials. It has completed an early Phase 1 study in healthy volunteers and is currently recruiting for Phase 1b studies in SLE and ITP, as well as a Phase 2 study in primary membranous nephropathy.

What clinical trials is Budoprutug in?

Budoprutug is being studied in several trials: NCT07011043 (Phase 1b in SLE), NCT07043946 (Phase 1b/2a in ITP), NCT07090655 (completed Phase 1 in healthy volunteers), and NCT07096843 (Phase 2 in primary membranous nephropathy). All are actively recruiting except the healthy volunteer study.

Is Budoprutug the same as TNT119?

Yes, Budoprutug is also known as TNT119. In a completed Phase 1 study in healthy volunteers, the drug was referred to as Budoprutug (TNT119), confirming that both names refer to the same investigational agent.