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TUB-040- Dose escalation

Phase 2

NSCLC | Small molecule | Oncology |Gilead Sciences, Inc.|Last Updated: Sep 16, 2026

Target and mechanism

Molecular targetNaPi2b
Target classProtein
ModalitySmall molecule

Also known as TUB-040 - Dose escalation, TUB-040

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDDMC
Total Trials1
Total Enrollment80

FDA Designations

No designations recorded

Clinical trial landscape

TUB-040- Dose escalation · 4 trials · 5 indications

Phase 2 1Phase 1 3
NCT07806773Study of TUB-040 in Participants With Unresectable or Metastatic Nonsquamous Non-small Cell Lung CancerNSCLC
NOT YET_RECRUITING80 Analytics
PHASE2NOT YET_RECRUITING
Study of TUB-040 in Participants With Unresectable or Metastatic Nonsquamous Non-small Cell Lung Cancer
NSCLCUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants Experiencing Treatment-Emergent Adverse Events (TEAEs)
From enrollment until 30 days after last dose of study drug

Incidence and severity of treatment-emergent adverse events (TEAEs)

Overall Response Rate (ORR)
Enrollment until approximately 80 days since last dose of study drug

Assessment of overall response rate (ORR) by Response Evaluation Criteria for Solid Tumors (RECIST) v1.1 as assessed by the investigator (INV)

Phase 1: Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)
Up to 3 years

Incidence and severity of treatment-emergent adverse events (TEAEs)

Phase 1: Percentage of Participants Experiencing Dose-Limiting Toxicities (DLTs)
Up to 3 years

Incidence of dose-limiting toxicities (DLTs) at each dose level

Phase 2: Overall Response Rate (ORR)
Up to 3 years

Investigator (INV) assessment of overall response rate (ORR) by Response Evaluation Criteria for Solid Tumors (RECIST) v1.1

To determine the safety and tolerability of TUB-040 in combination with standard ovarian cancer drugs
From enrollment until 30 days after last study drug

Occurrence and severity of treatment-emergent adverse events (TEAEs)

Maximum Tolerated Dose (MTD) of TUB-040 with standard of care (SOC) treatment
Day 1 up to Day 21 of each treatment cycle

Occurrence of DLTs (Dose limiting toxicities) at different dose levels (during first treatment cycle)

Phase 1: Percentage of Participants Experiencing any Dose-limiting Toxicities (DLTs)[
First dose up to 21 days
Phase 1 and 2a: Percentage of Participants Experiencing Treatment-Emergent Adverse Event (TEAEs)
First dose date up to 30 days post last dose (Up to 3 years)
Phase 2a & 2b: Overall Response Rate (ORR) by Blinded Independent Central Review (BICR)
Up to 3 years

ORR is defined as the percentage of participants who have achieved complete response (CR) or partial response (PR), as assessed by BICR.

Secondary Endpoints

Duration of response (DoR)
Up to approximately 24 months
Disease control rate (DCR)
Up to approximately 24 months
Progression-free survival (PFS)
Up to approximately 24 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
NSCLC Dose 1EXPERIMENTALParticipants will receive TUB-040 administered as an intravenous (IV) infusion on Day 1 of each treatment cycle. Until disease progression, unacceptable toxicity, or withdrawal of consent.
NSCLC Dose 2EXPERIMENTALParticipants will receive TUB-040 administered as an IV infusion on Day 1 of each treatment cycle. Until disease progression, unacceptable toxicity, or withdrawal of consent.
Phase 1: Dose Escalation of TUB-040EXPERIMENTALParticipants will receive escalating doses of TUB-040 to determine recommended Phase 2 dose (RP2D).
Phase 2: Monotherapy of TUB-040EXPERIMENTALParticipants in Phase 2 will receive the recommended dose of TUB-040 monotherapy determined in Phase
Phase 1b Dose EscalationEXPERIMENTALDrug TUB-040 administered in combination with carboplatin (Carbo) and bevacizumab (BEV)
Platinum resistant ovarian cancerEXPERIMENTAL -
Non small cell lung cancer-adenocarcinomaEXPERIMENTAL -
Platinum resistant ovarian cancer in combination with BevacizumabEXPERIMENTAL -

Interventions

NameTypeDescription
TUB-040DRUGAdministered IV
TUB-040 - Dose escalationDRUGTUB-040 will be administered as an intravenous (IV) solution on day 1 of each treatment cycle.
TUB-040 - RP2DDRUGTUB-040 will be administered as an intravenous (IV) solution on day 1 of each treatment cycle. Dose based on the RP2D
TUB-040 + Carbo + BEVDRUGPh1b: A complete treatment cycle is defined as 21 calendar days. TUB-040 will be administered along with carboplatin (Carbo) and bevacizumab (BEV) as an intravenous (IV) solution on day 1 of each treatment cycle for up to 6 cycles.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites2

Key Inclusion Criteria: 1. Adults, male or nonpregnant, nonbreastfeeding female, age ≥18 years at the date of consent. 2. Eastern Cooperative Oncology Group performance status of 0 or 1. 3. Documented radiographic progression on or after the most recent line of anticancer therapy. 4. Life expectanc...

Countries:United StatesBelgiumUkraineGermanyPuerto RicoRomaniaSpainUnited Kingdom
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Frequently asked questions about TUB-040- Dose escalation

What is TUB-040?

TUB-040 is an investigational small molecule developed by Gilead Sciences, Inc. (ticker GILD) for the treatment of solid tumors. It is being studied in non-small cell lung cancer, ovarian cancer, and uterine endometrial cancer. TUB-040 is in Phase 2 clinical development and has not been approved by the FDA.

What does TUB-040 target?

TUB-040 targets NaPi2b, a protein expressed on the surface of certain tumor cells. By binding NaPi2b, TUB-040 is designed to deliver its therapeutic payload selectively to cancer cells. NaPi2b is the molecular target of interest across the tumor types being studied, including non-small cell lung cancer and ovarian cancer.

Who is developing TUB-040?

TUB-040 is being developed by Gilead Sciences, Inc., which trades under the ticker GILD. Gilead is the sponsor of the clinical program evaluating TUB-040 in non-small cell lung cancer, ovarian cancer, and uterine endometrial cancer. The drug remains investigational and has not received FDA approval.

What phase is TUB-040 in?

TUB-040 is in Phase 2 clinical development. It is an investigational agent and has not been approved by the FDA for any indication. The program includes both Phase 1 and Phase 2 studies across non-small cell lung cancer, ovarian cancer, and uterine endometrial cancer, with two active trials and no completed trials.

What clinical trials is TUB-040 in?

TUB-040 is being evaluated in four registered studies. NCT06303505 is a first-in-human Phase 1 trial in ovarian cancer and non-small cell lung cancer. NCT07736937 is a Phase 1 trial combining TUB-040 with standard ovarian cancer drugs. NCT07806773 is a Phase 2 trial in nonsquamous NSCLC, and NCT07743541 is a Phase 1 trial in uterine endometrial cancer.