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KB707

Phase 1

Cancer | Monoclonal antibody | Oncology |Krystal Biotech, Inc.|Last Updated: Oct 24, 2025

Target and mechanism

Molecular targetIL-2
Target classCytokine
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment240

FDA Designations

FAST_TRACKRMAT

Clinical trial landscape

KB707 · 2 trials · 9 indications

Phase 1 2
NCT06228326A Study Assessing KB707 for the Treatment of Advanced Solid Tumor Malignancies Affecting the LungsLung Cancer, Non-small Cell
RECRUITING250 Analytics
NCT05970497A Study Assessing KB707 for the Treatment of Locally Advanced or Metastatic Solid TumorsCancer
RECRUITING240 Analytics
PHASE1RECRUITING
A Study Assessing KB707 for the Treatment of Advanced Solid Tumor Malignancies Affecting the Lungs
Lung Cancer, Non-small CellUnlock trial analytics
PHASE1RECRUITING
A Study Assessing KB707 for the Treatment of Locally Advanced or Metastatic Solid Tumors
CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

To evaluate the safety and tolerability of inhaled KB707 based upon assessment of adverse events (AE)
up to 36 months

Percentage of subjects with treatment-related AEs as assessed by NCI-CTCAE v5

Percentage of adverse events (AEs)
up to 36 months

Percentage of subjects with adverse events (AEs)

Percentage of serious adverse events (SAEs)
up to 36 months

Percentage of subjects with serious adverse events (SAEs)

Secondary Endpoints

To evaluate whether the proposed dose ranges include the maximum tolerated dose of KB707 as determined by incidence of dose limiting toxicities (DLTs)
up to 36 months
To evaluate the preliminary efficacy of inhaled KB707 as determined by overall response rate (ORR)
up to 36 months
Maximum tolerated dose (MTD)
up to 36 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohorts 1 through 4EXPERIMENTALDose escalation and expansion cohorts: KB707 monotherapy in subjects with solid tumor malignancies affecting the lungs.
Cohort 5EXPERIMENTALDose expansion cohort: KB707 administered in combination with Keytruda in approximately 60 subjects with NSCLC.
Cohort 6EXPERIMENTALDose expansion cohort: KB707 administered in combination with Keytruda and chemotherapy in approximately 60 subjects with NSCLC.
Experimental: Cohort 7EXPERIMENTALDose expansion cohort: KB707 administered in combination with docetaxel in approximately 50 subjects with NSCLC.

Interventions

NameTypeDescription
KB707BIOLOGICALGenetically modified herpes simplex type 1 virus
Pembrolizumab (KEYTRUDA®)DRUGPD-1 immune checkpoint inhibitor
ChemotherapyDRUGSOC chemotherapy
DocetaxelDRUGSOC chemotherapy
OpdualagDRUGDual immunotherapy (PD-1 and LAG-3 immune checkpoint inhibitors)
KEYTRUDA ®( Pembrolizumab)DRUGImmunotherapy (PD-1 immune checkpoint inhibitor)
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites14

Key Inclusion Criteria: * Age 18 years or older at the time of informed consent * Life expectancy \>12 weeks * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Have at least one measurable lung lesion per RECIST v1.1 at Screening * Cohorts 1 through 4 only: Histologically co...

Countries:United States
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Frequently asked questions about KB707

What is KB707 used for?

KB707 is an investigational monoclonal antibody being developed for the treatment of cancer, including non-small cell lung cancer and other advanced solid tumors. It is currently in Phase 1 clinical trials for these indications.

What does KB707 target?

KB707 targets IL-2, a cytokine involved in immune response. By targeting IL-2, KB707 is designed to modulate immune activity in the tumor microenvironment, potentially enhancing the body's ability to fight cancer cells.

Who makes KB707?

KB707 is being developed by Krystal Biotech, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol KRYS.

What phase is KB707 in?

KB707 is in Phase 1 clinical development. It is an investigational drug and has not yet been approved by regulatory authorities. The ongoing trials are recruiting participants to evaluate its safety and efficacy.

What clinical trials is KB707 in?

KB707 is being studied in two Phase 1 trials: NCT05970497, which assesses KB707 for locally advanced or metastatic solid tumors including melanoma, and NCT06228326, which focuses on advanced solid tumors affecting the lungs, including non-small cell lung cancer. Both trials are recruiting in the United States.

Is KB707 the same as any other drug?

No alternative names for KB707 have been disclosed. It is a distinct investigational agent developed by Krystal Biotech.