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NKX019

Phase 1

Lupus Nephritis | Small molecule | Nephrology |Nkarta, Inc.|Last Updated: Aug 7, 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment120

FDA Designations

No designations recorded

Clinical trial landscape

NKX019 · 3 trials · 16 indications

Phase 1 3
NCT06733935A Phase 1/2 Study of NKX019 in Subjects With Immune-Mediated Diseases (Ntrust-2)Systemic Sclerosis
RECRUITING240 Analytics
NCT06557265A Phase 1/2 Study of NKX019 in Subjects With Autoimmune Disease (Ntrust-1)Lupus Nephritis
RECRUITING120 Analytics
NCT05020678NKX019, Intravenous Allogeneic Chimeric Antigen Receptor Natural Killer Cells (CAR NK), in Adults With B-cell CancersLymphoma, Non-Hodgkin
ACTIVE NOT_RECRUITING150 Analytics
PHASE1RECRUITING
A Phase 1/2 Study of NKX019 in Subjects With Immune-Mediated Diseases (Ntrust-2)
Systemic SclerosisUnlock trial analytics
PHASE1RECRUITING
A Phase 1/2 Study of NKX019 in Subjects With Autoimmune Disease (Ntrust-1)
Lupus NephritisUnlock trial analytics
PHASE1ACTIVE NOT_RECRUITING
NKX019, Intravenous Allogeneic Chimeric Antigen Receptor Natural Killer Cells (CAR NK), in Adults With B-cell Cancers
Lymphoma, Non-HodgkinUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of Dose-limiting toxicities (DLTs) [Safety and Tolerability]
The first 28 days after the first NKX019 dose

Incidence of DLTs will be evaluated

Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]
From the first administration of NKX019 until the last administration of any study treatment + 30 days

Incidence and severity of treatment-emergent adverse events will be evaluated

Incidence of clinically significant abnormalities in clinical laboratory assessments [Safety and Tolerability]
From the first NKX019 dose until the last follow up visit

Incidence of clinically significant laboratory abnormalities will be evaluated

Proportion of subjects experiencing dose-limiting toxicities of NKX019
28 days from first dose of NKX019

DLTs are defined as adverse events attributable to NKX019 treatment that occur during Cycle 1 and meet protocol-specified criteria

Objective response rate to NKX019 in Part 2
Primary assessment: 28 days after the first dose of NKX019 followed up to 2 years after the last dose of NKX019]

Percentage of subjects with complete and partial response. Response to treatment will be assessed based on: Lugano classification with LYRIC refinement for subjects with NHL (except CLL/SLL and WM); 2018 iwCLL guidelines for subjects with CLL/SLL; Version 1.2020 NCCN for subjects with B-ALL; consensus criteria from the 6th International Workshop on Waldenström Macroglobulinemia for subjects with WM.

Secondary Endpoints

For all participants with Interstitial Lung Disease (ILD)
Up to 2 years after NKX019 infusion
For all participants with Systemic Sclerosis (SSc)
Up to 2 years after NKX019 infusion
For all participants with Idiopathic Inflammatory Myopathies (IIM)
Up to 2 years after NKX019 infusion
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
NKX019 - CAR NK cell therapyEXPERIMENTALPhase 1/2: NKX019 plus fludarabine and cyclophosphamide

Interventions

NameTypeDescription
NKX019DRUGNKX019 is an investigational allogeneic CD19-Directed CAR NK
FludarabineDRUGLymphodepletion
CyclophosphamideDRUGLymphodepletion
Fludarabine, CyclophosphamideDRUGFor Lymphodepletion
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites18

General Inclusion Criteria: 1. Age ≥18 and ≤75 2. Signed informed consent form and ability to adhere to the study visit schedule and comply with other protocol requirements 3. Women of childbearing potential must have negative pregnancy tests at screening and baseline, and agree to abstinence or ac...

Countries:United StatesAustraliaPuerto Rico
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Recent Changes (Last 90 Days)

LOWAug 7, 2026NCT06733935lastUpdatePostDate: changed
LOWAug 7, 2026NCT06733935lastUpdatePostDate: changed

Frequently asked questions about NKX019

What is NKX019 used for?

NKX019 is an investigational allogeneic chimeric antigen receptor natural killer cell (CAR NK) therapy being studied in adults with B-cell cancers and autoimmune diseases. In clinical trials, it is being evaluated for non-Hodgkin lymphoma, lupus nephritis, systemic sclerosis, and other immune-mediated conditions. It is not yet approved and remains in Phase 1 clinical development.

How does NKX019 work?

NKX019 is an allogeneic chimeric antigen receptor natural killer cell (CAR NK) therapy. It is designed to use natural killer cells engineered with a chimeric antigen receptor to target and eliminate disease-causing cells. The specific molecular target is not disclosed in the available information.

Who is developing NKX019?

NKX019 is being developed by Nkarta, Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol NKTX. The company is conducting clinical trials of NKX019 in the United States, Australia, and Puerto Rico.

What phase is NKX019 in?

NKX019 is in Phase 1 clinical development. It is an investigational therapy and has not been approved by regulatory authorities. Clinical trials are ongoing or active but not recruiting in some cases, with studies evaluating the therapy in B-cell cancers and autoimmune diseases.

What clinical trials is NKX019 in?

NKX019 is being studied in three clinical trials. NCT05020678 evaluates it in adults with B-cell cancers including non-Hodgkin lymphoma. NCT06557265 (Ntrust-1) studies it in lupus nephritis and primary membranous nephropathy. NCT06733935 (Ntrust-2) studies it in systemic sclerosis and other immune-mediated diseases.

Is NKX019 the same as CAR NK therapy?

NKX019 is a type of chimeric antigen receptor natural killer cell (CAR NK) therapy, specifically an allogeneic CAR NK product. It is not known by any other drug name. The therapy is being investigated for its potential in treating hematologic cancers and autoimmune conditions.