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A Long-Term Follow-Up Study for Participants Previously Treated With KYV-101

A Long-Term Follow-Up Study for Participants Previously Treated With KYV-101

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07403188
Acronym
KYSA-4
Enrollment
70
Registered
2026-02-11
Start date
2025-11-24
Completion date
2041-01-01
Last updated
2026-02-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Refractory Lupus Nephritis, Myasthaenia Gravis, Stiff Person Syndrome, Rheumatoid Arthritis (RA), Multiple Sclerosis, Dermatomyositis, Systemic Sclerosis (SSc)

Brief summary

The purpose of this long-term follow-up (LTFU) study is to collect delayed adverse events (AEs) and understand the persistence of KYV-101 (autologous CAR T cell product; gene-modified product), in participants who have been administered KYV-101 (gene-modified product; autologous CAR T cell product). This LTFU protocol will be open to any participant who received at least one infusion of KYV-101 in a previous Kyverna sponsored clinical trial or Investigator Initiated Trial (IIT).

Interventions

Autologous fully-human anti-CD19 chimeric antigen receptor T-cell (CD19 CAR T) product.

Sponsors

Kyverna Therapeutics
Lead SponsorINDUSTRY

Study design

Observational model
OTHER
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Provided informed consent for the LTFU study * Received at least 1 infusion of KYV-101 as part of a previous KYV-101 parent treatment protocol

Exclusion criteria

* Not applicable

Design outcomes

Primary

MeasureTime frame
Number of participants with treatment-related adverse events (AEs) as assessed by CTCAE v6.0 through Year 15 of long-term follow-up (LTFU).Up to 15 years from study entry
Number of participants with new or recurrent malignancies as assessed by CTCAE v6.0 through Year 15 of long-term follow-up (LTFU).Up to 15 years from study entry
Number of participants with new or exacerbation of a pre-existing neurologic disorder as assessed by CTCAE v6.0 through Year 15 of long-term follow-up (LTFU).Up to 15 years from study entry
Number of participants with new or exacerbation of a prior rheumatologic or other autoimmune disorder as assessed by CTCAE v6.0 through Year 15 of long-term follow-up (LTFU).Up to 15 years from study entry
Number of participants with new hematologic disorders as assessed by CTCAE v6.0 through Year 15 of long-term follow-up (LTFU).Up to 15 years from study entry
Number of participants with new infections as assessed by CTCAE v6.0 through Year 15 of long-term follow-up (LTFU).Up to 15 years from study entry
Number of participants with positive Replication-Competent Lentivirus (RCL) laboratory test results through Year 5 of long-term follow-up (LTFU).Up to 5 years from study entry
Number of participants with positive Chimeric Antigen Receptor (CAR) laboratory test results through Year 5 of long-term follow-up (LTFU).Up to 5 years from study entry
Number of participants with positive Anti-Drug-Antibody (ADA) laboratory test results through Year 5 of long-term follow-up (LTFU).Up to 5 years from study entry

Secondary

MeasureTime frameDescription
For lupus nephritis participants, number of participants administered glucocorticoids and other immunosuppressants through Year 2 after KYV101 infusion.Up to 2 years from first KYV-101 infusion
For stiff-person syndrome participants, change in time required (in seconds) to complete the Timed 25-foot Walk (T25-FW) through Year 4 of LTFU.Up to 4 years from study entryFor stiff-person syndrome participants, change in time required (in seconds) from baseline to complete the Timed 25-foot Walk (T25-FW) test as assessed by the investigator through Year 4 of long-term follow-up (LTFU). The T25-FW test is a quantitative mobility and leg function performance test based on a timed 25-foot walk, with shorter times indicating better mobility and improved disease severity.
For myasthenia gravis participants, change in score on the Myasthenia Gravis Activities of Daily Living (MG-ADL) questionnaire through Year 5 of LTFU.Up to 5 years from study entryFor myasthenia gravis participants, change in score from baseline on the Myasthenia Gravis Activities of Daily Living (MG-ADL) questionnaire as assessed by the investigator through Year 5 of long-term follow-up (LTFU). The MG-ADL questionnaire is a quantitative functional status instrument, with scores ranging from 0 to 24, with a higher score indicating worse disease severity.
For myasthenia gravis participants, change in score on the Quantitative Myasthenia Gravis (QMG) questionnaire through Year 5 of LTFU.Up to 5 years from study entryFor myasthenia gravis participants, change in score from baseline on the Quantitative Myasthenia Gravis (QMG) questionnaire as assessed by the investigator through Year 5 of long-term follow-up (LTFU). The QMG questionnaire is a quantitative muscle strength and endurance/fatigability instrument, with scores ranging from 0 to 39, with a higher score indicating worse disease severity.

Countries

United States

Contacts

CONTACTKyverna Therapeutics
clinicaltrials@kyvernatx.com510-925-2484

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026