Kyverna Therapeutics Updates COMPARE Trial Data
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Jun 03 2026
0mins
Kyverna Therapeutics announced the presentation of updated data from the Phase 1 portion of COMPARE, a Phase 1/2 investigator-initiated trial evaluating miv-cel in patients with active anti-citrullinated protein antibody-positive, treatment-refractory rheumatoid arthritis. The data will be presented today in an oral presentation by Charite - University of Berlin at the European Alliance of Associations for Rheumatology, or EULAR, 2026 Congress in London. Building on the safety and efficacy results reported at ACR Convergence 2025, the updated data showed a single dose of miv-cel resulted in deep B-cell depletion with subsequent reconstitution with a naive B-cell phenotype in ACPA-positive RA patients. These findings demonstrate the potential of an immune reset and translate into meaningful clinical improvement. The COMPARE trial is an open-label, randomized, controlled Phase 1/2 study evaluating miv-cel against the anti-CD20 monoclonal antibody rituximab in patients with active ACPA-positive, treatment-refractory RA with moderate to high disease activity. All six patients enrolled in the Phase 1 portion of the study displayed highly refractory disease and had failed a median of 6.5 prior biologic and targeted synthetic disease-modifying anti-rheumatic drugs before entering the study. Patients received a single infusion of 1108 miv-cel CAR T cells following lymphodepletion with follow-up ranging up to 52 weeks. The primary endpoint for the Phase 1 study was safety and tolerability with patients additionally evaluated for efficacy and key biomarkers of RA. Deep depletion of autoreactive CD19+ B cells and plasmablasts in periphery and tissues. Rapid and substantial reduction in disease-associated autoantibodies, including ACPA, rheumatoid factor immunoglobulin A and M, for up to 52 weeks, while preserving long-term protective vaccine immunity. Substantial reduction in disease activity in all six patients who showed fewer tender and swollen joints and less joint inflammation following a single dose of miv-cel. In addition, the majority of patients met the ACR70 response by Week 36. Evidence of immune reset with repopulated B-cells returning as predominantly naive and transitional cells. Well-tolerated safety profile with no high-grade cytokine release syndrome and no immune effector cell-associated neurotoxicity syndrome. Based on the Phase 1 findings, the Phase 2 portion of the COMPARE trial has been initiated and is fully enrolled. This trial compares B-cell depletion with miv-cel versus rituximab in patients with active ACPA-positive, treatment refractory RA with moderate to high disease activity.
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Current: 9.160
Low
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Averages
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High
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About KYTX
Kyverna Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on developing cell therapies for patients with autoimmune diseases. The Company’s lead chimeric antigen receptor (CAR) T-cell therapy candidate, KYV-101, is advancing through clinical development with Phase II trials for stiff person syndrome and myasthenia gravis, and two ongoing multi-center Phase I/II trials for patients with lupus nephritis. KYV-101 is an autologous, fully human CD19 CAR T-cell product candidate incorporating highly potent CD28 co-stimulation. The Company is also harnessing investigator-initiated trials and other KYSA studies, including in multiple sclerosis and systemic sclerosis, to inform the next priority indications for the Company to advance into late-stage development. Its pipeline includes next generation CAR T-cell therapies in both autologous and allogeneic formats with properties intended to be well suited for use in B cell-driven autoimmune diseases.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
Biopharma Investment Comparison: Kyverna vs. Vertex
- Kyverna's Clinical Challenges: Kyverna Therapeutics focuses on developing cell therapies for autoimmune diseases, with its lead candidate KYV-101 yet to gain approval, reporting a net loss of $161.3 million in FY 2025, highlighting the high costs of R&D and clinical trial risks, leaving its future market success uncertain.
- Vertex's Market Dominance: Vertex Pharmaceuticals holds a dominant position in the cystic fibrosis market, achieving $12 billion in revenue for FY 2025, a 9.6% increase, with a net income of nearly $4 billion, demonstrating strong demand for its established products and profitability.
- Risk and Reward Trade-off: Kyverna faces risks due to its lack of revenue and high R&D expenses, while Vertex relies heavily on cystic fibrosis treatment revenue, creating concentration risk if the market is disrupted, necessitating careful consideration by investors based on their risk tolerance.
- Future Growth Potential: While Kyverna has the potential to develop a breakthrough drug for Stiff-Person Syndrome, its market outlook remains unclear until regulatory approval is obtained; in contrast, Vertex shows a more robust growth outlook through continuous innovation and expansion into new treatment areas.
See More
Analyzing Biopharmaceutical Investment Choices
- Financial Performance: Vertex Pharmaceuticals achieved $12 billion in revenue for FY 2025, reflecting a 9.6% increase year-over-year, with a net income of nearly $4 billion and a net margin of approximately 33%, indicating strong market position and profitability in the treatment sector.
- R&D Risk Assessment: Kyverna Therapeutics, as a clinical-stage company, reported a net loss of $161.3 million in FY 2025 with no revenue, highlighting the high R&D costs associated with complex clinical trials and the uncertainty of future success.
- Market Competition Dynamics: Vertex holds a near-monopoly in the cystic fibrosis market while expanding into other therapeutic areas, whereas Kyverna focuses on developing cell therapies for autoimmune diseases, facing significant market risks and competitive pressures.
- Innovative Product Outlook: Kyverna's miv-cel has the potential to become a breakthrough drug for Stiff-Person Syndrome, and while there are currently no FDA-approved treatments, successful market entry could present substantial opportunities for the company.
See More
Kyverna Therapeutics Reports Phase 1 Data for miv-cel in Rheumatoid Arthritis
- Clinical Trial Update: Kyverna Therapeutics presented updated Phase 1 data for miv-cel in treating ACPA-positive, treatment-refractory rheumatoid arthritis at the EULAR 2026 congress, demonstrating the therapy's efficacy and safety.
- Significant Patient Response: Among the six patients receiving a single infusion of 100 million miv-cel CAR-T cells, 66.6% achieved an ACR70 response by week 36, indicating a substantial reduction in disease activity and showcasing the therapy's profound impact.
- Immune System Reset: Post-treatment, there was a marked depletion of autoreactive CD19-positive B cells and plasmablasts, with rapid declines in disease-associated autoantibodies like ACPA, IgA, and IgM, indicating a complete immune reset achieved by the therapy.
- Future Research Plans: Following the positive clinical data, Kyverna has initiated a Phase 2 trial and is advancing miv-cel in registrational studies for stiff person syndrome and generalized myasthenia gravis, highlighting the company's ongoing development potential in autoimmune diseases.
See More
Kyverna Appoints New CFO to Support Product Launch
- Executive Change: Kyverna Therapeutics has appointed Greg Martini as CFO to prepare for the potential commercial launch of its autoimmune disease cell therapy candidate miv-cel, with Martini previously serving as SVP and CFO at Ironwood Pharmaceuticals.
- Succession Plan: Martini succeeds Marc Grasso, who will remain with the company in a consulting role during the transition, ensuring stability and continuity amid leadership changes.
- Product Advancement: Kyverna is advancing miv-cel, also known as KYV-101, aiming for its first approval in stiff person syndrome, indicating the company's strategic positioning in the autoimmune disease treatment landscape.
- Market Outlook: As the BLA submission process for miv-cel progresses, Kyverna's market potential is expanding, particularly with positive clinical trial results in treating conditions like myasthenia gravis, laying a foundation for future growth.
See More
Kyverna Initiates Rolling BLA Process with FDA for miv-cel
- BLA Process Initiation: Kyverna Therapeutics (KYTX) has commenced the rolling Biologics License Application (BLA) process for its autoimmune CAR T therapy, miv-cel, marking a significant advancement in treating stiff person syndrome.
- Clinical Data Integration: The company has agreed with the FDA to include results from the KYSA-8 single-arm trial in the application, with the primary endpoint being the Timed 25-foot Walk (T2FW) test at 16 weeks, highlighting the focus on efficacy.
- Market Expectations: Kyverna anticipates launching miv-cel in 2027, which, if successful, could present substantial market opportunities, particularly in the rare disease space of stiff person syndrome.
- Additional Research Progress: In addition to stiff person syndrome, miv-cel is also under investigation for myasthenia gravis, further demonstrating its potential across various autoimmune diseases and bolstering investor confidence in the company.
See More
Kyverna Therapeutics Q1 Earnings Beat Expectations
- Earnings Highlights: Kyverna Therapeutics reported a Q1 GAAP EPS of -$0.66, beating expectations by $0.09, indicating a positive trend in financial performance despite ongoing losses.
- Cash Reserves: As of March 31, 2026, Kyverna holds $236.4 million in cash, cash equivalents, and marketable securities, providing ample funding support and ensuring a cash runway into 2028, which enhances operational stability.
- Clinical Progress: Kyverna's mid-stage trial for myasthenia gravis therapy yielded positive data, with deep responses noted despite a small sample size, potentially attracting increased investor interest in future treatment options.
- Funding Strategy: The company has filed for a $300 million mixed securities shelf to support ongoing R&D and market initiatives, reflecting confidence in future growth and strategic planning.
See More
Biopharma Investment Comparison: Kyverna vs. Vertex
- Kyverna's Clinical Challenges: Kyverna Therapeutics focuses on developing cell therapies for autoimmune diseases, with its lead candidate KYV-101 yet to gain approval, reporting a net loss of $161.3 million in FY 2025, highlighting the high costs of R&D and clinical trial risks, leaving its future market success uncertain.
- Vertex's Market Dominance: Vertex Pharmaceuticals holds a dominant position in the cystic fibrosis market, achieving $12 billion in revenue for FY 2025, a 9.6% increase, with a net income of nearly $4 billion, demonstrating strong demand for its established products and profitability.
- Risk and Reward Trade-off: Kyverna faces risks due to its lack of revenue and high R&D expenses, while Vertex relies heavily on cystic fibrosis treatment revenue, creating concentration risk if the market is disrupted, necessitating careful consideration by investors based on their risk tolerance.
- Future Growth Potential: While Kyverna has the potential to develop a breakthrough drug for Stiff-Person Syndrome, its market outlook remains unclear until regulatory approval is obtained; in contrast, Vertex shows a more robust growth outlook through continuous innovation and expansion into new treatment areas.
See More
Analyzing Biopharmaceutical Investment Choices
- Financial Performance: Vertex Pharmaceuticals achieved $12 billion in revenue for FY 2025, reflecting a 9.6% increase year-over-year, with a net income of nearly $4 billion and a net margin of approximately 33%, indicating strong market position and profitability in the treatment sector.
- R&D Risk Assessment: Kyverna Therapeutics, as a clinical-stage company, reported a net loss of $161.3 million in FY 2025 with no revenue, highlighting the high R&D costs associated with complex clinical trials and the uncertainty of future success.
- Market Competition Dynamics: Vertex holds a near-monopoly in the cystic fibrosis market while expanding into other therapeutic areas, whereas Kyverna focuses on developing cell therapies for autoimmune diseases, facing significant market risks and competitive pressures.
- Innovative Product Outlook: Kyverna's miv-cel has the potential to become a breakthrough drug for Stiff-Person Syndrome, and while there are currently no FDA-approved treatments, successful market entry could present substantial opportunities for the company.
See More
Kyverna Therapeutics Reports Phase 1 Data for miv-cel in Rheumatoid Arthritis
- Clinical Trial Update: Kyverna Therapeutics presented updated Phase 1 data for miv-cel in treating ACPA-positive, treatment-refractory rheumatoid arthritis at the EULAR 2026 congress, demonstrating the therapy's efficacy and safety.
- Significant Patient Response: Among the six patients receiving a single infusion of 100 million miv-cel CAR-T cells, 66.6% achieved an ACR70 response by week 36, indicating a substantial reduction in disease activity and showcasing the therapy's profound impact.
- Immune System Reset: Post-treatment, there was a marked depletion of autoreactive CD19-positive B cells and plasmablasts, with rapid declines in disease-associated autoantibodies like ACPA, IgA, and IgM, indicating a complete immune reset achieved by the therapy.
- Future Research Plans: Following the positive clinical data, Kyverna has initiated a Phase 2 trial and is advancing miv-cel in registrational studies for stiff person syndrome and generalized myasthenia gravis, highlighting the company's ongoing development potential in autoimmune diseases.
See More
Kyverna Appoints New CFO to Support Product Launch
- Executive Change: Kyverna Therapeutics has appointed Greg Martini as CFO to prepare for the potential commercial launch of its autoimmune disease cell therapy candidate miv-cel, with Martini previously serving as SVP and CFO at Ironwood Pharmaceuticals.
- Succession Plan: Martini succeeds Marc Grasso, who will remain with the company in a consulting role during the transition, ensuring stability and continuity amid leadership changes.
- Product Advancement: Kyverna is advancing miv-cel, also known as KYV-101, aiming for its first approval in stiff person syndrome, indicating the company's strategic positioning in the autoimmune disease treatment landscape.
- Market Outlook: As the BLA submission process for miv-cel progresses, Kyverna's market potential is expanding, particularly with positive clinical trial results in treating conditions like myasthenia gravis, laying a foundation for future growth.
See More
Kyverna Initiates Rolling BLA Process with FDA for miv-cel
- BLA Process Initiation: Kyverna Therapeutics (KYTX) has commenced the rolling Biologics License Application (BLA) process for its autoimmune CAR T therapy, miv-cel, marking a significant advancement in treating stiff person syndrome.
- Clinical Data Integration: The company has agreed with the FDA to include results from the KYSA-8 single-arm trial in the application, with the primary endpoint being the Timed 25-foot Walk (T2FW) test at 16 weeks, highlighting the focus on efficacy.
- Market Expectations: Kyverna anticipates launching miv-cel in 2027, which, if successful, could present substantial market opportunities, particularly in the rare disease space of stiff person syndrome.
- Additional Research Progress: In addition to stiff person syndrome, miv-cel is also under investigation for myasthenia gravis, further demonstrating its potential across various autoimmune diseases and bolstering investor confidence in the company.
See More
Kyverna Therapeutics Q1 Earnings Beat Expectations
- Earnings Highlights: Kyverna Therapeutics reported a Q1 GAAP EPS of -$0.66, beating expectations by $0.09, indicating a positive trend in financial performance despite ongoing losses.
- Cash Reserves: As of March 31, 2026, Kyverna holds $236.4 million in cash, cash equivalents, and marketable securities, providing ample funding support and ensuring a cash runway into 2028, which enhances operational stability.
- Clinical Progress: Kyverna's mid-stage trial for myasthenia gravis therapy yielded positive data, with deep responses noted despite a small sample size, potentially attracting increased investor interest in future treatment options.
- Funding Strategy: The company has filed for a $300 million mixed securities shelf to support ongoing R&D and market initiatives, reflecting confidence in future growth and strategic planning.
See More
