Kezar Life Sciences Proclaims Constructive High Outcomes from Part 2 MISSION Trial Evaluating Zetomipzomib for the Therapy of Sufferers With Lupus Nephritis

  • 11 of 17 sufferers (64.7%) achieved an total renal response 50% or better discount in urine protein to creatinine ratio (UPCR) at 6 months

  • 6 of 17 sufferers (35.2%) achieved an entire renal response, together with a UPCR of 0.5 or much less at 6 months

  • Zetomipzomib continues to reveal a positive security and tolerability profile for administration over the 6-month therapy interval

  • Enchancment seen in exploratory measures of extra-renal illness exercise related to systemic lupus erythematosus (SLE) in sufferers who’ve accomplished their therapy

  • The corporate’s convention name and webcast will happen at the moment at 4:30 p.m. ET

SOUTH SAN FRANCISCO, Calif., June 27, 2022–(BUSINESS WIRE)–Kezar Life Sciences, Inc. (Nasdaq: KZR), a clinical-stage biotechnology firm discovering and creating breakthrough remedies for immune-mediated and oncology issues, at the moment introduced constructive early outcomes from the Part 2 MISSION scientific trial evaluating zetomipzomib, a novel first-in-class selective immunoproteasome inhibitor, in sufferers with energetic lupus nephritis (LN).

“The primary outcomes of MISSION section 2 present a clinically important international renal response to zetomipzomib after 6 months, with out high-dose induction therapy. Sufferers within the trial additionally skilled reductions in extra-renal manifestations of lupus. tolerated and steroid-sparing – all necessary attributes for sufferers with autoimmune illness who are sometimes younger and energetic,” mentioned Noreen R. Henig, MD, Chief Medical Officer of Kezar. “Primarily based on these outcomes, we plan to proceed creating zetomipzomib for sufferers with lupus nephritis, in addition to evaluating improvement alternatives for systemic lupus erythematosus.”

The Part 2 MISSION scientific trial is an open-label examine designed to reveal the response charge of zetomipzomib in sufferers with energetic LN. Throughout the 24-week therapy interval, sufferers acquired zetomipzomib 60 mg subcutaneously as soon as weekly (first dose 30 mg) along with secure background remedy. Finish of Therapy (EOT) assessments occurred at Week 25, with examine completion at Week 37. Sufferers within the Part 2 MISSION scientific trial acquired zetomipzomib with out induction remedy , which is a big distinction from different lately revealed LN trials.

The first efficacy endpoint of the trial was the proportion of sufferers attaining an total renal response (ORR), measured as a 50% or better discount in urine protein to creatinine ratio (UPCR) at EOT . A key secondary efficacy endpoint was the variety of sufferers with an entire renal response (CRR), measured as an absolute discount in proteinuria values ​​to a UPCR of 0.5 or much less, with renal perform preserved ( eGFR), and the usage of corticosteroids at 10 mg or much less. much less prednisone/prednisone equal and no use of prohibited medicine.

Abstract of predominant outcomes

On this first-line section 2 evaluation, 17 of the 21 sufferers included within the trial reached the top of therapy:

  • 11 of 17 sufferers (64.7%) achieved ORR measured as a 50% or better discount in UPCR at EOT from baseline, the first efficacy endpoint of the scientific trial.

  • 6 of 17 sufferers (35.2%) achieved a CRR of 0.5 UPCR or much less, all different protocol definitions being met.

  • The advantage of zetomipzomib therapy was maintained or enhanced after the top of therapy, based mostly on assessments at week 29.

  • The imply each day background prednisone dose was diminished from 19.2 mg at baseline to 9.1 mg at EOT and additional diminished at week 29.

  • Imply eGFR (estimated glomerular filtration charge) remained secure between baseline and EOT.

Moreover, exploratory measures of SLE-associated extra-renal illness exercise improved in sufferers who accomplished the trial. Sufferers confirmed a imply discount in main SLE illness exercise scores and normalization of biomarkers according to diminished SLE illness exercise.


Zetomipzomib was nicely tolerated throughout the therapy interval. Adversarial occasions had been typically gentle to reasonable (grade 1 or 2) according to earlier stories. The commonest treatment-emergent hostile occasions (TEAEs) had been injection web site response, pyrexia (fever), headache, or nausea with or with out vomiting. As beforehand reported, two sufferers skilled severe hostile occasions (SAEs) throughout the examine. One affected person had a protracted acute migraine associated to zetomipzomib however accomplished therapy. The opposite affected person discontinued resulting from worsening pulmonary hypertension, urinary tract an infection, and acute kidney damage, all of which had been deemed unrelated to zetomipzomib. Early discontinuations occurred in 4 of 21 sufferers. No opportunistic or grade 3 infections had been reported within the trial.

Convention name and webcast

Kezar Life Sciences will host a webcast and convention name at the moment, June 27, 2022, at 4:30 p.m. ET to debate key knowledge from the MISSION Part 2 scientific trial. To entry the audio webcast with slides, please go to the “Occasions and Displays” web page within the Buyers and Media part of the Firm’s web site at The decision will also be accessed by dialing +1 (800) 309-0220 (home) or +1 (805) 309-0220 (worldwide) with convention ID 6423042#.

The dwell audio webcast with slides will also be accessed right here:

For these unable to take part within the convention name or webcast, a replay might be out there for 90 days on the Firm’s web site.

About zetomipzomib (KZR-616)

Zetomipzomib (KZR-616) is a novel, first-in-class selective immunoproteasome inhibitor with broad therapeutic potential in a number of autoimmune ailments. Preclinical analysis demonstrates that selective immunoproteasome inhibition elicits a broad anti-inflammatory response in animal fashions of a number of autoimmune ailments, whereas avoiding immunosuppression. Information generated from Part 1 scientific trials present proof that zetomipzomib has a positive security and tolerability profile for improvement in extreme continual autoimmune ailments.

About Lupus Nephritis

Lupus nephritis (LN) is among the most severe problems of systemic lupus erythematosus (SLE). LN is a illness comprising a spectrum of vascular, glomerular, and tubulointerstitial lesions and develops in roughly 50% of sufferers with SLE inside 10 years of their preliminary analysis. LN is related to appreciable morbidity, together with an elevated danger of end-stage renal illness requiring dialysis or kidney transplantation and an elevated danger of loss of life. There are a restricted variety of accredited therapies for the therapy of LN. Administration normally consists of induction remedy to realize remission and long-term upkeep remedy to stop relapses.

About Kezar Life Sciences

Kezar Life Sciences is a clinical-stage biopharmaceutical firm discovering and creating breakthrough remedies for immune-mediated and oncology issues. The corporate is a pioneer within the subject of small molecule therapies that harness grasp regulators of mobile perform to inhibit a number of illness drivers by means of single and potent targets. Zetomipzomib, its predominant improvement asset, is a selective immunoproteasome inhibitor being evaluated in a section 2 scientific trial in lupus nephritis. This product candidate additionally has the potential to deal with a number of immune-mediated continual ailments. KZR-261 is the corporate’s first scientific most cancers candidate concentrating on the Sec61 translocon and protein secretory pathway. A Part 1, open-label, dose-escalation scientific trial of KZR-261 to evaluate security, tolerability, and preliminary tumor exercise in stable tumors is ongoing. For extra info, go to

Warning Relating to Ahead-Trying Statements

This press launch comprises forward-looking statements inside the that means of the Non-public Securities Litigation Reform Act of 1995. Phrases equivalent to “could”, “will”, “ought to”, “anticipate”, “consider”, “plan and comparable expressions (in addition to different phrases or expressions that confer with future occasions, circumstances or circumstances) are supposed to establish forward-looking statements. These forward-looking statements are based mostly on Kezar’s expectations and assumptions as of the date of this press launch. Every of those forward-looking statements includes dangers and uncertainties that might trigger Kezar’s future scientific improvement packages, outcomes or efficiency to vary materially from these expressed or implied by the forward-looking statements. Ahead-looking statements on this press launch embrace, however usually are not restricted to, statements relating to the design, progress, timing, scope and outcomes of scientific trials, the preliminary nature of key knowledge, regulatory improvement deliberate and future scientific trials involving Kezar’s drug product candidates, the chance that the information will help future improvement and therapeutic potential, the affiliation of the information with therapy outcomes, and the chance of acquiring regulatory approval of product candidates of Kezar. Many components may trigger present expectations to vary from precise outcomes, together with the efficiency of major knowledge audit and verification procedures, sudden security or efficacy knowledge noticed throughout scientific research. , adjustments in anticipated or current competitors, uncertainties and the timing of the regulatory approval course of. and unexpected litigation or different disputes. Different components that might trigger precise outcomes to vary materially from these expressed or implied by the forward-looking statements on this press launch are mentioned in Kezar’s filings with the US Securities and Alternate Fee, together with the “danger components” contained therein. Besides as required by regulation, Kezar undertakes no obligation to replace any forward-looking statements contained herein to mirror any change in expectations, even when new info turns into out there.

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Gitanjali Jain
Vice President, Investor Relations and Exterior Affairs

Slang Companions

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