Company: VERA
Filing Date: 2025-02-28
Form Type: 10-K
Source: 0000950170-25-029969
Chunk: 196

Company: Vera Therapeutics, Inc.
Filing Date: 2025-02-28
Form: 10-K
Item: Item 1
Chunk 196
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V disease in kidney transplant recipients (BKV nephropathy) and being considered for hematopoietic stem cell transplant (HSCT) recipients (BKV-associated hemorrhagic cystitis). MAU868 also has neutralizing activity in vitro against the closely related JC virus, the cause of progressive multifocal leukoencephalopathy.

Figure 12: MAU868 blocks BK virion binding

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Clinical development of MAU868

Phase 1

A first-in-human, randomized, blinded, placebo-controlled, single ascending dose study to assess the safety, tolerability, and pharmacokinetics of MAU868 following IV or SC administration to healthy adult subjects was performed. Administration of up to 100 mg/kg MAU868 IV and 3 mg/kg MAU868 SC were well tolerated. No deaths or serious adverse events were reported, and there were no adverse events that led to the discontinuation of the drug or the study.

Phase 2

We completed a Phase 2 randomized, double-blind, placebo-controlled clinical trial designed to assess the safety, tolerability, and efficacy of MAU868 for the treatment of allograft-threatening BKV infection in kidney (or kidney-pancreas) transplant recipients in 2022. Two sequential cohorts enrolled a total of 28 participants with BK viremia. As shown in Figure 13, each cohort was designed to randomize approximately 12 participants (8 to MAU868 and 4 to placebo), for which Cohort 1 (1350 mg IV approximately every 28 days for a total of 4 doses) and Cohort 2 (6750 mg IV on Day 1, 1350 mg IV every 28 days for 3 additional doses) have completed dosing.

The primary objective of the clinical trial was to assess the safety and tolerability of MAU868, with secondary objectives to assess the impact of MAU868 on BKV related outcomes. MAU868 has been shown in an interim analysis of week 12 data from Cohorts 1 and 2 to be well-tolerated and showed a greater proportion of participants with decrease in BK plasma viral load versus placebo.

At the ASN 2022 conference, final results from the Phase 2 clinical trial of MAU868 versus placebo showed that MAU868 was well tolerated and demonstrated clinically meaningful reductions in BK antiviral activity through 36 weeks in kidney transplant patients with BK viremia.   

Figure 13: MAU868 phase 2 clinical trial design