SynAct Pharma takes advantage of new toxicology results and new tablet formulation to re-design and optimize the study programme with AP1189 in Nephrotic Syndrome

SynAct Pharma today announces that the company intends to redesign the phase 2 development program with the lead asset AP1189 in Nephrotic Syndrome (NS). The aim of this is to take advantage of longer treatment periods now possible following new preclinical documentation published on November 5th this year. In addition, the redesigned study will take advantage of the company´s newly developed tablet, published on October 15 this year.

The major aim of the redesign will be to increase dosing from four weeks to three months and change from dosing with the AP1189 suspension and instead dose with tablets. The benefit of this redesign is that it increases the likelihood to show significant treatment effect on urinary protein excretion, the main efficacy readout in the study, and increase patient compliance as a once daily dosing with a tablet is much more convenient than daily intake of an oral suspension.

SynAct Pharma’s phase 2 study in NS is conducted in patients with idiopathic membranous nephropathy (iMN), an autoimmune kidney disease associated with development of NS and is ongoing at sites in Denmark and Sweden. In the current study, an exploratory, randomized, double-blind, multicenter, placebo-controlled study, the AP1189 compound versus placebo is given once-daily as add-on to ACE-inhibitor treatment in patients with NS due to iMN. As for most other clinical studies, recruitment has suffered from the effects associated with the COVID-19 pandemic. Consequently, recruitment to the current study is therefore not completed.

The current study focuses on safety, tolerability, and pharmacokinetics (PK). The latter is of specific importance as the major loss of protein through the kidneys potentially could have marked effects on the body’s exposure to AP1189 and thereby the efficacy of a given dose. In addition, efficacy is evaluated though the compound’s ability to reduce urinary protein excretion. However, the full effect of the compound’s ability to reduce urinary protein excretion is not likely to take place during a 4-week treatment period. The possibility to dose for three months is therefore a major advantage for the project moving forward.

“The redesign will take benefit of the already generated experiences in the patient population and the collected data and samples will be an integrated part of the final study report. However, in addition to the benefits of three-month dosing and the new tablets, we intend to reduce the complexity of the study design, especially related to PK sampling and thereby increase acceptability for the patients and with this ease study recruitment. The possibility to broaden recruitment to other indications associated with NS is currently examined as it would give the possibility to increase recruitment rates significantly. Finally, the redesign has been discussed with potential future pharma partners and is likely to improve the commercial attractiveness even further. We plan to present the new study design with updated timelines in continuation of the release of key results of our BEGIN study in RA” says Thomas Jonassen, CEO, SynAct Pharma.

The information was submitted, through the agency of the contact person below, for publication on November 11, 2021 

For further information about SynAct Pharma AB, please contact:  

Jeppe Øvlesen                                   Thomas Jonassen 
CEO, SynAct Pharma AB                   CSO, SynAct Pharma AB 
Phone: +45 28 44 75 67                     Phone: +45 40 15 66 69  
Mail: joo@synactpharma.com
            Mail: tj@synactpharma.com