Thanks Mercedes, and thank you all for joining us. Everyone at Akebia has entered 2023 with renewed optimism. Through the past year our team's work and the strategic decisions we've made have put us in a position to thrive as a company.
We continue to engage with the kidney community and support our patients on Auryxia.
We've advanced the regulatory process for vadadustat in Europe to a point where we're now approaching a potential marketing authorization, and we're excited to look ahead as we evaluate and drive potential pipeline expansion opportunities, including developing hypoxia-inducible factor prolyl hydroxylase inhibitor compounds for potential indications of serious unmet need.
We have a team that works with purpose and I'm proud of their accomplishments as they've delivered a company today with a strong revenue base, multiple near-term catalysts, and mid and long-term product development opportunities.
Now let's begin with Auryxia. In 2022, we reported net product revenue growth of nearly 25% over 2021, exceeding the revenue target guidance we established mid-year. Achieving net product revenue growth while the phosphate binder market continues to decline, is a credit to our dedicated commercial team that works hard to ensure thousands of patients have access to Auryxia.
Last year, we launched a new commercial model that aligns to customer objectives. We believe the model will enable our team to continue high-touch engagement with high value individual prescribers and entities that are focused on delivering coordinated cost effective care for advanced CKD patients, including those receiving dialysis.
Auryxia net product revenue is integral to our operating plan as we continue to support the regulatory processes for vadadustat globally and invest in our other drug research and development activities.
Regarding vadadustat, we're quickly approaching a potential milestone, in late February, the Committee for Medicinal Products for Human Use or CHMP of the EMA adopted a positive opinion recommending that the European Commission approve Vafseo, vadadustat for the treatment of symptomatic anemia associated with CKD in adults on chronic maintenance dialysis.
We anticipated potential marketing authorization for Vafseo to be granted by the EC in May of this year, which would be applicable to all 30 European Union member states and affiliated countries.
Beyond the EU we also anticipate a regulatory decision for vadadustat for ACCESS Consortium countries, the UK, Switzerland and Australia later this year.
We are dedicated to delivering an oral treatment option to patients with anemia due to chronic kidney disease and continue our efforts to select a potential partner in Europe to commercialize Vafseo if approved. We don't expect to formalize a partner engagement until sometime after Vafseo receives marketing authorization, but we're deeply engaged in the process to select a partner that can maximize the potential value of Vafseo while quickly reaching appropriate patients.
Vafseo marketing authorization in Europe would mean vadadustat would be approved in 31 countries as it's currently approved and marketed in Japan by MTPC for dialysis-dependent and non-dialysis-dependent adult patients. We believe in the favorable benefit risk profile of vadadustat. And to that end, we continue to pursue a potential path for approval in the U.S. for patients on dialysis.
Last year we submitted a formal dispute resolution request with the FDA regarding the complete response letter for vadadustat, specifically related to adult patients on dialysis. In February of 2023, we received a second interim response from the FDA indicating that due to agency resource constraints and staffing needs, Dr. Peter Stein, the Director of the Office of New Drugs or OND, will serve as the deciding authority for the appeal.
Dr. Stein has indicated he will seek internal consultation with nephrology, cardiology and liver safety experts in the OND to complete the review, and we expect to receive a response 30 days from when Dr. Stein completes his discussions.
We continue to engage with Dr. Stein and the OND and will update investors on this process as appropriate.
Now vadadustat is also being evaluated for other indications, notably acute respiratory distress syndrome or ARDS. Last year, we shared data from an investigator sponsored clinical study with UTHealth, evaluating vadadustat for the prevention and treatment of ARDS in patients with COVID-19 and hypoxia. Since that time, we've continued to work with UTHealth to plan an adequate well-controlled study in a broad patient population beyond COVID related ARDS in an acute setting, and we expect that study to begin enrolling patients this year.
Within our four walls, we have the expertise to innovate and develop medicines to address patients' unmet needs. Further, our commercial team continues to keep us connected to patients while also enabling a product revenue stream to fund operations and pipeline expansion. To that end, we're also actively assessing regulatory and development paths for vadadustat in other acute treatment indications.
This year we also plan to advance preclinical development of multiple novel HIF-PHI compounds for serious disease areas with limited or no treatment options, such as acute kidney injury.
Our patient focus drives us thoughtfully to invest in new programs to expand our pipeline. We're eager to do that as we look forward into 2023 and beyond. Again, we're able to do this because of the financial base we've strengthened through the past year.
And to that end, I'll ask Dave to talk more about our operating plan and our financials.