We dare for more in every aspect of what we do – advancing our portfolio of precision therapies for central nervous system disorders – to make the impossible possible.

The field of neurology has been primed for a revolution in how new therapies are discovered. We have taken the charge to develop them.

The needs of patients with CNS disorders are devastatingly urgent. Our mission is to help patients by delivering life-altering treatments faster and more effectively than has ever been done before – and to do it again and again.


We come to work every single day with a drive to create lasting impact for humans in need.

About Us

Praxis Precision Medicines is a clinical-stage biopharmaceutical company translating insights from genetic epilepsies into the development of therapies for central nervous system, or CNS, disorders characterized by neuronal excitation-inhibition imbalance.

Praxis is the process of using a theory or learning in a practical way. It is the mindset that allows us to simplify the complex and independently define a solution without being restricted by predefined processes.

Our Expanded Access Policy

Our Approach

Each of our programs is based on four key principles that we believe will both increase the probability of success and allow us to efficiently translate insights into high-impact therapies:


Focus on therapeutic targets identified through human genetics.

Translational Tools

Utilize translational tools to validate the potential of our targets and product candidates and potentially provide early proof of biology.


Apply patient-guided development strategies to deliver on what patients actually need.

Efficient & Rigorous

Pursue efficient, rigorous clinical development paths to proof-of-concept in humans.

Current Developmental Pipeline

Developing Treatments Inspired by the Genetics of Epilepsy

Enabled by Two Platforms

Targeting movement disorders & epilepsies connected by neuronal imbalance

Leadership Team

We have attracted a talented team of scientists and researchers in genetics and biology, chemistry and translational medicine as well as business leaders with established track records of successfully executing innovative drug discovery and development programs.

Marcio Souza portrait

Marcio Souza

President & Chief Executive Officer

Steve Petrou portrait

Steve Petrou

Co-Founder & Chief Scientific Officer

Alyssa Wyant portrait

Alyssa Wyant

Chief Regulatory & Quality Officer

Tim Kelly portrait

Tim Kelly

Chief Financial Officer

Kelly McCue portrait

Kelly McCue

Chief People Officer

Karl Hansen portrait

Karl Hansen

Chief Technical Operations Officer

Megan Sniecinski portrait

Megan Sniecinski

Chief Business Officer

Alex Nemiroff portrait

Alex Nemiroff

General Counsel

Brian Spar

Chief of Staff

Board of Directors

Dean Mitchell portrait

Dean Mitchell

Chairman of the Board

Greg Norden portrait

Greg Norden


Scientific Advisory Board

Matt Might



Our mission is to help patients by delivering life-altering treatments faster and more effectively than has ever been done before. Agnostic to the source of an idea, we work together to find the most practical solutions for patients as quickly and efficiently as possible. We need talented and motivated individuals to make this happen.

Building Together

At Praxis we are all involved in building the company together and each employee has an impact. We are challenged to question each other and our own assumptions to deliver treatments for patients and caregivers.

Caring with Candor

As a team-based organization we show care for each other by giving and receiving candid feedback. We support curiosity and ownership for all aspects of our business. This environment fuels our growth and propels us forward.

Passion & Persistence

The work we do is demanding. Praxons are passionate and persistent about transforming neuroscience because of the incredible need to positively change the lives of patients with CNS disorders.


We DARE FOR MORE™ in every aspect of our journey, from the patients we are working for, to the portfolio we build and advance every day.

We share a common vision of reshaping the human condition into a more freeing and fulfilled existence by developing high impact medicines for patients and families affected by and living with complex brain disorders.