Our Story & Leadership

35 years of translational neuroscience.

From the discovery of the FMR1 gene to the late-stage clinical development of arbaclofen — a quarter-century of pioneering a new approach to Autism Spectrum Disorder and Fragile X Syndrome.

35 years of translational neuroscience leading to arbaclofen: foundational discoveries linking mGluR5 signaling to Fragile X, the founding of Seaside Therapeutics, advancement of arbaclofen through Phase 3 trials, and the founding of Allos Pharma.
35 years of translational neuroscience leading to arbaclofen.

Leadership

The team behind the science.

Portrait of Mark Bear, PhD

Mark Bear, PhD

Co-founder · Chair, Scientific Advisory Board · Board Director

Picower Professor of Neuroscience in The Picower Institute for Learning and Memory and the Department of Brain and Cognitive Sciences at MIT.

HHMI Investigator 1994–2015; Director of the Picower Institute 2007–2009. Member of the National Academy of Medicine.

Before moving to MIT in 2003, he served 17 years on the faculty of Brown University and the Brown University School of Medicine.

His foundational discoveries linking mGluR5 signaling to Fragile X biology helped define an entire field of neurodevelopmental therapeutics.

Portrait of Randall Carpenter, MD

Randall Carpenter, MD

Co-founder · CEO & Chief Medical Officer · Board Director

Previously founded Seaside Therapeutics, which advanced arbaclofen through Phase 3 trials in Fragile X Syndrome.

Member of the Translational Medicine Advisory Board of the Rett Syndrome Research Trust, advisory boards of EU-AIMS and the Translational Neuroscience Center at Boston Children's Hospital.

In industry, led translational medicine teams responsible for eight IND submissions and dozens of GCP-compliant clinical trials.

Prior academic faculty appointments at the University of Washington and Wake Forest University in anesthesiology, pain management, and translational medicine.

Portrait of Mads Emil Matthiesen, M.Sc.

Mads Emil Matthiesen, M.Sc.

Board Director

Mads Emil Matthiesen is a life sciences executive and entrepreneur with experience scaling healthcare companies from early innovation to clinical adoption and commercial traction. He is CEO, co-founder of CathVision, co-founder of FindZebra, and contributes to Allos Pharma's strategy, financing, and company development.

Portrait of Paul Wang, M.D.

Paul Wang, M.D.

Chair, Clinical Advisory Board

Paul Wang, M.D., is a developmental-behavioral pediatrician and autism expert with deep experience across academia, industry, and the non-profit sector. As an executive at Seaside Therapeutics, he led the design and execution of pioneering Phase 2 and 3 trials in autism and Fragile X syndrome.

At Autism Speaks and now at the Simons Foundation, Paul has led advocacy, awareness, and science funding efforts related to autism.

From 2020-2024, Paul was a federally-appointed member of the Interagency Autism Coordinating Committee.

Portrait of Karen Walton-Bowen, M.Sc., C.Stat.

Karen Walton-Bowen, M.Sc., C.Stat.

Vice President Program Operations

With more than 40 years of experience, Ms. Walton-Bowen is an experienced biostatistical analysis, clinical operations and development leader who supports Allos in program development and execution, vendor management, and cross-functional coordination. She has deep experience managing all aspects of the arbaclofen development program worldwide over the past 15 years, first at Seaside Therapeutics and then at the Simons Foundation.

She has worked in big pharma (AstraZeneca, Merck), small pharma, and biotechnology (Genzyme) across multiple rare disease and neuroscience programs and brings deep operational insight into clinical planning and execution, manufacturing, regulatory documentation, and oversight of CRO relationships.

Her experience ensures continuity, quality, and timely delivery of key program milestones worldwide.

Portrait of Mark Ammann, Pharm.D.

Mark Ammann, Pharm.D.

Senior Vice President, Regulatory Affairs

Mark is a highly experienced pharmaceutical regulatory executive. He brings more than 30 years of industry experience on both the Sponsor and consulting sides of the business, with expertise in many therapeutic areas including psychiatry, neurology, cardiovascular, diabetes, metabolic, inflammation, oncology, dermatology and nephrology.

In May 2023 Mark co-Founded Quantum Regulatory Solutions, a specialized Regulatory consulting company. Prior to consulting, Mark worked for three major pharmaceutical companies (Pfizer, Pharmacia and Novartis) in roles of increasing responsibility.

Mark excels at building and leading Regulatory teams, full business financial management, and providing expert Regulatory consulting services. Mark received a Doctor of Pharmacy Degree from the University of Michigan College of Pharmacy.

Allos Pharma's founders, Mark Bear, PhD, and Randall Carpenter, MD, pioneered the strategy of targeting the underlying molecular pathophysiology of autism — rather than its symptoms.

When Dr. Bear's discoveries linked mGluR5 signaling to the biology of Fragile X syndrome, the team recognized an opportunity to treat the root cause of a neurodevelopmental disorder for the first time. They built that vision into Seaside Therapeutics, advancing arbaclofen through Phase 3 trials in Fragile X syndrome, and continue it today at Allos.

Their foundational science helped define an entire field: major pharmaceutical companies, including Roche and Novartis, redirected their CNS research programs toward Fragile X based on these discoveries.

More than two decades later, that same conviction and perseverance drive Allos' mission to bring arbaclofen to the patients and families who need it.

Timeline

A quarter century of progress.

  1. 2001

    Foundational mGluR5–FXS discoveries by Mark Bear and colleagues link receptor signaling to the molecular biology of Fragile X.

  2. 2005

    Seaside Therapeutics founded by Mark Bear, PhD and Randall Carpenter, MD to translate the science into medicine.

  3. ~2010

    Major pharma — including Roche and Novartis — pivot CNS research programs toward Fragile X based on Bear's discoveries.

  4. 2012

    Seaside advances arbaclofen through Phase 3 trials in Fragile X Syndrome.

  5. 2020

    Allos Pharma secures the exclusive FXS license to arbaclofen and prepares the regulatory path.

  6. 2023

    Three formal FDA meetings completed; alignment on a single confirmatory Phase 3 trial in FXS.

  7. 2025

    Allos acquires global rights to arbaclofen and completes statistical analyses replicating broad therapeutic benefits across the ASD trials.

Partnership

Let's bring arbaclofen to the patients and families who need it.

Partner with Allos to accelerate the first disease-modifying treatment for ASD and Fragile X Syndrome.