RNA medicines to treat, delay, and prevent diseases of the brain

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About us

Targeted delivery of RNA medicines to the brain. By silencing the genes that cause harm, we aim to preserve minds, protect memories, and enable our loved ones to live healthier, longer lives.

Precision medicine for the brain 

Built on three pillars:

  • Next-generation RNA medicines

  • Systemic administration and targeted brain delivery

  • Precision and prevention to transform CNS treatment

Next-generation RNAi

RNAi can redefine CNS treatment

RNAi offers unprecedented potency, durability, and precision for hitting disease targets at their origin, intracellularly. In recent years, RNAi has transformed treatment of liver and cardiometabolic diseases, but the full potential of RNAi for CNS diseases has yet to be realised.

Systemic brain delivery

Less invasive, targeted delivery of RNA

Major strides have been made in brain shuttle technologies, enabling the delivering of antibody and protein drugs across the blood-brain barrier (BBB).

We’re building on this foundation through partnerships and internal innovation to accelerate delivery of RNA medicines to the brain.

Precision and, one day,
prevention

Ensuring patients get the right medicine at the right time

Precision medicine transformed cancer care, and we believe a similar opportunity exists for many neurological disorders. By combining target biology, data-driven patient stratification, and biomarker-guided development, we aim to bring precision medicine to CNS diseases.

It's a path that could transform how we treat brain disorders—one patient, one gene, one memory at a time.

Devoted to making better brain medicines

World experts in RNAi, brain shuttles and CNS drug development have come together to expand treatment options for those suffering from neurological diseases.

Join Our Team

Jack O’Meara

Jack O’Meara

CEO & Co-Founder
Former Co-Founder and CEO of Ochre Bio.

Stuart Milstein

Stuart Milstein

Co-founder, Strategic Advisor
Pioneer in RNA delivery platforms and the development of RNA medicines.

Dave Hardwicke

Dave Hardwicke

Co-Founder, Head of BD & Ops
Biotech entrepreneur and operator; formerly AveXis, ONK Therapeutics and Pathway Bioventures.

Alycia Shoultz

Alycia Shoultz

Director, CNS Delivery Innovation
Drug hunter with over 20 years experience; formerly CMC and Platform Technology leader at Aliada Therapeutics, as well as Merck and Boehringer Ingelheim.

Andrew Cregan

Andrew Cregan

Director, Head of Finance and Administration
Finance leader with experience scaling life sciences companies, most recently as Head of Finance at ONK Therapeutics.

David Coughlan

David Coughlan

VP, Head of Early Development
Former Head of Translational Development at Ochre Bio, CTO at Afimmune, and VP Technical Operations at DS Biopharma.

Duygu Yilmaz

Duygu Yilmaz

Former Co-Founder and CSO at Panthura and Associate Director at Ochre Bio.
Director of RNA Therapeutics Discovery and Translational Science. Former Co-Founder and CSO at Panthura and Associate Director at Ochre Bio.

Michael Perkinton

Michael Perkinton

VP, Head of Research
Former Head of Discovery and Executive Director Bioscience at AstraZeneca Neuroscience.

Robyn McAdam

Robyn McAdam

Former Associate Principal Scientist in Neuroscience at AstraZeneca.

Ollie King

Ollie King

University of Cambridge PhD; Former Research Scientist at RxBiologics and GSK.

Amélie Bowden-Feytout

Amélie Bowden-Feytout

Former Lab Ops Manager at GSK.

Mallik Putta

Mallik Putta

Former Head of Guide RNA and mRNA Chemistry at Prime Medicine; Head of Oligonucleotide Chemistry at Korro Bio.

Sam Handelman

Sam Handelman

Marta Dragoshi

Marta Dragoshi

Exec Assistant to CEO
Former EA at Kite Pharma and Gilead Sciences.

Jack O’Meara - Board Member

Jack O’Meara - Board Member

CEO & Co-Founder
Former Co-Founder and CEO of Ochre Bio.

Stuart Milstein

Stuart Milstein

Board Member & Co-Founder
Pioneer in RNA delivery platforms and the development of RNA medicines.

Alex Brunicki

Alex Brunicki

Board Member

Alex Colville

Alex Colville

Board Observer

Andrea Zitna

Andrea Zitna

Board Observer

Jason Whitmire

Jason Whitmire

Board Observer

Uli Stilz

Uli Stilz

Board Observer

Mark Wolters

Mark Wolters

Peter Hoehn

Peter Hoehn

Lisa Taylor Ash

Lisa Taylor Ash

Dominic Walsh

Dominic Walsh

Lynne Hughes

Lynne Hughes

Why Now?

Standing on the shoulders of giants

Brain-shuttled RNAi has been decades in the making.

  • 1991
  • 1998
  • 2018
  • 2021
  • 2023
  • 2024
  • 2025
1991

Transferrin (TfR) receptor used for drug delivery

Scientists from Alkermes demonstrate the utility of using the TfR receptor as a means to deliver drug payloads to the brain.

Reference
1998

RNAi is discovered

Andrew Fire and Craig Mello uncover RNA interference in the nematode worm—revealing a new way to silence genes.

Reference
2018

First RNAi medicine approved

Alnylam’s Onpattro uses LNP-coated RNAi, delivered to liver cells by IV infusion for the treatment of hATTR amyloidosis

Reference
2021

First BBB crossing enzyme replacement therapy approved.

JCR’s pabinafusp alfa (Izcargo) is approved in Japan for Hunter syndrome, validating TfR brainshuttle technology for delivering protein/enzymereplacement cargo to the CNS.

Reference
2023

RNAi delivered to the CNS

First human validation of siRNA knockdown in the CNS via spinal cord injection. Stuart Milstein, Aerska Co-Founder, initiated work on this advancement to deliver siRNAs to the brain with his Alnylam colleagues.

Reference
2024

Trontinemab shows rapid, deep amyloid clearance at low doses

Roche showed that its TfR “Brain shuttle” antibody cleared amyloid fast and deeply using much lower doses than standard (‘non-shuttled’) mAbs.

Reference
2025

Aerska founded

Aerska launches to unlock precision RNAi delivery to the brain, building on decades of innovation in RNAi, BBB shuttles, and bioconjugation chemistry.

2025

Aerska founded

Aerska launches to unlock precision RNAi delivery to the brain, building on decades of innovation in RNAi, BBB shuttles, and

Our Values

Walk on Air

"against your better judgement." - Seamus Heaney

Ambition spurs us to tackle problems no one has solved (yet). We keep our sights on breakthroughs that will change patients’ lives. We take calculated risks, guided by a vision for the world we want to see rather than a fear of failing.

Time is Neurons

Patients deserve our urgency and precision. Getting to the clinic quickly relies on focus, efficient decision making, and scientific excellence. Urgency isn’t frenetic, it’s purposeful. Saving time today means saving neurons tomorrow.

Win or Learn

Sometimes experiments fail. We share our misses openly, extract lessons, and move forward. Every result is a data point, and every day is a school day.

We Before Me

Inspired by our namesake, our success relies on one another. We have the curiosity to seek other perspectives and the humility to adopt them. Open communication and healthy debate sharpens our thinking, but once a decision is made, we advance as one team.