BioMarin and n-Lorem Foundation Enter Early Research Collaboration to Develop Potential First-in-Disease Medicine for Newly Identified ReNU Syndrome
BioMarin Pharmaceutical Inc. (Nasdaq: BMRN) said it entered a strategic collaboration and global exclusive license with the n-Lorem Foundation to develop an investigational antisense oligonucleotide targeting the RNU4-2 (n.64_65insT) variant for ReNU syndrome. The variant is estimated at about 75% of cases. BioMarin and n-Lorem will run preclinical studies and select a lead candidate for clinical trials. No approved medicines exist for ReNU syndrome.
How this was made

The 30-second read
Why it matters
BioMarin will lead preclinical studies and candidate selection for an investigational antisense oligonucleotide aimed at the underlying genetic cause, with clinical studies planned after lead selection.
Market read
A new first-in-disease ASO collaboration provides pipeline expansion news for BioMarin, but without clinical data or deal economics, limiting immediate trading conviction.
What to watch
Key valuation drivers are missing here: expected IND-enabling timeline, funding economics of the license, and whether BioMarin will control manufacturing and regulatory strategy for the ASO candidate.
Background
ReNU syndrome was identified in 2024 and has no approved medicines; the collaboration targets an RNU4-2 variant estimated to represent about 75% of cases.
Ticker impact
BioMarin announced a strategic collaboration and global exclusive license with n-Lorem to develop a first-in-disease antisense ASO for ReNU syndrome targeting the RNU4-2 variant.
Near-term reaction likely modest to positive, with follow-through dependent on preclinical-to-clinical execution and any future trial updates.
This is a new, company-specific development agreement and license, but the release provides no efficacy/safety data, timelines, or funding details, limiting immediate valuation impact.
Market effects
Reinforces continued interest in antisense oligonucleotide (ASO) platforms and rare genetic disease development partnerships.
Limited, primarily affects US-listed rare-disease biotech sentiment.
Global exclusive license and worldwide patient targeting may support broader investor interest in rare neurodevelopmental therapeutics.
Counterpoint
Because the program is still preclinical with no disclosed milestones, the market may already price in partnership optionality, making the incremental impact smaller than typical pipeline headlines.
Key entities
- public_companyBioMarin Pharmaceutical Inc.
US-listed rare-disease biotech initiating a global exclusive license collaboration to develop an ASO for ReNU syndrome.
- nonprofitn-Lorem Foundation
Nonprofit focused on antisense technology and individualized ASO development for nano-rare patients.
- genetic_targetRNU4-2 (n.64_65insT) variant
Genetic variant targeted by the investigational ASO, estimated to account for ~75% of ReNU syndrome cases.


