Expansion Therapeutics gets $55.3 million funding to back rare disease portfolio

4 January 2018

Expansion Therapeutics, a new 5AM Ventures formed private company focused on the discovery and development of ribonucleic acid (RNA) targeted small molecule medicines, announced today the close of a $55.3 million Series A financing.

This was co-led by 5AM Ventures, Kleiner Perkins, Novartis Venture Fund, and Sanofi Ventures with participation from RA Capital Management and Alexandria Venture Investments.

The proceeds will advance Expansion’s portfolio of small molecule drugs targeting key human disease-driving RNAs with an initial focus on expansion repeat disorders, a set of approximately 30 genetic diseases that currently have no satisfactory treatments.

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