Link Medicine, a drug developer for brain diseases previously backed by two strategic investors, has raised $20m in its fourth round of funding.

Link Medicine, a US-based drug developer for brain diseases previously backed by two strategic investors, has raised $20m in its fourth round of funding.

Two years ago, Link raised a $40m series C round from venture capital firms Clarus Ventures and SV Life Sciences and its previous investors have included the corporate venturing divisions Endurance Investments and Biogen Idec New Ventures.

James Mawson

James Mawson is founder and chief executive of Global Venturing.