DUBLIN – Lassen Therapeutics Inc. is following the Enleofen Bio Pte Ltd. playbook by targeting the interleukin-11 receptor (IL-11R) as a novel approach to combating both fibrosis and cancer. It’s a move that paid off handsomely earlier this year for Singapore-based Enleofen, which entered a broad alliance in fibrosis with Boehringer Ingelheim GmbH, which could generate up to $1 billion in milestones for each product emanating from the partnership. San Diego-based Lassen is now laying claim to that space as well and has just emerged from stealth mode, having closed but not previously disclosed a $31 million series A round.