Blueprint Medicines to Expand Precision Therapy Leadership in Lung Cancer with Acquisition of Lengo Therapeutics

On November 29, 2021 Blueprint Medicines Corporation (NASDAQ: BPMC) reported that the company has entered into a definitive agreement under which it will acquire Lengo Therapeutics, a privately held precision oncology company, for $250 million in cash plus up to $215 million in additional potential payments based on the achievement of certain regulatory approval and sales-based milestones (Press release, Bristol-Myers Squibb, NOV 29, 2021, View Source [SID1234596194]).

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The acquisition includes Lengo Therapeutics’ lead compound LNG-451, a potential best-in-class oral precision therapy in development for the treatment of non-small cell lung cancer (NSCLC) in patients with EGFR exon 20 insertion mutations. Preclinical data show LNG-451 potently inhibits all common EGFR exon 20 insertion variants with marked selectivity over wild-type EGFR and off-target kinases. In addition, LNG-451 is highly brain-penetrant and has demonstrated compelling activity in a preclinical intracranial disease model.

Based on these and other preclinical data, Lengo Therapeutics anticipates it will submit an investigational new drug (IND) application for LNG-451 to the U.S. Food and Drug Administration (FDA) in December 2021.

"Our acquisition of Lengo Therapeutics deepens our commitment to advancing precision oncology therapies and specifically expands our opportunity to transform treatment for patients with EGFR-driven lung cancer," said Jeff Albers, Chief Executive Officer of Blueprint Medicines. "The Lengo team has done tremendous work in designing a highly selective therapeutic candidate tailored to the needs of patients with EGFR exon 20 lung cancer, including features with the potential to enable treatment or prevention of brain metastases. With our integrated precision therapy research, development and commercial capabilities, Blueprint Medicines is perfectly positioned to carry forward this compound into the clinic and deliver on our goal to meaningfully advance care for NSCLC patients with EGFR exon 20 insertion mutations."

"With a proven track record of developing and delivering precision therapies for patients with significant medical needs and a compelling lung cancer portfolio, Blueprint Medicines is unique in its abilities to quickly progress LNG-451," said Enoch Kariuki, Chief Executive Officer of Lengo Therapeutics. "From our inception, the Lengo Therapeutics team has focused on generating best-in-class compound profiles, prioritizing those with brain penetration along with high potency and selectivity, like LNG-451. I am incredibly proud of the team for getting us to this point and excited to see the programs continue under Blueprint Medicines’ leadership."

With the addition of LNG-451, Blueprint Medicines will have three investigational compounds, each with best-in-class potential, that cover the majority of all activating mutations in EGFR, the second most common oncogenic driver in NSCLC.1 Approximately 12 percent of activating EGFR mutations are exon 20 insertions and significant medical need remains for patients harboring these mutations, including new treatment options with improved tolerability, combinability and enhanced brain penetration to treat or prevent brain metastases.1

The acquisition also brings additional undisclosed preclinical precision oncology programs and research tools, including a catalog of covalent, highly brain penetrant kinase inhibitors that Blueprint Medicines plans to add to its proprietary compound library to further enable future drug discovery efforts.

Blueprint Medicines anticipates the acquisition will close in the fourth quarter of 2021, subject to certain conditions, including the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act and other customary conditions.

Goldman Sachs & Co. LLC is acting as financial advisor to Blueprint Medicines and Goodwin Procter LLP is acting as its legal counsel. Centerview Partners LLC is acting as financial advisor to Lengo Therapeutics and Cooley LLP is acting as its legal counsel.

Conference Call Information

Blueprint Medicines will host a live webcast beginning at 8:30 a.m. ET today to discuss the planned acquisition of Lengo Therapeutics. To access the live call, please dial 844-200-6205 (domestic) or 929-526-1599 (international) and refer to conference ID 936793. A webcast of the conference call will be available under "Events and Presentations" in the Investors & Media section of Blueprint Medicines’ website at View Source The archived webcast will be available on Blueprint Medicines’ website approximately two hours after the conference call and will be available for 90 days following the call.

About Blueprint Medicines’ EGFR Development Program

Derived from Blueprint Medicines’ proprietary research platform, BLU-945 and BLU-701 are investigational next-generation EGFR non-covalent tyrosine kinase inhibitors. Both treatments are specifically designed to provide comprehensive coverage of the most common activating and on-target resistance mutations, spare wild-type EGFR and other kinases to limit off-target toxicities and enable a range of combination strategies, and treat or prevent central nervous system metastases. BLU-945 is currently being evaluated in the Phase 1/2 SYMPHONY trial in patients with previously treated EGFR-driven NSCLC (NCT04862780). In addition, Blueprint Medicines plans to initiate a Phase 1/2 trial of BLU-701 in the fourth quarter of 2021.