Core Viewpoint - Sanofi is set to acquire Blueprint Medicines for approximately $9.1 billion, enhancing its portfolio in rare immunological diseases and expanding its early-stage pipeline in immunology [2][5][6] Group 1: Acquisition Details - The acquisition includes Ayvakit/Ayvakyt (avapritinib), the only approved medicine for advanced and indolent systemic mastocytosis (SM), and a promising pipeline of advanced and early-stage immunology treatments [3][4] - Sanofi will pay $129.00 per share in cash, representing a premium of approximately 27% over Blueprint's closing price on May 30, 2025, and a total equity value of about $9.5 billion when including potential milestone payments [5][12] - The acquisition is expected to be completed in the third quarter of 2025, subject to customary closing conditions and regulatory approvals [13][14] Group 2: Financial Impact - The acquisition is immediately accretive to gross margin and is expected to positively impact business operating income and EPS after 2026 [14] - Ayvakit achieved net revenues of $479 million in 2024 and nearly $150 million in Q1 2025, reflecting year-on-year growth of over 60% compared to Q1 2024 [9] Group 3: Strategic Rationale - The acquisition aligns with Sanofi's strategic intent to strengthen its therapeutic areas and enhance its immunology pipeline, positioning the company as a leader in the field [6][8] - Blueprint's established presence among allergists, dermatologists, and immunologists is anticipated to bolster Sanofi's growth in immunology [3][4]