Anaptys Announces First Quarter 2025 Financial Results and Provides Business Update

In This Article:

AnaptysBio, Inc.
AnaptysBio, Inc.
  • Announced rosnilimab, a depleter and agonist targeting PD-1+ T cells, achieved positive results in Phase 2b rheumatoid arthritis (RA) trial; to present updated clinical and translational data in the first week of June

  • Initial Phase 2 data for rosnilimab in ulcerative colitis (UC) on track for Q4 2025

  • Ongoing Phase 1a trials in healthy volunteers for ANB033, a CD122 antagonist, and ANB101, a BDCA2 modulator

  • Authorized a $75 million Stock Repurchase Program in March 2025 and reiterating cash runway through year-end 2027

SAN DIEGO, May 05, 2025 (GLOBE NEWSWIRE) -- AnaptysBio, Inc. (Nasdaq: ANAB), a clinical-stage biotechnology company focused on delivering innovative immunology therapeutics, today reported financial results for the first quarter ended March 31, 2025, and provided a business update.

“Our lead program, rosnilimab, delivered impressive three-month Phase 2b efficacy, safety and tolerability data in rheumatoid arthritis (RA), with data through six months surpassing those of competitor all-active, head-to-head trials. We will report updated clinical and translational RA data in the first week of June, as well as initial Phase 2 ulcerative colitis (UC) data in Q4 2025, further defining rosnilimab’s game-changing potential,” said Daniel Faga, president and chief executive officer of Anaptys. “With ANB033 and ANB101 progressing through Phase 1 trials, our autoimmune portfolio promises multiple catalysts over the next couple of years. We remain well-capitalized as we execute on our broad development plan for all three programs, while concurrently executing our $75 million stock repurchase program which are both further supported by substantial royalties and milestone payments anticipated from our GSK financial collaboration.”

PORTFOLIO UPDATES

Rosnilimab (PD-1 depleter and agonist)

  • Announced in February that subcutaneously administered rosnilimab, including two once-monthly doses, achieved positive results in 424-patient Phase 2b RA trial and highest-ever reported clinical disease activity index (CDAI) low disease activity (LDA) response over 6 months

    • Full press release can be found here

    • Anaptys to host an investor call featuring Anaptys management and key opinion leaders in the first week of June to present rosnilimab’s updated Phase 2b clinical and translational data

  • Enrollment ongoing for global Phase 2 trial in moderate-to-severe UC

    • 132-patient trial assessing two dose levels of subcutaneously administered rosnilimab vs. placebo (randomized 1:1:1)

      • Primary statistical analysis at Week 12 on well-established endpoints, including the primary endpoint of change from baseline in modified Mayo score (mMS) and supportive secondary endpoints of clinical response on mMS, clinical remission on mMS and endoscopic remission

      • All patients in all three study arms treat-through to Week 24 and remain blinded to treatment arm. Placebo-treated patients who achieved clinical response on partial modified Mayo score (pmMS) at Week 12 remain on placebo, while placebo-treated patients who are non-responders are crossed over to the high-dose rosnilimab treatment arm

      • Patients who are in clinical response on pmMS at Week 24 are eligible for an additional 26-week (50 weeks of total treatment) blinded treatment extension period (TEP)

    • Initial Phase 2 data anticipated in Q4 2025