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BeyondSpring Announces Poster Presentation at 2025 ASCO Annual Meeting

Key Takeaway: BeyondSpring Inc. announced a poster presentation for the 303 Study at the 2025 ASCO Annual Meeting. This study evaluates the efficacy of Plinabulin combined with docetaxel and pembrolizumab for patients with metastatic NSCLC who have progressed after prior treatments. The presentation will occur from May 30 to June 3 in Chicago, IL.
Price reaction · baseline $1.7599 (2025-05-27 close) · hit pre-market · clean, no other BYSI news in the window
day 0 close
-5.7%
day 1
-1%
day 3 · peak
-7.4%

Market Sentiment Analysis

POSITIVE FACTORS

  • BeyondSpring will present promising study results at a major oncology conference.
  • The 303 Study focuses on a unique combination therapy for NSCLC.
  • Collaboration with Merck enhances the credibility of the study.

BiopharmaWatch Analysis

From our catalyst data and publicly available data · not financial advice
Best trade, last catalyst
+40%
120-day peak, hindsight
Typical move
14.8%
average across 6 past catalysts
Cash runway
~5 mo
High dilution risk
Lead asset
Plinabulin
Phase 3 · Chemotherapy-induced Neutropenia

Full Press Release Details

FLORHAM PARK, N.J., May 28, 2025 (GLOBE NEWSWIRE) --BeyondSpring Inc.(NASDAQ: BYSI) (“BeyondSpring” or the “Company”), a clinical-stage global biopharmaceutical company focused on developing cancer therapies, today announces that it will have a poster presentation on 303 Study, the investigator-initiated study supported by Merck (known as MSD outside of the United States and Canada) and BeyondSpring in 2L/3L NSCLC who progressed on PD-1/PD-L1 inhibitors at2025 American Society of Clinical Oncology (ASCO) Annual Meeting, taking place on May 30 through June 3 in Chicago, IL.

​​Presentation details are as follows:

About BeyondSpringBeyondSpring (NASDAQ: BYSI) is a clinical-stage biopharmaceutical company developing first-in-class therapies for high unmet medical needs. Its lead asset, Plinabulin, is in late-stage clinical development as an anti-cancer agent in NSCLC and a range of cancer indications. Plinabulin’s novel mechanism of action as a dendritic cell maturation agent supports both anti-cancer activity and immune modulation, offering a unique approach to resensitizing tumors to checkpoint inhibitors. Learn more atbeyondspringpharma.com.
About 303 Study303 Study is an open-label, single-arm Phase 2 Study of Plinabulin plus docetaxel and pembrolizumab for previously treated patients with metastatic NSCLC and progressive disease after anti-PD-(L)1 inhibitor alone or in combination with platinum-doublet chemotherapy. This study evaluates the efficacy and safety of this triple combination and is being conducted at Peking Union Medical College Hospital, Beijing, China with Dr. Mengzhao Wang, Chief of the Department of Respiratory and Critical Care Medicine, as the principal investigator and with Merck. The sample size of the study is 47 patients and all have been enrolled. The primary endpoint is investigator-based ORR (RECIST 1.1). The secondary endpoints include PFS, OS, DoR, and safety. The regimen includes Pembrolizumab 200 mg IV every 3 weeks (Q3W) on Day 1, Docetaxel 75 mg/m2 IV Q3W on Day 1 and Plinabulin 30mg/m2 IV Q3W on Day 1 in a 21-day cycle. The study is funded by Merck’s Investigator Studies Program and BeyondSpring with provision of study drug and financial support. The registration number is NCT05599789 on clinicaltrials.gov.

Investor Contact:IR@beyondspringpharma.com

Frequently Asked Questions

What is the 303 Study about?

The 303 Study evaluates the combination of Plinabulin, docetaxel, and pembrolizumab for NSCLC patients who progressed after PD-1/PD-L1 inhibitors.

When will the ASCO Annual Meeting take place?

The ASCO Annual Meeting is scheduled from May 30 to June 3, 2025.

Who is the principal investigator of the 303 Study?

Dr. Mengzhao Wang is the principal investigator at Peking Union Medical College Hospital.

What is the sample size of the 303 Study?

The study has enrolled 47 patients.

What is the primary endpoint of the 303 Study?

The primary endpoint is the investigator-based overall response rate (ORR).

Last updated: May 28, 2025