Twenty Deaths in Japan Linked to Tavneos Use
Written by Emily J. Thompson, Senior Investment Analyst
Updated: 1 hour ago
0mins
Should l Buy AMGN?
Source: seekingalpha
- Drug Safety Concerns: In Japan, 20 deaths have been reported linked to the use of Tavneos, developed by Amgen, prompting Kissei to advise healthcare professionals to exercise caution in prescribing the drug, emphasizing the need to refrain from using it for new patients to ensure safety.
- Liver Injury Risks: At least 22 individuals have developed potentially fatal liver injuries after taking Tavneos, leading Kissei to provide information to healthcare professionals urging careful assessment of treatment continuation for existing patients, ensuring they understand the risks of liver dysfunction and alternative treatment options.
- Market Impact: Tavneos, marketed in Japan since 2022 for specific rare diseases, is projected to generate ¥11.5 billion by the fiscal year ending March 2026; however, Kissei has yet to assess the financial impact of these safety concerns, which could pressure future sales.
- Increased Regulatory Scrutiny: The U.S. FDA previously considered withdrawing Tavneos from the market due to safety issues and potential data manipulation, highlighting ongoing controversies regarding the drug's safety, which may affect its market acceptance and sales outlook.
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Analyst Views on AMGN
Wall Street analysts forecast AMGN stock price to rise
24 Analyst Rating
14 Buy
9 Hold
1 Sell
Moderate Buy
Current: 336.230
Low
280.00
Averages
363.10
High
425.00
Current: 336.230
Low
280.00
Averages
363.10
High
425.00
About AMGN
Amgen Inc. is a biotechnology company. It discovers, develops, manufactures and delivers medicines for the toughest diseases. It focuses on areas of high unmet medical need and leverages its expertise to strive for solutions that improve people’s lives. It operates in the human therapeutics segment. Its marketed products portfolio includes EPOGEN (epoetin alfa); Aranesp (darbepoetin alfa); Parsabiv (etelcalcetide); Neulasta (pegfilgrastim); KANJINTI (trastuzumab-anns); Otezla; BLINCYTO (blinatumomab); ACTIMMUNE (interferon gamma-1b); Neulasta (pegfilgrastim); Sensipar/Mimpara (cinacalcet); Prolia (denosumab); ENBREL; QUINSAIR (levofloxacin); Repatha (evolocumab) and others. It markets ENBREL, a tumor necrosis factor blocker, in the United States and Canada. It markets Otezla, a small molecule that inhibits phosphodiesterase 4, in many countries around the world. It markets Repatha, a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor, in many countries around the world.
About the author

Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
- Drug Safety Concerns: In Japan, 20 deaths have been reported linked to the use of Tavneos, developed by Amgen, prompting Kissei to advise healthcare professionals to exercise caution in prescribing the drug, emphasizing the need to refrain from using it for new patients to ensure safety.
- Liver Injury Risks: At least 22 individuals have developed potentially fatal liver injuries after taking Tavneos, leading Kissei to provide information to healthcare professionals urging careful assessment of treatment continuation for existing patients, ensuring they understand the risks of liver dysfunction and alternative treatment options.
- Market Impact: Tavneos, marketed in Japan since 2022 for specific rare diseases, is projected to generate ¥11.5 billion by the fiscal year ending March 2026; however, Kissei has yet to assess the financial impact of these safety concerns, which could pressure future sales.
- Increased Regulatory Scrutiny: The U.S. FDA previously considered withdrawing Tavneos from the market due to safety issues and potential data manipulation, highlighting ongoing controversies regarding the drug's safety, which may affect its market acceptance and sales outlook.
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