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Other Disclosures4547KISSEI PHARMACEUTICAL CO.,LTD.Pharmaceuticals

Appropriate Use of Tavneos

Kissei Pharmaceutical has begun providing information to healthcare professionals on the cautious administration of Tavneos following reports in the US and Europe of severe liver injury and issues involving efficacy and marketing authorization application data. The company is advising that use in new patients be suspended for the time being and that the appropriateness of continuing treatment be carefully assessed for patients currently receiving the drug.

Worth reading
64In focus
0–100. This measures how worthwhile something is to read, not how good or bad the company is.
Direction
Deterioration
Direction inferred from the company’s description.
Scale
115.24
¥100 million (net sales for the fiscal year ended March 2026)
Wording
Avoiding a definitive answer
How definitive the wording is.

Announced details

Tavneos (generic name: avacopan)
Applicable field (uses covered by this announcement)

Treatment of microscopic polyangiitis and granulomatosis with polyangiitis, and treatment of rare diseases in nephrology and other fields

Launch dateJune 2022 (sales launched in Japan; sales performance)
Contract DateJune 2017 (news release dated 9 June 2017)
Relationship between the counterparty and the company
KISSEI PHARMACEUTICAL CO.,LTD.4547
Relationship with the Company

In June 2017, the Company acquired the exclusive rights to develop and commercialize the product in Japan from Vifor Fresenius Medical Care Renal Pharma Ltd. and has sold it in Japan since June 2022. ChemoCentryx licensed worldwide rights outside the US to Vifor, which sublicensed the Japanese rights to the Company.

CounterpartyVifor Fresenius Medical Care Renal Pharma Ltd. (now CSL Vifor)U.S. Food and Drug Administration (FDA)European Medicines Agency (EMA)Pharmaceuticals and Medical Devices Agency (PMDA)Ministry of Health, Labour and Welfare

Vifor Fresenius Medical Care Renal Pharma Ltd. licensed the exclusive rights to develop and commercialize this product in Japan to the Company. It is now CSL Vifor. ChemoCentryx originated the product and has since been acquired by Amgen. The FDA is the US regulatory authority, the EMA is Europe's medicines regulator, the PMDA is Japan's Pharmaceuticals and Medical Devices Agency, and the Ministry of Health, Labour and Welfare is a Japanese government ministry.

Impact on Business Performance

The impact of this matter on the Company's performance is currently under review. Sales of the product for the fiscal year ending March 2026 were ¥11.524 billion.

The company does not address Contract Value / Offering price.

Source (materials cited by the company)

US Food and Drug Administration (FDA), FDA Center for Drug Evaluation and Research (CDER), European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA)

Announced details
ItemDetails
Names of Products / Services CoveredTavneos (generic name: avacopan)
CounterpartyVifor Fresenius Medical Care Renal Pharma Ltd. (now CSL Vifor), U.S. Food and Drug Administration (FDA), European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA), Ministry of Health, Labour and Welfare
Counterparty overviewVifor Fresenius Medical Care Renal Pharma Ltd. licensed the exclusive rights to develop and commercialize this product in Japan to the Company. It is now CSL Vifor. ChemoCentryx originated the product and has since been acquired by Amgen. The FDA is the US regulatory authority, the EMA is Europe's medicines regulator, the PMDA is Japan's Pharmaceuticals and Medical Devices Agency, and the Ministry of Health, Labour and Welfare is a Japanese government ministry.
Relationship with the CompanyIn June 2017, the Company acquired the exclusive rights to develop and commercialize the product in Japan from Vifor Fresenius Medical Care Renal Pharma Ltd. and has sold it in Japan since June 2022. ChemoCentryx licensed worldwide rights outside the US to Vifor, which sublicensed the Japanese rights to the Company.
Contract DateJune 2017 (news release dated 9 June 2017)
Launch dateJune 2022 (sales launched in Japan; sales performance)
Applicable areaTreatment of microscopic polyangiitis and granulomatosis with polyangiitis, and treatment of rare diseases in nephrology and other fields
Impact on Business PerformanceThe impact of this matter on the Company's performance is currently under review. Sales of the product for the fiscal year ending March 2026 were ¥11.524 billion.
SourceUS Food and Drug Administration (FDA), FDA Center for Drug Evaluation and Research (CDER), European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA)
Items this document does not state (9)
Contract ValueOffering priceAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocationLocation scaleQuantitative EffectsUsage history

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

The company began providing information with patient safety as its top priority following the FDA's identification of severe drug-induced liver injury, the proposed withdrawal of US approval, issues concerning material facts in the efficacy data and marketing authorization application documents, and the EMA's review of the integrity of clinical trial data.

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Appropriate Use of Tavneos | KISSEI PHARMACEUTICAL CO.,LTD. (4547) timely disclosure | Komori