Pricing & Access· August 17, 2026 · 25 min readTavneos on Formularies as FDA Moves to Withdraw: The Coverage DilemmaAs FDA moves to withdraw Tavneos and the EU revokes its approval, the drug remains legally marketed in the US. Here is the coverage...By Ran Chen#Coverage Access#Prior Authorization#Payer Policy
Specialty· August 15, 2026 · 25 min readKidney Transplant Immunosuppression: Part B-ID Cliff, Tacrolimus, & Access2026 kidney transplant access analysis: Medicare 36-month ESRD cliff, the Part B-ID benefit, narrow-therapeutic-index tacrolimus...By Ran Chen#Nephrology#Medicare Part B#Coverage Access
Evidence· July 10, 2026 · 17 min readCalcineurin Inhibitor Adverse Events in FAERS: 275,000 Reports and Key Safety SignalsA pharmacovigilance analysis of calcineurin inhibitors in FDA FAERS: report volumes, serious and fatal outcomes, nephrotoxicity and...By Ran Chen#Real-World Evidence#Postmarketing Requirements#Label Warnings
Specialty· July 9, 2026 · 17 min readIgA Nephropathy Access: Trutakna, Filspari, Tarpeyo, Fabhalta, and VoyxactA market access comparison of six approved IgA nephropathy therapies following the Jul 7, 2026 Trutakna approval, mapping trials,...By Ran Chen#Nephrology#Specialty Pharmacy#Prior Authorization
Evidence· July 1, 2026 · 17 min readACE Inhibitors and ARBs in FAERS: 46,000 Reports in 2025 and the Core SignalsA FAERS postmarketing safety analysis of ACE inhibitors and ARBs. Details 2021-2025 trends, ACE vs ARB suspect splits, and angioedema...By Ran Chen#Hypertension#Cardiovascular#Real-World Evidence