Abstract
The primary hyperoxalurias (PH 1, 2, and 3) are rare autosomal recessive disorders of glyoxylate metabolism resulting in hepatic overproduction of oxalate. Clinical presentations that should prompt consideration of PH include kidney stones, nephrocalcinosis, and kidney failure of unknown etiology, especially with echogenic kidneys on ultrasound. PH1 is the most common and severe of the primary hyperoxalurias with a high incidence of kidney failure as early as infancy. Until the recent availability of a novel RNA interference (RNAi) agent, PH care was largely supportive of eventual need for kidney/liver transplantation in PH1 and PH2. Together with the Oxalosis and Hyperoxaluria Foundation, the authors developed a diagnostic algorithm for PH1 and in this report outline best clinical practices related to its early diagnosis, supportive treatment, and long-term management, including the use of the novel RNAi. PH1-focused approaches to dialysis and kidney/liver transplantation for PH patients with progression to chronic kidney disease/kidney failure and systemic oxalosis are suggested. Therapeutic advances for this devastating disease heighten the importance of early diagnosis and informed treatment.
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Acknowledgements
We are grateful to the Oxalosis and Hyperoxaluria Foundation for convening the panel of international experts in PH. Kim Hollander, Executive Director, and Julie Bertarelli, Operations Coordinator, provided invaluable guidance and administrative support. We thank Maya Vaishnaw for design assistance with the diagnostic algorithm and graphic abstract.
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MM: Alnylam Pharmaceuticals-served as site PI for use of lumasiran for PH1; PI longitudinal study (BONAPH1DE); Novo Nordisk Inc: served in the advisory board; EH: Research funding: Dicerna; Consulting fees, Advisory Board chair, speaker fees and travel funding from Alnylam; Consulting fees from Arbor Biotechnologies; DM: Research funding—Dicerna, Alnylam, OxThera; Advisory Boards—Synlogic, Mirum Pharmaceuticals, Consulting agreements—Oxthera, Dicerna, Alnylam; YF: Alnylam – consulting fees, research funding; Dicerna – travel grant to attend investigators’ meeting; DJS: Received grant funding for research from Alnylam and Dicerna Pharmaceuticals; JC: None; LC: Nuwellis-Consultant; KP: None; JS: Alynylam: research funding, consulting fees, NovoNordisk: scientific advisory; MJGS: Advisory Boards for Alnylam Pharmaceuticals, Cantero Therapeutics, Dicerna Pharmaceuticals, and BioPorto. Chairs a Data Safety Monitoring Board for a clinical trial for Dicerna. Member of the Scientific Advisory Board of the Oxalosis and Hyperoxaluria Foundation; MAB: Novo Nordisk (previously Dicerna): scientific advisory, PI clinical trial Nedosiran; Alnylam: scientific advisory, PI longitudinal study (BONAPH1DE); Chinook: scientific advisory; Cantero (previously Orfan): scientific advisory; UpToDate: author and section editor.
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Michael J. G. Somers and Michelle A. Baum contributed equally as final or last authors.
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Michael, M., Harvey, E., Milliner, D.S. et al. Diagnosis and management of primary hyperoxalurias: best practices. Pediatr Nephrol (2024). https://doi.org/10.1007/s00467-024-06328-2
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DOI: https://doi.org/10.1007/s00467-024-06328-2