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Frishberg Y, Deschênes G, Groothoff JW, et al. Phase 1/2 Study of Lumasiran for Treatment of Primary Hyperoxaluria Type 1: A Placebo-Controlled Randomized Clinical Trial. Clin J Am Soc Nephrol. 2021;16(7):1025-1036doi: 10.2215/CJN.14730920.
Frishberg, Y., Deschênes, G., Groothoff, J. W., Hulton, S. A., Magen, D., Harambat, J., Van't Hoff, W. G., Lorch, U., Milliner, D. S., Lieske, J. C., Haslett, P., Garg, P. P., Vaishnaw, A. K., Talamudupula, S., Lu, J., Habtemariam, B. A., Erbe, D. V., McGregor, T. L., Cochat, P. (2021). Phase 1/2 Study of Lumasiran for Treatment of Primary Hyperoxaluria Type 1: A Placebo-Controlled Randomized Clinical Trial. Clinical journal of the American Society of Nephrology : CJASN, 16(7), 1025-1036. https://doi.org/10.2215/CJN.14730920
Frishberg, Yaacov, et al. "Phase 1/2 Study of Lumasiran for Treatment of Primary Hyperoxaluria Type 1: A Placebo-Controlled Randomized Clinical Trial." Clinical journal of the American Society of Nephrology : CJASN vol. 16,7 (2021): 1025-1036. doi: https://doi.org/10.2215/CJN.14730920
Frishberg Y, Deschênes G, Groothoff JW, Hulton SA, Magen D, Harambat J, Van't Hoff WG, Lorch U, Milliner DS, Lieske JC, Haslett P, Garg PP, Vaishnaw AK, Talamudupula S, Lu J, Habtemariam BA, Erbe DV, McGregor TL, Cochat P. Phase 1/2 Study of Lumasiran for Treatment of Primary Hyperoxaluria Type 1: A Placebo-Controlled Randomized Clinical Trial. Clin J Am Soc Nephrol. 2021 Jul;16(7):1025-1036. doi: 10.2215/CJN.14730920. Epub 2021 May 13. PMID: 33985991; PMCID: PMC8425611.
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Clin J Am Soc Nephrol. 2021 Jul;16(7):1025-1036. doi: 10.2215/CJN.14730920. Epub 2021 May 13.

Phase 1/2 Study of Lumasiran for Treatment of Primary Hyperoxaluria Type 1: A Placebo-Controlled Randomized Clinical Trial.

Clinical journal of the American Society of Nephrology : CJASN

Yaacov Frishberg, Georges Deschênes, Jaap W Groothoff, Sally-Anne Hulton, Daniella Magen, Jérôme Harambat, William G Van't Hoff, Ulrike Lorch, Dawn S Milliner, John C Lieske, Patrick Haslett, Pushkal P Garg, Akshay K Vaishnaw, Sandeep Talamudupula, Jiandong Lu, Bahru A Habtemariam, David V Erbe, Tracy L McGregor, Pierre Cochat,

Affiliations

  1. Division of Pediatric Nephrology, Shaare Zedek Medical Center, Jerusalem, Israel [email protected].
  2. Department of Pediatric Nephrology, Hôpital Robert Debré, Paris, France.
  3. Department of Pediatric Nephrology, University of Amsterdam, Amsterdam, The Netherlands.
  4. Department of Nephrology, Birmingham Women's and Children's Hospital, Birmingham, United Kingdom.
  5. Pediatric Nephrology Institute, Ruth Children's Hospital, Haifa, Israel.
  6. Pediatric Nephrology Unit, Bordeaux University Hospital, Bordeaux, France.
  7. Department of Paediatric Nephrology, Great Ormond Street Hospital, London, United Kingdom.
  8. Richmond Pharmacology Ltd., London, United Kingdom.
  9. Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota.
  10. Alnylam Pharmaceuticals, Cambridge, Massachusetts.
  11. Center for Rare Renal Diseases and Institut National de la Santé et de la Recherche Médicale Pediatric Clinical Investigation Center, Hospices Civils de Lyon, Lyon, France.
  12. Université de Lyon, Lyon, France.

PMID: 33985991 PMCID: PMC8425611 DOI: 10.2215/CJN.14730920

Abstract

BACKGROUND AND OBJECTIVES: In the rare disease primary hyperoxaluria type 1, overproduction of oxalate by the liver causes kidney stones, nephrocalcinosis, kidney failure, and systemic oxalosis. Lumasiran, an RNA interference therapeutic, suppresses glycolate oxidase, reducing hepatic oxalate production. The objective of this first-in-human, randomized, placebo-controlled trial was to evaluate the safety, pharmacokinetic, and pharmacodynamic profiles of lumasiran in healthy participants and patients with primary hyperoxaluria type 1.

DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This phase 1/2 study was conducted in two parts. In part A, healthy adults randomized 3:1 received a single subcutaneous dose of lumasiran or placebo in ascending dose groups (0.3-6 mg/kg). In part B, patients with primary hyperoxaluria type 1 randomized 3:1 received up to three doses of lumasiran or placebo in cohorts of 1 or 3 mg/kg monthly or 3 mg/kg quarterly. Patients initially assigned to placebo crossed over to lumasiran on day 85. The primary outcome was incidence of adverse events. Secondary outcomes included pharmacokinetic and pharmacodynamic parameters, including measures of oxalate in patients with primary hyperoxaluria type 1. Data were analyzed using descriptive statistics.

RESULTS: Thirty-two healthy participants and 20 adult and pediatric patients with primary hyperoxaluria type 1 were enrolled. Lumasiran had an acceptable safety profile, with no serious adverse events or study discontinuations attributed to treatment. In part A, increases in mean plasma glycolate concentration, a measure of target engagement, were observed in healthy participants. In part B, patients with primary hyperoxaluria type 1 had a mean maximal reduction from baseline of 75% across dosing cohorts in 24-hour urinary oxalate excretion. All patients achieved urinary oxalate levels ≤1.5 times the upper limit of normal.

CONCLUSIONS: Lumasiran had an acceptable safety profile and reduced urinary oxalate excretion in all patients with primary hyperoxaluria type 1 to near-normal levels.

CLINICAL TRIAL REGISTRY NAME AND REGISTRATION NUMBER: Study of Lumasiran in Healthy Adults and Patients with Primary Hyperoxaluria Type 1, NCT02706886.

Copyright © 2021 by the American Society of Nephrology.

Keywords: RNAi; RNAi therapeutics; kidney stones; lumasiran; nephrocalcinosis; oxalosis; plasma oxalate; primary hyperoxaluria type 1; urinary oxalate

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